The servlets named [X] and [X] are both mapped to the url-pattern [/X] where ich is not permitted

最新推荐文章于 2021-08-31 10:43:43 发布

原创最新推荐文章于 2021-08-31 10:43:43 发布 · 577 阅读

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#注解配置 #xml配置 #JavaWeb

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本文介绍了在使用Servlet过程中遇到的URL映射冲突问题及解决方法。冲突发生在两个Servlet（名称为[user]和[controller.UserServlet]）被映射到相同的URL模式[/user]时。文章展示了如何检查和修改web.xml配置文件以及Servlet注解来避免此类问题。

初学Servlet时,报出错误如下:

Caused by: java.lang.IllegalArgumentException: The servlets named [user] and [controller.UserServlet] are both mapped to the url-pattern [/user] which is not permitted
	at org.apache.tomcat.util.descriptor.web.WebXml.addServletMappingDecoded(WebXml.java:326)
	at org.apache.tomcat.util.descriptor.web.WebXml.addServletMapping(WebXml.java:319)
	at org.apache.catalina.startup.ContextConfig.processAnnotationWebServlet(ContextConfig.java:2379)
	at org.apache.catalina.startup.ContextConfig.processAnnotationsStream(ContextConfig.java:2056)
	at org.apache.catalina.startup.ContextConfig.processAnnotationsWebResource(ContextConfig.java:1942)
	at org.apache.catalina.startup.ContextConfig.processAnnotationsWebResource(ContextConfig.java:1936)
	at org.apache.catalina.startup.ContextConfig.webConfig(ContextConfig.java:1143)
	at org.apache.catalina.startup.ContextConfig.configureStart(ContextConfig.java:765)
	at org.apache.catalina.startup.ContextConfig.lifecycleEvent(ContextConfig.java:299)
	at org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBase.java:94)
	at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5154)
	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
	... 42 more

大致的意思是说一个叫[user]和一个叫[controller.UserServlet]的东西同时指向了url-pattern [/user]

经过一番检查之后得知自己犯了一个低级的错误

web.xml配置如下所示: