Instruction:
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## 内容1
### 文件路径：
spring-expression/src/main/java/org/springframework/expression/spel/SpelMessage.java
### 代码内容：
package org.springframework.expression.spel;

import java.text.MessageFormat;

/**
 * Contains all the messages that can be produced by the Spring Expression Language.
 * Each message has a kind (info, warn, error) and a code number. Tests can be written to
 * expect particular code numbers rather than particular text, enabling the message text
 * to more easily be modified and the tests to run successfully in different locales.
 *
 *
When a message is formatted, it will have this kind of form, capturing the prefix
 * and the error kind:
 *
 *
EL1005E: Type cannot be found 'String'

 *
 * @author Andy Clement
 * @author Juergen Hoeller
 * @author Sam Brannen
 * @since 3.0
 */
public enum SpelMessage {

	TYPE_CONVERSION_ERROR(Kind.ERROR, 1001,
			"Type conversion problem, cannot convert from {0} to {1}"),

	CONSTRUCTOR_NOT_FOUND(Kind.ERROR, 1002,
			"Constructor call: No suitable constructor found on type {0} for arguments {1}"),

	CONSTRUCTOR_INVOCATION_PROBLEM(Kind.ERROR, 1003,
			"A problem occurred whilst attempting to construct an object of type ''{0}'' using arguments ''{1}''"),

	METHOD_NOT_FOUND(Kind.ERROR, 1004,
			"Method call: Method {0} cannot be found on type {1}"),

	TYPE_NOT_FOUND(Kind.ERROR, 1005,
			"Type cannot be found ''{0}''"),

	FUNCTION_NOT_DEFINED(Kind.ERROR, 1006,
			"Function ''{0}'' could not be found"),

	PROPERTY_OR_FIELD_NOT_READABLE_ON_NULL(Kind.ERROR, 1007,
			"Property or field ''{0}'' cannot be found on null"),

	PROPERTY_OR_FIELD_NOT_READABLE(Kind.ERROR, 1008,
			"Property or field ''{0}'' cannot be found on object of type ''{1}'' - maybe not public or not valid?"),

	PROPERTY_OR_FIELD_NOT_WRITABLE_ON_NULL(Kind.ERROR, 1009,
			"Property or field ''{0}'' cannot be set on null"),

	PROPERTY_OR_FIELD_NOT_WRITABLE(Kind.ERROR, 1010,
			"Property or field ''{0}'' cannot be set on object of type ''{1}'' - maybe not public or not writable?"),

	METHOD_CALL_ON_NULL_OBJECT_NOT_ALLOWED(Kind.ERROR, 1011,
			"Method call: Attempted to call method {0} on null context object"),

	CANNOT_INDEX_INTO_NULL_VALUE(Kind.ERROR, 1012,
			"Cannot index into a null value"),

	NOT_COMPARABLE(Kind.ERROR, 1013,
			"Cannot compare instances of {0} and {1}"),

	INCORRECT_NUMBER_OF_ARGUMENTS_TO_FUNCTION(Kind.ERROR, 1014,
			"Incorrect number of arguments for function, {0} supplied but function takes {1}"),

	INVALID_TYPE_FOR_SELECTION(Kind.ERROR, 1015,
			"Cannot perform selection on input data of type ''{0}''"),

	RESULT_OF_SELECTION_CRITERIA_IS_NOT_BOOLEAN(Kind.ERROR, 1016,
			"Result of selection criteria is not boolean"),

	BETWEEN_RIGHT_OPERAND_MUST_BE_TWO_ELEMENT_LIST(Kind.ERROR, 1017,
			"Right operand for the 'between' operator has to be a two-element list"),

	INVALID_PATTERN(Kind.ERROR, 1018,
			"Pattern is not valid ''{0}''"),

	PROJECTION_NOT_SUPPORTED_ON_TYPE(Kind.ERROR, 1019,
			"Projection is not supported on the type ''{0}''"),

	ARGLIST_SHOULD_NOT_BE_EVALUATED(Kind.ERROR, 1020,
			"The argument list of a lambda expression should never have getValue() called upon it"),

	EXCEPTION_DURING_PROPERTY_READ(Kind.ERROR, 1021,
			"A problem occurred whilst attempting to access the property ''{0}'': ''{1}''"),

	FUNCTION_REFERENCE_CANNOT_BE_INVOKED(Kind.ERROR, 1022,
			"The function ''{0}'' mapped to an object of type ''{1}'' which cannot be invoked"),

	EXCEPTION_DURING_FUNCTION_CALL(Kind.ERROR, 1023,
			"A problem occurred whilst attempting to invoke the function ''{0}'': ''{1}''"),

	ARRAY_INDEX_OUT_OF_BOUNDS(Kind.ERROR, 1024,
			"The array has ''{0}'' elements, index ''{1}'' is invalid"),

	COLLECTION_INDEX_OUT_OF_BOUNDS(Kind.ERROR, 1025,
			"The collection has ''{0}'' elements, index ''{1}'' is invalid"),

	STRING_INDEX_OUT_OF_BOUNDS(Kind.ERROR, 1026,
			"The string has ''{0}'' characters, index ''{1}'' is invalid"),

	INDEXING_NOT_SUPPORTED_FOR_TYPE(Kind.ERROR, 1027,
			"Indexing into type ''{0}'' is not supported"),

	INSTANCEOF_OPERATOR_NEEDS_CLASS_OPERAND(Kind.ERROR, 1028,
			"The operator 'instanceof' needs the right operand to be a class, not a ''{0}''"),

	EXCEPTION_DURING_METHOD_INVOCATION(Kind.ERROR, 1029,
			"A problem occurred when trying to execute method ''{0}'' on object of type ''{1}'': ''{2}''"),

	OPERATOR_NOT_SUPPORTED_BETWEEN_TYPES(Kind.ERROR, 1030,
			"The operator ''{0}'' is not supported between objects of type ''{1}'' and ''{2}''"),

	PROBLEM_LOCATING_METHOD(Kind.ERROR, 1031,
			"Problem locating method {0} on type {1}"),

	SETVALUE_NOT_SUPPORTED(	Kind.ERROR, 1032,
			"setValue(ExpressionState, Object) not supported for ''{0}''"),

	MULTIPLE_POSSIBLE_METHODS(Kind.ERROR, 1033,
			"Method call of ''{0}'' is ambiguous, supported type conversions allow multiple variants to match"),

	EXCEPTION_DURING_PROPERTY_WRITE(Kind.ERROR, 1034,
			"A problem occurred whilst attempting to set the property ''{0}'': {1}"),

	NOT_AN_INTEGER(Kind.ERROR, 1035,
			"The value ''{0}'' cannot be parsed as an int"),

	NOT_A_LONG(Kind.ERROR, 1036,
			"The value ''{0}'' cannot be parsed as a long"),

	INVALID_FIRST_OPERAND_FOR_MATCHES_OPERATOR(Kind.ERROR, 1037,
			"First operand to matches operator must be a string. ''{0}'' is not"),

	INVALID_SECOND_OPERAND_FOR_MATCHES_OPERATOR(Kind.ERROR, 1038,
			"Second operand to matches operator must be a string. ''{0}'' is not"),

	FUNCTION_MUST_BE_STATIC(Kind.ERROR, 1039,
			"Only static methods can be called via function references. " +
			"The method ''{0}'' referred to by name ''{1}'' is not static."),

	NOT_A_REAL(Kind.ERROR, 1040,
			"The value ''{0}'' cannot be parsed as a double"),

	MORE_INPUT(Kind.ERROR, 1041,
			"After parsing a valid expression, there is still more data in the expression: ''{0}''"),

	RIGHT_OPERAND_PROBLEM(Kind.ERROR, 1042,
			"Problem parsing right operand"),

	NOT_EXPECTED_TOKEN(Kind.ERROR, 1043,
			"Unexpected token. Expected ''{0}'' but was ''{1}''"),

	OOD(Kind.ERROR, 1044,
			"Unexpectedly ran out of input"),

	NON_TERMINATING_DOUBLE_QUOTED_STRING(Kind.ERROR, 1045,
			"Cannot find terminating \" for string"),

	NON_TERMINATING_QUOTED_STRING(Kind.ERROR, 1046,
			"Cannot find terminating '' for string"),

	MISSING_LEADING_ZERO_FOR_NUMBER(Kind.ERROR, 1047,
			"A real number must be prefixed by zero, it cannot start with just ''.''"),

	REAL_CANNOT_BE_LONG(Kind.ERROR, 1048,
			"Real number cannot be suffixed with a long (L or l) suffix"),

	UNEXPECTED_DATA_AFTER_DOT(Kind.ERROR, 1049,
			"Unexpected data after ''.'': ''{0}''"),

	MISSING_CONSTRUCTOR_ARGS(Kind.ERROR, 1050,
			"The arguments '(...)' for the constructor call are missing"),

	RUN_OUT_OF_ARGUMENTS(Kind.ERROR, 1051,
			"Unexpectedly ran out of arguments"),

	UNABLE_TO_GROW_COLLECTION(Kind.ERROR, 1052,
			"Unable to grow collection"),

	UNABLE_TO_GROW_COLLECTION_UNKNOWN_ELEMENT_TYPE(Kind.ERROR, 1053,
			"Unable to grow collection: unable to determine list element type"),

	UNABLE_TO_CREATE_LIST_FOR_INDEXING(Kind.ERROR, 1054,
			"Unable to dynamically create a List to replace a null value"),

	UNABLE_TO_CREATE_MAP_FOR_INDEXING(Kind.ERROR, 1055,
			"Unable to dynamically create a Map to replace a null value"),

	UNABLE_TO_DYNAMICALLY_CREATE_OBJECT(Kind.ERROR, 1056,
			"Unable to dynamically create instance of ''{0}'' to replace a null value"),

	NO_BEAN_RESOLVER_REGISTERED(Kind.ERROR, 1057,
			"No bean resolver registered in the context to resolve access to bean ''{0}''"),

	EXCEPTION_DURING_BEAN_RESOLUTION(Kind.ERROR, 1058,
			"A problem occurred when trying to resolve bean ''{0}'':''{1}''"),

	INVALID_BEAN_REFERENCE(Kind.ERROR, 1059,
			"@ or & can only be followed by an identifier or a quoted name"),

	TYPE_NAME_EXPECTED_FOR_ARRAY_CONSTRUCTION(Kind.ERROR, 1060,
			"Expected the type of the new array to be specified as a String but found ''{0}''"),

	INCORRECT_ELEMENT_TYPE_FOR_ARRAY(Kind.ERROR, 1061,
			"The array of type ''{0}'' cannot have an element of type ''{1}'' inserted"),

	MULTIDIM_ARRAY_INITIALIZER_NOT_SUPPORTED(Kind.ERROR, 1062,
			"Using an initializer to build a multi-dimensional array is not currently supported"),

	MISSING_ARRAY_DIMENSION(Kind.ERROR, 1063,
			"A required array dimension has not been specified"),

	INITIALIZER_LENGTH_INCORRECT(Kind.ERROR, 1064,
			"Array initializer size does not match array dimensions"),

	UNEXPECTED_ESCAPE_CHAR(Kind.ERROR, 1065,
			"Unexpected escape character"),

	OPERAND_NOT_INCREMENTABLE(Kind.ERROR, 1066,
			"The expression component ''{0}'' does not support increment"),

	OPERAND_NOT_DECREMENTABLE(Kind.ERROR, 1067,
			"The expression component ''{0}'' does not support decrement"),

	NOT_ASSIGNABLE(Kind.ERROR, 1068,
			"The expression component ''{0}'' is not assignable"),

	MISSING_CHARACTER(Kind.ERROR, 1069,
			"Missing expected character ''{0}''"),

	LEFT_OPERAND_PROBLEM(Kind.ERROR, 1070,
			"Problem parsing left operand"),

	MISSING_SELECTION_EXPRESSION(Kind.ERROR, 1071,
			"A required selection expression has not been specified"),

	/** @since 4.1 */
	EXCEPTION_RUNNING_COMPILED_EXPRESSION(Kind.ERROR, 1072,
			"An exception occurred whilst evaluating a compiled expression"),

	/** @since 4.3.17 */
	FLAWED_PATTERN(Kind.ERROR, 1073,
			"Failed to efficiently evaluate pattern ''{0}'': consider redesigning it"),

	/** @since 5.3.17 */
	EXCEPTION_COMPILING_EXPRESSION(Kind.ERROR, 1074,
			"An exception occurred while compiling an expression");

	private final Kind kind;

	private final int code;

	private final String message;

	SpelMessage(Kind kind, int code, String message) {
		this.kind = kind;
		this.code = code;
		this.message = message;
	}

	/**
	 * Produce a complete message including the prefix and with the inserts
	 * applied to the message.
	 * @param inserts the inserts to put into the formatted message
	 * @return a formatted message
	 * @since 4.3.5
	 */
	public String formatMessage(Object... inserts) {
		StringBuilder formattedMessage = new StringBuilder();
		formattedMessage.append("EL").append(this.code);
		switch (this.kind) {
			case ERROR:
				formattedMessage.append('E');
				break;
		}
		formattedMessage.append(": ");
		formattedMessage.append(MessageFormat.format(this.message, inserts));
		return formattedMessage.toString();
	}

	/**
	 * Message kinds.
	 */
	public enum Kind { INFO, WARNING, ERROR }

}

## 内容2
### 文件路径：
spring-expression/src/main/java/org/springframework/expression/spel/ast/ConstructorReference.java
### 代码内容：
package org.springframework.expression.spel.ast;

import java.lang.reflect.Array;
import java.lang.reflect.Constructor;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Modifier;
import java.util.ArrayList;
import java.util.List;

import org.springframework.asm.MethodVisitor;
import org.springframework.core.convert.TypeDescriptor;
import org.springframework.expression.AccessException;
import org.springframework.expression.ConstructorExecutor;
import org.springframework.expression.ConstructorResolver;
import org.springframework.expression.EvaluationContext;
import org.springframework.expression.EvaluationException;
import org.springframework.expression.TypeConverter;
import org.springframework.expression.TypedValue;
import org.springframework.expression.common.ExpressionUtils;
import org.springframework.expression.spel.CodeFlow;
import org.springframework.expression.spel.ExpressionState;
import org.springframework.expression.spel.SpelEvaluationException;
import org.springframework.expression.spel.SpelMessage;
import org.springframework.expression.spel.SpelNode;
import org.springframework.expression.spel.support.ReflectiveConstructorExecutor;
import org.springframework.lang.Nullable;
import org.springframework.util.Assert;

/**
 * Represents the invocation of a constructor. Either a constructor on a regular type or
 * construction of an array. When an array is constructed, an initializer can be specified.
 *
 *
Examples:

 * new String('hello world')

 * new int[]{1,2,3,4}

 * new int[3] new int[3]{1,2,3}
 *
 * @author Andy Clement
 * @author Juergen Hoeller
 * @since 3.0
 */
public class ConstructorReference extends SpelNodeImpl {

	private final boolean isArrayConstructor;

	@Nullable
	private SpelNodeImpl[] dimensions;

	// TODO is this caching safe - passing the expression around will mean this executor is also being passed around
	/** The cached executor that may be reused on subsequent evaluations. */
	@Nullable
	private volatile ConstructorExecutor cachedExecutor;

	/**
	 * Create a constructor reference. The first argument is the type, the rest are the parameters to the constructor
	 * call
	 */
	public ConstructorReference(int startPos, int endPos, SpelNodeImpl... arguments) {
		super(startPos, endPos, arguments);
		this.isArrayConstructor = false;
	}

	/**
	 * Create a constructor reference. The first argument is the type, the rest are the parameters to the constructor
	 * call
	 */
	public ConstructorReference(int startPos, int endPos, SpelNodeImpl[] dimensions, SpelNodeImpl... arguments) {
		super(startPos, endPos, arguments);
		this.isArrayConstructor = true;
		this.dimensions = dimensions;
	}

	/**
	 * Implements getValue() - delegating to the code for building an array or a simple type.
	 */
	@Override
	public TypedValue getValueInternal(ExpressionState state) throws EvaluationException {
		if (this.isArrayConstructor) {
			return createArray(state);
		}
		else {
			return createNewInstance(state);
		}
	}

	/**
	 * Create a new ordinary object and return it.
	 * @param state the expression state within which this expression is being evaluated
	 * @return the new object
	 * @throws EvaluationException if there is a problem creating the object
	 */
	private TypedValue createNewInstance(ExpressionState state) throws EvaluationException {
		Object[] arguments = new Object[getChildCount() - 1];
		List<TypeDescriptor> argumentTypes = new ArrayList<>(getChildCount() - 1);
		for (int i = 0; i < arguments.length; i++) {
			TypedValue childValue = this.children[i + 1].getValueInternal(state);
			Object value = childValue.getValue();
			arguments[i] = value;
			argumentTypes.add(TypeDescriptor.forObject(value));
		}

		ConstructorExecutor executorToUse = this.cachedExecutor;
		if (executorToUse != null) {
			try {
				return executorToUse.execute(state.getEvaluationContext(), arguments);
			}
			catch (AccessException ex) {
				// Two reasons this can occur:
				// 1. the method invoked actually threw a real exception
				// 2. the method invoked was not passed the arguments it expected and has become 'stale'

				// In the first case we should not retry, in the second case we should see if there is a
				// better suited method.

				// To determine which situation it is, the AccessException will contain a cause.
				// If the cause is an InvocationTargetException, a user exception was thrown inside the constructor.
				// Otherwise the constructor could not be invoked.
				if (ex.getCause() instanceof InvocationTargetException) {
					// User exception was the root cause - exit now
					Throwable rootCause = ex.getCause().getCause();
					if (rootCause instanceof RuntimeException) {
						throw (RuntimeException) rootCause;
					}
					else {
						String typeName = (String) this.children[0].getValueInternal(state).getValue();
						throw new SpelEvaluationException(getStartPosition(), rootCause,
								SpelMessage.CONSTRUCTOR_INVOCATION_PROBLEM, typeName,
								FormatHelper.formatMethodForMessage("", argumentTypes));
					}
				}

				// At this point we know it wasn't a user problem so worth a retry if a better candidate can be found
				this.cachedExecutor = null;
			}
		}

		// Either there was no accessor or it no longer exists
		String typeName = (String) this.children[0].getValueInternal(state).getValue();
		Assert.state(typeName != null, "No type name");
		executorToUse = findExecutorForConstructor(typeName, argumentTypes, state);
		try {
			this.cachedExecutor = executorToUse;
			if (executorToUse instanceof ReflectiveConstructorExecutor) {
				this.exitTypeDescriptor = CodeFlow.toDescriptor(
						((ReflectiveConstructorExecutor) executorToUse).getConstructor().getDeclaringClass());

			}
			return executorToUse.execute(state.getEvaluationContext(), arguments);
		}
		catch (AccessException ex) {
			throw new SpelEvaluationException(getStartPosition(), ex,
					SpelMessage.CONSTRUCTOR_INVOCATION_PROBLEM, typeName,
					FormatHelper.formatMethodForMessage("", argumentTypes));
		}
	}

	/**
	 * Go through the list of registered constructor resolvers and see if any can find a
	 * constructor that takes the specified set of arguments.
	 * @param typeName the type trying to be constructed
	 * @param argumentTypes the types of the arguments supplied that the constructor must take
	 * @param state the current state of the expression
	 * @return a reusable ConstructorExecutor that can be invoked to run the constructor or null
	 * @throws SpelEvaluationException if there is a problem locating the constructor
	 */
	private ConstructorExecutor findExecutorForConstructor(String typeName,
			List<TypeDescriptor> argumentTypes, ExpressionState state) throws SpelEvaluationException {

		EvaluationContext evalContext = state.getEvaluationContext();
		List<ConstructorResolver> ctorResolvers = evalContext.getConstructorResolvers();
		for (ConstructorResolver ctorResolver : ctorResolvers) {
			try {
				ConstructorExecutor ce = ctorResolver.resolve(state.getEvaluationContext(), typeName, argumentTypes);
				if (ce != null) {
					return ce;
				}
			}
			catch (AccessException ex) {
				throw new SpelEvaluationException(getStartPosition(), ex,
						SpelMessage.CONSTRUCTOR_INVOCATION_PROBLEM, typeName,
						FormatHelper.formatMethodForMessage("", argumentTypes));
			}
		}
		throw new SpelEvaluationException(getStartPosition(), SpelMessage.CONSTRUCTOR_NOT_FOUND, typeName,
				FormatHelper.formatMethodForMessage("", argumentTypes));
	}

	@Override
	public String toStringAST() {
		StringBuilder sb = new StringBuilder("new ");
		int index = 0;
		sb.append(getChild(index++).toStringAST());
		sb.append('(');
		for (int i = index; i < getChildCount(); i++) {
			if (i > index) {
				sb.append(',');
			}
			sb.append(getChild(i).toStringAST());
		}
		sb.append(')');
		return sb.toString();
	}

	/**
	 * Create an array and return it.
	 * @param state the expression state within which this expression is being evaluated
	 * @return the new array
	 * @throws EvaluationException if there is a problem creating the array
	 */
	private TypedValue createArray(ExpressionState state) throws EvaluationException {
		// First child gives us the array type which will either be a primitive or reference type
		Object intendedArrayType = getChild(0).getValue(state);
		if (!(intendedArrayType instanceof String)) {
			throw new SpelEvaluationException(getChild(0).getStartPosition(),
					SpelMessage.TYPE_NAME_EXPECTED_FOR_ARRAY_CONSTRUCTION,
					FormatHelper.formatClassNameForMessage(
							intendedArrayType != null ? intendedArrayType.getClass() : null));
		}

		String type = (String) intendedArrayType;
		Class<?> componentType;
		TypeCode arrayTypeCode = TypeCode.forName(type);
		if (arrayTypeCode == TypeCode.OBJECT) {
			componentType = state.findType(type);
		}
		else {
			componentType = arrayTypeCode.getType();
		}

		Object newArray = null;
		if (!hasInitializer()) {
			// Confirm all dimensions were specified (for example [3][][5] is missing the 2nd dimension)
			if (this.dimensions != null) {
				for (SpelNodeImpl dimension : this.dimensions) {
					if (dimension == null) {
						throw new SpelEvaluationException(getStartPosition(), SpelMessage.MISSING_ARRAY_DIMENSION);
					}
				}
				TypeConverter typeConverter = state.getEvaluationContext().getTypeConverter();
				if (this.dimensions.length == 1) {
					// Shortcut for 1-dimensional
					TypedValue o = this.dimensions[0].getTypedValue(state);
					int arraySize = ExpressionUtils.toInt(typeConverter, o);
					newArray = Array.newInstance(componentType, arraySize);
				}
				else {
					// Multi-dimensional - hold onto your hat!
					int[] dims = new int[this.dimensions.length];
					for (int d = 0; d < this.dimensions.length; d++) {
						TypedValue o = this.dimensions[d].getTypedValue(state);
						dims[d] = ExpressionUtils.toInt(typeConverter, o);
					}
					newArray = Array.newInstance(componentType, dims);
				}
			}
		}
		else {
			// There is an initializer
			if (this.dimensions == null || this.dimensions.length > 1) {
				// There is an initializer but this is a multi-dimensional array (e.g. new int[][]{{1,2},{3,4}}) - this
				// is not currently supported
				throw new SpelEvaluationException(getStartPosition(),
						SpelMessage.MULTIDIM_ARRAY_INITIALIZER_NOT_SUPPORTED);
			}
			TypeConverter typeConverter = state.getEvaluationContext().getTypeConverter();
			InlineList initializer = (InlineList) getChild(1);
			// If a dimension was specified, check it matches the initializer length
			if (this.dimensions[0] != null) {
				TypedValue dValue = this.dimensions[0].getTypedValue(state);
				int i = ExpressionUtils.toInt(typeConverter, dValue);
				if (i != initializer.getChildCount()) {
					throw new SpelEvaluationException(getStartPosition(), SpelMessage.INITIALIZER_LENGTH_INCORRECT);
				}
			}
			// Build the array and populate it
			int arraySize = initializer.getChildCount();
			newArray = Array.newInstance(componentType, arraySize);
			if (arrayTypeCode == TypeCode.OBJECT) {
				populateReferenceTypeArray(state, newArray, typeConverter, initializer, componentType);
			}
			else if (arrayTypeCode == TypeCode.BOOLEAN) {
				populateBooleanArray(state, newArray, typeConverter, initializer);
			}
			else if (arrayTypeCode == TypeCode.BYTE) {
				populateByteArray(state, newArray, typeConverter, initializer);
			}
			else if (arrayTypeCode == TypeCode.CHAR) {
				populateCharArray(state, newArray, typeConverter, initializer);
			}
			else if (arrayTypeCode == TypeCode.DOUBLE) {
				populateDoubleArray(state, newArray, typeConverter, initializer);
			}
			else if (arrayTypeCode == TypeCode.FLOAT) {
				populateFloatArray(state, newArray, typeConverter, initializer);
			}
			else if (arrayTypeCode == TypeCode.INT) {
				populateIntArray(state, newArray, typeConverter, initializer);
			}
			else if (arrayTypeCode == TypeCode.LONG) {
				populateLongArray(state, newArray, typeConverter, initializer);
			}
			else if (arrayTypeCode == TypeCode.SHORT) {
				populateShortArray(state, newArray, typeConverter, initializer);
			}
			else {
				throw new IllegalStateException(arrayTypeCode.name());
			}
		}
		return new TypedValue(newArray);
	}

	private void populateReferenceTypeArray(ExpressionState state, Object newArray, TypeConverter typeConverter,
			InlineList initializer, Class<?> componentType) {

		TypeDescriptor toTypeDescriptor = TypeDescriptor.valueOf(componentType);
		Object[] newObjectArray = (Object[]) newArray;
		for (int i = 0; i < newObjectArray.length; i++) {
			SpelNode elementNode = initializer.getChild(i);
			Object arrayEntry = elementNode.getValue(state);
			newObjectArray[i] = typeConverter.convertValue(arrayEntry,
					TypeDescriptor.forObject(arrayEntry), toTypeDescriptor);
		}
	}

	private void populateByteArray(ExpressionState state, Object newArray, TypeConverter typeConverter,
			InlineList initializer) {

		byte[] newByteArray = (byte[]) newArray;
		for (int i = 0; i < newByteArray.length; i++) {
			TypedValue typedValue = initializer.getChild(i).getTypedValue(state);
			newByteArray[i] = ExpressionUtils.toByte(typeConverter, typedValue);
		}
	}

	private void populateFloatArray(ExpressionState state, Object newArray, TypeConverter typeConverter,
			InlineList initializer) {

		float[] newFloatArray = (float[]) newArray;
		for (int i = 0; i < newFloatArray.length; i++) {
			TypedValue typedValue = initializer.getChild(i).getTypedValue(state);
			newFloatArray[i] = ExpressionUtils.toFloat(typeConverter, typedValue);
		}
	}

	private void populateDoubleArray(ExpressionState state, Object newArray, TypeConverter typeConverter,
			InlineList initializer) {

		double[] newDoubleArray = (double[]) newArray;
		for (int i = 0; i < newDoubleArray.length; i++) {
			TypedValue typedValue = initializer.getChild(i).getTypedValue(state);
			newDoubleArray[i] = ExpressionUtils.toDouble(typeConverter, typedValue);
		}
	}

	private void populateShortArray(ExpressionState state, Object newArray, TypeConverter typeConverter,
			InlineList initializer) {

		short[] newShortArray = (short[]) newArray;
		for (int i = 0; i < newShortArray.length; i++) {
			TypedValue typedValue = initializer.getChild(i).getTypedValue(state);
			newShortArray[i] = ExpressionUtils.toShort(typeConverter, typedValue);
		}
	}

	private void populateLongArray(ExpressionState state, Object newArray, TypeConverter typeConverter,
			InlineList initializer) {

		long[] newLongArray = (long[]) newArray;
		for (int i = 0; i < newLongArray.length; i++) {
			TypedValue typedValue = initializer.getChild(i).getTypedValue(state);
			newLongArray[i] = ExpressionUtils.toLong(typeConverter, typedValue);
		}
	}

	private void populateCharArray(ExpressionState state, Object newArray, TypeConverter typeConverter,
			InlineList initializer) {

		char[] newCharArray = (char[]) newArray;
		for (int i = 0; i < newCharArray.length; i++) {
			TypedValue typedValue = initializer.getChild(i).getTypedValue(state);
			newCharArray[i] = ExpressionUtils.toChar(typeConverter, typedValue);
		}
	}

	private void populateBooleanArray(ExpressionState state, Object newArray, TypeConverter typeConverter,
			InlineList initializer) {

		boolean[] newBooleanArray = (boolean[]) newArray;
		for (int i = 0; i < newBooleanArray.length; i++) {
			TypedValue typedValue = initializer.getChild(i).getTypedValue(state);
			newBooleanArray[i] = ExpressionUtils.toBoolean(typeConverter, typedValue);
		}
	}

	private void populateIntArray(ExpressionState state, Object newArray, TypeConverter typeConverter,
			InlineList initializer) {

		int[] newIntArray = (int[]) newArray;
		for (int i = 0; i < newIntArray.length; i++) {
			TypedValue typedValue = initializer.getChild(i).getTypedValue(state);
			newIntArray[i] = ExpressionUtils.toInt(typeConverter, typedValue);
		}
	}

	private boolean hasInitializer() {
		return (getChildCount() > 1);
	}

	@Override
	public boolean isCompilable() {
		if (!(this.cachedExecutor instanceof ReflectiveConstructorExecutor) ||
			this.exitTypeDescriptor == null) {
			return false;
		}

		if (getChildCount() > 1) {
			for (int c = 1, max = getChildCount();c < max; c++) {
				if (!this.children[c].isCompilable()) {
					return false;
				}
			}
		}

		ReflectiveConstructorExecutor executor = (ReflectiveConstructorExecutor) this.cachedExecutor;
		if (executor == null) {
			return false;
		}
		Constructor<?> constructor = executor.getConstructor();
		return (Modifier.isPublic(constructor.getModifiers()) &&
				Modifier.isPublic(constructor.getDeclaringClass().getModifiers()));
	}

	@Override
	public void generateCode(MethodVisitor mv, CodeFlow cf) {
		ReflectiveConstructorExecutor executor = ((ReflectiveConstructorExecutor) this.cachedExecutor);
		Assert.state(executor != null, "No cached executor");

		Constructor<?> constructor = executor.getConstructor();
		String classDesc = constructor.getDeclaringClass().getName().replace('.', '/');
		mv.visitTypeInsn(NEW, classDesc);
		mv.visitInsn(DUP);

		// children[0] is the type of the constructor, don't want to include that in argument processing
		SpelNodeImpl[] arguments = new SpelNodeImpl[this.children.length - 1];
		System.arraycopy(this.children, 1, arguments, 0, this.children.length - 1);
		generateCodeForArguments(mv, cf, constructor, arguments);
		mv.visitMethodInsn(INVOKESPECIAL, classDesc, "<init>", CodeFlow.createSignatureDescriptor(constructor), false);
		cf.pushDescriptor(this.exitTypeDescriptor);
	}

}

Output:
【漏洞类型】业务逻辑安全漏洞
【严重性】Medium
【漏洞摘要】在Spring表达式语言（SpEL）中，`ConstructorReference`类允许用户通过表达式创建数组。由于未对数组的大小进行限制，用户可以尝试创建一个非常大的数组，这可能导致OutOfMemoryError（OOM）。虽然JVM会尝试恢复，但错误信息对用户来说不够明确，无法快速定位问题的根源。
【关键代码模式】
- `Array.newInstance(componentType, arraySize)`：用于创建数组实例的代码。
- `ExpressionUtils.toInt(typeConverter, o)`：用于将用户输入转换为数组大小的代码。
【修复方法说明】通过在`createArray`方法中引入`checkNumElements`函数，对数组的大小进行了限制，防止用户创建过大数组。


Instruction:
作为 Java 安全专家，检测此代码中的安全漏洞：
## 内容1
### 文件路径：
xwiki-platform-core/xwiki-platform-filter/xwiki-platform-filter-ui/src/main/resources/Filter/FilterStreamDescriptorForm.xml
### 代码内容：
<?xml version="1.1" encoding="UTF-8"?>

<xwikidoc version="1.2" reference="Filter.FilterStreamDescriptorForm" locale="">
  <web>Filter</web>
  <name>FilterStreamDescriptorForm</name>
  <language/>
  <defaultLanguage/>
  <translation>0</translation>
  <creator>xwiki:XWiki.Admin</creator>
  <parent>WebHome</parent>
  <author>xwiki:XWiki.Admin</author>
  <contentAuthor>xwiki:XWiki.Admin</contentAuthor>
  <version>1.1</version>
  <title/>
  <comment/>
  <minorEdit>false</minorEdit>
  <syntaxId>xwiki/2.1</syntaxId>
  <hidden>true</hidden>
  <content>{{velocity output="false"}}
#macro(filterDescriptorForm $descriptor $id)

    #foreach($descriptor in $descriptor.properties)
      #if ($id)
        #set($descriptorId = "${id}_descriptor_${descriptor.id}")
      #else
        #set($descriptorId = "descriptor_${descriptor.id}")
      #end

        $descriptor.name
        $descriptor.description
        <tt>#if($descriptor.type.name)$descriptor.type.name#{else}$descriptor.type#end</tt>
        #if ($descriptor.type.getName() == 'org.xwiki.filter.output.OutputTarget')
          <tt>Supported format is file:&lt;path in server&gt; (e.g. file:/home/myuser/target.xml). When empty it send a file named target to the browser.</tt>
        #elseif ($descriptor.type.getName() == 'org.xwiki.filter.input.InputSource')
          <tt>Supported formats are file:&lt;path in server&gt; (e.g. file:/home/myuser/target.ext) and url:&lt;url&gt; (e.g. url:http://myserver/some/file/to/parse.ext). When empty it read the request input stream.</tt>
        #end

        ## TODO: design a real framework to generate form by type
        #if (($descriptor.defaultValue || "$!descriptor.defaultValue" != '') && ($descriptor.type.getName() == 'boolean' || $descriptor.type.getName() == 'int' || $descriptor.type.getName() == 'java.lang.String'))
          <input type="text" id="$descriptorId" name="$descriptorId" value="#if($request.get($descriptorId))$request.get($descriptorId)#else$descriptor.defaultValue#end"/>
        #else
          <input type="text" id="$descriptorId" name="$descriptorId"#if($request.get($descriptorId))value="$request.get($descriptorId)"#end/>
        #end

    #end

#end
{{/velocity}}

{{velocity wiki=false}}
#if ($xcontext.action == 'get' && $request.type)
  #if ($request.input == 'true')
    #filterDescriptorForm($services.filter.getInputFilterStreamDescriptor($request.type), $request.id)
  #else
    #filterDescriptorForm($services.filter.getOutputFilterStreamDescriptor($request.type), $request.id)
  #end
#end
{{/velocity}}</content>
</xwikidoc>

Output:
【漏洞类型】XSS（跨站脚本攻击）
【严重性】High
【漏洞摘要】这是一个XSS漏洞。原始代码中，用户输入的请求参数`$request.get($descriptorId)`直接插入到HTML中，没有进行任何转义处理。这样，攻击者可以通过输入恶意脚本，使其在用户浏览器中执行，从而窃取用户信息或进行其他恶意操作。
【关键代码模式】`$request.get($descriptorId)`和`value="$request.get($descriptorId)"`。直接将用户输入的请求参数插入到HTML中，且没有进行适当的转义。
【修复方法说明】修复方法通过使用`$escapetool.xml($request.get($descriptorId))`对用户输入进行XML转义，以防止恶意脚本的执行。


Instruction:
作为 Java 安全专家，检测此代码中的安全漏洞：
## 内容1
### 文件路径：
xwiki-platform-core/xwiki-platform-wiki/xwiki-platform-wiki-ui/xwiki-platform-wiki-ui-mainwiki/src/main/resources/WikiManager/JoinWiki.xml
### 代码内容：
<?xml version="1.1" encoding="UTF-8"?>

<xwikidoc version="1.1">
  <web>WikiManager</web>
  <name>JoinWiki</name>
  <language/>
  <defaultLanguage/>
  <translation>0</translation>
  <creator>xwiki:XWiki.Admin</creator>
  <parent>WikiManager.WebHome</parent>
  <author>xwiki:XWiki.Admin</author>
  <contentAuthor>xwiki:XWiki.Admin</contentAuthor>
  <version>1.1</version>
  <title>$services.localization.render('platform.wiki.users.join.title')</title>
  <comment/>
  <minorEdit>false</minorEdit>
  <syntaxId>xwiki/2.0</syntaxId>
  <hidden>true</hidden>
  <content>{{velocity}}
#macro (printException $exception)
  #if($exception.message)
    {{error}}$services.localization.render('platform.wiki.error.exceptionWithMessage', [$exception.message]){{/error}}
  #else
    {{error}}$exception.class{{/error}}
  #end
#end
#set ($wikiId = $request.wikiId)
#set ($form_token = $request.form_token)
##
#if ("$!wikiId" == '')
  {{error}}{{translation key="platform.wiki.error.oneParameterNotSpecified" parameters="wikiId"/}}{{/error}}
#else
  ## FIXME: add plugin dependency checks.
  ##
  #set ($wiki = $services.wiki.getById($wikiId))
  #set ($wikiMainPage = $wiki.mainPageReference)
  #set ($wikiMainPageLinkStart = '')
  #set ($wikiMainPageLinkEnd = '')
  #if ($xwiki.exists($wikiMainPage))
    #set ($wikiMainPageLinkStart = '[[')
    #set ($wikiMainPageLinkEnd = ">>${wikiMainPage}]]")
  #end
  ##
  #if ("$!wiki" == '')
    #if ("$!{services.wiki.lastError}" != '')
      {{error}}$services.localization.render('platform.wiki.error.exceptionWithMessage', [$services.wiki.lastError.message]){{/error}}
    #else
      {{error}}$services.localization.render('platform.wiki.error.wikidoesnotexist', [$wikiId]){{/error}}
    #end
  #else
    #set ($wikiName = $wiki.prettyName)
    #if ("$!wikiName" == '')
      #set ($wikiName = $wikiId)
    #end
    #set ($currentUser = $services.model.serialize($xcontext.userReference, 'default'))
    ##
    #set ($members = $services.wiki.user.getMembers($wikiId))
    #if ($members && $members.contains($currentUser))
      {{info}}$services.localization.render('platform.wiki.users.userAlreadyMemberOfWiki', ['[[', $currentUser, ">>$currentUser]]", $wikiMainPageLinkStart, $wikiName, $wikiMainPageLinkEnd]){{/info}}
    #elseif ($currentUser == 'xwiki:XWiki.XWikiGuest')
      #set ($loginDocumentReference = $services.model.createDocumentReference($services.wiki.mainWikiId, 'XWiki', 'XWikiLogin'))
      #set ($loginDocument = $xwiki.getDocument($loginDocumentReference))
      #set ($loginUrl = $loginDocument.getExternalURL('login', "xredirect=$escapetool.url($xwiki.relativeRequestURL)"))
      {{error}}$services.localization.render('platform.wiki.users.logInToContinue', ['[[', ">>$loginUrl]]"]){{/error}}
    #else
      ## The user is not already a member of the wiki
      ##
      #set ($browseDocumentReference = $services.model.createDocumentReference($services.wiki.mainWikiId, 'WikiManager', 'WebHome'))
      #set ($backUrl = $xwiki.getURL($browseDocumentReference))
      ##
      #set ($membershipType = $services.wiki.user.getMembershipType($wiki.id))
      ##
      ## Determine if, regardless of membership type, an existing invitation exists for the current user.
      #set ($invitations = $services.wiki.user.getAllInvitations($wikiId))
      #set ($existingInvitation = false)
      #if ($invitations && !$invitations.isEmpty())
        #foreach($invitation in $invitations)
          #if ($invitation.userId == $currentUser && $invitation.status == 'PENDING')
            #set ($existingInvitation = $invitation)
          #end
        #end
      #end
      #if ($existingInvitation)
        ##
        ## An invitation exists.
        #if (($request.acceptInvitation || $request.rejectInvitation) && $services.csrf.isTokenValid($form_token))
          ##
          ## The user decided whether to accept or to reject the invitation.
          #set ($notificationMessage = $services.localization.render('platform.wiki.users.invitation.userAcceptedNotification', [${xwiki.getUserName($currentUser, false)}, $currentUser, ${wikiName}, $wikiId]))
          ## Accept
          #if ($request.acceptInvitation)
            #set ($discard = $services.wiki.user.acceptInvitation($existingInvitation, $request.userComment))
          #else
            #set ($discard = $services.wiki.user.refuseInvitation($existingInvitation, $request.userComment))
          #end
          ## Send message to wiki admins. (XWikiAdminGroup)
          #set ($wikiAdminGroupReference = $services.model.createDocumentReference($wikiId, 'XWiki', 'XWikiAdminGroup'))
          #set ($discard = $services.messageStream.postMessageToGroup($notificationMessage, $wikiAdminGroupReference))
          ## Display the proper success info.
          {{success}}
          #if ($request.acceptInvitation)
            $services.localization.render('platform.wiki.users.invitation.userAcceptedSuccess', ['[[', $currentUser, ">>$currentUser]]", $wikiMainPageLinkStart, $wikiName, $wikiMainPageLinkEnd])
          #else
            $services.localization.render('platform.wiki.users.invitation.userRejectedSuccess', ['[[', $currentUser, ">>$currentUser]]", $wikiMainPageLinkStart, $wikiName, $wikiMainPageLinkEnd])
          #end
          {{/success}}
        #else
          #if("$!form_token" != '')

             {{warning}}
               {{translation key="platform.wiki.csrf.error" /}}
             {{/warning}}

          #end
          ##
          ## User can decide if to accept or reject the invitation.
          {{html wiki='true'}}
          $services.localization.render('platform.wiki.users.invitation.title', [$wikiMainPageLinkStart, $wikiName, $wikiMainPageLinkEnd])

          <form class='xform third' method='post'>

            #if ("$!existingInvitation.get('reviewerComment').getValue()" != '')

                {{translation key="platform.wiki.users.invitation.message.label"/}}

                $existingInvitation.get('reviewerComment').getValue()

            #end

                {{translation key="platform.wiki.users.invitation.reply.title"/}}
                {{translation key="platform.wiki.users.invitation.reply.hint"/}}

<textarea name='userComment' rows='7' cols='45'></textarea>

                <input type='submit' name='acceptInvitation' value="$services.localization.render('platform.wiki.users.invitation.accept.label')" class='button'/>
                <input type='submit' name='rejectInvitation' value="$services.localization.render('platform.wiki.users.invitation.reject.label')" class='button'/>
                {{translation key="platform.wiki.users.invitation.postpone.label"/}}

              <input type="hidden" name="wikiId" value="$!escapetool.xml($wikiId)" />
              <input type="hidden" name="form_token" value="$!escapetool.xml($services.csrf.getToken())" />

          </form>
          {{/html}}
        #end
      ##
      ## The user is not invited to join. Continue based on the current membership type of the wiki.
      #elseif ($membershipType == 'INVITE')
        ##
        ## User does not have an invitation.
        {{error}}{{translation key="platform.wiki.users.join.error.needInvitation"/}}{{/error}}
      #elseif ($membershipType == 'REQUEST')
        ## Determine if a pending request already exists.
        ##
        #set ($pendingRequest = false)
        #set ($existingRequests = $services.wiki.user.getAllRequests($wikiId))
        #foreach ($existingRequest in $existingRequests)
          #if ($existingRequest.userId == $currentUser && $existingRequest.status == 'PENDING')
            #set ($pendingRequest = $existingRequest)
          #end
        #end
        #if ($pendingRequest)
          #if ("$!{request.cancelJoinRequest}" != '1')
            ## Request already exists.
            ##
            {{info}}$services.localization.render('platform.wiki.users.join.request.pendingRequestExists', ['[[', $currentUser, ">>$currentUser]]", $wikiMainPageLinkStart, $wikiName, $wikiMainPageLinkEnd]){{/info}}
          #elseif (!$services.csrf.isTokenValid($form_token))
            ## User wants to cancel existing request.
            ##
            #if("$!form_token" != '')

              {{warning}}
               {{translation key="platform.wiki.csrf.error" /}}
              {{/warning}}

            #end
            {{box}}
              $services.localization.render('platform.wiki.users.join.request.cancelConfirmation', [$wikiMainPageLinkStart, $wikiName, $wikiMainPageLinkEnd])
              ((({{html}}
                <form action="$doc.getURL()" method="post">
                  <fieldset>
                    <input type="hidden" name="wikiId" value="$!escapetool.xml($wikiId)" />
                    <input type="hidden" name="form_token" value="$!escapetool.xml($services.csrf.getToken())" />
                    <input type="hidden" name="cancelJoinRequest" value="1" />
                    <button class="button">$services.localization.render('platform.wiki.users.join.request.cancelYes')</button> $services.localization.render('platform.wiki.users.join.request.cancelNo')
                  </fieldset>
                </form>
              {{/html}})))
            {{/box}}
          #else
            ## User confirms the cancel of existing request.
            ##
            #set ($result = $services.wiki.user.cancelCandidacy($pendingRequest))
            #if ($result)
              {{success}}$services.localization.render('platform.wiki.users.join.request.cancelSuccess',  ['[[', $currentUser, ">>$currentUser]]", $wikiMainPageLinkStart, $wikiName, $wikiMainPageLinkEnd]){{/success}}
            #else
              #printException($services.wiki.user.lastError.message)
            #end
          #end
        #elseif (!$services.csrf.isTokenValid($form_token))
          ## Join request.
          ##
          #if("$!form_token" != '')

           {{warning}}
             {{translation key="platform.wiki.csrf.error" /}}
           {{/warning}}

          #end

          {{html wiki='true'}}
            $services.localization.render('platform.wiki.users.join.request.hint', [$wikiMainPageLinkStart, $wikiName, $wikiMainPageLinkEnd])

            <form class='xform third' method='GET'>

                  {{translation key="platform.wiki.users.join.request.message.label"/}}
                  {{translation key="platform.wiki.users.join.request.message.hint"/}}

<textarea name='userComment' rows='7' cols='45'></textarea>

                  <input type='submit' name='submit' value="$services.localization.render('platform.wiki.users.join.request.send.label')" class='button'/>
                  {{translation key="platform.wiki.users.join.request.cancel.label"/}}

                <input type='hidden' name='wikiId' value="$!wikiId"/>
                <input type='hidden' name='requestJoin' value="$!request.requestJoin"/>
                <input type="hidden" name="form_token" value="$!escapetool.xml($services.csrf.getToken())" />

            </form>
          {{/html}}
        #else
          ## User confirmed the join request.
          ##
          #set ($request = $services.wiki.user.askToJoin($currentUser, $wikiId, $request.userComment))
          #if ($request)
            ## Send message to wiki admins. (XWikiAdminGroup)
            #set ($wikiAdminGroupReference = $services.model.createDocumentReference($wikiId, 'XWiki', 'XWikiAdminGroup'))
            #set ($notificationMessage = $services.localization.render('platform.wiki.users.join.request.saveNotification', [${xwiki.getUserName($currentUser, false)}, $currentUser, $wikiName, $wikiId]))
            #set ($discard = $services.messageStream.postMessageToGroup($notificationMessage, $wikiAdminGroupReference))
            {{success}}$services.localization.render('platform.wiki.users.join.request.success', ['[[', $currentUser, ">>$currentUser]]", $wikiMainPageLinkStart, $wikiName, $wikiMainPageLinkEnd]){{/success}}
          #else
            #printException($services.wiki.user.lastError.message)
          #end
        #end
      #else
        ## Open membership as default.
        ##
        #if (!$services.csrf.isTokenValid($form_token))
          ## Open join.
          ##
          #if("$!form_token" != '')

           {{warning}}
             {{translation key="platform.wiki.csrf.error" /}}
           {{/warning}}

          #end
          {{box}}
            $services.localization.render('platform.wiki.users.join.confirmation', [$wikiMainPageLinkStart, $wikiName, $wikiMainPageLinkEnd])
            ((({{html}}
              <form action="$doc.getURL()" method="post">
                <fieldset>
                  <input type="hidden" name="wikiId" value="$!escapetool.xml($wikiId)" />
                  <input type="hidden" name="form_token" value="$!escapetool.xml($services.csrf.getToken())" />
                  <button class="button">$services.localization.render('platform.wiki.users.join.yes')</button> $services.localization.render('platform.wiki.users.join.no')
                </fieldset>
              </form>
            {{/html}})))
          {{/box}}
        #else
          ## User confirmed to join the wiki.
          ##
          #set ($result = $services.wiki.user.join($currentUser, $wikiId))
          #if ($result)
            {{success}}$services.localization.render('platform.wiki.users.join.success', ['[[', $currentUser, ">>$currentUser]]", $wikiMainPageLinkStart, $wikiName, $wikiMainPageLinkEnd]){{/success}}
          #else
            #printException($services.wiki.user.lastError.message)
          #end
        #end
      #end
    #end
  #end
#end
{{/velocity}}</content>
</xwikidoc>

Output:
【漏洞类型】XSS漏洞

【严重性】High

【漏洞摘要】这是一个跨站脚本（XSS）漏洞。代码中对用户输入（如`$request.requestJoin`）的处理不够严格，直接在HTML表单中使用了用户输入值，而没有对其进行适当的转义。

【关键代码模式】
- `$request.requestJoin`：用户输入值。
- `{{html wiki='true'}}`：允许HTML内容的渲染。
- `<input type='hidden' name='requestJoin' value="$!request.requestJoin"/>`：直接将用户输入值嵌入到HTML表单中。

【修复方法说明】修复方法是对用户输入值进行XML转义处理，以防止XSS攻击。适用的最佳实践包括对所有用户输入进行适当的转义和验证，以防止恶意代码的注入。


Instruction:
作为 Java 安全专家，检测此代码中的安全漏洞：
## 内容1
### 文件路径：
xwiki-platform-core/xwiki-platform-oldcore/src/main/java/com/xpn/xwiki/internal/skin/AbstractResourceSkin.java
### 代码内容：
/*
 * See the NOTICE file distributed with this work for additional
 * information regarding copyright ownership.
 *
 * This is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation; either version 2.1 of
 * the License, or (at your option) any later version.
 *
 * This software is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this software; if not, write to the Free
 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
 */
package com.xpn.xwiki.internal.skin;

import java.net.URL;
import java.nio.file.Path;
import java.nio.file.Paths;

import org.apache.commons.configuration2.BaseConfiguration;
import org.apache.commons.configuration2.Configuration;
import org.apache.commons.configuration2.builder.fluent.Configurations;
import org.apache.commons.configuration2.ex.ConfigurationException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.xwiki.filter.input.InputSource;
import org.xwiki.skin.Resource;
import org.xwiki.skin.Skin;

import static org.apache.commons.lang3.exception.ExceptionUtils.getRootCauseMessage;

/**
 * Common abstract class for the skins that manipulate resources.
 *
 * @version $Id$
 * @since 13.8RC1
 */
public abstract class AbstractResourceSkin extends AbstractSkin
{
    protected static final Logger LOGGER = LoggerFactory.getLogger(AbstractResourceSkin.class);

    private Configuration properties;

    /**
     * Default constructor.
     *
     * @param id the skin id (for instance, {@code "flamingo"})
     * @param skinManager the skin manager that instantiates this skin
     * @param configuration the skin internal configuration, used to access the default parent skin id
     * @param logger a logger used to log warning in case of error when parsin a skin's syntax
     */
    public AbstractResourceSkin(String id, InternalSkinManager skinManager,
        InternalSkinConfiguration configuration, Logger logger)
    {
        super(id, skinManager, configuration, logger);
    }

    abstract AbstractResource<InputSource> createResource(String resourcePath, String resourceName);

    abstract URL getResourceURL(String resourcePath);

    @Override
    public String getOutputSyntaxString()
    {
        return getProperties().getString("outputSyntax");
    }

    @Override
    protected Skin createParent()
    {
        Skin skin;

        String parentId = getProperties().getString("parent");

        if (parentId != null) {
            if (parentId.isEmpty()) {
                // There is explicitly no parent (make sure to not fallback on default parent skin)
                skin = VOID;
            } else {
                skin = this.skinManager.getSkin(parentId);
            }
        } else {
            skin = null;
        }

        return skin;
    }

    @Override
    public Resource<?> getLocalResource(String resourceName)
    {
        String resourcePath = getSkinResourcePath(resourceName);

        if (resourcePath != null && getResourceURL(resourcePath) != null) {
            return createResource(resourcePath, resourceName);
        }

        return null;
    }

    protected String getPropertiesPath()
    {
        return getSkinFolder() + "skin.properties";
    }

    protected String getSkinFolder()
    {
        return "skins/" + this.id + '/';
    }

    protected Configuration getProperties()
    {
        if (this.properties == null) {
            URL url = getResourceURL(getPropertiesPath());
            if (url != null) {
                try {
                    this.properties = new Configurations().properties(url);
                } catch (ConfigurationException e) {
                    LOGGER.error("Failed to load skin [{}] properties file ([])", this.id, url,
                        getRootCauseMessage(e));

                    this.properties = new BaseConfiguration();
                }
            } else {
                LOGGER.debug("No properties found for skin [{}]", this.id);

                this.properties = new BaseConfiguration();
            }
        }

        return this.properties;
    }

    private String getSkinResourcePath(String resource)
    {
        String skinFolder = getSkinFolder();
        String resourcePath = skinFolder + resource;

        // Prevent inclusion of templates from other directories
        Path normalizedResource = Paths.get(resourcePath).normalize();
        // Protect against directory attacks.
        if (!normalizedResource.startsWith(skinFolder)) {
            LOGGER.warn("Direct access to skin file [{}] refused. Possible break-in attempt!", normalizedResource);
            return null;
        }

        return resourcePath;
    }
}

## 内容2
### 文件路径：
xwiki-platform-core/xwiki-platform-oldcore/src/main/java/com/xpn/xwiki/internal/template/InternalTemplateManager.java
### 代码内容：
/*
 * See the NOTICE file distributed with this work for additional
 * information regarding copyright ownership.
 *
 * This is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation; either version 2.1 of
 * the License, or (at your option) any later version.
 *
 * This software is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this software; if not, write to the Free
 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
 */
package com.xpn.xwiki.internal.template;

import java.io.StringWriter;
import java.io.Writer;
import java.lang.reflect.Type;
import java.net.URL;
import java.nio.charset.StandardCharsets;
import java.util.AbstractSet;
import java.util.Arrays;
import java.util.Collections;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.concurrent.Callable;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

import javax.inject.Inject;
import javax.inject.Named;
import javax.inject.Provider;
import javax.inject.Singleton;

import org.apache.commons.io.IOUtils;
import org.apache.commons.lang3.StringUtils;
import org.slf4j.Logger;
import org.xwiki.component.annotation.Component;
import org.xwiki.component.manager.ComponentLookupException;
import org.xwiki.component.manager.ComponentManager;
import org.xwiki.component.phase.Initializable;
import org.xwiki.component.phase.InitializationException;
import org.xwiki.configuration.ConfigurationSource;
import org.xwiki.environment.Environment;
import org.xwiki.filter.input.InputSource;
import org.xwiki.filter.input.InputStreamInputSource;
import org.xwiki.filter.input.ReaderInputSource;
import org.xwiki.filter.input.StringInputSource;
import org.xwiki.job.event.status.JobProgressManager;
import org.xwiki.model.reference.DocumentReference;
import org.xwiki.model.reference.DocumentReferenceResolver;
import org.xwiki.properties.BeanManager;
import org.xwiki.properties.ConverterManager;
import org.xwiki.properties.PropertyException;
import org.xwiki.properties.RawProperties;
import org.xwiki.properties.annotation.PropertyHidden;
import org.xwiki.properties.annotation.PropertyId;
import org.xwiki.rendering.async.internal.AsyncRendererConfiguration;
import org.xwiki.rendering.async.internal.block.BlockAsyncRendererExecutor;
import org.xwiki.rendering.block.Block;
import org.xwiki.rendering.block.CompositeBlock;
import org.xwiki.rendering.block.RawBlock;
import org.xwiki.rendering.block.XDOM;
import org.xwiki.rendering.parser.ContentParser;
import org.xwiki.rendering.renderer.BlockRenderer;
import org.xwiki.rendering.renderer.printer.WikiPrinter;
import org.xwiki.rendering.renderer.printer.WriterWikiPrinter;
import org.xwiki.rendering.syntax.Syntax;
import org.xwiki.rendering.transformation.RenderingContext;
import org.xwiki.rendering.util.ErrorBlockGenerator;
import org.xwiki.skin.Resource;
import org.xwiki.skin.ResourceRepository;
import org.xwiki.skin.Skin;
import org.xwiki.template.Template;
import org.xwiki.template.TemplateContent;

import com.xpn.xwiki.XWiki;
import com.xpn.xwiki.internal.skin.AbstractSkinResource;
import com.xpn.xwiki.internal.skin.InternalSkinManager;
import com.xpn.xwiki.internal.skin.WikiResource;
import com.xpn.xwiki.user.api.XWikiRightService;

/**
 * Internal toolkit to experiment on templates.
 *
 * @version $Id$
 * @since 7.0M1
 */
@Component(roles = InternalTemplateManager.class)
@Singleton
public class InternalTemplateManager implements Initializable
{
    /**
     * The reference of the superadmin user.
     */
    public static final DocumentReference SUPERADMIN_REFERENCE =
        new DocumentReference("xwiki", XWiki.SYSTEM_SPACE, XWikiRightService.SUPERADMIN_USER);

    private static final Pattern PROPERTY_LINE = Pattern.compile("^##!(.+)=(.*)$\r?\n?", Pattern.MULTILINE);

    private static final String TEMPLATE_RESOURCE_SUFFIX = "/templates/";

    @Inject
    private Environment environment;

    @Inject
    private ContentParser parser;

    @Inject
    @Named("context")
    private Provider<ComponentManager> componentManagerProvider;

    @Inject
    private RenderingContext renderingContext;

    @Inject
    @Named("plain/1.0")
    private BlockRenderer plainRenderer;

    @Inject
    @Named("xwikicfg")
    private ConfigurationSource xwikicfg;

    @Inject
    @Named("all")
    private ConfigurationSource allConfiguration;

    @Inject
    @Named("currentmixed")
    private DocumentReferenceResolver<String> currentMixedDocumentReferenceResolver;

    @Inject
    private BeanManager beanManager;

    @Inject
    private ConverterManager converter;

    @Inject
    private InternalSkinManager skins;

    @Inject
    private JobProgressManager progress;

    @Inject
    private Provider<TemplateAsyncRenderer> rendererProvider;

    @Inject
    private BlockAsyncRendererExecutor asyncExecutor;

    @Inject
    private TemplateContext templateContext;

    @Inject
    private VelocityTemplateEvaluator evaluator;

    @Inject
    private Provider<ErrorBlockGenerator> errorBlockGeneratorProvider;

    @Inject
    private Logger logger;

    private String templateRootURL;

    private static abstract class AbtractTemplate<T extends TemplateContent, R extends Resource<?>> implements Template
    {
        protected R resource;

        protected T content;

        public AbtractTemplate(R resource)
        {
            this.resource = resource;
        }

        @Override
        public String getId()
        {
            return this.resource.getId();
        }

        @Override
        public String getPath()
        {
            return this.resource.getPath();
        }

        @Override
        public TemplateContent getContent() throws Exception
        {
            if (this.content == null) {
                // TODO: work with streams instead of forcing String
                String strinContent;

                try (InputSource source = this.resource.getInputSource()) {
                    if (source instanceof StringInputSource) {
                        strinContent = source.toString();
                    } else if (source instanceof ReaderInputSource) {
                        strinContent = IOUtils.toString(((ReaderInputSource) source).getReader());
                    } else if (source instanceof InputStreamInputSource) {
                        // It's impossible to know the real attachment encoding, but let's assume that they respect the
                        // standard and use UTF-8 (which is required for the files located on the filesystem)
                        strinContent = IOUtils.toString(((InputStreamInputSource) source).getInputStream(),
                            StandardCharsets.UTF_8);
                    } else {
                        return null;
                    }
                }

                this.content = getContentInternal(strinContent);
            }

            return this.content;
        }

        protected abstract T getContentInternal(String content) throws Exception;

        @Override
        public String toString()
        {
            return this.resource.getId();
        }
    }

    private class EnvironmentTemplate extends AbtractTemplate<FilesystemTemplateContent, AbstractSkinResource>
    {
        EnvironmentTemplate(AbstractSkinResource resource)
        {
            super(resource);
        }

        @Override
        protected FilesystemTemplateContent getContentInternal(String content)
        {
            return new FilesystemTemplateContent(content);
        }
    }

    private class ClassloaderTemplate extends AbtractTemplate<FilesystemTemplateContent, ClassloaderResource>
    {
        ClassloaderTemplate(ClassloaderResource resource)
        {
            super(resource);
        }

        @Override
        protected FilesystemTemplateContent getContentInternal(String content)
        {
            return new FilesystemTemplateContent(content);
        }
    }

    private class DefaultTemplate extends AbtractTemplate<DefaultTemplateContent, Resource<?>>
    {
        DefaultTemplate(Resource<?> resource)
        {
            super(resource);
        }

        @Override
        protected DefaultTemplateContent getContentInternal(String content)
        {
            if (this.resource instanceof WikiResource) {
                WikiResource<?> wikiResource = ((WikiResource<?>) this.resource);
                return new DefaultTemplateContent(content, wikiResource.getAuthorReference(),
                    wikiResource.getDocumentReference());
            } else {
                return new DefaultTemplateContent(content);
            }
        }
    }

    private class StringTemplate extends DefaultTemplate
    {
        StringTemplate(String content, DocumentReference authorReference, DocumentReference documentReference)
            throws Exception
        {
            super(new StringResource(content));

            // As StringTemplate extends DefaultTemplate, the TemplateContent is DefaultTemplateContent
            ((DefaultTemplateContent) this.getContent()).setAuthorReference(authorReference);
            ((DefaultTemplateContent) this.getContent()).setDocumentReference(documentReference);
        }
    }

    private class DefaultTemplateContent implements RawProperties, TemplateContent
    {
        // TODO: work with streams instead
        protected String content;

        protected boolean authorProvided;

        protected DocumentReference authorReference;

        protected DocumentReference documentReference;

        @PropertyId("source.syntax")
        public Syntax sourceSyntax;

        @PropertyId("raw.syntax")
        public Syntax rawSyntax;

        public boolean cacheAllowed;

        public boolean asyncAllowed;

        public Set<String> contextEntries;

        public UniqueContext unique;

        protected Map<String, Object> properties = new HashMap<>();

        DefaultTemplateContent(String content)
        {
            this.content = content;

            init();
        }

        DefaultTemplateContent(String content, DocumentReference authorReference)
        {
            this(content);

            setAuthorReference(authorReference);
        }

        DefaultTemplateContent(String content, DocumentReference authorReference, DocumentReference sourceReference)
        {
            this(content, authorReference);

            setDocumentReference(sourceReference);
        }

        @Override
        public Syntax getSourceSyntax()
        {
            return this.sourceSyntax;
        }

        @Override
        public Syntax getRawSyntax()
        {
            return this.rawSyntax;
        }

        @Override
        public boolean isAsyncAllowed()
        {
            return this.asyncAllowed;
        }

        @Override
        public boolean isCacheAllowed()
        {
            return this.cacheAllowed;
        }

        @Override
        public UniqueContext getUnique()
        {
            return this.unique;
        }

        @Override
        public Set<String> getContextEntries()
        {
            if (this.contextEntries == null) {
                return Collections.emptySet();
            }

            if (this.contextEntries instanceof AbstractSet) {
                this.contextEntries = Collections.unmodifiableSet(this.contextEntries);
            }

            return this.contextEntries;
        }

        @Override
        public <T> T getProperty(String name, T def)
        {
            if (!this.properties.containsKey(name)) {
                return def;
            }

            if (def != null) {
                return getProperty(name, def.getClass());
            }

            return (T) this.properties.get(name);
        }

        @Override
        public <T> T getProperty(String name, Type type)
        {
            return converter.convert(type, this.properties.get(name));
        }

        protected void init()
        {
            Matcher matcher = PROPERTY_LINE.matcher(this.content);

            Map<String, String> map = new HashMap<>();
            while (matcher.find()) {
                String key = matcher.group(1);
                String value = matcher.group(2);

                map.put(key, value);

                // Remove the line from the content
                this.content = this.content.substring(matcher.end());
            }

            try {
                InternalTemplateManager.this.beanManager.populate(this, map);
            } catch (PropertyException e) {
                // Should never happen
                InternalTemplateManager.this.logger.error("Failed to populate properties of template", e);
            }
        }

        @Override
        public String getContent()
        {
            return this.content;
        }

        @PropertyHidden
        @Override
        public boolean isAuthorProvided()
        {
            return this.authorProvided;
        }

        @PropertyId("author")
        @Override
        public DocumentReference getAuthorReference()
        {
            return this.authorReference;
        }

        protected void setAuthorReference(DocumentReference authorReference)
        {
            this.authorReference = authorReference;
            this.authorProvided = true;
        }

        @Override
        public DocumentReference getDocumentReference()
        {
            return this.documentReference;
        }

        protected void setDocumentReference(DocumentReference documentReference)
        {
            this.documentReference = documentReference;
        }

        // RawProperties

        @Override
        public void set(String propertyName, Object value)
        {
            this.properties.put(propertyName, value);
        }
    }

    private class FilesystemTemplateContent extends DefaultTemplateContent
    {
        public FilesystemTemplateContent(String content)
        {
            super(content);

            // Give programming right to filesystem templates by default
            setPrivileged(true);
        }

        /**
         * {@inheritDoc}
         * <p>
         * Allow filesystem template to indicate the user to executed them with.
         * </p>
         *
         * @see #setAuthorReference(DocumentReference)
         */
        @Override
        public void setAuthorReference(DocumentReference authorReference)
        {
            super.setAuthorReference(authorReference);
        }

        /**
         * Made public to be seen as bean property.
         *
         * @since 6.3.1
         * @since 6.4M1
         */
        @SuppressWarnings("unused")
        public boolean isPrivileged()
        {
            return SUPERADMIN_REFERENCE.equals(getAuthorReference());
        }

        /**
         * Made public to be seen as bean property.
         *
         * @since 6.3.1
         * @since 6.4M1
         */
        public void setPrivileged(boolean privileged)
        {
            if (privileged) {
                setAuthorReference(SUPERADMIN_REFERENCE);
            } else {
                // Reset author
                this.authorReference = null;
                this.authorProvided = false;
            }
        }
    }

    @Override
    public void initialize() throws InitializationException
    {
        getTemplateRootPath();
    }

    private String getTemplateRootPath()
    {
        if (this.templateRootURL == null) {
            URL url = this.environment.getResource(TEMPLATE_RESOURCE_SUFFIX);

            if (url != null) {
                this.templateRootURL = url.toString();
            }
        }

        return this.templateRootURL;
    }

    private String getTemplateResourcePath(String templateName)
    {
        String templatePath = TEMPLATE_RESOURCE_SUFFIX + templateName;

        URL templateURL = this.environment.getResource(templatePath);

        // Check if the resource exist
        if (templateURL == null) {
            return null;
        }

        // Prevent inclusion of templates from other directories
        String rootTemplate = getTemplateRootPath();
        if (rootTemplate != null) {
            String templateURLString = templateURL.toString();
            if (!templateURLString.startsWith(getTemplateRootPath())) {
                this.logger.warn("Direct access to template file [{}] refused. Possible break-in attempt!",
                    templateURLString);

                return null;
            }
        }

        return templatePath;
    }

    private void renderError(Throwable throwable, boolean inline, Writer writer)
    {
        Block block = generateError(throwable, inline);

        render(block, writer);
    }

    private Block generateError(Throwable throwable, boolean inline)
    {
        List<Block> errorBlocks = this.errorBlockGeneratorProvider.get().generateErrorBlocks(inline, null,
            "Failed to execute template", null, throwable);

        if (inline) {
            if (errorBlocks.size() == 1) {
                return errorBlocks.get(0);
            } else {
                return new CompositeBlock(errorBlocks);
            }
        } else {
            return new XDOM(errorBlocks);
        }
    }

    /**
     * @param templateName the template to parse
     * @return the result of the template parsing
     */
    public XDOM getXDOMNoException(String templateName)
    {
        XDOM xdom;

        try {
            xdom = getXDOM(templateName);
        } catch (Throwable e) {
            this.logger.error("Error while getting template [{}] XDOM", templateName, e);

            xdom = (XDOM) generateError(e, false);
        }

        return xdom;
    }

    /**
     * @param template the template to parse
     * @return the result of the template parsing
     * @since 8.3RC1
     */
    public XDOM getXDOMNoException(Template template)
    {
        XDOM xdom;

        try {
            xdom = getXDOM(template);
        } catch (Throwable e) {
            this.logger.error("Error while getting template [{}] XDOM", template.getId(), e);

            xdom = (XDOM) generateError(e, false);
        }

        return xdom;
    }

    public XDOM getXDOM(Template template) throws Exception
    {
        XDOM xdom;

        if (template != null) {
            xdom = getXDOM(template, template.getContent());
        } else {
            xdom = new XDOM(Collections.<Block>emptyList());
        }

        return xdom;
    }

    private XDOM getXDOM(Template template, TemplateContent content) throws Exception
    {
        XDOM xdom;

        if (content.getSourceSyntax() != null) {
            xdom = this.parser.parse(content.getContent(), content.getSourceSyntax());
        } else {
            String result = evaluateContent(template, content);
            if (StringUtils.isEmpty(result)) {
                xdom = new XDOM(Collections.emptyList());
            } else {
                xdom = new XDOM(Arrays.asList(new RawBlock(result, content.getRawSyntax() != null
                    ? content.getRawSyntax() : this.renderingContext.getTargetSyntax())));
            }
        }

        return xdom;
    }

    public XDOM getXDOM(String templateName) throws Exception
    {
        Template template = getTemplate(templateName);

        return getXDOM(template);
    }

    public String renderNoException(String template, boolean inline)
    {
        Writer writer = new StringWriter();

        renderNoException(template, inline, writer);

        return writer.toString();
    }

    public void renderNoException(String templateName, boolean inline, Writer writer)
    {
        try {
            render(templateName, inline, writer);
        } catch (Exception e) {
            this.logger.error("Error while rendering template [{}]", templateName, e);

            renderError(e, inline, writer);
        }
    }

    /**
     * @since 8.3RC1
     */
    public void renderNoException(Template template, boolean inline, Writer writer)
    {
        try {
            render(template, inline, writer);
        } catch (Exception e) {
            this.logger.error("Error while rendering template [{}]", template, e);

            renderError(e, inline, writer);
        }
    }

    public String render(String templateName, boolean inline) throws Exception
    {
        return renderFromSkin(templateName, (Skin) null, inline);
    }

    public String renderFromSkin(String templateName, String skinId, boolean inline) throws Exception
    {
        Skin skin = this.skins.getSkin(skinId);

        return skin != null ? renderFromSkin(templateName, skin, inline) : null;
    }

    public String renderFromSkin(String templateName, Skin skin, boolean inline) throws Exception
    {
        Writer writer = new StringWriter();

        renderFromSkin(templateName, skin, inline, writer);

        return writer.toString();
    }

    public void render(String templateName, boolean inline, Writer writer) throws Exception
    {
        renderFromSkin(templateName, null, inline, writer);
    }

    public void renderFromSkin(final String templateName, ResourceRepository repository, boolean inline,
        final Writer writer) throws Exception
    {
        this.progress.startStep(templateName, "template.render.message", "Render template [{}]", templateName);

        try {
            final Template template =
                repository != null ? getTemplate(templateName, repository) : getTemplate(templateName);

            if (template != null) {
                render(template, inline, writer);
            }
        } finally {
            this.progress.endStep(templateName);
        }
    }

    public void render(Template template, boolean inline, Writer writer) throws Exception
    {
        if (!shouldExecute(template)) {
            return;
        }

        TemplateAsyncRenderer renderer = this.rendererProvider.get();

        Set<String> contextEntries = renderer.initialize(template, inline, false);

        AsyncRendererConfiguration configuration = new AsyncRendererConfiguration();

        configuration.setContextEntries(contextEntries);

        TemplateContent templateContent = template.getContent();
        if (templateContent.isAuthorProvided()) {
            configuration.setSecureReference(templateContent.getDocumentReference(),
                templateContent.getAuthorReference());
        }

        String result = this.asyncExecutor.render(renderer, configuration);

        writer.append(result);
    }

    private boolean shouldExecute(Template template) throws Exception
    {
        return template != null
            && (template.getContent().getUnique() == null || !this.templateContext.isExecuted(template));
    }

    private void render(Block block, Writer writer)
    {
        WikiPrinter printer = new WriterWikiPrinter(writer);

        BlockRenderer blockRenderer;
        try {
            blockRenderer =
                this.componentManagerProvider.get().getInstance(BlockRenderer.class, getTargetSyntax().toIdString());
        } catch (ComponentLookupException e) {
            blockRenderer = this.plainRenderer;
        }

        blockRenderer.render(block, printer);
    }

    public Block executeNoException(String templateName, boolean inline)
    {
        Block block;

        try {
            block = execute(templateName, inline);
        } catch (Throwable e) {
            this.logger.error("Error while executing template [{}]", templateName, e);

            block = generateError(e, inline);
        }

        return block;
    }

    /**
     * @since 14.0RC1
     */
    public Block executeNoException(Template template, boolean inline)
    {
        Block block;

        try {
            block = execute(template, inline);
        } catch (Throwable e) {
            this.logger.error("Error while executing template [{}]", template.getId(), e);

            block = generateError(e, inline);
        }

        return block;
    }

    /**
     * @since 14.0RC1
     */
    public Block execute(String templateName, boolean inline) throws Exception
    {
        final Template template = getTemplate(templateName);

        return execute(template, inline);
    }

    /**
     * @since 14.0RC1
     */
    public Block execute(Template template, boolean inline) throws Exception
    {
        if (!shouldExecute(template)) {
            return new XDOM(Collections.emptyList());
        }

        TemplateAsyncRenderer renderer = this.rendererProvider.get();

        Set<String> contextEntries = renderer.initialize(template, inline, true);

        AsyncRendererConfiguration configuration = new AsyncRendererConfiguration();

        configuration.setContextEntries(contextEntries);

        if (template.getContent().isAuthorProvided()) {
            configuration.setSecureReference(template.getContent().getDocumentReference(),
                template.getContent().getAuthorReference());
        }

        Block block = this.asyncExecutor.execute(renderer, configuration);

        if (inline) {
            return block;
        }

        if (block instanceof XDOM) {
            return (XDOM) block;
        }

        return new XDOM(Collections.singletonList(block));
    }

    private String evaluateContent(Template template, TemplateContent content) throws Exception
    {
        Writer writer = new StringWriter();

        this.evaluator.evaluateContent(template, content, writer);

        return writer.toString();
    }

    private Syntax getTargetSyntax()
    {
        Syntax targetSyntax = this.renderingContext.getTargetSyntax();

        return targetSyntax != null ? targetSyntax : Syntax.PLAIN_1_0;
    }

    private EnvironmentTemplate getFileSystemTemplate(String templateName)
    {
        String path = getTemplateResourcePath(templateName);

        return path != null ? new EnvironmentTemplate(new TemplateSkinResource(path, templateName, this.environment))
            : null;
    }

    private Template getClassloaderTemplate(String suffixPath, String templateName)
    {
        return getClassloaderTemplate(Thread.currentThread().getContextClassLoader(), suffixPath, templateName);
    }

    private Template getClassloaderTemplate(ClassLoader classloader, String suffixPath, String templateName)
    {
        String templatePath = suffixPath + templateName;

        URL url = classloader.getResource(templatePath);

        return url != null ? new ClassloaderTemplate(new ClassloaderResource(url, templateName)) : null;
    }

    private Template createTemplate(Resource<?> resource)
    {
        Template template;

        if (resource instanceof AbstractSkinResource) {
            template = new EnvironmentTemplate((AbstractSkinResource) resource);
        } else {
            template = new DefaultTemplate(resource);
        }

        return template;
    }

    public Template getResourceTemplate(String templateName, ResourceRepository repository)
    {
        Resource<?> resource = repository.getLocalResource(templateName);
        if (resource != null) {
            return createTemplate(resource);
        }

        return null;
    }

    public Template getTemplate(String templateName, ResourceRepository repository)
    {
        Resource<?> resource = repository.getResource(templateName);
        if (resource != null) {
            return createTemplate(resource);
        }

        return null;
    }

    public Template getTemplate(String templateName)
    {
        Template template = null;

        // Try from skin
        Skin skin = this.skins.getCurrentSkin(false);
        if (skin != null) {
            template = getTemplate(templateName, skin);
        }

        // Try from base skin if no skin is set
        if (skin == null) {
            Skin baseSkin = this.skins.getCurrentParentSkin(false);
            if (baseSkin != null) {
                template = getTemplate(templateName, baseSkin);
            }
        }

        // Try from /templates/ environment resources
        if (template == null) {
            template = getFileSystemTemplate(templateName);
        }

        // Try from current Thread classloader
        if (template == null) {
            template = getClassloaderTemplate("templates/", templateName);
        }

        return template;
    }

    /**
     * Create a new template using a given content and a specific author and source document.
     *
     * @param content the template content
     * @param author the template author
     * @param sourceReference the reference of the document associated with the {@link Callable} (which will be used to
     *            test the author right)
     * @return the template
     * @throws Exception if an error occurred during template instantiation
     * @since 14.0RC1
     */
    public Template createStringTemplate(String content, DocumentReference author, DocumentReference sourceReference)
        throws Exception
    {
        return new StringTemplate(content, author, sourceReference);
    }
}

Output:
【漏洞类型】路径遍历漏洞
【严重性】High
【漏洞摘要】这是一个路径遍历漏洞。在原始代码中，`getTemplateResourcePath` 和 `getClassloaderTemplate` 方法未对资源路径进行充分验证，可能导致攻击者通过构造特定的 `templateName` 参数访问系统上的任意文件。
【关键代码模式】`getClassloaderTemplate` 方法中的 `path = suffixPath + templateName` 和 `getFileSystemTemplate` 方法中的 `path = getTemplateResourcePath(templateName)`。
【修复方法说明】修复方法通过在路径处理中使用 `Paths.get(templatePath).normalize()` 和检查路径是否以指定前缀开头，防止路径遍历攻击。


Instruction:
作为 Java 安全专家，检测此代码中的安全漏洞：
## 内容1
### 文件路径：
xwiki-platform-core/xwiki-platform-flamingo/xwiki-platform-flamingo-theme/xwiki-platform-flamingo-theme-ui/src/main/resources/FlamingoThemesCode/WebHomeSheet.xml
### 代码内容：
<?xml version="1.1" encoding="UTF-8"?>

<xwikidoc version="1.1">
  <web>FlamingoThemesCode</web>
  <name>WebHomeSheet</name>
  <language/>
  <defaultLanguage/>
  <translation>0</translation>
  <creator>xwiki:XWiki.Admin</creator>
  <parent>Main.WebHome</parent>
  <author>xwiki:XWiki.Admin</author>
  <contentAuthor>xwiki:XWiki.Admin</contentAuthor>
  <version>1.1</version>
  <title>$services.localization.render('platform.flamingo.themes.home.title')</title>
  <comment/>
  <minorEdit>false</minorEdit>
  <syntaxId>xwiki/2.1</syntaxId>
  <hidden>true</hidden>
  <content>{{velocity}}
################################
## Globals
################################
#set ($discard = $xwiki.ssx.use('FlamingoThemesCode.WebHomeSheet'))
####################################
## CONTROLLER
####################################
#if($request.action == 'setTheme')
  #setTheme()
#elseif($request.action == 'setThemeSuccess')
  #prepareView()
  #setThemeSuccess()
  #view()
#elseif($request.action == 'create')
  #create()
#else
  #prepareView()
  #view()
#end
####################################
## PREPARE VIEW
####################################
#macro(prepareView)
  #set ($currentTheme = $xwiki.getXWikiPreference('colorTheme'))
  #if ("$!currentTheme" == '')
    #set ($currentTheme = 'FlamingoThemes.Charcoal')
  #end
  #set ($currentThemeDoc = $xwiki.getDocument($currentTheme))
  #set ($isSubWiki = $services.wiki.currentWikiId != $services.wiki.mainWikiId)
  #set ($flamingoThemesFromThisWiki = [])
  #getFlamingoThemes($services.wiki.currentWikiId, $flamingoThemesFromThisWiki)
  #if ($isSubWiki)
    #set ($flamingoThemesFromMainWiki = [])
    #getFlamingoThemes($services.wiki.mainWikiId,  $flamingoThemesFromMainWiki)
  #end
  #set ($currentScope = 'local')
  #if ("$!currentTheme" != '' && $services.model.resolveDocument($currentTheme).wikiReference.name == $services.wiki.mainWikiId)
    #set ($currentScope = 'global')
  #end
#end
################################
## Get Flamingo themes
################################
#macro(getFlamingoThemes $wiki $return)
  #set ($results = [])
  #set ($xwql = "from doc.object(FlamingoThemesCode.ThemeClass) obj WHERE doc.fullName <> 'FlamingoThemesCode.ThemeTemplate' ORDER BY doc.name")
  #getThemesFromQuery ($xwql, $wiki, $results)
  #set ($return = $NULL)
  #setVariable ("$return", $results)
#end
################################
## Get themes from a query
################################
#macro(getThemesFromQuery $xwql $wiki $return)
  #set ($wikiReference = $services.model.createWikiReference($wiki))
  #set ($themes = $services.query.xwql($xwql).setWiki($wiki).execute())
  #set ($themesRef = [])
  #foreach ($theme in $themes)
    #set ($themeRef = $services.model.resolveDocument($theme, 'default', $wikiReference))
    #if ($services.security.authorization.hasAccess('view', $xcontext.userReference, $themeRef))
      #set ($discard = $themesRef.add($themeRef))
    #end
  #end
  #set ($return = $NULL)
  #setVariable("$return" $themesRef)
#end
####################################
## VIEW
####################################
#macro(view)
  (% class="theme-viewer" %)
  (((
    ## Display a warning about old color themes (if any)
    #if($xwiki.exists($services.model.createDocumentReference('', 'ColorThemes', 'ColorThemeClass')) && $xwiki.exists($services.model.createDocumentReference('', 'ColorThemes', 'WebHome')))
      {{info}}
        $services.localization.render('platform.flamingo.themes.home.warningOldColorThemeInstalled', ["[[", ">>ColorThemes.WebHome]]"])
      {{/info}}
    #end

    ## Display the current theme
    == $services.localization.render('platform.flamingo.themes.home.currenttheme') ==
    #if($currentThemeDoc.getObject('ColorThemes.ColorThemeClass'))
      {{warning}}
        $services.localization.render('platform.flamingo.themes.home.warningCurrentOldColorTheme')
      {{/warning}}
    #end
    #displayTheme($currentThemeDoc.documentReference, $currentScope)

    ## Display the other themes
    ## Creation form
    #creationForm()

    == $services.localization.render('platform.flamingo.themes.home.otherthemes') ==
    #if ($isSubWiki && !$flamingoThemesFromMainWiki.isEmpty())
      {{html}}

$escapetool.xml($services.localization.render('platform.flamingo.themes.local'))

$escapetool.xml($services.localization.render('platform.flamingo.themes.global'))

      {{/html}}

      (% class="tab-content" %)
      (((
        (% class="tab-pane active" id="local" %)
        (((
          #foreach($themeRef in $flamingoThemesFromThisWiki)
            #displayTheme($themeRef, 'local')
          #end
        )))

        (% class="tab-pane" id="global" %)
        (((
          #foreach($themeRef in $flamingoThemesFromMainWiki)
            #displayTheme($themeRef, 'global')
          #end
        )))
      )))
    #else
      #foreach($themeRef in $flamingoThemesFromThisWiki)
        #displayTheme($themeRef, 'local')
      #end
    #end
  )))
#end
####################################
## DISPLAY THEME
####################################
#macro(displayTheme $themeReference $scope)
  #if ($scope == 'local')
    #set ($fullName = $services.model.serialize($themeReference, 'local'))
  #else
    #set ($fullName = $services.model.serialize($themeReference, 'default'))
  #end
  #set ($isCurrentTheme = ($currentThemeDoc.documentReference == $themeReference))
  #set ($themeDoc = $xwiki.getDocument($themeReference))
  #set ($themeObj = $themeDoc.getObject('FlamingoThemesCode.ThemeClass'))
  (% class="theme #if($isCurrentTheme) current-theme#end" %)
  (((
    ## Display the mockup
    #themeMockup($themeObj)
    ## Display the informations
    (% class="theme-info" %)
    (((
      === [[$themeDoc.displayTitle>>$fullName]] #if ($isSubWiki && $scope == 'local') ($services.wiki.currentWikiId)#end===
      #if ($hasAdmin && !$isCurrentTheme)
        $services.icon.render('bullet_go') [[$services.localization.render('platform.flamingo.themes.home.useThisTheme')>>path:$doc.getURL('view', "action=setTheme&theme=${fullName}&form_token=$services.csrf.token")]]
      #end
    )))
  )))
#end
####################################
## THEME MOCKUP
####################################
#macro(themeMockup $themeObj)
  #macro(displayValue $variableName $fallback)
    #set($value = $themeObj.getValue($variableName))
    #if("$!value" == '')
      #set($value = $fallback)
    #end
    $value##
  #end

  {{html}}

      ## A fake navbar

        ## A fake logo

        ## A fake menu

        ## A fake add button

      ## A fake page content

      ## A fake app bar

      ## A fake right panel

      ## A fake footer

  {{/html}}

#end
####################################
## CREATION FORM
####################################
#macro(creationForm)
  #if($xwiki.hasAccessLevel('edit', $xcontext.user, 'FlamingoThemes.AnyPage____________'))
    (% class="clearfix" %)
    (((

    {{html}}

        <form action="$doc.getURL()" method="post" class="form-inline">
          <input type="hidden" name="form_token" value="$services.csrf.token" />
          <input type="hidden" name="action" value="create"/>
          $services.localization.render('platform.flamingo.themes.home.newThemeName')
          <input type="text" name="newThemeName" id="newThemeName" value="$services.localization.render('platform.flamingo.themes.home.newThemeName')" class="withTip" size="30"/>
          <input type="submit" value="$services.localization.render('platform.flamingo.themes.home.create')" class="button"/>
        </form>

    {{/html}}

    )))
  #end
#end
####################################
## CREATE A NEW THEME
####################################
#macro(create)
  #if("$!request.newThemeName" == '')
    {{error}}
      {{translation key="platform.flamingo.themes.home.create.invalid" /}}
    {{/error}}

    #creationForm()
  #elseif(!$services.csrf.isTokenValid($request.form_token))
    {{error}}
      {{translation key="platform.flamingo.themes.home.create.csrf" parameters="$request.newThemeName" /}}
    {{/error}}

    {{html}}
      <form action="$doc.getURL()" method="post">
        <input type="hidden" name="form_token" value="$services.csrf.token" />
        <input type="hidden" name="action" value="create"/>
        <input type="hidden" name="newThemeName" id="newThemeName" value="$request.newThemeName" />
        <input type="submit" value="$services.localization.render('platform.flamingo.themes.home.create.confirm')" class="button"/>
      </form>
    {{/html}}
  #else
    ## Let's do it
    $response.sendRedirect($xwiki.getDocument($services.model.createDocumentReference('', 'FlamingoThemes', $request.newThemeName)).getURL('edit', "template=FlamingoThemesCode.ThemeTemplate&title=$escapetool.url($request.newThemeName)&parent=$doc.fullName&xhidden=1"))
  #end
#end
####################################
## SET THEME
####################################
#macro(setTheme)
  #if("$!request.theme" != '' && $hasAdmin && ${services.csrf.isTokenValid("$!{request.getParameter('form_token')}")})
    #set($preferencesDoc = $xwiki.getDocument('XWiki.XWikiPreferences'))
    #set($preferencesObj = $preferencesDoc.getObject('XWiki.XWikiPreferences'))
    $preferencesObj.set('colorTheme', $request.theme)
    $preferencesDoc.save()
    $response.sendRedirect($doc.getURL('view', "theme=$escapetool.url($request.theme)&action=setThemeSuccess"))
  #end
#end
####################################
## SET THEME SUCCESS
####################################
#macro(setThemeSuccess)
  #if("$!request.theme" != '')

    {{success}}
      $services.localization.render('platform.flamingo.themes.home.set.success', [$xwiki.getDocument($request.theme).displayTitle])
    {{/success}}

  #end
#end
{{/velocity}}
</content>
  <object>
    <name>FlamingoThemesCode.WebHomeSheet</name>
    <number>0</number>
    <className>XWiki.StyleSheetExtension</className>
    <guid>36837eed-1247-4e50-9e0d-0abc7f698eed</guid>
    <class>
      <name>XWiki.StyleSheetExtension</name>
      <customClass/>
      <customMapping/>
      <defaultViewSheet/>
      <defaultEditSheet/>
      <defaultWeb/>
      <nameField/>
      <validationScript/>
      <cache>
        <cache>0</cache>
        <disabled>0</disabled>
        <displayType>select</displayType>
        <multiSelect>0</multiSelect>
        <name>cache</name>
        <number>5</number>
        <prettyName>Caching policy</prettyName>
        <relationalStorage>0</relationalStorage>
        <separator> </separator>
        <separators>|, </separators>
        <size>1</size>
        <unmodifiable>0</unmodifiable>
        <values>long|short|default|forbid</values>
        <classType>com.xpn.xwiki.objects.classes.StaticListClass</classType>
      </cache>

        <disabled>0</disabled>
        <name>code</name>
        <number>2</number>
        <prettyName>Code</prettyName>
        <rows>20</rows>
        <size>50</size>
        <unmodifiable>0</unmodifiable>
        <classType>com.xpn.xwiki.objects.classes.TextAreaClass</classType>

      <contentType>
        <cache>0</cache>
        <disabled>0</disabled>
        <displayType>select</displayType>
        <multiSelect>0</multiSelect>
        <name>contentType</name>
        <number>6</number>
        <prettyName>Content Type</prettyName>
        <relationalStorage>0</relationalStorage>
        <separator> </separator>
        <separators>|, </separators>
        <size>1</size>
        <unmodifiable>0</unmodifiable>
        <values>CSS|LESS</values>
        <classType>com.xpn.xwiki.objects.classes.StaticListClass</classType>
      </contentType>
      <name>
        <disabled>0</disabled>
        <name>name</name>
        <number>1</number>
        <prettyName>Name</prettyName>
        <size>30</size>
        <unmodifiable>0</unmodifiable>
        <classType>com.xpn.xwiki.objects.classes.StringClass</classType>
      </name>
      <parse>
        <disabled>0</disabled>
        <displayFormType>select</displayFormType>
        <displayType>yesno</displayType>
        <name>parse</name>
        <number>4</number>
        <prettyName>Parse content</prettyName>
        <unmodifiable>0</unmodifiable>
        <classType>com.xpn.xwiki.objects.classes.BooleanClass</classType>
      </parse>
      <use>
        <cache>0</cache>
        <disabled>0</disabled>
        <displayType>select</displayType>
        <multiSelect>0</multiSelect>
        <name>use</name>
        <number>3</number>
        <prettyName>Use this extension</prettyName>
        <relationalStorage>0</relationalStorage>
        <separator> </separator>
        <separators>|, </separators>
        <size>1</size>
        <unmodifiable>0</unmodifiable>
        <values>currentPage|onDemand|always</values>
        <classType>com.xpn.xwiki.objects.classes.StaticListClass</classType>
      </use>
    </class>
    <property>
      <cache>long</cache>
    </property>
    <property>
      #template('colorThemeInit.vm')
.theme {
  border: 1px dotted $theme.borderColor;
  float: left;
  margin: 0 1em 1em 0;
  padding: 2px 4px;
  width: 300px;
}

.current-theme {
  background-color: $theme.highlightColor;
}

.theme-info {
  margin-left: 60px;
  color: $theme.textSecondaryColor;
  font-size: .9em;
}

.theme-info h3{
  margin-top: 0;
  border-bottom: 1px solid $theme.borderColor;
}

/* Clear the floatting strategy after the display of all themes */
.theme-viewer h2, .theme-creation-form {
  clear: both;
}

.mockup-page {
  border: 1px solid #aaa;
  float: left;
  height: 47px;
  margin: 0 4px;
  position: relative;
  width: 50px;
}

.mockup-page * {
  line-height: 1px;
  overflow: hidden;
  position: absolute;
}

/* Pretend to be the navbar */
.mockup-navbar {
  left: 0;
  height: 3px;
  top: 0;
  width: 49px;
}

/* Pretend to be a logo */
.mockup-logo {
  background-color: orange;
  top: 1px;
  left: 1px;
  height: 1px;
  width: 6px;
}

/* Pretend to be menu inside the navbar */
.mockup-navbar-menu {
  width: 16px;
  height: 1px;
  border-style: dashed;
  border-width: 1px;
  left: 12px;
}

/* Pretend to be the add button */
.mockup-add-button {
  left: 30px;
  height: 2px;
  width: 5px;
  top: 0px;
}

/* Pretend to be the page content */
.mockup-page-content {
  height: 40px;
  left: 6px;
  overflow: hidden;
  top: 3px;
  width: 32px;
}

.mockup-title, .mockup-text1, .mockup-text2, .mockup-text3, .mockup-text4, .mockup-text5{
  left: 2px;
  height: 1px;
  width: 28px;
  border-style: dotted;
  border-width: 1px;
}

.mockup-title {
  top: 4px;
}

.mockup-text1 {
  top: 10px;
}

.mockup-text2 {
  top: 13px;
}

.mockup-text3 {
  top: 16px;
}

.mockup-text4 {
  top: 19px;
}

.mockup-text5 {
  top: 22px;
}

/* Pretend to be the app bar */
.mockup-left-panel, .mockup-left-panel:before{
  height: 40px;
  top: 3px;
  width: 4px;
  left: 2px;
}

.mockup-left-panel:before{
  content: "@ @ @ @ @";
  font-size: 2px;
}

/* Pretend to be the right panel */
.mockup-right-panel {
  height: 24px;
  top: 7px;
  width: 7px;
  right: 2px;
}

.mockup-right-panel-header-text, .mockup-right-panel-text1, .mockup-right-panel-text2, .mockup-right-panel-text3 {
  height: 1px;
  left: 2px;
  top: 1px;
  width: 8px;
  border-style: dotted;
  border-width: 1px;
}

.mockup-right-panel-header {
  border-bottom: 1px dotted;
  width: 12px;
}

.mockup-right-panel-contents{
  top: 5px;
  width: 8px;
  height: 20px;
}

.mockup-right-panel-text1 {
  top: 0px;
}

.mockup-right-panel-text2 {
  top: 3px;
}

.mockup-right-panel-text3 {
  top: 6px;
}

/* Pretend to be the footer */
.mockup-footer {
  top: 43px;
  height: 3px;
  width: 49px;
  left: 0px;
}

.mockup-footer-content {
  width: 25px;
  height: 1px;
  border-style: dashed;
  border-width: 1px;
  left: 12px;
}

.theme-creation-form form {
  background: url("$xwiki.getSkinFile('icons/silk/add.png')") no-repeat .2em center $theme.backgroundSecondaryColor;
  border: 1px dotted $theme.borderColor;
  display: inline-block;
  padding: .5em .5em .5em 22px;
  margin-bottom: 1em;
}

    </property>
    <property>
      <name>CSS</name>
    </property>
    <property>
      <parse>1</parse>
    </property>
    <property>
      <use>onDemand</use>
    </property>
  </object>
</xwikidoc>

Output:
【漏洞类型】未验证的用户输入导致的XSS漏洞
【严重性】Medium
【漏洞摘要】在原始代码中，用户输入的`newThemeName`和`theme`参数没有经过适当的HTML转义或验证，直接插入到HTML和Velocity模板中。这可能导致跨站脚本攻击（XSS），因为攻击者可以通过输入恶意脚本来在页面上执行任意JavaScript代码。
【关键代码模式】
- `#displayTheme($currentThemeDoc.documentReference, $currentScope)`
- `#displayTheme($themeRef, 'local')`
- `#displayTheme($themeRef, 'global')`
- `<input type="hidden" name="newThemeName" id="newThemeName" value="$request.newThemeName" />`
- `<input type="hidden" name="newThemeName" id="newThemeName" value="$request.newThemeName" />`
- `#themeMockup($themeObj)`
- `#displayValue('body-bg', '#fff')`
- `#displayValue('navbar-default-bg', '#eee')`
- `#displayValue('navbar-default-color', '#000')`
- `#displayValue('btn-success-bg', '#4D9244')`
- `#displayValue('xwiki-page-content-bg', '#fff')`
- `#displayValue('text-color', '#000')`
- `#displayValue('link-color', '#0000ff')`
- `#displayValue('panel-default-text', '#000')`
- `#displayValue('panel-bg', '#fff')`
【修复方法说明】修复方法通过使用`$escapetool.xml()`对用户输入的`newThemeName`参数进行HTML转义，防止恶意脚本注入。
【最佳实践或安全编码技术】在处理用户输入时，应始终进行适当的输入验证和输出编码，以防止XSS和其他注入攻击。推荐使用安全的框架和库提供的转义和验证功能，以确保代码的安全性。