IllegalArgumentException：名为[HelloWorlds]和[Hello]的servlet都映射到不允许的url-pattern [/ sHelloWorld] [英] IllegalArgumentException: The servlets named [HelloWorlds] and [Hello] are both mapped to the url-pattern [/sHelloWorld] which is not permitted

问题描述

当我从eclipse启动tomcat时，我收到以下错误

I am getting the below error when I start tomcat from eclipse

Sep 14, 2013 4:18:03 PM org.apache.catalina.core.AprLifecycleListener init
    INFO: The APR based Apache Tomcat Native library which allows optimal performance in production environments was not found on the java.library.path: C:\Program Files\Java\jre1.6.0\bin;.;C:\WINDOWS\Sun\Java\bin;C:\WINDOWS\system32;C:\WINDOWS;C:/Program Files/Java/jre1.6.0/bin/client;C:/Program Files/Java/jre1.6.0/bin;C:/Program Files/Java/jre1.6.0/lib/i386;C:\WINDOWS\system32;C:\WINDOWS;C:\WINDOWS\System32\Wbem;C:\Program Files\QuickTime\QTSystem\;C:\Program Files\MySQL\MySQL Server 5.0\bin;C:\eclipse;
    Sep 14, 2013 4:18:03 PM org.apache.tomcat.util.digester.SetPropertiesRule begin
    WARNING: [SetPropertiesRule]{Server/Service/Engine/Host/Context} Setting property 'source' to 'org.eclipse.jst.jee.server:TestProject' did not find a matching property.
    Sep 14, 2013 4:18:03 PM org.apache.coyote.AbstractProtocol init
    INFO: Initializing ProtocolHandler ["http-bio-8080"]
    Sep 14, 2013 4:18:03 PM org.apache.coyote.AbstractProtocol init
    INFO: Initializing ProtocolHandler ["ajp-bio-8009"]
    Sep 14, 2013 4:18:03 PM org.apache.catalina.startup.Catalina load
    INFO: Initialization processed in 420 ms
    Sep 14, 2013 4:18:03 PM org.apache.catalina.core.StandardService startInternal
    INFO: Starting service Catalina
    Sep 14, 2013 4:18:03 PM org.apache.catalina.core.StandardEngine startInternal
    INFO: Starting Servlet Engine: Apache Tomcat/7.0.42
    Sep 14, 2013 4:18:03 PM org.apache.catalina.core.ContainerBase startInternal
    SEVERE: A child container failed during start
    java.util.concurrent.ExecutionException: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/TestProject]]
        at java.util.concurrent.FutureTask$Sync.innerGet(Unknown Source)
        at java.util.concurrent.FutureTask.get(Unknown Source)
        at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:1123)
        at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:800)
        at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
        at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1559)
        at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1549)
        at java.util.concurrent.FutureTask$Sync.innerRun(Unknown Source)
        at java.util.concurrent.FutureTask.run(Unknown Source)
        at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknown Source)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
        at java.lang.Thread.run(Unknown Source)
    Caused by: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/TestProject]]
        at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:154)
        ... 7 more
    Caused by: java.lang.IllegalArgumentException: The servlets named [HelloWorlds] and [Hello] are both mapped to the url-pattern [/sHelloWorld] which is not permitted
        at org.apache.catalina.deploy.WebXml.addServletMapping(WebXml.java:335)
        at org.apache.catalina.startup.ContextConfig.processAnnotationWebServlet(ContextConfig.java:2450)
        at org.apache.catalina.startup.ContextConfig.processAnnotationsStream(ContextConfig.java:2132)
        at org.apache.catalina.startup.ContextConfig.processAnnotationsJndi(ContextConfig.java:2055)
        at org.apache.catalina.startup.ContextConfig.processAnnotationsUrl(ContextConfig.java:1962)
        at org.apache.catalina.startup.ContextConfig.webConfig(ContextConfig.java:1300)
        at org.apache.catalina.startup.ContextConfig.configureStart(ContextConfig.java:878)
        at org.apache.catalina.startup.ContextConfig.lifecycleEvent(ContextConfig.java:376)
        at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:119)
        at org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBase.java:90)
        at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5322)
        at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
        ... 7 more
    Sep 14, 2013 4:18:03 PM org.apache.catalina.core.ContainerBase startInternal
    SEVERE: A child container failed during start
    java.util.concurrent.ExecutionException: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost]]
        at java.util.concurrent.FutureTask$Sync.innerGet(Unknown Source)
        at java.util.concurrent.FutureTask.get(Unknown Source)
        at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:1123)
        at org.apache.catalina.core.StandardEngine.startInternal(StandardEngine.java:302)
        at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
        at org.apache.catalina.core.StandardService.startInternal(StandardService.java:443)
        at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
        at org.apache.catalina.core.StandardServer.startInternal(StandardServer.java:732)
        at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
        at org.apache.catalina.startup.Catalina.start(Catalina.java:691)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
        at java.lang.reflect.Method.invoke(Unknown Source)
        at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:322)
        at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:456)
    Caused by: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost]]
        at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:154)
        at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1559)
        at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1549)
        at java.util.concurrent.FutureTask$Sync.innerRun(Unknown Source)
        at java.util.concurrent.FutureTask.run(Unknown Source)
        at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknown Source)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
        at java.lang.Thread.run(Unknown Source)
    Caused by: org.apache.catalina.LifecycleException: A child container failed during start
        at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:1131)
        at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:800)
        at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
        ... 7 more
    Sep 14, 2013 4:18:03 PM org.apache.catalina.startup.Catalina start
    SEVERE: The required Server component failed to start so Tomcat is unable to start.
    org.apache.catalina.LifecycleException: Failed to start component [StandardServer[8005]]
        at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:154)
        at org.apache.catalina.startup.Catalina.start(Catalina.java:691)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
        at java.lang.reflect.Method.invoke(Unknown Source)
        at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:322)
        at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:456)
    Caused by: org.apache.catalina.LifecycleException: Failed to start component [StandardService[Catalina]]
        at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:154)
        at org.apache.catalina.core.StandardServer.startInternal(StandardServer.java:732)
        at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
        ... 7 more
    Caused by: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina]]
        at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:154)
        at org.apache.catalina.core.StandardService.startInternal(StandardService.java:443)
        at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
        ... 9 more
    Caused by: org.apache.catalina.LifecycleException: A child container failed during start
        at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:1131)
        at org.apache.catalina.core.StandardEngine.startInternal(StandardEngine.java:302)
        at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
        ... 11 more
    Sep 14, 2013 4:18:03 PM org.apache.coyote.AbstractProtocol pause
    INFO: Pausing ProtocolHandler ["http-bio-8080"]
    Sep 14, 2013 4:18:03 PM org.apache.coyote.AbstractProtocol pause
    INFO: Pausing ProtocolHandler ["ajp-bio-8009"]
    Sep 14, 2013 4:18:03 PM org.apache.catalina.core.StandardService stopInternal
    INFO: Stopping service Catalina
    Sep 14, 2013 4:18:03 PM org.apache.coyote.AbstractProtocol destroy
    INFO: Destroying ProtocolHandler ["http-bio-8080"]s
    Sep 14, 2013 4:18:03 PM org.apache.coyote.AbstractProtocol destroy
    INFO: Destroying ProtocolHandler ["ajp-bio-8009"]

推荐答案

这是apache tomcat servlet系统的版本 7.0.42 的新功能。

This is a new feature of the version 7.0.42 of the apache tomcat servlet conainer.

我刚刚使用以下web.xml进行了测试

I just made a test with the following web.xml

  <servlet>
    <description></description>
    <display-name>Servlet_01</display-name>
    <servlet-name>Servlet_01</servlet-name>
    <servlet-class>so.servlets.Servlet_01</servlet-class>
  </servlet>
  <servlet-mapping>
    <servlet-name>Servlet_01</servlet-name>
    <url-pattern>/Servlet_01</url-pattern>
  </servlet-mapping>

  <servlet>
    <description></description>
    <display-name>Servlet_02</display-name>
    <servlet-name>Servlet_02</servlet-name>
    <servlet-class>so.servlets.Servlet_02</servlet-class>
  </servlet>
  <servlet-mapping>
    <servlet-name>Servlet_02</servlet-name>
    <url-pattern>/Servlet_01</url-pattern>
  </servlet-mapping>

并且与您完全相同的错误

and got exactly the same erros as you

The servlets named [Servlet_01] and [Servlet_02] are both mapped to the url-pattern [/Servlet_01] which is not permitted

与较早版本相同的测试 - 即 7.0.32 - 在开始时没有引起任何错误的上下文。

The same Test with an earlier version - namely 7.0.32 - did not cause any error on the start of the context.

所以显然你有两个servlet HelloWorlds 和 Hello 都映射到相同的url / sHelloWorld 。您在评论中粘贴的 web.xml 很可能不是正确的。

So apprarently you have two servlets HelloWorlds and Hello both mapped to the same url /sHelloWorld. The web.xml you have pasted in your comment is most likely not the right one.

版本 7.0.32 是所有打算去 Servlet_01 的请求实际上将转到 Servlet_02 。所以我会说这是一件好事，现在tomcat在上下文中发现这样一个错误的映射时会抛出一个错误。

The effect in the version 7.0.32 is that all request intended to go to Servlet_01 will actually go to Servlet_02. So I would say it's a good thing that now tomcat throws an error when it find such a erroneous mapping in a context.

即使你有相同的servlet也会发生错误有两个不同的名称映射到相同的url模式。

The error happens even if you have the same servlet with two different names mapped to the same url pattern.

要解决您的问题，首先找到正确的web.xml并编辑它，以便每个servlet都有一个不同的URL映射。

To solve your problem, first find the right web.xml and edit it so that each servlet has a distinct url mapping.

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