log4j基础配置

1、加入log4j的jar包
    log4j-*.jar

2、配置log4j的属性文件
    log4j.rootLogger=INFO,console
 
    log4j.appender.console=org.apache.log4j.ConsoleAppender
 
    log4j.appender.console.layout=org.apache.log4j.PatternLayout
 
    log4j.appender.console.layout.ConversionPattern=%d %p [%c] - %m%n

3、在web.xml中加载配置文件,以及监听器
    <context-param>
 	<param-name>log4jConfigLocation</param-name>
 	<param-value>classpath:/log4j.properties</param-value>
     </context-param>
     <listener>
 	<listener-class>org.springframework.web.util.Log4jConfigListener</listener-class>
     </listener>


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