spring mvc 配置 log4j

spring mvc 配置 log4j

1. spring mvc 配置 log4j 注意事项：
   1). 如果 log4j.properties 在 src 目录，则不需要配置 Log4jConfigListener。
   2). 如果 log4j.properties 不在 src 目录下，则需要配置 Log4jConfigListener。

2. 具体代码如下：
   1). controller 层代码如下:

   package com.test.controller;

   import javax.servlet.http.HttpServletRequest;
   import org.apache.log4j.Logger;
   import org.springframework.stereotype.Controller;
   import org.springframework.web.bind.annotation.RequestMapping;
   import org.springframework.web.servlet.ModelAndView;

   @RequestMapping(“/hello”)
   @Controller
   public class Log4jController {

   private static Logger logger = Logger.getLogger(Log4jController.class);
   
   @RequestMapping("/hello")
   public ModelAndView log4j(HttpServletRequest request){
       ModelAndView model = new ModelAndView("hello");
       model.addObject("msg", "this is log4j record...");
       logger.info("my first log for java ...");
       return model;
   }
   

   }

3. log4j.properties 内容如下：

    # Set root logger level to DEBUG and its appender to A1 and file.
    log4j.rootLogger=DEBUG, file, A1
    log4j.category.org.springframework = warn
    # file is set to a DailyRollingFileAppender
    log4j.appender.file=org.apache.log4j.DailyRollingFileAppender
    log4j.appender.file.File=test.log
    log4j.appender.file.Append=true
    log4j.appender.file.layout=org.apache.log4j.PatternLayout
    log4j.appender.file.layout.ConversionPattern=[test] [%d{yyyy-mm-dd HH:MM:ss}] [%-5p] %l - %m%n
    # A1 is set to be a ConsoleAppender.
    log4j.appender.A1=org.apache.log4j.ConsoleAppender
    log4j.appender.A1.layout=org.apache.log4j.PatternLayout
    log4j.appender.A1.layout.ConversionPattern=[test] [%d{yyyy-mm-dd HH:MM:ss}] [%-5p] %l - %m%n

1. web.xml 文件如下：

    <?xml version="1.0" encoding="UTF-8"?>
    <web-app id="WebApp_ID" version="3.0" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd">

        <servlet>
            <servlet-name>spring-web</servlet-name>
            <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
            <init-param>
                <param-name>contextConfigLocation</param-name>
                <param-value>classpath:applicationcontext.xml</param-value>
            </init-param>
            <load-on-startup>1</load-on-startup>
        </servlet>

        <servlet-mapping>
            <servlet-name>spring-web</servlet-name>
            <url-pattern>*.do</url-pattern>
        </servlet-mapping>

        <!-- if log4j.properties in src dir, Log4jConfigListener don't need to config.
             otherwise, if log4j.properties don't in src dir, Log4jConfigListener must be config. -->
        <context-param>
            <param-name>log4jConfigLocation</param-name>
            <param-value>/ui/log4j.properties</param-value>
        </context-param>
        <listener>  
        <listener-class>org.springframework.web.util.Log4jConfigListener</listener-class>  
        </listener>

    </web-app>

1. applicationcontext.xml 内容如下：

    <?xml version="1.0" encoding="UTF-8"?>
        <beans xmlns="http://www.springframework.org/schema/beans"
            xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
            xmlns:mvc="http://www.springframework.org/schema/mvc"
            xmlns:tx="http://www.springframework.org/schema/tx" 
            xmlns:jee="http://www.springframework.org/schema/jee"
            xmlns:aop="http://www.springframework.org/schema/aop" 
            xmlns:context="http://www.springframework.org/schema/context"
            xmlns:task="http://www.springframework.org/schema/task"
            xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.0.xsd
            http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd
            http://www.springframework.org/schema/jee http://www.springframework.org/schema/jee/spring-jee-4.0.xsd
            http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd
            http://www.springframework.org/schema/tx  http://www.springframework.org/schema/tx/spring-tx-4.0.xsd
            http://www.springframework.org/schema/aop  http://www.springframework.org/schema/aop/spring-aop-4.0.xsd 
            http://www.springframework.org/schema/task http://www.springframework.org/schema/task/spring-task-4.0.xsd">

            <context:component-scan base-package="com.test.controller"></context:component-scan>

            <bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
                <property name="prefix" value="/ui/" />
                <property name="suffix" value = ".jsp" />
                <property name="order" value = "1" />
            </bean>

        </beans>

1. pom.xml 文件如下：

 <!-- https://mvnrepository.com/artifact/log4j/log4j -->
    <dependency>
        <groupId>log4j</groupId>
        <artifactId>log4j</artifactId>
        <version>1.2.17</version>
    </dependency>

1. jsp 页面如下：

<%@ page language="java" contentType="text/html; charset=utf-8"
    pageEncoding="utf-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>Insert title here</title>
</head>
<body>
    <div>tips:${msg}</div>
</body>
</html>