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：
pac4j-core/src/main/java/org/pac4j/core/util/CommonHelper.java
### 代码内容：
package org.pac4j.core.util;

import org.pac4j.core.exception.TechnicalException;

import java.io.UnsupportedEncodingException;
import java.net.*;
import java.nio.charset.StandardCharsets;
import java.util.Collection;
import java.util.Date;

/**
 * This class gathers all the utilities methods.
 *
 * @author Jerome Leleu
 * @since 1.4.0
 */
public final class CommonHelper {

    /**
     * Return if the String is not blank.
     *
     * @param s string
     * @return if the String is not blank
     */
    public static boolean isNotBlank(final String s) {
        if (s == null) {
            return false;
        }
        return s.trim().length() > 0;
    }

    /**
     * Return if the String is blank.
     *
     * @param s string
     * @return if the String is blank
     */
    public static boolean isBlank(final String s) {
        return !isNotBlank(s);
    }

    /**
     * Compare two String to see if they are equals (both null is ok).
     *
     * @param s1 string
     * @param s2 string
     * @return if two String are equals
     */
    public static boolean areEquals(final String s1, final String s2) {
        return s1 == null ? s2 == null : s1.equals(s2);
    }

    /**
     * Compare two String to see if they are equals ignoring the case and the blank spaces (both null is ok).
     *
     * @param s1 string
     * @param s2 string
     * @return if two String are equals ignoring the case and the blank spaces
     */
    public static boolean areEqualsIgnoreCaseAndTrim(final String s1, final String s2) {
        if (s1 == null && s2 == null) {
            return true;
        } else if (s1 != null && s2 != null) {
            return s1.trim().equalsIgnoreCase(s2.trim());
        } else {
            return false;
        }
    }

    /**
     * Compare two String to see if they are not equals.
     *
     * @param s1 string
     * @param s2 string
     * @return if two String are not equals
     */
    public static boolean areNotEquals(final String s1, final String s2) {
        return !areEquals(s1, s2);
    }

    /**
     * Return if a collection is empty.
     *
     * @param coll a collection
     * @return whether it is empty
     */
    public static boolean isEmpty(final Collection<?> coll) {
        return coll == null || coll.isEmpty();
    }

    /**
     * Return if a collection is not empty.
     *
     * @param coll a collection
     * @return whether it is not empty
     */
    public static boolean isNotEmpty(final Collection<?> coll) {
        return !isEmpty(coll);
    }

    /**
     * Verify that a boolean is true otherwise throw a {@link TechnicalException}.
     *
     * @param value   the value to be checked for truth
     * @param message the message to include in the exception if the value is false
     */
    public static void assertTrue(final boolean value, final String message) {
        if (!value) {
            throw new TechnicalException(message);
        }
    }

    /**
     * Verify that a String is not blank otherwise throw a {@link TechnicalException}.
     *
     * @param name  name if the string
     * @param value value of the string
     * @param msg an expanatory message
     */
    public static void assertNotBlank(final String name, final String value, final String msg) {
        assertTrue(!isBlank(value), name + " cannot be blank" + (msg != null ? ": " + msg : ""));
    }

    /**
     * Verify that a String is not blank otherwise throw a {@link TechnicalException}.
     *
     * @param name  name if the string
     * @param value value of the string
     */
    public static void assertNotBlank(final String name, final String value) {
        assertNotBlank(name, value, null);
    }

    /**
     * Verify that an Object is not null otherwise throw a {@link TechnicalException}.
     *
     * @param name name of the object
     * @param obj  object
     */
    public static void assertNotNull(final String name, final Object obj) {
        assertTrue(obj != null, name + " cannot be null");
    }

    /**
     * Verify that an Object is null otherwise throw a {@link TechnicalException}.
     *
     * @param name name of the object
     * @param obj  object
     */
    public static void assertNull(final String name, final Object obj) {
        assertTrue(obj == null, name + " must be null");
    }

    /**
     * Add a new parameter to an url.
     *
     * @param url   url
     * @param name  name of the parameter
     * @param value value of the parameter
     * @return the new url with the parameter appended
     */
    public static String addParameter(final String url, final String name, final String value) {
        if (url != null) {
            final StringBuilder sb = new StringBuilder();
            sb.append(url);
            if (name != null) {
                if (url.indexOf("?") >= 0) {
                    sb.append("&");
                } else {
                    sb.append("?");
                }
                sb.append(name);
                sb.append("=");
                if (value != null) {
                    sb.append(urlEncode(value));
                }
            }
            return sb.toString();
        }
        return null;
    }

    /**
     * URL encode a text using UTF-8.
     *
     * @param text text to encode
     * @return the encoded text
     */
    public static String urlEncode(final String text) {
        try {
            return URLEncoder.encode(text, StandardCharsets.UTF_8.name());
        } catch (final UnsupportedEncodingException e) {
            final String message = "Unable to encode text : " + text;
            throw new TechnicalException(message, e);
        }
    }

    /**
     * Build a "nice toString" for an object.
     *
     * @param clazz class
     * @param args  arguments
     * @return a "nice toString" text
     */
    public static String toNiceString(final Class<?> clazz, final Object... args) {
        final StringBuilder sb = new StringBuilder();
        sb.append("#");
        sb.append(clazz.getSimpleName());
        sb.append("# |");
        boolean b = true;
        for (final Object arg : args) {
            if (b) {
                sb.append(" ");
                sb.append(arg);
                sb.append(":");
            } else {
                sb.append(" ");
                sb.append(arg);
                sb.append(" |");
            }
            b = !b;
        }
        return sb.toString();
    }

    /**
     * Return a random string of a certain size.
     *
     * @param size the size
     * @return the random size
     */
    public static String randomString(final int size) {
        return java.util.UUID.randomUUID().toString().replace("-", "").substring(0, size);
    }

    /**
     * Copy a date.
     *
     * @param original original date
     * @return date copy
     */
    public static Date newDate(final Date original) {
        return original != null ? new Date(original.getTime()) : null;
    }

    /**
     * Convert a string into an URI.
     *
     * @param s the string
     * @return the URI
     */
    public static URI asURI(final String s) {
        try {
            return new URI(s);
        } catch (final URISyntaxException e) {
            throw new TechnicalException("Cannot make an URI from: " + s, e);
        }
    }

    /**
     * Taken from commons-lang3
     */

    private static final String EMPTY = "";
    private static final int INDEX_NOT_FOUND = -1;

    public static String substringBetween(final String str, final String open, final String close) {
        if (str == null || open == null || close == null) {
            return null;
        }
        int start = str.indexOf(open);
        if (start != INDEX_NOT_FOUND) {
            int end = str.indexOf(close, start + open.length());
            if (end != INDEX_NOT_FOUND) {
                return str.substring(start + open.length(), end);
            }
        }
        return null;
    }

    public static String substringAfter(final String str, final String separator) {
        if (isEmpty(str)) {
            return str;
        }
        if (separator == null) {
            return EMPTY;
        }
        int pos = str.indexOf(separator);
        if (pos == INDEX_NOT_FOUND) {
            return EMPTY;
        }
        return str.substring(pos + separator.length());
    }

    public static String substringBefore(final String str, final String separator) {
        if (isEmpty(str) || separator == null) {
            return str;
        }
        if (separator.length() == 0) {
            return EMPTY;
        }
        int pos = str.indexOf(separator);
        if (pos == INDEX_NOT_FOUND) {
            return str;
        }
        return str.substring(0, pos);
    }

    private static boolean isEmpty(final CharSequence cs) {
        return cs == null || cs.length() == 0;
    }
}

## 内容2
### 文件路径：
pac4j-saml/src/main/java/org/pac4j/saml/util/SAML2Utils.java
### 代码内容：
package org.pac4j.saml.util;

import java.net.URI;
import java.net.URISyntaxException;

import org.apache.commons.lang.RandomStringUtils;
import org.pac4j.core.context.HttpConstants;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * SAML2 utilities.
 *
 * @author jkacer
 * @since 1.8.0
 */
public final class SAML2Utils implements HttpConstants {

    /** SLF4J logger. */
    private static final Logger logger = LoggerFactory.getLogger(SAML2Utils.class);

    /**
     * Private constructor, to prevent instantiation of this utility class.
     */
    private SAML2Utils() {
        super();
    }

    public static String generateID() {
        return "_".concat(RandomStringUtils.randomAlphanumeric(39)).toLowerCase();
    }

    /**
     * Compares two URIs for equality, ignoring default port numbers for selected protocols.
     *
     * By default, {@link URI#equals(Object)} doesn't take into account default port numbers, so http://server:80/resource is a different
     * URI than http://server/resource.
     *
     * And URLs should not be used for comparison, as written here:
     * http://stackoverflow.com/questions/3771081/proper-way-to-check-for-url-equality
     *
     * @param uri1
     *            URI 1 to be compared.
     * @param uri2
     *            URI 2 to be compared.
     *
     * @return True if both URIs are equal.
     */
    public static boolean urisEqualAfterPortNormalization(final URI uri1, final URI uri2) {
        if (uri1 == null && uri2 == null) {
            return true;
        }
        if (uri1 == null || uri2 == null) {
            return false;
        }

        try {
            URI normalizedUri1 = normalizePortNumbersInUri(uri1);
            URI normalizedUri2 = normalizePortNumbersInUri(uri2);
            boolean eq = normalizedUri1.equals(normalizedUri2);
            return eq;
        } catch (URISyntaxException use) {
            logger.error("Cannot compare 2 URIs.", use);
            return false;
        }
    }

    /**
     * Normalizes a URI. If it contains the default port for the used scheme, the method replaces the port with "default".
     *
     * @param uri
     *            The URI to normalize.
     *
     * @return A normalized URI.
     *
     * @throws URISyntaxException
     *             If a URI cannot be created because of wrong syntax.
     */
    private static URI normalizePortNumbersInUri(final URI uri) throws URISyntaxException {
        int port = uri.getPort();
        final String scheme = uri.getScheme();

        if (SCHEME_HTTP.equals(scheme) && port == DEFAULT_HTTP_PORT) {
            port = -1;
        }
        if (SCHEME_HTTPS.equals(scheme) && port == DEFAULT_HTTPS_PORT) {
            port = -1;
        }

        final URI result = new URI(scheme, uri.getUserInfo(), uri.getHost(), port, uri.getPath(), uri.getQuery(), uri.getFragment());
        return result;
    }
}

Output:
【漏洞类型】随机字符串生成问题
【严重性】Low
【漏洞摘要】原始代码中使用 `java.util.UUID.randomUUID().toString().replace("-", "").substring(0, size)` 生成随机字符串。虽然这在大多数情况下是安全的，但在某些情况下，可能会导致生成的随机字符串长度不足。修复代码通过循环调用 `java.util.UUID.randomUUID().toString().replace("-", "")` 来确保生成的随机字符串长度至少为指定的大小。
【关键代码模式】`java.util.UUID.randomUUID().toString().replace("-", "")`、`substring(0, size)`、循环生成随机字符串。
【修复方法说明】通过循环调用 `java.util.UUID.randomUUID().toString().replace("-", "")` 确保生成的随机字符串长度至少为指定的大小，从而避免生成的随机字符串长度不足的问题。


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：
modules/apps/journal/journal-taglib/src/main/resources/META-INF/resources/journal_article/page.jsp
### 代码内容：
<%--

--%>

<%@ include file="/journal_article/init.jsp" %>

<liferay-util:dynamic-include key="com.liferay.journal.taglib#/journal_article/page.jsp#pre" />

<%
JournalArticleDisplay articleDisplay = (JournalArticleDisplay)request.getAttribute("liferay-journal:journal-article:articleDisplay");
boolean showTitle = GetterUtil.getBoolean((String)request.getAttribute("liferay-journal:journal-article:showTitle"));
String wrapperCssClass = (String)request.getAttribute("liferay-journal:journal-article:wrapperCssClass");
%>

<div class="journal-content-article <%= Validator.isNotNull(wrapperCssClass) ? wrapperCssClass : StringPool.BLANK %>" data-analytics-asset-id="<%= articleDisplay.getArticleId() %>" data-analytics-asset-title="<%= HtmlUtil.escapeAttribute(articleDisplay.getTitle()) %>" data-analytics-asset-type="web-content">
	<c:if test="<%= showTitle %>">
		<%= articleDisplay.getTitle() %>
	</c:if>

	<%= articleDisplay.getContent() %>
</div>

<%
List<AssetTag> assetTags = AssetTagLocalServiceUtil.getTags(JournalArticleDisplay.class.getName(), articleDisplay.getResourcePrimKey());

PortalUtil.setPageKeywords(ListUtil.toString(assetTags, AssetTag.NAME_ACCESSOR), request);
%>

<liferay-util:dynamic-include key="com.liferay.journal.taglib#/journal_article/page.jsp#post" />

Output:
【漏洞类型】跨站脚本攻击（XSS）
【严重性】High
【漏洞摘要】此代码在显示JournalArticle的Title时存在跨站脚本攻击（XSS）漏洞。具体表现为，未对`articleDisplay.getTitle()`进行HTML转义，直接输出到页面上，允许恶意用户在Title中注入恶意脚本。问题行是`<%= articleDisplay.getTitle() %>`.
【关键代码模式】相关的代码模式包括未使用HTML转义函数直接输出用户输入或可控制数据。关键函数或关键词包括`HtmlUtil.escapeAttribute()`（用于转义属性值）和未使用的`HtmlUtil.escape()`（用于转义HTML内容）。
【修复方法说明】修复方法通过使用`HtmlUtil.escape(articleDisplay.getTitle())`对Title进行HTML转义，防止恶意脚本被执行。适用的最佳实践是确保所有用户输入或可控制的输出数据在输出到页面之前都经过适当的安全处理，如HTML转义。


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：
ratpack-core/src/main/java/ratpack/server/internal/NettyHandlerAdapter.java
### 代码内容：
package ratpack.server.internal;

import io.netty.buffer.ByteBuf;
import io.netty.buffer.ByteBufUtil;
import io.netty.buffer.Unpooled;
import io.netty.channel.*;
import io.netty.handler.codec.http.*;
import io.netty.handler.ssl.SslHandler;
import io.netty.handler.ssl.SslHandshakeCompletionEvent;
import io.netty.handler.timeout.IdleStateEvent;
import io.netty.util.AttributeKey;
import io.netty.util.CharsetUtil;
import io.netty.util.ReferenceCountUtil;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import ratpack.exec.ExecController;
import ratpack.func.Action;
import ratpack.handling.Handler;
import ratpack.handling.Handlers;
import ratpack.handling.internal.ChainHandler;
import ratpack.handling.internal.DefaultContext;
import ratpack.handling.internal.DescribingHandler;
import ratpack.handling.internal.DescribingHandlers;
import ratpack.http.Headers;
import ratpack.http.MutableHeaders;
import ratpack.http.Response;
import ratpack.http.internal.*;
import ratpack.registry.Registry;
import ratpack.render.internal.DefaultRenderController;
import ratpack.server.ServerConfig;

import javax.net.ssl.SSLEngine;
import javax.net.ssl.SSLPeerUnverifiedException;
import javax.security.cert.X509Certificate;
import java.io.IOException;
import java.net.InetSocketAddress;
import java.nio.CharBuffer;
import java.nio.channels.ClosedChannelException;
import java.time.Clock;
import java.util.concurrent.atomic.AtomicBoolean;

@ChannelHandler.Sharable
public class NettyHandlerAdapter extends ChannelInboundHandlerAdapter {

  private static final AttributeKey<Action<Object>> CHANNEL_SUBSCRIBER_ATTRIBUTE_KEY = AttributeKey.valueOf(NettyHandlerAdapter.class, "subscriber");
  private static final AttributeKey<RequestBodyAccumulator> BODY_ACCUMULATOR_KEY = AttributeKey.valueOf(NettyHandlerAdapter.class, "requestBody");
  private static final AttributeKey<X509Certificate> CLIENT_CERT_KEY = AttributeKey.valueOf(NettyHandlerAdapter.class, "principal");

  private final static Logger LOGGER = LoggerFactory.getLogger(NettyHandlerAdapter.class);

  private final Handler[] handlers;

  private final DefaultContext.ApplicationConstants applicationConstants;

  private final Registry serverRegistry;
  private final boolean development;
  private final Clock clock;

  public NettyHandlerAdapter(Registry serverRegistry, Handler handler) throws Exception {
    this.handlers = ChainHandler.unpack(handler);
    this.serverRegistry = serverRegistry;
    this.applicationConstants = new DefaultContext.ApplicationConstants(this.serverRegistry, new DefaultRenderController(), serverRegistry.get(ExecController.class), Handlers.notFound());
    this.development = serverRegistry.get(ServerConfig.class).isDevelopment();
    this.clock = serverRegistry.get(Clock.class);
  }

  @Override
  public void channelActive(ChannelHandlerContext ctx) throws Exception {
    ctx.read();
    super.channelActive(ctx);
  }

  @Override
  public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {
    if (msg instanceof HttpRequest) {
      newRequest(ctx, (HttpRequest) msg);
    } else if (msg instanceof HttpContent) {
      ((HttpContent) msg).touch();
      RequestBodyAccumulator bodyAccumulator = ctx.channel().attr(BODY_ACCUMULATOR_KEY).get();
      if (bodyAccumulator == null) {
        ((HttpContent) msg).release();
      } else {
        bodyAccumulator.add((HttpContent) msg);
      }

      // Read for the next request proactively so that we
      // detect if the client closes the connection.
      if (msg instanceof LastHttpContent) {
        ctx.channel().read();
      }
    } else {
      Action<Object> subscriber = ctx.channel().attr(CHANNEL_SUBSCRIBER_ATTRIBUTE_KEY).get();
      if (subscriber == null) {
        super.channelRead(ctx, ReferenceCountUtil.touch(msg));
      } else {
        subscriber.execute(ReferenceCountUtil.touch(msg));
      }
    }
  }

  private void newRequest(ChannelHandlerContext ctx, HttpRequest nettyRequest) throws Exception {
    if (!nettyRequest.decoderResult().isSuccess()) {
      LOGGER.debug("Failed to decode HTTP request.", nettyRequest.decoderResult().cause());
      sendError(ctx, HttpResponseStatus.BAD_REQUEST);
      return;
    }

    Headers requestHeaders = new NettyHeadersBackedHeaders(nettyRequest.headers());

    //Find the content length we will use this as an indicator of a body
    Long contentLength = HttpUtil.getContentLength(nettyRequest, -1L);
    String transferEncoding = requestHeaders.get(HttpHeaderNames.TRANSFER_ENCODING);

    //If there is a content length or transfer encoding that indicates there is a body
    boolean hasBody = (contentLength > 0) || (transferEncoding != null);

    RequestBody requestBody = hasBody ? new RequestBody(contentLength, nettyRequest, ctx) : null;

    Channel channel = ctx.channel();

    if (requestBody != null) {
      channel.attr(BODY_ACCUMULATOR_KEY).set(requestBody);
    }
    InetSocketAddress remoteAddress = (InetSocketAddress) channel.remoteAddress();
    InetSocketAddress socketAddress = (InetSocketAddress) channel.localAddress();

    ConnectionIdleTimeout connectionIdleTimeout = ConnectionIdleTimeout.of(channel);

    DefaultRequest request = new DefaultRequest(
      clock.instant(),
      requestHeaders,
      nettyRequest.method(),
      nettyRequest.protocolVersion(),
      nettyRequest.uri(),
      remoteAddress,
      socketAddress,
      serverRegistry.get(ServerConfig.class),
      requestBody,
      connectionIdleTimeout,
      channel.attr(CLIENT_CERT_KEY).get()
    );

    HttpHeaders nettyHeaders = new DefaultHttpHeaders(false);
    MutableHeaders responseHeaders = new NettyHeadersBackedMutableHeaders(nettyHeaders);
    AtomicBoolean transmitted = new AtomicBoolean(false);

    DefaultResponseTransmitter responseTransmitter = new DefaultResponseTransmitter(transmitted, channel, clock, nettyRequest, request, nettyHeaders, requestBody);

    ctx.channel().attr(DefaultResponseTransmitter.ATTRIBUTE_KEY).set(responseTransmitter);

    Action<Action<Object>> subscribeHandler = thing -> {
      transmitted.set(true);
      ctx.channel().attr(CHANNEL_SUBSCRIBER_ATTRIBUTE_KEY).set(thing);
    };

    DefaultContext.RequestConstants requestConstants = new DefaultContext.RequestConstants(
      applicationConstants,
      request,
      channel,
      responseTransmitter,
      subscribeHandler
    );

    Response response = new DefaultResponse(responseHeaders, ctx.alloc(), responseTransmitter);
    requestConstants.response = response;

    DefaultContext.start(channel.eventLoop(), requestConstants, serverRegistry, handlers, execution -> {
      if (!transmitted.get()) {
        Handler lastHandler = requestConstants.handler;
        StringBuilder description = new StringBuilder();
        description
          .append("No response sent for ")
          .append(request.getMethod().getName())
          .append(" request to ")
          .append(request.getUri());

        if (lastHandler != null) {
          description.append(" (last handler: ");

          if (lastHandler instanceof DescribingHandler) {
            ((DescribingHandler) lastHandler).describeTo(description);
          } else {
            DescribingHandlers.describeTo(lastHandler, description);
          }
          description.append(")");
        }

        String message = description.toString();
        LOGGER.warn(message);

        response.getHeaders().clear();

        ByteBuf body;
        if (development) {
          CharBuffer charBuffer = CharBuffer.wrap(message);
          body = ByteBufUtil.encodeString(ctx.alloc(), charBuffer, CharsetUtil.UTF_8);
          response.contentType(HttpHeaderConstants.PLAIN_TEXT_UTF8);
        } else {
          body = Unpooled.EMPTY_BUFFER;
        }

        response.getHeaders().set(HttpHeaderConstants.CONTENT_LENGTH, body.readableBytes());
        responseTransmitter.transmit(HttpResponseStatus.INTERNAL_SERVER_ERROR, body);
      }
    });
  }

  @Override
  public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) throws Exception {
    if (!isIgnorableException(cause)) {
      LOGGER.error("", cause);
      if (ctx.channel().isActive()) {
        sendError(ctx, HttpResponseStatus.INTERNAL_SERVER_ERROR);
      }
    }
  }

  @Override
  public void userEventTriggered(ChannelHandlerContext ctx, Object evt) throws Exception {
    if (evt instanceof IdleStateEvent) {
      ConnectionClosureReason.setIdle(ctx.channel());
      ctx.close();
    }
    if (evt instanceof SslHandshakeCompletionEvent && ((SslHandshakeCompletionEvent) evt).isSuccess()) {
      SSLEngine engine = ctx.pipeline().get(SslHandler.class).engine();
      if (engine.getWantClientAuth() || engine.getNeedClientAuth()) {
        try {
          X509Certificate clientCert = engine.getSession().getPeerCertificateChain()[0];
          ctx.channel().attr(CLIENT_CERT_KEY).set(clientCert);
        } catch (SSLPeerUnverifiedException ignore) {
          // ignore - there is no way to avoid this exception that I can determine
        }
      }
    }

    super.userEventTriggered(ctx, evt);
  }

  @Override
  public void channelWritabilityChanged(ChannelHandlerContext ctx) throws Exception {
    DefaultResponseTransmitter responseTransmitter = ctx.channel().attr(DefaultResponseTransmitter.ATTRIBUTE_KEY).get();
    if (responseTransmitter != null) {
      responseTransmitter.writabilityChanged();
    }
  }

  private static boolean isIgnorableException(Throwable throwable) {
    if (throwable instanceof ClosedChannelException) {
      return true;
    } else if (throwable instanceof IOException) {
      // There really does not seem to be a better way of detecting this kind of exception
      String message = throwable.getMessage();
      return message != null && message.endsWith("Connection reset by peer");
    } else {
      return false;
    }
  }

  private static void sendError(ChannelHandlerContext ctx, HttpResponseStatus status) {
    FullHttpResponse response = new DefaultFullHttpResponse(
      HttpVersion.HTTP_1_1, status, Unpooled.copiedBuffer("Failure: " + status.toString() + "\r\n", CharsetUtil.UTF_8));
    response.headers().set(HttpHeaderConstants.CONTENT_TYPE, HttpHeaderConstants.PLAIN_TEXT_UTF8);

    // Close the connection as soon as the error message is sent.
    ctx.writeAndFlush(response).addListener(ChannelFutureListener.CLOSE);
  }
}

Output:
【漏洞类型】HTTP头验证不足
【严重性】中等
【漏洞摘要】代码中未对HTTP请求头进行严格的验证。在`newRequest`方法中，`HttpUtil.getContentLength(nettyRequest, -1L)`和`requestHeaders.get(HttpHeaderNames.TRANSFER_ENCODING)`直接从请求头中获取内容长度和传输编码，并用于判断请求体是否存在。如果请求头中的这些值被恶意篡改，可能会导致意外的行为或潜在的安全问题。例如，如果攻击者设置了一个过大的内容长度值，可能会导致服务器资源耗尽或内存溢出。
【关键代码模式】
- `HttpUtil.getContentLength`
- `requestHeaders.get(HttpHeaderNames.TRANSFER_ENCODING)`
- `requestHeaders`的未验证使用
【修复方法说明】修复方法通过启用HTTP头验证来解决问题，确保请求头中的内容长度和传输编码是有效的。这有助于防止恶意篡改请求头导致的安全问题。


Instruction: 作为 Java 安全专家，检测此代码中的安全漏洞：

Output: 请提供原始代码和修复的代码（Patch），以便我能够进行详细的安全漏洞分析。