IllegalArgumentException：名为 [HelloWorlds] 和 [Hello] 的 servlet 都映射到不允许的 url 模式 [/sHelloWorld] [重复]答案

【问题标题】：IllegalArgumentException: The servlets named [HelloWorlds] and [Hello] are both mapped to the url-pattern [/sHelloWorld] which is not permitted [duplicate]IllegalArgumentException：名为 [HelloWorlds] 和 [Hello] 的 servlet 都映射到不允许的 url 模式 [/sHelloWorld] [重复]
【发布时间】：2013-09-19 00:24:33
【问题描述】：

当我从eclipse启动tomcat时出现以下错误

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"]

【问题讨论】：

你看到这个错误The servlets named [HelloWorlds] and [Hello] are both mapped to the url-pattern [/sHelloWorld] which is not permitted了吗？
HelloWorlds你好HelloWorlds/sHelloWorld-app>
url映射不应该影响tomcat的启动
检查这个：tomcat.apache.org/native-doc
当我从命令提示符启动服务器时，它给出以下信息：使用 CATALINA_BASE: "C:\apache-tomcat" 使用 CATALINA_HOME: "C:\apache-tomcat" 使用 CATALINA_TMPDIR: "C:\apache -tomcat\temp" 使用 JRE_HOME："C:\Program Files\Java\jdk1.6.0\" 使用 CLASSPATH："C:\apache-tomcat\bin\bootstrap.jar;C:\apache-tomcat\bin\tomcat- juli.jar" C:\apache-tomcat\bin>

标签： eclipse tomcat servlets mapping

【解决方案1】：

这是 apache tomcat servlet 容器的 7.0.42 版本的新 feature。

我刚刚用下面的web.xml做了一个测试

  <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>

得到了和你一样的错误

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

与早期版本相同的测试 - 即7.0.32 - 在上下文开始时没有导致任何错误。

所以显然你有两个 servlet HelloWorlds 和 Hello 都映射到同一个 url /sHelloWorld。您在评论中粘贴的 web.xml 很可能不是正确的。

7.0.32 版本中的效果是所有打算发送到Servlet_01 的请求实际上都会发送到Servlet_02。所以我想说现在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是一件好事。

即使您有相同的 servlet，但有两个不同的名称映射到相同的 url 模式，也会发生错误。

要解决您的问题，首先找到正确的 web.xml 并对其进行编辑，以便每个 servlet 具有不同的 url 映射。

【讨论】：

感谢它非常有帮助。但我想确认的一件事 servlet-name 和 class-name 应该是相同的。 bcoz 当我为 servlet-name 和 class-name 使用相同的名称时，它可以工作，而当我给 servlet-name 不同时，它会给出相同的错误。
@HimanshuKhurana，不客气！但请注意，servlet-name 不需要与servlet-class 相同，第一个只是一个逻辑名称，它有助于以更简单的方式引用 servlet，例如在配置 url-mapping 时。第二个必须是 servlet 类的完全限定名称 - 即 <package-name>.<class-name> - 你没有选择它的空间。在我的示例中，web.xml so.servlets.Servlet_01 是包 so.servlets. 中包含的 servlet 类 Servlet_01 的完全限定名称。

【解决方案2】：

原因可能是注释和声明性配置的混合。看看java.lang.IllegalArgumentException: The servlets named [X] and [Y] are both mapped to the url-pattern [/url] which is not permitted

【讨论】：