tomcat7 用log4j记录日志

1.下载 log4j-1.2.17.jar放到  {$CATALINA_HOME}/lib

http://archive.apache.org/dist/logging/log4j/1.2.17/

2.下载tomcat-juli.jar、tomcat-juli-adapters.jar作为tomcat的外部组件，

tomcat-juli-adapters.jar放入{$CATALINA_HOME}/lib

tomcat-juli.jar放入 {$CATALINA_HOME}/bin

http://tomcat.apache.org/download-70.cgi

3.删除 {$CATALINA_HOME}/conf/logging.properties

4.将自己的log4j.properties放入{$CATALINA_HOME}/lib

### set log levels ###
log4j.rootLogger = INFO,A,B



### 输出到日志文件 ###
log4j.appender.A = org.apache.log4j.DailyRollingFileAppender
log4j.appender.A.File = ${catalina.home}/logs/interface.log
log4j.appender.A.Append = true
log4j.appender.A.Threshold = INFO  
log4j.appender.A.layout = org.apache.log4j.PatternLayout
log4j.appender.A.layout.ConversionPattern = %-d{yyyy-MM-dd HH:mm:ss}  [ %t:%r ] - [ %p ]  %m%n
log4j.appender.A.MaxBackupIndex=5

### 保存异常信息到单独文件 ###
log4j.appender.B = org.apache.log4j.DailyRollingFileAppender
log4j.appender.B.File = ${catalina.home}/logs/error.log  
log4j.appender.B.Append = true
log4j.appender.B.Threshold = ERROR  
log4j.appender.B.layout = org.apache.log4j.PatternLayout
log4j.appender.B.layout.ConversionPattern = %-d{yyyy-MM-dd HH:mm:ss}  [ %l:%c:%t:%r ] - [ %p ]  %m%n
log4j.appender.B.MaxBackupIndex=5

5.启动tomcat查看日志是否生效