/*
* Copyright 2010 Alibaba Group Holding Limited.
* All rights reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.alibaba.citrus.webx.servlet;
import java.io.IOException;
import javax.servlet.FilterChain;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import com.alibaba.citrus.webx.util.SetLoggingContextHelper;
/**
* ͨ��SLF4J MDC����¼�û����������Ϣ��
* <p>
* ������log4j�������ļ��У���������pattern layout��
* </p>
*
* <pre>
* <layout class="org.apache.log4j.PatternLayout">
* <param name="ConversionPattern" value="%-4r [%d{yyyy-MM-dd HH:mm:ss}] - %X{remoteAddr} %X{requestURI} %X{referrer} %X{userAgent} %X{cookie.����} - %m%n" />
* </layout>
* </pre>
* <p>
* ������logback�汾��
* </p>
*
* <pre>
* <layout class="ch.qos.logback.classic.PatternLayout">
* <pattern>%-4r [%d{yyyy-MM-dd HH:mm:ss}] - %X{remoteAddr} %X{requestURI} %X{referrer} %X{userAgent} %X{cookie.����} - %m%n</pattern>
* </layout>
* </pre>
*
* @see com.alibaba.citrus.webx.util.SetLoggingContextHelper
* @author Michael Zhou
*/
public class SetLoggingContextFilter extends FilterBean {
@Override
public void doFilter(HttpServletRequest request, HttpServletResponse response, FilterChain chain)
throws IOException, ServletException {
SetLoggingContextHelper helper = new SetLoggingContextHelper(request);
try {
helper.setLoggingContext();
chain.doFilter(request, response);
} finally {
helper.clearLoggingContext();
}
}
}