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：
CHANGES.md
### 代码内容：
Release Notes for java-xmlbuilder
=================================

Version 1.1 - 22 July 2014
--------------------------

Added a new `XMLBuilder2` implementation that avoids checked exceptions in the
API and throws runtime exceptions instead. This should make the library much
more pleasant to use, and your code much cleaner, in situations where low-level
exceptions are unlikely -- which is probably most situations where you would
use this library.

For example when creating a new document with the `#create` method, instead of
needing to explicitly catch the unlikely `ParserConfigurationException`, if you
use `XMLBuilder2` this exception automatically gets wrapped in the new
`XMLBuilderRuntimeException` class and can be left to propagate out.

Aside from the removal of checked exceptions, `XMLBuilder2` has the same API as
the original `XMLBuilder` and should therefore be a drop-in replacement in
existing code.

For further discussion and rationale see:
https://github.com/jmurty/java-xmlbuilder/issues/4

Version 1.0 - 6 March 2014
--------------------------

Jumped version number from 0.7 to 1.0 to better reflect this project's age
and stability, as well as to celebrate the move to GitHub.

* Migrated project from
  [Google Code](https://code.google.com/p/java-xmlbuilder/) to
  [GitHub](https://github.com/jmurty/java-xmlbuilder). Whew, that's better!
* Test cases for edge-case issues and questions reported by users.
* Add `parse` methods to parse XML directly from a String or File.
* Allow sub-elements to be added when they will have Text node siblings,
  provided they are whitespace-only text nodes.
* Add `stripWhitespaceOnlyTextNodes` method to strip document of
  whitespace-only text nodes.

Version 0.6 - 28 April 2013
---------------------------

* Add Apache 2.0 LICENSE file to be more explicit about licensing.
* Update iharder Base64 library to 2.3.8 and source via Maven dependency,
  rather than including the source directly.
* New methods 'document' to return builder for root Document node,
  and 'insertInstruction' to insert processing instruction before current node.
* Fail fast if null text value is provided to `text` methods.

Version 0.5 - 17 January 2013
-----------------------------

* Extra CDATA methods to create nodes with strings without any Base64-encoding.
* Serialization of document sub-trees via `toWriter`/`elementAsString` methods.
* Namespace support when building document, and when performing xpath queries
* Perform arbitrary XPath queries using the `xpathQuery` method.
* New `elementBefore()` methods insert a new XML node before the current node.
* Added `text()` method with boolean flag as second parameter to replace a
  node's text value, rather than always appending text.

Version 0.4 - 26 October 2010
-----------------------------

* Fix for ClassCastException that could occur if user attempts to traverse
  beyond the current document's root element using `up()` methods.
* Added method `importXMLBuilder` method to import another XMLBuilder document
  at the current document position.

Version 0.3 - 2 July 2010
-------------------------

* First release to Maven repository.
* Parse existing XML documents with `parse` method.
* Find specific nodes in document with an XPath with `xpathFind`.
* Added JUnit tests

Version 0.2 - 6 January 2009
----------------------------

* Updated CDATA methods (`cdata`, `data`, `d`) to automatically Base64-encode
  text values using Base64 implementation from http://iharder.net/base64

Version 0.1 - 14 December 2008
------------------------------

* Initial public release

## 内容2
### 文件路径：
src/main/java/com/jamesmurty/utils/BaseXMLBuilder.java
### 代码内容：
package com.jamesmurty.utils;

import java.io.IOException;
import java.io.StringWriter;
import java.io.Writer;
import java.util.Map.Entry;
import java.util.Properties;

import javax.xml.namespace.NamespaceContext;
import javax.xml.namespace.QName;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.FactoryConfigurationError;
import javax.xml.parsers.ParserConfigurationException;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerException;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.dom.DOMSource;
import javax.xml.transform.stream.StreamResult;
import javax.xml.xpath.XPath;
import javax.xml.xpath.XPathConstants;
import javax.xml.xpath.XPathExpression;
import javax.xml.xpath.XPathExpressionException;
import javax.xml.xpath.XPathFactory;

import net.iharder.Base64;

import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;

/**
 * Base abstract class for all XML Builder implementations.
 * Most of the work is done here.
 *
 * @author jmurty
 */
public abstract class BaseXMLBuilder {

    /**
     * A DOM Document that stores the underlying XML document operated on by
     * BaseXMLBuilder instances. This document object belongs to the root node
     * of a document, and is shared by this node with all other BaseXMLBuilder
     * instances via the {@link #getDocument()} method.
     * This instance variable must only be created once, by the root node for
     * any given document.
     */
    private Document xmlDocument = null;

    /**
     * The underlying node represented by this builder node.
     */
    private Node xmlNode = null;

    private static boolean isNamespaceAware = true;

    /**
     * Construct a new builder object that wraps the given XML document.
     * This constructor is for internal use only.
     *
     * @param xmlDocument
     * an XML document that the builder will manage and manipulate.
     */
    protected BaseXMLBuilder(Document xmlDocument) {
        this.xmlDocument = xmlDocument;
        this.xmlNode = xmlDocument.getDocumentElement();
    }

    /**
     * Construct a new builder object that wraps the given XML document and node.
     * This constructor is for internal use only.
     *
     * @param myNode
     * the XML node that this builder node will wrap. This node may
     * be part of the XML document, or it may be a new element that is to be
     * added to the document.
     * @param parentNode
     * If not null, the given myElement will be appended as child node of the
     * parentNode node.
     */
    protected BaseXMLBuilder(Node myNode, Node parentNode) {
        this.xmlNode = myNode;
        if (myNode instanceof Document) {
            this.xmlDocument = (Document) myNode;
        } else {
            this.xmlDocument = myNode.getOwnerDocument();
        }
        if (parentNode != null) {
            parentNode.appendChild(myNode);
        }
    }

    /**
     * Construct an XML Document with a default namespace with the given
     * root element.
     *
     * @param name
     * the name of the document's root element.
     * @param namespaceURI
     * default namespace URI for document, ignored if null or empty.
     * @return
     * an XML Document.
     *
     * @throws FactoryConfigurationError
     * @throws ParserConfigurationException
     */
    protected static Document createDocumentImpl(String name, String namespaceURI)
        throws ParserConfigurationException, FactoryConfigurationError
    {
        DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
        factory.setNamespaceAware(isNamespaceAware);
        DocumentBuilder builder = factory.newDocumentBuilder();
        Document document = builder.newDocument();
        Element rootElement = null;
        if (namespaceURI != null && namespaceURI.length() > 0) {
            rootElement = document.createElementNS(namespaceURI, name);
        } else {
            rootElement = document.createElement(name);
        }
        document.appendChild(rootElement);
        return document;
    }

    /**
     * Return an XML Document parsed from the given input source.
     *
     * @param inputSource
     * an XML document input source that will be parsed into a DOM.
     * @return
     * a builder node that can be used to add more nodes to the XML document.
     * @throws ParserConfigurationException
     *
     * @throws FactoryConfigurationError
     * @throws ParserConfigurationException
     * @throws IOException
     * @throws SAXException
     */
    protected static Document parseDocumentImpl(InputSource inputSource)
        throws ParserConfigurationException, SAXException, IOException
    {
        DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
        factory.setNamespaceAware(isNamespaceAware);
        DocumentBuilder builder = factory.newDocumentBuilder();
        Document document = builder.parse(inputSource);
        return document;
    }

    /**
     * Find and delete from the underlying Document any text nodes that
     * contain nothing but whitespace, such as newlines and tab or space
     * characters used to indent or pretty-print an XML document.
     *
     * Uses approach I documented on StackOverflow:
     * http://stackoverflow.com/a/979606/4970
     *
     * @throws XPathExpressionException
     */
    protected void stripWhitespaceOnlyTextNodesImpl()
        throws XPathExpressionException
    {
        XPathFactory xpathFactory = XPathFactory.newInstance();
        // XPath to find empty text nodes.
        XPathExpression xpathExp = xpathFactory.newXPath().compile(
            "//text()[normalize-space(.) = '']");
        NodeList emptyTextNodes = (NodeList) xpathExp.evaluate(
            this.getDocument(), XPathConstants.NODESET);

        // Remove each empty text node from document.
        for (int i = 0; i < emptyTextNodes.getLength(); i++) {
            Node emptyTextNode = emptyTextNodes.item(i);
            emptyTextNode.getParentNode().removeChild(emptyTextNode);
        }
    }

    /**
     * Find and delete from the underlying Document any text nodes that
     * contain nothing but whitespace, such as newlines and tab or space
     * characters used to indent or pretty-print an XML document.
     *
     * Uses approach I documented on StackOverflow:
     * http://stackoverflow.com/a/979606/4970
     *
     * @return
     * a builder node at the same location as before the operation.
     * @throws XPathExpressionException
     */
    public abstract BaseXMLBuilder stripWhitespaceOnlyTextNodes()
        throws XPathExpressionException;

    /**
     * Imports another BaseXMLBuilder document into this document at the
     * current position. The entire document provided is imported.
     *
     * @param builder
     * the BaseXMLBuilder document to be imported.
     */
    protected void importXMLBuilderImpl(BaseXMLBuilder builder) {
        assertElementContainsNoOrWhitespaceOnlyTextNodes(this.xmlNode);
        Node importedNode = getDocument().importNode(
            builder.getDocument().getDocumentElement(), true);
        this.xmlNode.appendChild(importedNode);
    }

    /**
     * @return
     * true if the XML Document and Element objects wrapped by this
     * builder are equal to the other's wrapped objects.
     */
    @Override
    public boolean equals(Object obj) {
    	if (obj != null && obj instanceof BaseXMLBuilder) {
    	    BaseXMLBuilder other = (BaseXMLBuilder) obj;
    		return
    			this.xmlDocument.equals(other.getDocument())
    			&& this.xmlNode.equals(other.getElement());
    	}
    	return false;
    }

    /**
     * @return
     * the XML element wrapped by this builder node, or null if the builder node wraps the
     * root Document node.
     */
    public Element getElement() {
        if (this.xmlNode instanceof Element) {
            return (Element) this.xmlNode;
        } else {
            return null;
        }
    }

    /**
     * @return
     * the XML document constructed by all builder nodes.
     */
    public Document getDocument() {
    	return this.xmlDocument;
    }

    /**
     * Imports another XMLBuilder document into this document at the
     * current position. The entire document provided is imported.
     *
     * @param builder
     * the XMLBuilder document to be imported.
     *
     * @return
     * a builder node at the same location as before the import, but
     * now containing the entire document tree provided.
     */
    public abstract BaseXMLBuilder importXMLBuilder(BaseXMLBuilder builder);

    /**
     * @return
     * the builder node representing the root element of the XML document.
     */
    public abstract BaseXMLBuilder root();

    /**
     * Return the result of evaluating an XPath query on the builder's DOM
     * using the given namespace. Returns null if the query finds nothing,
     * or finds a node that does not match the type specified by returnType.
     *
     * @param xpath
     * an XPath expression
     * @param type
     * the type the XPath is expected to resolve to, e.g:
     * {@link XPathConstants#NODE}, {@link XPathConstants#NODESET},
     * {@link XPathConstants#STRING}.
     * @param nsContext
     * a mapping of prefixes to namespace URIs that allows the XPath expression
     * to use namespaces, or null for a non-namespaced document.
     *
     * @return
     * a builder node representing the first Element that matches the
     * XPath expression.
     *
     * @throws XPathExpressionException
     * If the XPath is invalid, or if does not resolve to at least one
     * {@link Node#ELEMENT_NODE}.
     */
    public Object xpathQuery(String xpath, QName type, NamespaceContext nsContext)
        throws XPathExpressionException {
            XPathFactory xpathFactory = XPathFactory.newInstance();
            XPath xPath = xpathFactory.newXPath();
            if (nsContext != null) {
                xPath.setNamespaceContext(nsContext);
            }
            XPathExpression xpathExp = xPath.compile(xpath);
            try {
                return xpathExp.evaluate(this.xmlNode, type);
            } catch (IllegalArgumentException e) {
                // Thrown if item found does not match expected type
                return null;
            }
        }

    /**
     * Return the result of evaluating an XPath query on the builder's DOM.
     * Returns null if the query finds nothing,
     * or finds a node that does not match the type specified by returnType.
     *
     * @param xpath
     * an XPath expression
     * @param type
     * the type the XPath is expected to resolve to, e.g:
     * {@link XPathConstants#NODE}, {@link XPathConstants#NODESET},
     * {@link XPathConstants#STRING}
     *
     * @return
     * a builder node representing the first Element that matches the
     * XPath expression.
     *
     * @throws XPathExpressionException
     * If the XPath is invalid, or if does not resolve to at least one
     * {@link Node#ELEMENT_NODE}.
     */
    public Object xpathQuery(String xpath, QName type)
        throws XPathExpressionException {
            return xpathQuery(xpath, type, null);
        }

    /**
     * Find the first element in the builder's DOM matching the given
     * XPath expression, where the expression may include namespaces if
     * a {@link NamespaceContext} is provided.
     *
     * @param xpath
     * An XPath expression that *must* resolve to an existing Element within
     * the document object model.
     * @param nsContext
     * a mapping of prefixes to namespace URIs that allows the XPath expression
     * to use namespaces.
     *
     * @return
     * a builder node representing the first Element that matches the
     * XPath expression.
     *
     * @throws XPathExpressionException
     * If the XPath is invalid, or if does not resolve to at least one
     * {@link Node#ELEMENT_NODE}.
     */
    public abstract BaseXMLBuilder xpathFind(String xpath, NamespaceContext nsContext)
        throws XPathExpressionException;

    /**
     * Find the first element in the builder's DOM matching the given
     * XPath expression.
     *
     * @param xpath
     * An XPath expression that *must* resolve to an existing Element within
     * the document object model.
     *
     * @return
     * a builder node representing the first Element that matches the
     * XPath expression.
     *
     * @throws XPathExpressionException
     * If the XPath is invalid, or if does not resolve to at least one
     * {@link Node#ELEMENT_NODE}.
     */
    public abstract BaseXMLBuilder xpathFind(String xpath)
        throws XPathExpressionException;

    /**
     * Find the first element in the builder's DOM matching the given
     * XPath expression, where the expression may include namespaces if
     * a {@link NamespaceContext} is provided.
     *
     * @param xpath
     * An XPath expression that *must* resolve to an existing Element within
     * the document object model.
     * @param nsContext
     * a mapping of prefixes to namespace URIs that allows the XPath expression
     * to use namespaces.
     *
     * @return
     * the first Element that matches the XPath expression.
     *
     * @throws XPathExpressionException
     * If the XPath is invalid, or if does not resolve to at least one
     * {@link Node#ELEMENT_NODE}.
     */
    protected Node xpathFindImpl(String xpath, NamespaceContext nsContext)
        throws XPathExpressionException
    {
    	Node foundNode = (Node) this.xpathQuery(xpath, XPathConstants.NODE, nsContext);
    	if (foundNode == null || foundNode.getNodeType() != Node.ELEMENT_NODE) {
    		throw new XPathExpressionException("XPath expression \""
    			+ xpath + "\" does not resolve to an Element in context "
    			+ this.xmlNode + ": " + foundNode);
    	}
    	return foundNode;
    }

    /**
     * Look up the namespace matching the current builder node's qualified
     * name prefix (if any) or the document's default namespace.
     *
     * @param name
     * the name of the XML element.
     *
     * @return
     * The namespace URI, or null if none applies.
     */
    protected String lookupNamespaceURIImpl(String name) {
        String prefix = getPrefixFromQualifiedName(name);
        String namespaceURI = this.xmlNode.lookupNamespaceURI(prefix);
        return namespaceURI;
    }

    /**
     * Add a named and namespaced XML element to the document as a child of
     * this builder's node.
     *
     * @param name
     * the name of the XML element.
     * @param namespaceURI
     * a namespace URI
     * @return
     *
     * @throws IllegalStateException
     * if you attempt to add a child element to an XML node that already
     * contains a text node value.
     */
    protected Element elementImpl(String name, String namespaceURI) {
        assertElementContainsNoOrWhitespaceOnlyTextNodes(this.xmlNode);
        if (namespaceURI == null) {
            return getDocument().createElement(name);
        } else {
            return getDocument().createElementNS(namespaceURI, name);
        }
    }

    /**
     * Add a named XML element to the document as a child of this builder node,
     * and return the builder node representing the new child.
     *
     * When adding an element to a namespaced document, the new node will be
     * assigned a namespace matching it's qualified name prefix (if any) or
     * the document's default namespace. NOTE: If the element has a prefix that
     * does not match any known namespaces, the element will be created
     * without any namespace.
     *
     * @param name
     * the name of the XML element.
     *
     * @return
     * a builder node representing the new child.
     *
     * @throws IllegalStateException
     * if you attempt to add a child element to an XML node that already
     * contains a text node value.
     */
    public abstract BaseXMLBuilder element(String name);

    /**
     * Synonym for {@link #element(String)}.
     *
     * @param name
     * the name of the XML element.
     *
     * @return
     * a builder node representing the new child.
     *
     * @throws IllegalStateException
     * if you attempt to add a child element to an XML node that already
     * contains a text node value.
     */
    public abstract BaseXMLBuilder elem(String name);

    /**
     * Synonym for {@link #element(String)}.
     *
     * @param name
     * the name of the XML element.
     *
     * @return
     * a builder node representing the new child.
     *
     * @throws IllegalStateException
     * if you attempt to add a child element to an XML node that already
     * contains a text node value.
     */
    public abstract BaseXMLBuilder e(String name);

    /**
     * Add a named and namespaced XML element to the document as a child of
     * this builder node, and return the builder node representing the new child.
     *
     * @param name
     * the name of the XML element.
     * @param namespaceURI
     * a namespace URI
     *
     * @return
     * a builder node representing the new child.
     *
     * @throws IllegalStateException
     * if you attempt to add a child element to an XML node that already
     * contains a text node value.
     */
    public abstract BaseXMLBuilder element(String name, String namespaceURI);

    /**
     * Add a named XML element to the document as a sibling element
     * that precedes the position of this builder node, and return the builder node
     * representing the new child.
     *
     * When adding an element to a namespaced document, the new node will be
     * assigned a namespace matching it's qualified name prefix (if any) or
     * the document's default namespace. NOTE: If the element has a prefix that
     * does not match any known namespaces, the element will be created
     * without any namespace.
     *
     * @param name
     * the name of the XML element.
     *
     * @return
     * a builder node representing the new child.
     *
     * @throws IllegalStateException
     * if you attempt to add a sibling element to a node where there are already
     * one or more siblings that are text nodes.
     */
    public abstract BaseXMLBuilder elementBefore(String name);

    /**
     * Add a named and namespaced XML element to the document as a sibling element
     * that precedes the position of this builder node, and return the builder node
     * representing the new child.
     *
     * @param name
     * the name of the XML element.
     * @param namespaceURI
     * a namespace URI
     *
     * @return
     * a builder node representing the new child.
     *
     * @throws IllegalStateException
     * if you attempt to add a sibling element to a node where there are already
     * one or more siblings that are text nodes.
     */
    public abstract BaseXMLBuilder elementBefore(String name, String namespaceURI);

    /**
     * Add a named attribute value to the element represented by this builder
     * node, and return the node representing the element to which the
     * attribute was added (<strong>not</strong> the new attribute node).
     *
     * @param name
     * the attribute's name.
     * @param value
     * the attribute's value.
     *
     * @return
     * the builder node representing the element to which the attribute was
     * added.
     */
    public abstract BaseXMLBuilder attribute(String name, String value);

    /**
     * Synonym for {@link #attribute(String, String)}.
     *
     * @param name
     * the attribute's name.
     * @param value
     * the attribute's value.
     *
     * @return
     * the builder node representing the element to which the attribute was
     * added.
     */
    public abstract BaseXMLBuilder attr(String name, String value);

    /**
     * Synonym for {@link #attribute(String, String)}.
     *
     * @param name
     * the attribute's name.
     * @param value
     * the attribute's value.
     *
     * @return
     * the builder node representing the element to which the attribute was
     * added.
     */
    public abstract BaseXMLBuilder a(String name, String value);

    /**
     * Add or replace the text value of an element represented by this builder
     * node, and return the node representing the element to which the text
     * was added (<strong>not</strong> the new text node).
     *
     * @param value
     * the text value to set or add to the element.
     * @param replaceText
     * if True any existing text content of the node is replaced with the
     * given text value, if the given value is appended to any existing text.
     *
     * @return
     * the builder node representing the element to which the text was added.
     */
    public abstract BaseXMLBuilder text(String value, boolean replaceText);

    /**
     * Add a text value to the element represented by this builder node, and
     * return the node representing the element to which the text
     * was added (<strong>not</strong> the new text node).
     *
     * @param value
     * the text value to add to the element.
     *
     * @return
     * the builder node representing the element to which the text was added.
     */
    public abstract BaseXMLBuilder text(String value);

    /**
     * Synonym for {@link #text(String)}.
     *
     * @param value
     * the text value to add to the element.
     *
     * @return
     * the builder node representing the element to which the text was added.
     */
    public abstract BaseXMLBuilder t(String value);

    /**
     * Add a named XML element to the document as a sibling element
     * that precedes the position of this builder node.
     *
     * When adding an element to a namespaced document, the new node will be
     * assigned a namespace matching it's qualified name prefix (if any) or
     * the document's default namespace. NOTE: If the element has a prefix that
     * does not match any known namespaces, the element will be created
     * without any namespace.
     *
     * @param name
     * the name of the XML element.
     *
     * @throws IllegalStateException
     * if you attempt to add a sibling element to a node where there are already
     * one or more siblings that are text nodes.
     */
    protected Element elementBeforeImpl(String name) {
        String prefix = getPrefixFromQualifiedName(name);
        String namespaceURI = this.xmlNode.lookupNamespaceURI(prefix);
        return elementBeforeImpl(name, namespaceURI);
    }

    /**
     * Add a named and namespaced XML element to the document as a sibling element
     * that precedes the position of this builder node.
     *
     * @param name
     * the name of the XML element.
     * @param namespaceURI
     * a namespace URI
     *
     * @throws IllegalStateException
     * if you attempt to add a sibling element to a node where there are already
     * one or more siblings that are text nodes.
     */
    protected Element elementBeforeImpl(String name, String namespaceURI) {
        Node parentNode = this.xmlNode.getParentNode();
        assertElementContainsNoOrWhitespaceOnlyTextNodes(parentNode);

        Element newElement = (namespaceURI == null
            ? getDocument().createElement(name)
            : getDocument().createElementNS(namespaceURI, name));

        // Insert new element before the current element
        parentNode.insertBefore(newElement, this.xmlNode);
        // Return a new builder node pointing at the new element
        return newElement;
    }

    /**
     * Add a named attribute value to the element for this builder node.
     *
     * @param name
     * the attribute's name.
     * @param value
     * the attribute's value.
     */
    protected void attributeImpl(String name, String value) {
        if (! (this.xmlNode instanceof Element)) {
            throw new RuntimeException(
                "Cannot add an attribute to non-Element underlying node: "
                + this.xmlNode);
        }
        ((Element) xmlNode).setAttribute(name, value);
    }

    /**
     * Add or replace the text value of an element for this builder node.
     *
     * @param value
     * the text value to set or add to the element.
     * @param replaceText
     * if True any existing text content of the node is replaced with the
     * given text value, if the given value is appended to any existing text.
     */
    protected void textImpl(String value, boolean replaceText) {
        // Issue 10: null text values cause exceptions on subsequent call to
        // Transformer to render document, so we fail-fast here on bad data.
        if (value == null) {
            throw new IllegalArgumentException("Illegal null text value");
        }

        if (replaceText) {
            xmlNode.setTextContent(value);
        } else {
            xmlNode.appendChild(getDocument().createTextNode(value));
        }
    }

    /**
     * Add a CDATA node with String content to the element for this builder node.
     *
     * @param data
     * the String value that will be added to a CDATA element.
     */
    protected void cdataImpl(String data) {
        xmlNode.appendChild(
            getDocument().createCDATASection(data));
    }

    /**
     * Add a CDATA node with Base64-encoded byte data content to the element
     * for this builder node.
     *
     * @param data
     * the data value that will be Base64-encoded and added to a CDATA element.
     */
    protected void cdataImpl(byte[] data) {
        xmlNode.appendChild(
            getDocument().createCDATASection(
                Base64.encodeBytes(data)));
    }

    /**
     * Add a comment to the element represented by this builder node.
     *
     * @param comment
     * the comment to add to the element.
     */
    protected void commentImpl(String comment) {
        xmlNode.appendChild(getDocument().createComment(comment));
    }

    /**
     * Add an instruction to the element represented by this builder node.
     *
     * @param target
     * the target value for the instruction.
     * @param data
     * the data value for the instruction
     */
    protected void instructionImpl(String target, String data) {
        xmlNode.appendChild(getDocument().createProcessingInstruction(target, data));
    }

    /**
     * Insert an instruction before the element represented by this builder node.
     *
     * @param target
     * the target value for the instruction.
     * @param data
     * the data value for the instruction
     */
    protected void insertInstructionImpl(String target, String data) {
        getDocument().insertBefore(
            getDocument().createProcessingInstruction(target, data),
            xmlNode);
    }

    /**
     * Add a reference to the element represented by this builder node.
     *
     * @param name
     * the name value for the reference.
     */
    protected void referenceImpl(String name) {
        xmlNode.appendChild(getDocument().createEntityReference(name));
    }

    /**
     * Add an XML namespace attribute to this builder's element node.
     *
     * @param prefix
     * a prefix for the namespace URI within the document, may be null
     * or empty in which case a default "xmlns" attribute is created.
     * @param namespaceURI
     * a namespace uri
     */
    protected void namespaceImpl(String prefix, String namespaceURI) {
        if (! (this.xmlNode instanceof Element)) {
            throw new RuntimeException(
                "Cannot add an attribute to non-Element underlying node: "
                + this.xmlNode);
        }
        if (prefix != null && prefix.length() > 0) {
            ((Element) xmlNode).setAttributeNS("http://www.w3.org/2000/xmlns/",
                "xmlns:" + prefix, namespaceURI);
        } else {
            ((Element) xmlNode).setAttributeNS("http://www.w3.org/2000/xmlns/",
                "xmlns", namespaceURI);
        }
    }

    /**
     * Add an XML namespace attribute to this builder's element node
     * without a prefix.
     *
     * @param namespaceURI
     * a namespace uri
     */
    protected void namespaceImpl(String namespaceURI) {
        namespaceImpl(null, namespaceURI);
    }

    /**
     * Add a CDATA node with String content to the element represented by this
     * builder node, and return the node representing the element to which the
     * data was added (<strong>not</strong> the new CDATA node).
     *
     * @param data
     * the String value that will be added to a CDATA element.
     *
     * @return
     * the builder node representing the element to which the data was added.
     */
    public abstract BaseXMLBuilder cdata(String data);

    /**
     * Synonym for {@link #cdata(String)}.
     *
     * @param data
     * the String value that will be added to a CDATA element.
     *
     * @return
     * the builder node representing the element to which the data was added.
     */
    public abstract BaseXMLBuilder data(String data);

    /**
     * Synonym for {@link #cdata(String)}.
     *
     * @param data
     * the String value that will be added to a CDATA element.
     *
     * @return
     * the builder node representing the element to which the data was added.
     */
    public abstract BaseXMLBuilder d(String data);

    /**
     * Add a CDATA node with Base64-encoded byte data content to the element represented
     * by this builder node, and return the node representing the element to which the
     * data was added (<strong>not</strong> the new CDATA node).
     *
     * @param data
     * the data value that will be Base64-encoded and added to a CDATA element.
     *
     * @return
     * the builder node representing the element to which the data was added.
     */
    public abstract BaseXMLBuilder cdata(byte[] data);

    /**
     * Synonym for {@link #cdata(byte[])}.
     *
     * @param data
     * the data value that will be Base64-encoded and added to a CDATA element.
     *
     * @return
     * the builder node representing the element to which the data was added.
     */
    public abstract BaseXMLBuilder data(byte[] data);

    /**
     * Synonym for {@link #cdata(byte[])}.
     *
     * @param data
     * the data value that will be Base64-encoded and added to a CDATA element.
     *
     * @return
     * the builder node representing the element to which the data was added.
     */
    public abstract BaseXMLBuilder d(byte[] data);

    /**
     * Add a comment to the element represented by this builder node, and
     * return the node representing the element to which the comment
     * was added (<strong>not</strong> the new comment node).
     *
     * @param comment
     * the comment to add to the element.
     *
     * @return
     * the builder node representing the element to which the comment was added.
     */
    public abstract BaseXMLBuilder comment(String comment);

    /**
     * Synonym for {@link #comment(String)}.
     *
     * @param comment
     * the comment to add to the element.
     *
     * @return
     * the builder node representing the element to which the comment was added.
     */
    public abstract BaseXMLBuilder cmnt(String comment);

    /**
     * Synonym for {@link #comment(String)}.
     *
     * @param comment
     * the comment to add to the element.
     *
     * @return
     * the builder node representing the element to which the comment was added.
     */
    public abstract BaseXMLBuilder c(String comment);

    /**
     * Add an instruction to the element represented by this builder node, and
     * return the node representing the element to which the instruction
     * was added (<strong>not</strong> the new instruction node).
     *
     * @param target
     * the target value for the instruction.
     * @param data
     * the data value for the instruction
     *
     * @return
     * the builder node representing the element to which the instruction was
     * added.
     */
    public abstract BaseXMLBuilder instruction(String target, String data);

    /**
     * Synonym for {@link #instruction(String, String)}.
     *
     * @param target
     * the target value for the instruction.
     * @param data
     * the data value for the instruction
     *
     * @return
     * the builder node representing the element to which the instruction was
     * added.
     */
    public abstract BaseXMLBuilder inst(String target, String data);

    /**
     * Synonym for {@link #instruction(String, String)}.
     *
     * @param target
     * the target value for the instruction.
     * @param data
     * the data value for the instruction
     *
     * @return
     * the builder node representing the element to which the instruction was
     * added.
     */
    public abstract BaseXMLBuilder i(String target, String data);

    /**
     * Insert an instruction before the element represented by this builder node,
     * and return the node representing that same element
     * (<strong>not</strong> the new instruction node).
     *
     * @param target
     * the target value for the instruction.
     * @param data
     * the data value for the instruction
     *
     * @return
     * the builder node representing the element before which the instruction was inserted.
     */
    public abstract BaseXMLBuilder insertInstruction(String target, String data);

    /**
     * Add a reference to the element represented by this builder node, and
     * return the node representing the element to which the reference
     * was added (<strong>not</strong> the new reference node).
     *
     * @param name
     * the name value for the reference.
     *
     * @return
     * the builder node representing the element to which the reference was
     * added.
     */
    public abstract BaseXMLBuilder reference(String name);

    /**
     * Synonym for {@link #reference(String)}.
     *
     * @param name
     * the name value for the reference.
     *
     * @return
     * the builder node representing the element to which the reference was
     * added.
     */
    public abstract BaseXMLBuilder ref(String name);

    /**
     * Synonym for {@link #reference(String)}.
     *
     * @param name
     * the name value for the reference.
     *
     * @return
     * the builder node representing the element to which the reference was
     * added.
     */
    public abstract BaseXMLBuilder r(String name);

    /**
     * Add an XML namespace attribute to this builder's element node.
     *
     * @param prefix
     * a prefix for the namespace URI within the document, may be null
     * or empty in which case a default "xmlns" attribute is created.
     * @param namespaceURI
     * a namespace uri
     *
     * @return
     * the builder node representing the element to which the attribute was added.
     */
    public abstract BaseXMLBuilder namespace(String prefix, String namespaceURI);

    /**
     * Synonym for {@link #namespace(String, String)}.
     *
     * @param prefix
     * a prefix for the namespace URI within the document, may be null
     * or empty in which case a default xmlns attribute is created.
     * @param namespaceURI
     * a namespace uri
     *
     * @return
     * the builder node representing the element to which the attribute was added.
     */
    public abstract BaseXMLBuilder ns(String prefix, String namespaceURI);

    /**
     * Add an XML namespace attribute to this builder's element node
     * without a prefix.
     *
     * @param namespaceURI
     * a namespace uri
     *
     * @return
     * the builder node representing the element to which the attribute was added.
     */
    public abstract BaseXMLBuilder namespace(String namespaceURI);

    /**
     * Synonym for {@link #namespace(String)}.
     *
     * @param namespaceURI
     * a namespace uri
     *
     * @return
     * the builder node representing the element to which the attribute was added.
     */
    public abstract BaseXMLBuilder ns(String namespaceURI);

    /**
     * Return the builder node representing the n<em>th</em> ancestor element
     * of this node, or the root node if n exceeds the document's depth.
     *
     * @param steps
     * the number of parent elements to step over while navigating up the chain
     * of node ancestors. A steps value of 1 will find a node's parent, 2 will
     * find its grandparent etc.
     *
     * @return
     * the n<em>th</em> ancestor of this node, or the root node if this is
     * reached before the n<em>th</em> parent is found.
     */
    public abstract BaseXMLBuilder up(int steps);

    /**
     * Return the builder node representing the parent of the current node.
     *
     * @return
     * the parent of this node, or the root node if this method is called on the
     * root node.
     */
    public abstract BaseXMLBuilder up();

    /**
     * BEWARE: The builder returned by this method represents a Document node, not
     * an Element node as is usually the case, so attempts to use the attribute or
     * namespace methods on this builder will likely fail.
     *
     * @return
     * the builder node representing the root XML document.
     */
    public abstract BaseXMLBuilder document();

    /**
     * Return the Document node representing the n<em>th</em> ancestor element
     * of this node, or the root node if n exceeds the document's depth.
     *
     * @param steps
     * the number of parent elements to step over while navigating up the chain
     * of node ancestors. A steps value of 1 will find a node's parent, 2 will
     * find its grandparent etc.
     *
     * @return
     * the n<em>th</em> ancestor of this node, or the root node if this is
     * reached before the n<em>th</em> parent is found.
     */
    protected Node upImpl(int steps) {
    	Node currNode = this.xmlNode;
        int stepCount = 0;
        while (currNode.getParentNode() != null && stepCount < steps) {
        	currNode = currNode.getParentNode();
            stepCount++;
        }
        return currNode;
    }

    /**
     * @throws IllegalStateException
     * if the current element contains any child text nodes that aren't pure whitespace.
     * We allow whitespace so parsed XML documents containing indenting or pretty-printing
     * can still be amended, per issue #17.
     */
    protected void assertElementContainsNoOrWhitespaceOnlyTextNodes(Node anXmlElement)
    {
        Node textNodeWithNonWhitespace = null;
        NodeList childNodes = anXmlElement.getChildNodes();
        for (int i = 0; i < childNodes.getLength(); i++) {
            if (Element.TEXT_NODE == childNodes.item(i).getNodeType()) {
                Node textNode = childNodes.item(i);
                String textWithoutWhitespace =
                    textNode.getTextContent().replaceAll("\\s", "");
                if (textWithoutWhitespace.length() > 0) {
                    textNodeWithNonWhitespace = textNode;
                    break;
                }
            }
        }
        if (textNodeWithNonWhitespace != null) {
            throw new IllegalStateException(
                "Cannot add sub-element to element <" + anXmlElement.getNodeName()
                + "> that contains a Text node that isn't purely whitespace: "
                + textNodeWithNonWhitespace);
        }
    }

    /**
     * Serialize either the specific Element wrapped by this BaseXMLBuilder,
     * or its entire XML document, to the given writer using the default
     * {@link TransformerFactory} and {@link Transformer} classes.
     * If output options are provided, these options are provided to the
     * {@link Transformer} serializer.
     *
     * @param wholeDocument
     * if true the whole XML document (i.e. the document root) is serialized,
     * if false just the current Element and its descendants are serialized.
     * @param writer
     * a writer to which the serialized document is written.
     * @param outputProperties
     * settings for the {@link Transformer} serializer. This parameter may be
     * null or an empty Properties object, in which case the default output
     * properties will be applied.
     *
     * @throws TransformerException
     */
    public void toWriter(boolean wholeDocument, Writer writer, Properties outputProperties)
        throws TransformerException {
            StreamResult streamResult = new StreamResult(writer);

            DOMSource domSource = null;
            if (wholeDocument) {
                domSource = new DOMSource(getDocument());
            } else {
                domSource = new DOMSource(getElement());
            }

            TransformerFactory tf = TransformerFactory.newInstance();
            Transformer serializer = tf.newTransformer();

            if (outputProperties != null) {
                for (Entry<Object, Object> entry: outputProperties.entrySet()) {
                    serializer.setOutputProperty(
                        (String) entry.getKey(),
                        (String) entry.getValue());
                }
            }
            serializer.transform(domSource, streamResult);
        }

    /**
     * Serialize the XML document to the given writer using the default
     * {@link TransformerFactory} and {@link Transformer} classes. If output
     * options are provided, these options are provided to the
     * {@link Transformer} serializer.
     *
     * @param writer
     * a writer to which the serialized document is written.
     * @param outputProperties
     * settings for the {@link Transformer} serializer. This parameter may be
     * null or an empty Properties object, in which case the default output
     * properties will be applied.
     *
     * @throws TransformerException
     */
    public void toWriter(Writer writer, Properties outputProperties)
        throws TransformerException {
            this.toWriter(true, writer, outputProperties);
        }

    /**
     * Serialize the XML document to a string by delegating to the
     * {@link #toWriter(Writer, Properties)} method. If output options are
     * provided, these options are provided to the {@link Transformer}
     * serializer.
     *
     * @param outputProperties
     * settings for the {@link Transformer} serializer. This parameter may be
     * null or an empty Properties object, in which case the default output
     * properties will be applied.
     *
     * @return
     * the XML document as a string
     *
     * @throws TransformerException
     */
    public String asString(Properties outputProperties) throws TransformerException {
        StringWriter writer = new StringWriter();
        toWriter(writer, outputProperties);
        return writer.toString();
    }

    /**
     * Serialize the current XML Element and its descendants to a string by
     * delegating to the {@link #toWriter(Writer, Properties)} method.
     * If output options are provided, these options are provided to the
     * {@link Transformer} serializer.
     *
     * @param outputProperties
     * settings for the {@link Transformer} serializer. This parameter may be
     * null or an empty Properties object, in which case the default output
     * properties will be applied.
     *
     * @return
     * the XML document as a string
     *
     * @throws TransformerException
     */
    public String elementAsString(Properties outputProperties) throws TransformerException {
        StringWriter writer = new StringWriter();
        toWriter(false, writer, outputProperties);
        return writer.toString();
    }

    /**
     * Serialize the XML document to a string excluding the XML declaration.
     *
     * @return
     * the XML document as a string without the XML declaration at the
     * beginning of the output.
     *
     * @throws TransformerException
     */
    public String asString() throws TransformerException {
        Properties outputProperties = new Properties();
        outputProperties.put(javax.xml.transform.OutputKeys.OMIT_XML_DECLARATION, "yes");
        return asString(outputProperties);
    }

    /**
     * Serialize the current XML Element and its descendants to a string
     * excluding the XML declaration.
     *
     * @return
     * the XML document as a string without the XML declaration at the
     * beginning of the output.
     *
     * @throws TransformerException
     */
    public String elementAsString() throws TransformerException {
        Properties outputProperties = new Properties();
        outputProperties.put(javax.xml.transform.OutputKeys.OMIT_XML_DECLARATION, "yes");
        return elementAsString(outputProperties);
    }

    /**
     * @return
     * a namespace context containing the prefixes and namespace URI's used
     * within this builder's document, to assist in running namespace-aware
     * XPath queries against the document.
     */
    protected NamespaceContextImpl buildDocumentNamespaceContext() {
        return new NamespaceContextImpl(xmlDocument.getDocumentElement());
    }

    protected String getPrefixFromQualifiedName(String qualifiedName) {
        int colonPos = qualifiedName.indexOf(':');
        if (colonPos > 0) {
            return qualifiedName.substring(0, colonPos);
        } else {
            return null;
        }
    }

}
## 内容3
### 文件路径：
src/main/java/com/jamesmurty/utils/XMLBuilder.java
### 代码内容：
package com.jamesmurty.utils;

import java.io.File;
import java.io.FileReader;
import java.io.IOException;
import java.io.StringReader;

import javax.xml.namespace.NamespaceContext;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.FactoryConfigurationError;
import javax.xml.parsers.ParserConfigurationException;
import javax.xml.xpath.XPathExpressionException;

import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;

/**
 * XML Builder is a utility that creates simple XML documents using relatively
 * sparse Java code. It is intended to allow for quick and painless creation of
 * XML documents where you might otherwise be tempted to use concatenated
 * strings, rather than face the tedium and verbosity of coding with
 * JAXP (http://jaxp.dev.java.net/).
 * <p>
 * Internally, XML Builder uses JAXP to build a standard W3C
 * {@link org.w3c.dom.Document} model (DOM) that you can easily export as a
 * string, or access and manipulate further if you have special requirements.
 * </p>
 * <p>
 * The XMLBuilder class serves as a wrapper of {@link org.w3c.dom.Element} nodes,
 * and provides a number of utility methods that make it simple to
 * manipulate the underlying element and the document to which it belongs.
 * In essence, this class performs dual roles: it represents a specific XML
 * node, and also allows manipulation of the entire underlying XML document.
 * The platform's default {@link DocumentBuilderFactory} and
 * {@link DocumentBuilder} classes are used to build the document.
 * </p>
 *
 * @author James Murty
 */
public final class XMLBuilder extends BaseXMLBuilder {

    /**
     * Construct a new builder object that wraps the given XML document.
     * This constructor is for internal use only.
     *
     * @param xmlDocument
     * an XML document that the builder will manage and manipulate.
     */
    protected XMLBuilder(Document xmlDocument) {
        super(xmlDocument);
    }

    /**
     * Construct a new builder object that wraps the given XML document and node.
     * This constructor is for internal use only.
     *
     * @param myNode
     * the XML node that this builder node will wrap. This node may
     * be part of the XML document, or it may be a new element that is to be
     * added to the document.
     * @param parentNode
     * If not null, the given myElement will be appended as child node of the
     * parentNode node.
     */
    protected XMLBuilder(Node myNode, Node parentNode) {
        super(myNode, parentNode);
    }

    /**
     * Construct a builder for new XML document with a default namespace.
     * The document will be created with the given root element, and the builder
     * returned by this method will serve as the starting-point for any further
     * document additions.
     *
     * @param name
     * the name of the document's root element.
     * @param namespaceURI
     * default namespace URI for document, ignored if null or empty.
     * @return
     * a builder node that can be used to add more nodes to the XML document.
     *
     * @throws FactoryConfigurationError
     * @throws ParserConfigurationException
     */
    public static XMLBuilder create(String name, String namespaceURI)
        throws ParserConfigurationException, FactoryConfigurationError
    {
        return new XMLBuilder(createDocumentImpl(name, namespaceURI));
    }

    /**
     * Construct a builder for new XML document. The document will be created
     * with the given root element, and the builder returned by this method
     * will serve as the starting-point for any further document additions.
     *
     * @param name
     * the name of the document's root element.
     * @return
     * a builder node that can be used to add more nodes to the XML document.
     *
     * @throws FactoryConfigurationError
     * @throws ParserConfigurationException
     */
    public static XMLBuilder create(String name)
        throws ParserConfigurationException, FactoryConfigurationError
    {
        return create(name, null);
    }

    /**
     * Construct a builder from an existing XML document. The provided XML
     * document will be parsed and an XMLBuilder object referencing the
     * document's root element will be returned.
     *
     * @param inputSource
     * an XML document input source that will be parsed into a DOM.
     * @return
     * a builder node that can be used to add more nodes to the XML document.
     * @throws ParserConfigurationException
     *
     * @throws FactoryConfigurationError
     * @throws ParserConfigurationException
     * @throws IOException
     * @throws SAXException
     */
    public static XMLBuilder parse(InputSource inputSource)
        throws ParserConfigurationException, SAXException, IOException
    {
        return new XMLBuilder(parseDocumentImpl(inputSource));
    }

    /**
     * Construct a builder from an existing XML document string.
     * The provided XML document will be parsed and an XMLBuilder
     * object referencing the document's root element will be returned.
     *
     * @param xmlString
     * an XML document string that will be parsed into a DOM.
     * @return
     * a builder node that can be used to add more nodes to the XML document.
     *
     * @throws ParserConfigurationException
     * @throws FactoryConfigurationError
     * @throws ParserConfigurationException
     * @throws IOException
     * @throws SAXException
     */
    public static XMLBuilder parse(String xmlString)
        throws ParserConfigurationException, SAXException, IOException
    {
        return XMLBuilder.parse(new InputSource(new StringReader(xmlString)));
    }

    /**
     * Construct a builder from an existing XML document file.
     * The provided XML document will be parsed and an XMLBuilder
     * object referencing the document's root element will be returned.
     *
     * @param xmlFile
     * an XML document file that will be parsed into a DOM.
     * @return
     * a builder node that can be used to add more nodes to the XML document.
     *
     * @throws ParserConfigurationException
     * @throws FactoryConfigurationError
     * @throws ParserConfigurationException
     * @throws IOException
     * @throws SAXException
     */
    public static XMLBuilder parse(File xmlFile)
        throws ParserConfigurationException, SAXException, IOException
    {
        return XMLBuilder.parse(new InputSource(new FileReader(xmlFile)));
    }

    @Override
    public XMLBuilder stripWhitespaceOnlyTextNodes()
        throws XPathExpressionException
    {
        super.stripWhitespaceOnlyTextNodesImpl();
        return this;
    }

    @Override
    public XMLBuilder importXMLBuilder(BaseXMLBuilder builder) {
        super.importXMLBuilderImpl(builder);
        return this;
    }

    @Override
    public XMLBuilder root() {
        return new XMLBuilder(getDocument());
    }

    @Override
    public XMLBuilder xpathFind(String xpath, NamespaceContext nsContext)
        throws XPathExpressionException
    {
        Node foundNode = super.xpathFindImpl(xpath, nsContext);
        return new XMLBuilder(foundNode, null);
    }

    @Override
    public XMLBuilder xpathFind(String xpath) throws XPathExpressionException {
        return xpathFind(xpath, null);
    }

    @Override
    public XMLBuilder element(String name) {
        String namespaceURI = super.lookupNamespaceURIImpl(name);
        return element(name, namespaceURI);
    }

    @Override
    public XMLBuilder elem(String name) {
        return element(name);
    }

    @Override
    public XMLBuilder e(String name) {
        return element(name);
    }

    @Override
    public XMLBuilder element(String name, String namespaceURI) {
        Element elem = super.elementImpl(name, namespaceURI);
        return new XMLBuilder(elem, this.getElement());
    }

    @Override
    public XMLBuilder elementBefore(String name) {
        Element newElement = super.elementBeforeImpl(name);
        return new XMLBuilder(newElement, null);
    }

    @Override
    public XMLBuilder elementBefore(String name, String namespaceURI) {
        Element newElement = super.elementBeforeImpl(name, namespaceURI);
        return new XMLBuilder(newElement, null);
    }

    @Override
    public XMLBuilder attribute(String name, String value) {
        super.attributeImpl(name, value);
        return this;
    }

    @Override
    public XMLBuilder attr(String name, String value) {
        return attribute(name, value);
    }

    @Override
    public XMLBuilder a(String name, String value) {
        return attribute(name, value);
    }

    @Override
    public XMLBuilder text(String value, boolean replaceText) {
        super.textImpl(value, replaceText);
        return this;
    }

    @Override
    public XMLBuilder text(String value) {
        return this.text(value, false);
    }

    @Override
    public XMLBuilder t(String value) {
        return text(value);
    }

    @Override
    public XMLBuilder cdata(String data) {
        super.cdataImpl(data);
        return this;
    }

    @Override
    public XMLBuilder data(String data) {
        return cdata(data);
    }

    @Override
    public XMLBuilder d(String data) {
        return cdata(data);
    }

    @Override
    public XMLBuilder cdata(byte[] data) {
        super.cdataImpl(data);
        return this;
    }

    @Override
    public XMLBuilder data(byte[] data) {
        return cdata(data);
    }

    @Override
    public XMLBuilder d(byte[] data) {
        return cdata(data);
    }

    @Override
    public XMLBuilder comment(String comment) {
        super.commentImpl(comment);
        return this;
    }

    @Override
    public XMLBuilder cmnt(String comment) {
        return comment(comment);
    }

    @Override
    public XMLBuilder c(String comment) {
        return comment(comment);
    }

    @Override
    public XMLBuilder instruction(String target, String data) {
        super.instructionImpl(target, data);
        return this;
    }

    @Override
    public XMLBuilder inst(String target, String data) {
        return instruction(target, data);
    }

    @Override
    public XMLBuilder i(String target, String data) {
        return instruction(target, data);
    }

    @Override
    public XMLBuilder insertInstruction(String target, String data) {
        super.insertInstructionImpl(target, data);
        return this;
    }

    @Override
    public XMLBuilder reference(String name) {
        super.referenceImpl(name);
        return this;
    }

    @Override
    public XMLBuilder ref(String name) {
        return reference(name);
    }

    @Override
    public XMLBuilder r(String name) {
        return reference(name);
    }

    @Override
    public XMLBuilder namespace(String prefix, String namespaceURI) {
        super.namespaceImpl(prefix, namespaceURI);
        return this;
    }

    @Override
    public XMLBuilder ns(String prefix, String namespaceURI) {
        return attribute(prefix, namespaceURI);
    }

    @Override
    public XMLBuilder namespace(String namespaceURI) {
        this.namespace(null, namespaceURI);
        return this;
    }

    @Override
    public XMLBuilder ns(String namespaceURI) {
        return namespace(namespaceURI);
    }

    @Override
    public XMLBuilder up(int steps) {
        Node currNode = super.upImpl(steps);
        if (currNode instanceof Document) {
            return new XMLBuilder((Document) currNode);
        } else {
            return new XMLBuilder(currNode, null);
        }
    }

    @Override
    public XMLBuilder up() {
        return up(1);
    }

    @Override
    public XMLBuilder document() {
        return new XMLBuilder(getDocument(), null);
    }

}

## 内容4
### 文件路径：
src/main/java/com/jamesmurty/utils/XMLBuilder2.java
### 代码内容：
package com.jamesmurty.utils;

import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
import java.io.StringReader;
import java.io.Writer;
import java.util.Properties;

import javax.xml.namespace.NamespaceContext;
import javax.xml.namespace.QName;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import javax.xml.transform.TransformerException;
import javax.xml.xpath.XPathExpressionException;

import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;

/**
 * XML Builder is a utility that creates simple XML documents using relatively
 * sparse Java code. It is intended to allow for quick and painless creation of
 * XML documents where you might otherwise be tempted to use concatenated
 * strings, rather than face the tedium and verbosity of coding with
 * JAXP (http://jaxp.dev.java.net/).
 * <p>
 * Internally, XML Builder uses JAXP to build a standard W3C
 * {@link org.w3c.dom.Document} model (DOM) that you can easily export as a
 * string, or access and manipulate further if you have special requirements.
 * </p>
 * <p>
 * The XMLBuilder2 class serves as a wrapper of {@link org.w3c.dom.Element} nodes,
 * and provides a number of utility methods that make it simple to
 * manipulate the underlying element and the document to which it belongs.
 * In essence, this class performs dual roles: it represents a specific XML
 * node, and also allows manipulation of the entire underlying XML document.
 * The platform's default {@link DocumentBuilderFactory} and
 * {@link DocumentBuilder} classes are used to build the document.
 * </p>
 * <p>
 * XMLBuilder2 has an feature set to the original XMLBuilder, but only ever
 * throws runtime exceptions (as opposed to checked exceptions). Any internal
 * checked exceptions are caught and wrapped in an
 * {@link XMLBuilderRuntimeException} object.
 * </p>
 *
 * @author James Murty
 */
public final class XMLBuilder2 extends BaseXMLBuilder {

    /**
     * Construct a new builder object that wraps the given XML document.
     * This constructor is for internal use only.
     *
     * @param xmlDocument
     * an XML document that the builder will manage and manipulate.
     */
    protected XMLBuilder2(Document xmlDocument) {
        super(xmlDocument);
    }

    /**
     * Construct a new builder object that wraps the given XML document and node.
     * This constructor is for internal use only.
     *
     * @param myNode
     * the XML node that this builder node will wrap. This node may
     * be part of the XML document, or it may be a new element that is to be
     * added to the document.
     * @param parentNode
     * If not null, the given myElement will be appended as child node of the
     * parentNode node.
     */
    protected XMLBuilder2(Node myNode, Node parentNode) {
        super(myNode, parentNode);
    }

    private static RuntimeException wrapExceptionAsRuntimeException(Exception e) {
        // Don't wrap (or re-wrap) runtime exceptions.
        if (e instanceof RuntimeException) {
            return (RuntimeException) e;
        } else {
            return new XMLBuilderRuntimeException(e);
        }
    }

    /**
     * Construct a builder for new XML document with a default namespace.
     * The document will be created with the given root element, and the builder
     * returned by this method will serve as the starting-point for any further
     * document additions.
     *
     * @param name
     * the name of the document's root element.
     * @param namespaceURI
     * default namespace URI for document, ignored if null or empty.
     * @return
     * a builder node that can be used to add more nodes to the XML document.
     * @throws XMLBuilderRuntimeException
     * to wrap {@link ParserConfigurationException}
     */
    public static XMLBuilder2 create(String name, String namespaceURI)
    {
        try {
            return new XMLBuilder2(createDocumentImpl(name, namespaceURI));
        } catch (ParserConfigurationException e) {
            throw wrapExceptionAsRuntimeException(e);
        }
    }

    /**
     * Construct a builder for new XML document. The document will be created
     * with the given root element, and the builder returned by this method
     * will serve as the starting-point for any further document additions.
     *
     * @param name
     * the name of the document's root element.
     * @return
     * a builder node that can be used to add more nodes to the XML document.
     * @throws XMLBuilderRuntimeException
     * to wrap {@link ParserConfigurationException}
     */
    public static XMLBuilder2 create(String name)
    {
        return create(name, null);
    }

    /**
     * Construct a builder from an existing XML document. The provided XML
     * document will be parsed and an XMLBuilder2 object referencing the
     * document's root element will be returned.
     *
     * @param inputSource
     * an XML document input source that will be parsed into a DOM.
     * @return
     * a builder node that can be used to add more nodes to the XML document.
     * @throws XMLBuilderRuntimeException
     * to wrap {@link ParserConfigurationException}, {@link SAXException},
     * {@link IOException}
     */
    public static XMLBuilder2 parse(InputSource inputSource)
    {
        try {
            return new XMLBuilder2(parseDocumentImpl(inputSource));
        } catch (ParserConfigurationException e) {
            throw wrapExceptionAsRuntimeException(e);
        } catch (SAXException e) {
            throw wrapExceptionAsRuntimeException(e);
        } catch (IOException e) {
            throw wrapExceptionAsRuntimeException(e);
        }
    }

    /**
     * Construct a builder from an existing XML document string.
     * The provided XML document will be parsed and an XMLBuilder2
     * object referencing the document's root element will be returned.
     *
     * @param xmlString
     * an XML document string that will be parsed into a DOM.
     * @return
     * a builder node that can be used to add more nodes to the XML document.
     */
    public static XMLBuilder2 parse(String xmlString)
    {
        return XMLBuilder2.parse(new InputSource(new StringReader(xmlString)));
    }

    /**
     * Construct a builder from an existing XML document file.
     * The provided XML document will be parsed and an XMLBuilder2
     * object referencing the document's root element will be returned.
     *
     * @param xmlFile
     * an XML document file that will be parsed into a DOM.
     * @return
     * a builder node that can be used to add more nodes to the XML document.
     * @throws XMLBuilderRuntimeException
     * to wrap {@link ParserConfigurationException}, {@link SAXException},
     * {@link IOException}, {@link FileNotFoundException}
     */
    public static XMLBuilder2 parse(File xmlFile)
    {
        try {
            return XMLBuilder2.parse(new InputSource(new FileReader(xmlFile)));
        } catch (FileNotFoundException e) {
            throw wrapExceptionAsRuntimeException(e);
        }
    }

    /**
     * @throws XMLBuilderRuntimeException
     * to wrap {@link XPathExpressionException}
     */
    @Override
    public XMLBuilder2 stripWhitespaceOnlyTextNodes()
    {
        try {
            super.stripWhitespaceOnlyTextNodesImpl();
            return this;
        } catch (XPathExpressionException e) {
            throw wrapExceptionAsRuntimeException(e);
        }
    }

    @Override
    public XMLBuilder2 importXMLBuilder(BaseXMLBuilder builder) {
        super.importXMLBuilderImpl(builder);
        return this;
    }

    @Override
    public XMLBuilder2 root() {
        return new XMLBuilder2(getDocument());
    }

    /**
     * @throws XMLBuilderRuntimeException
     * to wrap {@link XPathExpressionException}
     */
    @Override
    public XMLBuilder2 xpathFind(String xpath, NamespaceContext nsContext)
    {
        try {
            Node foundNode = super.xpathFindImpl(xpath, nsContext);
            return new XMLBuilder2(foundNode, null);
        } catch (XPathExpressionException e) {
            throw wrapExceptionAsRuntimeException(e);
        }
    }

    @Override
    public XMLBuilder2 xpathFind(String xpath) {
        return xpathFind(xpath, null);
    }

    @Override
    public XMLBuilder2 element(String name) {
        String namespaceURI = super.lookupNamespaceURIImpl(name);
        return element(name, namespaceURI);
    }

    @Override
    public XMLBuilder2 elem(String name) {
        return element(name);
    }

    @Override
    public XMLBuilder2 e(String name) {
        return element(name);
    }

    @Override
    public XMLBuilder2 element(String name, String namespaceURI) {
        Element elem = super.elementImpl(name, namespaceURI);
        return new XMLBuilder2(elem, this.getElement());
    }

    @Override
    public XMLBuilder2 elementBefore(String name) {
        Element newElement = super.elementBeforeImpl(name);
        return new XMLBuilder2(newElement, null);
    }

    @Override
    public XMLBuilder2 elementBefore(String name, String namespaceURI) {
        Element newElement = super.elementBeforeImpl(name, namespaceURI);
        return new XMLBuilder2(newElement, null);
    }

    @Override
    public XMLBuilder2 attribute(String name, String value) {
        super.attributeImpl(name, value);
        return this;
    }

    @Override
    public XMLBuilder2 attr(String name, String value) {
        return attribute(name, value);
    }

    @Override
    public XMLBuilder2 a(String name, String value) {
        return attribute(name, value);
    }

    @Override
    public XMLBuilder2 text(String value, boolean replaceText) {
        super.textImpl(value, replaceText);
        return this;
    }

    @Override
    public XMLBuilder2 text(String value) {
        return this.text(value, false);
    }

    @Override
    public XMLBuilder2 t(String value) {
        return text(value);
    }

    @Override
    public XMLBuilder2 cdata(String data) {
        super.cdataImpl(data);
        return this;
    }

    @Override
    public XMLBuilder2 data(String data) {
        return cdata(data);
    }

    @Override
    public XMLBuilder2 d(String data) {
        return cdata(data);
    }

    @Override
    public XMLBuilder2 cdata(byte[] data) {
        super.cdataImpl(data);
        return this;
    }

    @Override
    public XMLBuilder2 data(byte[] data) {
        return cdata(data);
    }

    @Override
    public XMLBuilder2 d(byte[] data) {
        return cdata(data);
    }

    @Override
    public XMLBuilder2 comment(String comment) {
        super.commentImpl(comment);
        return this;
    }

    @Override
    public XMLBuilder2 cmnt(String comment) {
        return comment(comment);
    }

    @Override
    public XMLBuilder2 c(String comment) {
        return comment(comment);
    }

    @Override
    public XMLBuilder2 instruction(String target, String data) {
        super.instructionImpl(target, data);
        return this;
    }

    @Override
    public XMLBuilder2 inst(String target, String data) {
        return instruction(target, data);
    }

    @Override
    public XMLBuilder2 i(String target, String data) {
        return instruction(target, data);
    }

    @Override
    public XMLBuilder2 insertInstruction(String target, String data) {
        super.insertInstructionImpl(target, data);
        return this;
    }

    @Override
    public XMLBuilder2 reference(String name) {
        super.referenceImpl(name);
        return this;
    }

    @Override
    public XMLBuilder2 ref(String name) {
        return reference(name);
    }

    @Override
    public XMLBuilder2 r(String name) {
        return reference(name);
    }

    @Override
    public XMLBuilder2 namespace(String prefix, String namespaceURI) {
        super.namespaceImpl(prefix, namespaceURI);
        return this;
    }

    @Override
    public XMLBuilder2 ns(String prefix, String namespaceURI) {
        return attribute(prefix, namespaceURI);
    }

    @Override
    public XMLBuilder2 namespace(String namespaceURI) {
        this.namespace(null, namespaceURI);
        return this;
    }

    @Override
    public XMLBuilder2 ns(String namespaceURI) {
        return namespace(namespaceURI);
    }

    @Override
    public XMLBuilder2 up(int steps) {
        Node currNode = super.upImpl(steps);
        if (currNode instanceof Document) {
            return new XMLBuilder2((Document) currNode);
        } else {
            return new XMLBuilder2(currNode, null);
        }
    }

    @Override
    public XMLBuilder2 up() {
        return up(1);
    }

    @Override
    public XMLBuilder2 document() {
        return new XMLBuilder2(getDocument(), null);
    }

    /**
     * @throws XMLBuilderRuntimeException
     * to wrap {@link TransformerException}
     *
     */
    @Override
    public String asString() {
        try {
            return super.asString();
        } catch (TransformerException e) {
            throw wrapExceptionAsRuntimeException(e);
        }
    }

    /**
     * @throws XMLBuilderRuntimeException
     * to wrap {@link TransformerException}
     *
     */
    @Override
    public String asString(Properties properties) {
        try {
            return super.asString(properties);
        } catch (TransformerException e) {
            throw wrapExceptionAsRuntimeException(e);
        }
    }

    /**
     * @throws XMLBuilderRuntimeException
     * to wrap {@link TransformerException}
     *
     */
    @Override
    public String elementAsString() {
        try {
            return super.elementAsString();
        } catch (TransformerException e) {
            throw wrapExceptionAsRuntimeException(e);
        }
    }

    /**
     * @throws XMLBuilderRuntimeException
     * to wrap {@link TransformerException}
     *
     */
    @Override
    public String elementAsString(Properties outputProperties) {
        try {
            return super.elementAsString(outputProperties);
        } catch (TransformerException e) {
            throw wrapExceptionAsRuntimeException(e);
        }
    }

    /**
     * @throws XMLBuilderRuntimeException
     * to wrap {@link TransformerException}
     *
     */
    @Override
    public void toWriter(boolean wholeDocument, Writer writer, Properties outputProperties)
    {
        try {
            super.toWriter(wholeDocument, writer, outputProperties);
        } catch (TransformerException e) {
            throw wrapExceptionAsRuntimeException(e);
        }
    }

    /**
     * @throws XMLBuilderRuntimeException
     * to wrap {@link TransformerException}
     *
     */
    @Override
    public void toWriter(Writer writer, Properties outputProperties)
    {
        try {
            super.toWriter(writer, outputProperties);
        } catch (TransformerException e) {
            throw wrapExceptionAsRuntimeException(e);
        }
    }

    /**
     * @throws XMLBuilderRuntimeException
     * to wrap {@link XPathExpressionException}
     *
     */
    @Override
    public Object xpathQuery(String xpath, QName type, NamespaceContext nsContext)
    {
        try {
            return super.xpathQuery(xpath, type, nsContext);
        } catch (XPathExpressionException e) {
            throw wrapExceptionAsRuntimeException(e);
        }
    }

    /**
     * @throws XMLBuilderRuntimeException
     * to wrap {@link XPathExpressionException}
     *
     */
    @Override
    public Object xpathQuery(String xpath, QName type)
    {
        try {
            return super.xpathQuery(xpath, type);
        } catch (XPathExpressionException e) {
            throw wrapExceptionAsRuntimeException(e);
        }
    }

}

Output:
【漏洞类型】XML外部实体（XXE）注入漏洞

【严重性】High

【漏洞摘要】此代码在解析XML文档时未禁用外部实体处理，导致潜在的XXE注入攻击。具体表现为在XMLBuilder和XMLBuilder2类的create和parse方法中，DocumentBuilderFactory和DocumentBuilder没有配置禁用外部实体（'external-general-entities'和'external-parameter-entities'）处理。这使得攻击者可以通过恶意构造的XML输入，利用外部实体来执行任意文件读取或其他恶意操作，从而可能泄露敏感信息或破坏系统。

【关键代码模式】
- 关键函数：createDocumentImpl和parseDocumentImpl
- 关键关键词：DocumentBuilderFactory, DocumentBuilder, setFeature
- 问题模式：未配置DocumentBuilderFactory以禁用外部实体解析，攻击者可以利用XXE注入攻击。

【修复方法说明】修复方法通过在DocumentBuilderFactory中显式禁用外部实体解析（'external-general-entities'和'external-parameter-entities'），来防止XXE注入攻击。最佳实践包括始终禁用外部实体处理，除非明确需要，且在启用时要严格控制输入。


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：
src/main/java/com/openkm/extractor/OpenOfficeTextExtractor.java
### 代码内容：
package com.openkm.extractor;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.xml.sax.Attributes;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;
import org.xml.sax.XMLReader;
import org.xml.sax.helpers.DefaultHandler;

import javax.xml.parsers.ParserConfigurationException;
import javax.xml.parsers.SAXParser;
import javax.xml.parsers.SAXParserFactory;
import java.io.IOException;
import java.io.InputStream;
import java.util.zip.ZipEntry;
import java.util.zip.ZipInputStream;

/**
 * Text extractor for OpenOffice documents.
 */
public class OpenOfficeTextExtractor extends AbstractTextExtractor {

	/**
	 * Logger instance.
	 */
	private static final Logger logger = LoggerFactory.getLogger(OpenOfficeTextExtractor.class);

	/**
	 * Creates a new OpenOfficeTextExtractor instance.
	 */
	public OpenOfficeTextExtractor() {
		super(new String[]{"application/vnd.oasis.opendocument.database", "application/vnd.oasis.opendocument.formula",
				"application/vnd.oasis.opendocument.graphics", "application/vnd.oasis.opendocument.presentation",
				"application/vnd.oasis.opendocument.spreadsheet", "application/vnd.oasis.opendocument.text",
				"application/vnd.sun.xml.calc", "application/vnd.sun.xml.draw", "application/vnd.sun.xml.impress",
				"application/vnd.sun.xml.writer"});
	}

	// -------------------------------------------------------< TextExtractor >

	/**
	 * {@inheritDoc}
	 */
	public String extractText(InputStream stream, String type, String encoding) throws IOException {
		try {
			SAXParserFactory saxParserFactory = SAXParserFactory.newInstance();
			saxParserFactory.setValidating(false);
			SAXParser saxParser = saxParserFactory.newSAXParser();
			XMLReader xmlReader = saxParser.getXMLReader();
			xmlReader.setFeature("http://xml.org/sax/features/validation", false);
			xmlReader.setFeature("http://apache.org/xml/features/nonvalidating/load-external-dtd", false);

			ZipInputStream zis = new ZipInputStream(stream);
			ZipEntry ze = zis.getNextEntry();

			while (ze != null && !ze.getName().equals("content.xml")) {
				ze = zis.getNextEntry();
			}

			OpenOfficeContentHandler contentHandler = new OpenOfficeContentHandler();
			xmlReader.setContentHandler(contentHandler);

			try {
				xmlReader.parse(new InputSource(zis));
			} finally {
				zis.close();
			}

			return contentHandler.getContent();
		} catch (ParserConfigurationException | SAXException e) {
			logger.warn("Failed to extract OpenOffice text content", e);
			throw new IOException(e.getMessage(), e);
		} finally {
			stream.close();
		}
	}

	// --------------------------------------------< OpenOfficeContentHandler >

	private static class OpenOfficeContentHandler extends DefaultHandler {
		private StringBuffer content;
		private boolean appendChar;

		public OpenOfficeContentHandler() {
			content = new StringBuffer();
			appendChar = false;
		}

		/**
		 * Returns the text content extracted from parsed content.xml
		 */
		public String getContent() {
			return content.toString();
		}

		public void startElement(String namespaceURI, String localName, String rawName, Attributes atts) throws SAXException {
			if (rawName.startsWith("text:")) {
				appendChar = true;
			}
		}

		public void characters(char[] ch, int start, int length) throws SAXException {
			if (appendChar) {
				content.append(ch, start, length).append(" ");
			}
		}

		public void endElement(String namespaceURI, String localName, String qName) throws SAXException {
			appendChar = false;
		}
	}
}

## 内容2
### 文件路径：
src/main/java/com/openkm/extractor/XMLTextExtractor.java
### 代码内容：
package com.openkm.extractor;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;
import org.xml.sax.XMLReader;

import javax.xml.parsers.ParserConfigurationException;
import javax.xml.parsers.SAXParser;
import javax.xml.parsers.SAXParserFactory;
import java.io.CharArrayWriter;
import java.io.FilterInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.nio.charset.Charset;

/**
 * Text extractor for XML documents. This class extracts the text content
 * and attribute values from XML documents.
 *

 * This class can handle any XML-based format (application/xml+something), not just the base XML content
 * types reported by {@link #getContentTypes()}. However, it often makes sense to use more specialized extractors that
 * better understand the specific content type.
 */
public class XMLTextExtractor extends AbstractTextExtractor {

	/**
	 * Logger instance.
	 */
	private static final Logger logger = LoggerFactory.getLogger(XMLTextExtractor.class);

	/**
	 * Creates a new XMLTextExtractor instance.
	 */
	public XMLTextExtractor() {
		super(new String[]{"text/xml", "application/xml", "application/vnd.scribus"});
	}

	// -------------------------------------------------------< TextExtractor >

	/**
	 * Returns a reader for the text content of the given XML document.
	 * Returns an empty reader if the given encoding is not supported or
	 * if the XML document could not be parsed.
	 *
	 * @param stream XML document
	 * @param type XML content type
	 * @param encoding character encoding, or null
	 * @return reader for the text content of the given XML document,
	 *         or an empty reader if the document could not be parsed
	 * @throws IOException if the XML document stream can not be closed
	 */
	public String extractText(InputStream stream, String type, String encoding) throws IOException {
		try {
			CharArrayWriter writer = new CharArrayWriter();
			ExtractorHandler handler = new ExtractorHandler(writer);

			// TODO: Use a pull parser to avoid the memory overhead
			SAXParserFactory factory = SAXParserFactory.newInstance();
			SAXParser parser = factory.newSAXParser();
			XMLReader reader = parser.getXMLReader();
			reader.setContentHandler(handler);
			reader.setErrorHandler(handler);

			// It is unspecified whether the XML parser closes the stream when
			// done parsing. To ensure that the stream gets closed just once,
			// we prevent the parser from closing it by catching the close()
			// call and explicitly close the stream in a finally block.
			InputSource source = new InputSource(new FilterInputStream(stream) {
				public void close() {
				}
			});

			if (encoding != null) {
				try {
					Charset.forName(encoding);
					source.setEncoding(encoding);
				} catch (Exception e) {
					logger.warn("Unsupported encoding '{}', using default ({}) instead.",
							new Object[]{encoding, System.getProperty("file.encoding")});
				}
			}

			reader.parse(source);
			return writer.toString();
		} catch (ParserConfigurationException | SAXException e) {
			logger.warn("Failed to extract XML text content", e);
			throw new IOException(e.getMessage(), e);
		} finally {
			stream.close();
		}
	}
}

Output:
【漏洞类型】XXE（XML External Entity）注入漏洞
【严重性】High
【漏洞摘要】XXE是一种XML安全漏洞，允许攻击者通过恶意构造的XML输入，利用XML解析器的特性从外部系统读取敏感信息，甚至可能执行远程代码。在这个代码中，`XMLTextExtractor` 类在解析XML文档时没有禁用外部实体解析，导致存在XXE漏洞。具体表现为：
1. 在 `OpenOfficeTextExtractor` 类的 `extractText` 方法中，`XMLReader` 对象的 `validation` 和 `load-external-dtd` 特性被设置为 `false`，但没有禁用 `external-parameter-entities` 和 `external-general-entities`。
2. 在 `XMLTextExtractor` 类的 `extractText` 方法中，同样没有禁用这些外部实体特性。
根本原因在于，XML解析器默认情况下允许解析外部实体，而代码中没有明确禁用这些特性，使得攻击者可以利用XXE注入攻击来读取服务器上的文件，甚至执行远程代码。
【关键代码模式】与XXE漏洞相关的关键代码模式包括：
1. 使用 `SAXParserFactory` 创建 `SAXParser` 对象。
2. 获取 `XMLReader` 对象并设置特性。
3. 解析 `InputSource` 对象。
关键函数或关键词包括 `SAXParserFactory.newInstance()`, `SAXParser.newSAXParser()`, `XMLReader.setFeature()`, `XMLReader.parse()`, `InputSource`。
【修复方法说明】修复方法通过在 `XMLReader` 对象中禁用 `external-parameter-entities` 和 `external-general-entities` 特性来解决问题，以防止外部实体注入攻击。最佳实践是始终禁用这些特性，除非有特定需求且已进行充分的安全评估。