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1)下载与tomcat对应版本的tomcat-juli.jar 和 tomcat-juli-adapters.jar
http://archive.apache.org/dist/logging/log4j/1.2.17/
http://tomcat.apache.org/download-70.cgi
tomcat-juli-adapters.jar放入{$CATALINA_HOME}/lib
用新下载的tomcat-juli.jar替换掉$CATALINA_HOME/bin/中的tomcat-juli.jar;(下载的tomcat-juli.jar包含了所有Commons Logging实现,能够发现log4j和配置)
2)下载 log4j-1.2.17.jar放到 {$CATALINA_HOME}/lib
http://archive.apache.org/dist/logging/log4j/1.2.17/
3)删除$CATALINA_BASE/conf/logging.properties
4)修改 Tomcat 的 conf/context.xml 文件,将改为
5).将自己的log4j.properties放入{$CATALINA_HOME}/lib
### set log levels ###
log4j.rootLogger = INFO,A,B,CONSOLE
### 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
### 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
### 保存异常信息到控制台 ###
log4j.appender.CONSOLE = org.apache.log4j.ConsoleAppender
log4j.appender.CONSOLE.Encoding = UTF-8
log4j.appender.CONSOLE.Threshold = ERROR
log4j.appender.CONSOLE.layout = org.apache.log4j.PatternLayout
log4j.appender.CONSOLE.layout.ConversionPattern = %-d{yyyy-MM-dd HH:mm:ss} [ %l:%c:%t:%r ] - [ %p ] %m%n 6)重启tomcat
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