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	<title>lizongbo at 618119.com &#187; log4j</title>
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	<description>工作,生活,Android,前端,Linode,Ubuntu,nginx,java,apache,tomcat,Resin,mina,Hessian,XMPP,RPC</description>
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		<title>Tomcat遇到&#8221;Error listenerStart&#8221;或&#8221;Error filterStart&#8221;问题且无详细日志时的log配置.</title>
		<link>http://618119.com/archives/2007/12/04/37.html</link>
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		<pubDate>Tue, 04 Dec 2007 07:44:35 +0000</pubDate>
		<dc:creator>lizongbo</dc:creator>
				<category><![CDATA[Java]]></category>
		<category><![CDATA[Tomcat]]></category>
		<category><![CDATA[Apache Tomcat]]></category>
		<category><![CDATA[log4j]]></category>

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		<description><![CDATA[昨天部署web应用到Tomcat之后,无法成功启动,并且控制台没有详细的错误信息, 顶多就两行提示信息,例如: 严重: Error listenerStart 严重: Context [/lizongbo] startup failed due to previous errors 或者 严重: Error filterStart org.apache.catalina.core.StandardContext start 严重: Context startup failed due to previous errors 查找logs目录下的信息,除了这两句话,也没别的辅助内容. 给查错带来了困难,在这种情况下,是因为Tomcat自身的默认日志没有将一些错误信息输出到控制台或文件, 这个时候则需要配置Tomcat自身的log,启用详细的调试日志. 在Tomcat 5.5和Tomcat 6.0中的配置基本一样,只是相关文件放的目录有所不同. 首先需要准备的文件为: 1.log4j.jar , 下载地址 : http://www.apache.org/dist/logging/log4j/1.2.15/apache-log4j-1.2.15.zip 2.Tomcat 5.5所需的 commons-logging.jar,下载地址: http://www.apache.org/dist/commons/logging/binaries/commons-logging-1.1.zip 3.log4j配置文件: log4j.properties 配置内容为: 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/lizongbo.log log4j.appender.R.MaxFileSize=10MB log4j.appender.R.MaxBackupIndex=10 [...]]]></description>
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