子容器启动失败，java build path 里面没有maven dependencies

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cccca

2019-10-19 21:27:25

import java.io.IOException;

import javax.servlet.ServletException;

import javax.servlet.http.HttpServlet;

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;

public class Frist extends HttpServlet {

@Override

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

String category=request.getParameter("name");

String html="<p style='color:blue'>"+category+"</p>";

response.getWriter().print(html);

}

<?xml version="1.0" encoding="UTF-8"?>

<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://xmlns.jcp.org/xml/ns/javaee" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd" id="WebApp_ID" version="3.1">

<display-name>oneServe</display-name>

<welcome-file-list>

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

<welcome-file>index.htm</welcome-file>

<welcome-file>index.jsp</welcome-file>

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

<welcome-file>default.htm</welcome-file>

<welcome-file>default.jsp</welcome-file>

</welcome-file-list>

<servlet-name>SerletProj</servlet-name>

<servlet-class>com.textSever.Frist</servlet-class>

</servlet>

<servlet-mapping>

<servlet-name>SerletProj</servlet-name>

<url-pattern>ShopSerlet</url-pattern>

</servlet-mapping>

</web-app>

严重: 子容器启动失败

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

at java.util.concurrent.FutureTask.report(FutureTask.java:122)

at java.util.concurrent.FutureTask.get(FutureTask.java:192)

at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:931)

at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:841)

at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)

at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1412)

at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1402)

at java.util.concurrent.FutureTask.run(FutureTask.java:266)

at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)

at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)

at java.lang.Thread.run(Thread.java:745)

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

at org.apache.catalina.util.LifecycleBase.handleSubClassException(LifecycleBase.java:440)

at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:198)

... 6 more

Caused by: java.lang.IllegalArgumentException: Invalid <url-pattern> [ShopSerlet] in servlet mapping

at org.apache.catalina.core.StandardContext.addServletMappingDecoded(StandardContext.java:3175)

at org.apache.catalina.core.StandardContext.addServletMappingDecoded(StandardContext.java:3162)

at org.apache.catalina.startup.ContextConfig.configureContext(ContextConfig.java:1376)

at org.apache.catalina.startup.ContextConfig.webConfig(ContextConfig.java:1156)

at org.apache.catalina.startup.ContextConfig.configureStart(ContextConfig.java:769)

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:5063)

at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)

... 6 more

十月 19, 2019 9:23:04 下午 org.apache.catalina.core.ContainerBase startInternal

严重: 子容器启动失败

java.util.concurrent.ExecutionException: org.apache.catalina.LifecycleException: 子容器启动失败

at java.util.concurrent.FutureTask.report(FutureTask.java:122)

at java.util.concurrent.FutureTask.get(FutureTask.java:192)

at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:931)

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:766)

at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)

at org.apache.catalina.startup.Catalina.start(Catalina.java:688)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

at java.lang.reflect.Method.invoke(Method.java:498)

at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:353)

at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:493)

Caused by: org.apache.catalina.LifecycleException: 子容器启动失败

at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:942)

at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:841)

at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)

at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1412)

at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1402)

at java.util.concurrent.FutureTask.run(FutureTask.java:266)

at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)

at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)

at java.lang.Thread.run(Thread.java:745)

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

at java.util.concurrent.FutureTask.report(FutureTask.java:122)

at java.util.concurrent.FutureTask.get(FutureTask.java:192)

at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:931)

... 8 more