LogBack sl4j 通过MDC实现日志记录区分用户Session[以Spring mvc为例]

1.首先实现一个interceptor,在请求开始的时候MDC put一个Session标志,interceptor结束的时候remove掉

 

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;

import org.slf4j.MDC;

import org.springframework.web.servlet.ModelAndView;

import org.springframework.web.servlet.handler.HandlerInterceptorAdapter;

public class SessionInterceptor extends HandlerInterceptorAdapter {

    /**

     * 会话ID

     */

    private final static String SESSION_KEY = "sessionId";



    @Override

    public void afterCompletion(HttpServletRequest arg0,

            HttpServletResponse arg1, Object arg2, Exception arg3)

            throws Exception {



        // 删除

        MDC. remove(SESSION_KEY);

    }



    @Override

    public void postHandle(HttpServletRequest arg0, HttpServletResponse arg1,

            Object arg2, ModelAndView arg3) throws Exception {

    }



    @Override

    public boolean preHandle(HttpServletRequest request,

            HttpServletResponse response, Object handler) throws Exception {



        // 放SessionId

        String token = TokenUtil. java.util.UUID.randomUUID().toString();

        MDC. put(SESSION_KEY, token);



        return true;

    }

}

2.然后在logback相应的配置中加上 seesionId的配置就可以了

 

<?xml version="1.0" encoding="UTF-8"?>

<configuration>

        <property name="log.base" value="./log/logback" />



        <appender name="stdout" class="ch.qos.logback.core.ConsoleAppender">

               <encoder>

                      <pattern> %X{sessionId} %date [%thread] %-5level %logger{80} - %msg%n

                      </pattern>

               </encoder>

        </appender>



        <appender name="logfile"

               class="ch.qos.logback.core.rolling.RollingFileAppender">

               <File> ${log.base}.log</File >

               <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">

                      <FileNamePattern> ${log.base}.%d{yyyy -MM-dd}.log.zip </FileNamePattern>

               </rollingPolicy>

               <encoder>

                      <pattern> %X{sessionId} %date [%thread] %-5level %logger{80} - %msg%n

                      </pattern>

               </encoder>

        </appender>

        <logger name="com.sample" level="TRACE" />

        <root>

               <level value="INFO" />

               <appender-ref ref="stdout" />

               <appender-ref ref="logfile" />

        </root>

</configuration>

3.日志打出的时候就会有可以标识区分不同客户端的请求了,用前面不同的token区分

e6668b68-ee47-4cde-b673-25ed9bb74f1e 2014-04-09 16:31:14,579 [qtp14850080-27] INFO  o.c.a.f.i.AuthInterceptor - GET:/project

c3b84462-81c6-49f7-923b-d8ba48c53c07 2014-04-09 16:31:31,295 [qtp14850080-27] INFO  o.c.a.f.i.AuthInterceptor - GET:/feedbacks

b0e0f1fe-f30a-42b2-a103-e70a108561b7 2014-04-09 16:31:32,254 [qtp14850080-22] INFO  o.c.a.f.i.AuthInterceptor - GET:/feedbacks

a58ed619-c2e0-4b71-9c45-995a78c1b602 2014-04-09 16:31:42,788 [qtp14850080-29] INFO  o.c.a.f.i.AuthInterceptor - GET:/project

70de174a-5a05-41c6-a8b4-f17fcd33be5c 2014-04-09 16:31:43,537 [qtp14850080-22] INFO  o.c.a.f.i.AuthInterceptor - GET:/project

f3efb2d4-f361-4c6b-bab6-16c8476c8dd0 2014-04-09 16:31:47,157 [qtp14850080-26] INFO  o.c.a.f.i.AuthInterceptor - POST:/project

f3efb2d4-f361-4c6b-bab6-16c8476c8dd0 2014-04-09 16:31:47,161 [qtp14850080-26] INFO  o.c.a.f.i.ProjectController - >> create() > GOT PARAMS 'Project [name=url, abstractContent=a, token=null]','(POST /project)@12571381 org.eclipse.jetty.server.Request@bfd2f5'

参考: http://logback.qos.ch/manual/mdc.html#autoMDC