Tomcat 6.0 Logger的配置

zhaolu

　　*author 谭剑
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在Apache官方网站上已声明,对于Tomcat6.0的版本,把<logger>元素嵌套在<Context>元素中不再合法.
原文如下:
An important consequence for Tomcat 6.0 is that the <Logger> element found in previous versions to create a localhost_log is no longer a valid nested element of <Context>. Instead, the default Tomcat configuration will use java.util.logging. If the developer wishes to collect detailed internal Tomcat logging (i.e what is happening within the Tomcat engine), then they should configure a logging system such as java.util.logging or log4j as detailed next.
　　详细见(http://tomcat.apache.org/tomcat-6.0-doc/logging.html).
　　但是要使用tomcat的logger也并非不可能,只是有点繁琐.
　　
**  步骤如下:
　　1.下载log4j.jar(版本1.2.15, 大小3.51MB)
地址:http://www.apache.org/dist/logging/log4j/1.2.15/apache-log4j-1.2.15.zip
　　2.创建log4j.properties文件,内容如下:
　　(1)非官网的配置
#----------------------------------
log4j.rootLogger=ERROR,R
　　log4j.appender.CONSOLE=org.apache.log4j.ConsoleAppender
log4j.appender.CONSOLE.layout=org.apache.log4j.PatternLayout
log4j.appender.CONSOLE.layout.ConversionPattern=[%p]%t-%c-%m%n
　　log4j.appender.R=org.apache.log4j.RollingFileAppender
log4j.appender.R.File=${catalina.home}/logs/日志文件名.log
log4j.appender.R.MaxFileSize=10MB
log4j.appender.R.MaxBackupIndex=2
log4j.appender.R.layout=org.apache.log4j.PatternLayout
log4j.appender.R.layout.ConversionPattern=[%p]%t-%c-%m%n
　　log4j.logger.org.apache.catalina=INFO,R,CONSOLE
#--------------------------------------
　　(2)官网的配置范例
#---------------------------------
log4j.rootLogger=debug, R
log4j.appender.R=org.apache.log4j.RollingFileAppender
log4j.appender.R.File=${catalina.home}/logs/tomcat.log
log4j.appender.R.MaxFileSize=10MB
log4j.appender.R.MaxBackupIndex=10
log4j.appender.R.layout=org.apache.log4j.PatternLayout
log4j.appender.R.layout.ConversionPattern=%p %t %c - %m%n
log4j.logger.org.apache.catalina=DEBUG, R
#--------------------------------------
　　
3.下载两个jar文件,分别是"tomcat-juli-adapters.jar(大小22.4KB)"和"tomcat-juli.jar(大小59.3KB)".
地址:http://www.apache.org/dist/tomcat/tomcat-6/v6.0.20/bin/extras/tomcat-juli-adapters.jar
地址:http://www.apache.org/dist/tomcat/tomcat-6/v6.0.20/bin/extras/tomcat-juli.jar
　　
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**  具体操作步骤:
1.将[tomcat-juli-adapters.jar],[log4j-1.2.15.jar]和[log4j.properties]这三个文件放到 $CATALINA_HOME/lib下.
2.将[tomcat-juli.jar]放到 $CATALINA_HOME/bin下.
　　启动Tomcat,然后就可以在 $CATALINA_HOME/logs下看到名为XXX.log的日志文件了.
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**  附:Apache官方网站的英文说明:
　　
1.Create a file called log4j.properties with the following content and save it into $CATALINA_HOME/lib.
  
             log4j.rootLogger=debug, R
            log4j.appender.R=org.apache.log4j.RollingFileAppender
            log4j.appender.R.File=${catalina.home}/logs/tomcat.log
            log4j.appender.R.MaxFileSize=10MB
            log4j.appender.R.MaxBackupIndex=10
            log4j.appender.R.layout=org.apache.log4j.PatternLayout
            log4j.appender.R.layout.ConversionPattern=%p %t %c - %m%n
            log4j.logger.org.apache.catalina=DEBUG, R
　　2.Download Log4J (v1.2 or later) and place the log4j jar in $CATALINA_HOME/lib.
3.Build or download the additional logging components. See the extras components documentation for details.
4.Replace $CATALINA_HOME/bin/tomcat-juli.jar with output/extras/tomcat-juli.jar.
5.Place output/extras/tomcat-juli-adapters.jar in $CATALINA_HOME/lib.
6.Start Tomcat
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