1.导入log4j-1.2.17.jar包

2.在web项目的web.xml中加入以下配置

　　<!-- 配置Log4j -->

　　<listener>

　　<listener-class>org.springframework.web.util.Log4jConfigListener</listener-class>

　　</listener>

　　<context-param>

　　<param-name>log4jConfigLocation</param-name>

　　<param-value>classpath:log4j.properties</param-value>

　　</context-param>

　　<context-param>

　　<param-name>webAppRootKey</param-name>

　　<param-value>webApp.root</param-value>

　　</context-param>

　　<!-- 表示每个3秒动态扫描log4j.properties配置文件的变化 -->

　　<context-param>

　　<param-name>log4jRefreshInterval</param-name>

　　<param-value>3000</param-value>

　　</context-param>

　　<!-- 配置Log4j end -->

3.在项目的src目录下创建log4j的配置文件log4j.properties并写入配置

### set log levels ###

log4j.rootLogger = DEBUG,stdout

### \u8F93\u51FA\u5230\u63A7\u5236\u53F0 ###

log4j.appender.stdout = org.apache.log4j.ConsoleAppender

log4j.appender.stdout.Target = System.out

log4j.appender.stdout.layout = org.apache.log4j.PatternLayout

log4j.appender.stdout.layout.ConversionPattern = [%-5p] %d{yyyy-MM-dd HH:mm:ss,SSS} method:%l%n%m%n

### sql ###

log4j.logger.java.sql.Connection=DEBUG

log4j.logger.java.sql.PreparedStatement=DEBUG

log4j.logger.java.sql.ResultSet=DEBUG

log4j.logger.com.ibatis=DEBUG

log4j.logger.com.ibatis.common.jdbc.SimpleDataSource=DEBUG

log4j.logger.com.ibatis.common.jdbc.ScriptRunner=DEBUG

log4j.logger.com.ibatis.sqlmap.engine.impl.SqlMapClientDelegate=DEBUG

### file ###

log4j.appender.file = org.apache.log4j.RollingFileAppender

log4j.appender.file.Append=true

log4j.appender.file.MaxFileSize=5000KB

log4j.appender.file.MaxBackupIndex=10

log4j.appender.file.layout = org.apache.log4j.PatternLayout

log4j.appender.file.layout.ConversionPattern =%d{yyyyMMdd HH\:mm\:ss,SSS} %5p [%c] %m%n

log4j.appender.file.encoding=UTF-8

4.创建测试类

package com.egiupt.webService;

import javax.servlet.http.HttpSession;

import org.apache.log4j.Logger;

import org.springframework.stereotype.Controller;

import org.springframework.web.bind.annotation.RequestMapping;

import org.springframework.web.bind.annotation.ResponseBody;

@Controller

public class Log4jTest {

public static Logger logger=Logger.getLogger(Log4jTest.class);

@ResponseBody

@RequestMapping("/log4j")

public void login(HttpSession session){

logger.info("请求登录");

logger.debug("debug");

logger.warn("warn");

}

}

6.运行项目发送请求后可以再控制台看到