Server Tomcat v8.5 Server at localhost failed to start.tomcat失败启动问题

Server Tomcat v8.5 Server at localhost failed to start.tomcat失败启动问题
**最近在做课程设计，总结了一下常犯错误原因
1、首先确保自己Tomcat能正常使用 访问 http://localhost:8080
2、@WebServlet("/")配置servlet时/忘了加
3、@WebServlet("/") 配置servlet时出现重复名字
4、试试清理

5、具体看你控制台输出的报错
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[/job]]
at java.util.concurrent.FutureTask.report(Unknown Source)
at java.util.concurrent.FutureTask.get(Unknown Source)
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(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor.runWorker(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[/job]]
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: 名为 [servlet.job_info_create]和 [servlet.job_info_update] 的servlet不能映射为一个url模式(url-pattern) [/job_info_create1]
at org.apache.tomcat.util.descriptor.web.WebXml.addServletMappingDecoded(WebXml.java:339)
at org.apache.tomcat.util.descriptor.web.WebXml.addServletMapping(WebXml.java:332)
at org.apache.catalina.startup.ContextConfig.processAnnotationWebServlet(ContextConfig.java:2408)
at org.apache.catalina.startup.ContextConfig.processClass(ContextConfig.java:2084)
at org.apache.catalina.startup.ContextConfig.processAnnotationsStream(ContextConfig.java:2073)
at org.apache.catalina.startup.ContextConfig.processAnnotationsWebResource(ContextConfig.java:1965)
at org.apache.catalina.startup.ContextConfig.processAnnotationsWebResource(ContextConfig.java:1959)
at org.apache.catalina.startup.ContextConfig.processClasses(ContextConfig.java:1227)
at org.apache.catalina.startup.ContextConfig.webConfig(ContextConfig.java:1141)
at org.apache.catalina.startup.ContextConfig.configureStart(ContextConfig.java:776)
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:5065)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
… 6 more
6、首先自己动手查资料，实在不行问老师