本地主机上的 Tomcat v9.0 服务器无法在 Eclipse 中启动

【问题标题】：Tomcat v9.0 Server at localhost failed to start in Eclipse本地主机上的 Tomcat v9.0 服务器无法在 Eclipse 中启动
【发布时间】：2018-12-04 03:57:45
【问题描述】：

我的 Tomcat 有问题，它停止工作。我在 3 周前安装了 Tomcat，我已经制作了 50 多个 web 动态项目，maven 项目和一切都很好。今天Tomcat停止工作。例如，我在 Eclipse 中创建了一个项目，当我尝试运行它时出现此错误：Server Tomcat v9.0 Server at localhost failed to start。

我可以从Windows服务启动Tomcat，我可以在浏览器中打开http://localhost:8080/页面，但是我不能在eclipse中启动Tomcat。不只是一个项目，所有项目都不起作用。问题在于 Tomcat 而不是所有应用程序。我卸载并再次安装它并不起作用。我该怎么办？任何反馈都将不胜感激！

我在控制台中收到这条消息：

INFO: At least one JAR was scanned for TLDs yet contained no TLDs. Enable debug logging for this logger for a complete list of JARs that were scanned but no TLDs were found in them. Skipping unneeded JARs during scanning can improve startup time and JSP compilation time.
Jun 25, 2018 5:14:32 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[/LoginRegister]]
    at java.base/java.util.concurrent.FutureTask.report(Unknown Source)
    at java.base/java.util.concurrent.FutureTask.get(Unknown Source)
    at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:949)
    at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:839)
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
    at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1427)
    at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1417)
    at java.base/java.util.concurrent.FutureTask.run(Unknown Source)
    at org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75)
    at java.base/java.util.concurrent.AbstractExecutorService.submit(Unknown Source)
    at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:943)
    at org.apache.catalina.core.StandardEngine.startInternal(StandardEngine.java:258)
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
    at org.apache.catalina.core.StandardService.startInternal(StandardService.java:422)
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
    at org.apache.catalina.core.StandardServer.startInternal(StandardServer.java:770)
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
    at org.apache.catalina.startup.Catalina.start(Catalina.java:682)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
    at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.base/java.lang.reflect.Method.invoke(Unknown Source)
    at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:350)
    at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:492)
Caused by: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/LoginRegister]]
    at org.apache.catalina.util.LifecycleBase.handleSubClassException(LifecycleBase.java:441)
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:198)
    at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1427)
    at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1417)
    at java.base/java.util.concurrent.FutureTask.run(Unknown Source)
    at org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75)
    at java.base/java.util.concurrent.AbstractExecutorService.submit(Unknown Source)
    at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:943)
    ... 21 more
Caused by: java.lang.IllegalArgumentException: The servlets named [LoginRegisterServlet] and [login.register.LoginRegisterServlet] are both mapped to the url-pattern [/loginRegister] which is not permitted
    at org.apache.tomcat.util.descriptor.web.WebXml.addServletMappingDecoded(WebXml.java:329)
    at org.apache.tomcat.util.descriptor.web.WebXml.addServletMapping(WebXml.java:322)
    at org.apache.catalina.startup.ContextConfig.processAnnotationWebServlet(ContextConfig.java:2418)
    at org.apache.catalina.startup.ContextConfig.processAnnotationsStream(ContextConfig.java:2095)
    at org.apache.catalina.startup.ContextConfig.processAnnotationsWebResource(ContextConfig.java:1981)
    at org.apache.catalina.startup.ContextConfig.processAnnotationsWebResource(ContextConfig.java:1975)
    at org.apache.catalina.startup.ContextConfig.processAnnotationsWebResource(ContextConfig.java:1975)
    at org.apache.catalina.startup.ContextConfig.webConfig(ContextConfig.java:1146)
    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:123)
    at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:4989)
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
    ... 27 more

Jun 25, 2018 5:14:32 PM org.apache.catalina.core.ContainerBase startInternal
SEVERE: A child container failed during start
java.util.concurrent.ExecutionException: org.apache.catalina.LifecycleException: A child container failed during start
    at java.base/java.util.concurrent.FutureTask.report(Unknown Source)
    at java.base/java.util.concurrent.FutureTask.get(Unknown Source)
    at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:949)
    at org.apache.catalina.core.StandardEngine.startInternal(StandardEngine.java:258)
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
    at org.apache.catalina.core.StandardService.startInternal(StandardService.java:422)
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
    at org.apache.catalina.core.StandardServer.startInternal(StandardServer.java:770)
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
    at org.apache.catalina.startup.Catalina.start(Catalina.java:682)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
    at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.base/java.lang.reflect.Method.invoke(Unknown Source)
    at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:350)
    at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:492)
Caused by: org.apache.catalina.LifecycleException: A child container failed during start
    at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:958)
    at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:839)
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
    at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1427)
    at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1417)
    at java.base/java.util.concurrent.FutureTask.run(Unknown Source)
    at org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75)
    at java.base/java.util.concurrent.AbstractExecutorService.submit(Unknown Source)
    at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:943)
    ... 13 more

Jun 25, 2018 5:14:32 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: A child container failed during start
    at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:958)
    at org.apache.catalina.core.StandardEngine.startInternal(StandardEngine.java:258)
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
    at org.apache.catalina.core.StandardService.startInternal(StandardService.java:422)
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
    at org.apache.catalina.core.StandardServer.startInternal(StandardServer.java:770)
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
    at org.apache.catalina.startup.Catalina.start(Catalina.java:682)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
    at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.base/java.lang.reflect.Method.invoke(Unknown Source)
    at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:350)
    at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:492)

Jun 25, 2018 5:14:32 PM org.apache.coyote.AbstractProtocol pause
INFO: Pausing ProtocolHandler ["http-nio-8080"]
Jun 25, 2018 5:14:32 PM org.apache.coyote.AbstractProtocol pause
INFO: Pausing ProtocolHandler ["ajp-nio-8009"]
Jun 25, 2018 5:14:32 PM org.apache.catalina.core.StandardService stopInternal
INFO: Stopping service [Catalina]
Jun 25, 2018 5:14:32 PM org.apache.coyote.AbstractProtocol destroy
INFO: Destroying ProtocolHandler ["http-nio-8080"]
Jun 25, 2018 5:14:32 PM org.apache.coyote.AbstractProtocol destroy
INFO: Destroying ProtocolHandler ["ajp-nio-8009"]
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by org.apache.catalina.loader.WebappClassLoaderBase (file:/C:/Program%20Files/Apache%20Software%20Foundation/Tomcat%209.0/lib/catalina.jar) to field java.io.ObjectStreamClass$Caches.localDescs
WARNING: Please consider reporting this to the maintainers of org.apache.catalina.loader.WebappClassLoaderBase
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Jun 25, 2018 5:14:33 PM org.apache.catalina.deploy.NamingResourcesImpl cleanUp
WARNING: Failed to retrieve JNDI naming context for container [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/LoginRegister]] so no cleanup was performed for that container
javax.naming.NamingException: No naming context bound to this class loader
    at org.apache.naming.ContextBindings.getClassLoader(ContextBindings.java:268)
    at org.apache.catalina.deploy.NamingResourcesImpl.cleanUp(NamingResourcesImpl.java:994)
    at org.apache.catalina.deploy.NamingResourcesImpl.stopInternal(NamingResourcesImpl.java:977)
    at org.apache.catalina.util.LifecycleBase.stop(LifecycleBase.java:257)
    at org.apache.catalina.core.StandardContext.stopInternal(StandardContext.java:5327)
    at org.apache.catalina.util.LifecycleBase.stop(LifecycleBase.java:257)
    at org.apache.catalina.util.LifecycleBase.destroy(LifecycleBase.java:293)
    at org.apache.catalina.core.ContainerBase.removeChild(ContainerBase.java:844)
    at org.apache.catalina.core.ContainerBase.destroyInternal(ContainerBase.java:1046)
    at org.apache.catalina.util.LifecycleBase.destroy(LifecycleBase.java:322)
    at org.apache.catalina.core.ContainerBase.removeChild(ContainerBase.java:844)
    at org.apache.catalina.core.ContainerBase.destroyInternal(ContainerBase.java:1046)
    at org.apache.catalina.util.LifecycleBase.destroy(LifecycleBase.java:322)
    at org.apache.catalina.core.StandardService.destroyInternal(StandardService.java:553)
    at org.apache.catalina.util.LifecycleBase.destroy(LifecycleBase.java:322)
    at org.apache.catalina.core.StandardServer.destroyInternal(StandardServer.java:860)
    at org.apache.catalina.util.LifecycleBase.destroy(LifecycleBase.java:322)
    at org.apache.catalina.startup.Catalina.start(Catalina.java:686)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
    at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.base/java.lang.reflect.Method.invoke(Unknown Source)
    at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:350)
    at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:492)

【问题讨论】：

  • “严重：启动时子容器失败”“原因：java.lang.IllegalArgumentException：名为 [LoginRegisterServlet] 和 [login.register.LoginRegisterServlet] 的 servlet 都映射到 url 模式[/loginRegister] which is not allowed" 您的“/loginRegister”代码以前是否有效？
  • 我知道只有一个名为 LoginRegisterServlet 的 servlet，我刚刚删除了它，现在我看到 Tomcat 已成功启动。谢谢你的答复！你帮了我很多。
  • 我已将我们的 cmets 放入答案中，以便对人们更有用。

标签： jsp tomcat servlets


【解决方案1】：

来自上面的cmets

“严重：子容器在启动过程中失败”

“原因：java.lang.IllegalArgumentException：名为 [LoginRegisterServlet] 和 [login.register.LoginRegisterServlet] 的 servlet 都映射到了不允许的 url-pattern [/loginRegister]”

您的“/loginRegister”代码以前是否正常工作？

“我知道只有一个名为 LoginRegisterServlet 的 servlet，我刚刚删除了它，现在我看到 Tomcat 已成功启动。感谢您的回复！您帮了我很多忙。”

【讨论】：

    【解决方案2】：

    我在一小时前遇到了同样的错误。 我去了服务器选项卡，我删除了 tomcat 文件，然后我重新安装它并且它工作了。

    希望对你有帮助。

    【讨论】：

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