新手提问：servlet启动时提示Server Tomcat v7.0 Server at localhost failed to start.错误

nikolaichow 2017-12-23 04:47:12
tomcat启动时，提示错误：


Console信息:


2017-12-23 16:45:21 org.apache.catalina.core.ContainerBase startInternal

严重: A child container failed during start

java.util.concurrent.ExecutionException: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/testWeb]]

	at java.util.concurrent.FutureTask$Sync.innerGet(FutureTask.java:222)

	at java.util.concurrent.FutureTask.get(FutureTask.java:83)

	at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:1119)

	at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:819)

	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:145)

	at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1571)

	at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1561)

	at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)

	at java.util.concurrent.FutureTask.run(FutureTask.java:138)

	at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)

	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)

	at java.lang.Thread.run(Thread.java:662)

Caused by: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/testWeb]]

	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:162)

	... 7 more

Caused by: java.lang.IllegalArgumentException: The servlets named [TestServlet] and [action.TestServlet] are both mapped to the url-pattern [/TestServlet] which is not permitted

	at org.apache.catalina.deploy.WebXml.addServletMapping(WebXml.java:293)

	at org.apache.catalina.startup.ContextConfig.processAnnotationWebServlet(ContextConfig.java:2458)

	at org.apache.catalina.startup.ContextConfig.processAnnotationsStream(ContextConfig.java:2133)

	at org.apache.catalina.startup.ContextConfig.processAnnotationsFile(ContextConfig.java:2094)

	at org.apache.catalina.startup.ContextConfig.processAnnotationsFile(ContextConfig.java:2086)

	at org.apache.catalina.startup.ContextConfig.webConfig(ContextConfig.java:1303)

	at org.apache.catalina.startup.ContextConfig.configureStart(ContextConfig.java:888)

	at org.apache.catalina.startup.ContextConfig.lifecycleEvent(ContextConfig.java:388)

	at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:117)

	at org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBase.java:90)

	at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5522)

	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:145)

	... 7 more

2017-12-23 16:45:21 org.apache.catalina.core.ContainerBase startInternal

严重: 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(FutureTask.java:222)

	at java.util.concurrent.FutureTask.get(FutureTask.java:83)

	at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:1119)

	at org.apache.catalina.core.StandardEngine.startInternal(StandardEngine.java:300)

	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:145)

	at org.apache.catalina.core.StandardService.startInternal(StandardService.java:444)

	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:145)

	at org.apache.catalina.core.StandardServer.startInternal(StandardServer.java:758)

	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:145)

	at org.apache.catalina.startup.Catalina.start(Catalina.java:694)

	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:294)

	at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:428)

Caused by: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost]]

	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:162)

	at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1571)

	at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1561)

	at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)

	at java.util.concurrent.FutureTask.run(FutureTask.java:138)

	at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)

	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)

	at java.lang.Thread.run(Thread.java:662)

Caused by: org.apache.catalina.LifecycleException: A child container failed during start

	at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:1127)

	at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:819)

	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:145)

	... 7 more

2017-12-23 16:45:21 org.apache.catalina.startup.Catalina start

严重: 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:162)

	at org.apache.catalina.startup.Catalina.start(Catalina.java:694)

	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:294)

	at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:428)

Caused by: org.apache.catalina.LifecycleException: Failed to start component [StandardService[Catalina]]

	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:162)

	at org.apache.catalina.core.StandardServer.startInternal(StandardServer.java:758)

	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:145)

	... 7 more

Caused by: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina]]

	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:162)

	at org.apache.catalina.core.StandardService.startInternal(StandardService.java:444)

	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:145)

	... 9 more

Caused by: org.apache.catalina.LifecycleException: A child container failed during start

	at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:1127)

	at org.apache.catalina.core.StandardEngine.startInternal(StandardEngine.java:300)

	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:145)

	... 11 more

2017-12-23 16:45:21 org.apache.coyote.AbstractProtocol pause

信息: Pausing ProtocolHandler ["http-bio-8080"]

2017-12-23 16:45:21 org.apache.coyote.AbstractProtocol pause

信息: Pausing ProtocolHandler ["ajp-bio-8009"]

2017-12-23 16:45:21 org.apache.catalina.core.StandardService stopInternal

信息: Stopping service Catalina

2017-12-23 16:45:21 org.apache.coyote.AbstractProtocol destroy

信息: Destroying ProtocolHandler ["http-bio-8080"]

2017-12-23 16:45:21 org.apache.coyote.AbstractProtocol destroy

信息: Destroying ProtocolHandler ["ajp-bio-8009"]


web.xml配置如下:
<?xml version="1.0" encoding="UTF-8"?>

<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/j2ee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd" version="2.4">

  <servlet>

    <servlet-name>TestServlet</servlet-name>

    <servlet-class>action.TestServlet</servlet-class>

  </servlet>

  <servlet-mapping>

    <servlet-name>TestServlet</servlet-name>

    <url-pattern>/TestServlet</url-pattern>

  </servlet-mapping>

  <welcome-file-list>

    <welcome-file>main.html</welcome-file>

  </welcome-file-list>

</web-app>



servlet代码：


package action;



import java.io.IOException;

import javax.servlet.ServletException;

import javax.servlet.annotation.WebServlet;

import javax.servlet.http.HttpServlet;

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;



/**

 * Servlet implementation class TestServlet

 */

@WebServlet("/TestServlet")

public class TestServlet extends HttpServlet {

	private static final long serialVersionUID = 1L;



    /**

     * @see HttpServlet#HttpServlet()

     */

    public TestServlet() {

        super();

        // TODO Auto-generated constructor stub

    }



	/**

	 * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)

	 */

	protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

		// TODO Auto-generated method stub

		response.setContentType("text/html; charset=UTF-8");

		String valA = request.getParameter("valA");

		String valB = request.getParameter("valB");

		System.out.println("valA:"+valA+";valB:"+valB);

	}



	/**

	 * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)

	 */

	protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

		// TODO Auto-generated method stub

	}



}
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雪飞梦魂天 2017-12-27
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注解和web.xml文件配置重复了，可以删除这一行@WebServlet("/TestServlet")
什么都不能 2017-12-26
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注解和web.xml文件描述重复了，pattern冲突，只保留一种方式
tianfang 2017-12-25
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Caused by: java.lang.IllegalArgumentException: The servlets named [TestServlet] and [action.TestServlet] are both mapped to the url-pattern [/TestServlet] which is not permitted 换其中一个
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