Question

碰到了这个错误，一直搞不定，web.xml跟log4j.xml都没有错。。就是找不到！

Exception sending context initialized event to listener instance of class org.springframework.web.util.Log4jConfigListener
java.lang.IllegalArgumentException: Invalid 'log4jConfigLocation' parameter: class path resource [log4j.xml] cannot be resolved to absolute file path because it does not reside in the file system
at org.springframework.web.util.Log4jWebConfigurer.initLogging(Log4jWebConfigurer.java:155)
at org.springframework.web.util.Log4jConfigListener.contextInitialized(Log4jConfigListener.java:45)
at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4206)
at org.apache.catalina.core.StandardContext.start(StandardContext.java:4705)
at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:799)
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:779)
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:601)
at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:1079)
at org.apache.catalina.startup.HostConfig.deployDirectories(HostConfig.java:1002)
at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:506)
at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1317)
at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:324)
at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:142)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1065)
at org.apache.catalina.core.StandardHost.start(StandardHost.java:840)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1057)
at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:463)
at org.apache.catalina.core.StandardService.start(StandardService.java:525)
at org.apache.catalina.core.StandardServer.start(StandardServer.java:754)
at org.apache.catalina.startup.Catalina.start(Catalina.java:595)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:289)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:414)
2013-7-23 9:48:20 org.apache.catalina.core.StandardContext start
严重: Error listenerStart
2013-7-23 9:48:20 org.apache.catalina.core.StandardContext start
严重: Context [/DLJTAQDTJGPT] startup failed due to previous errors

Answer 1

Invalid 'log4jConfigLocation' parameter: class path resource [log4j.xml] cannot be resolved to absolute file path because it does not reside in the file system
它说你的 log4jconfigLocation 参数无效，因为它无法解释成一个磁盘文件系统中的位置，可能是你它在某个 jar/zip 内部等。如果 log4jConfigLocation 之外还有另一个能说明是 classpath 还是 filesystem 这样的文件类型的说明就好了。

我不了解新的 Spring，我们在给出 log4jConfigLocation 时能告诉 Spring 这个文件是一个相对目录还是某个 jar 内部的文件或者一个 URL 么？

1. 文件系统上的目录位置。
<context-param>
<param-name>log4jConfigLocation</param-name>
<param-value>/WEB-INF/classes/log4j.web.properties</param-value>
</context-param>
<listener>
<listener-class>org.springframework.web.util.Log4jConfigListener</listener-class>
</listener>

2. jar 内部的。
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:com/xx/admin/conf/applicationContext*.xml</param-value>
</context-param>
<context-param>

<param-name>log4jConfigLocation</param-name>
<param-value>classpath:com/xx/admin/conf/log4j.properties</param-value>
</context-param>
<listener>

<listener-class>org.springframework.web.util.Log4jConfigListener</listener-class>
</listener>

Answer 2

是不文件的位置放错了 log4j.xml 放到src目录下试试