tomcat 启动报错？

我的tomcat启动报错，情况是这样的：

环境：

系统：windows10
java：java8
tomcat: tomcat-8.0.28

如果不做任何修改，tomcat启动正常，各个项目运行正常。
为了编译方便（没有用IDE开发），我把从http://www.java2s.com/Code/Jar/j/Downloadjavaxservlet31jar.htm上下载的servlet-3.1.jar放到了%JAVA_HOME%\jre\lib\ext目录下
编译倒是省事了，但启动tomcat就出错了，每个项目的报错都一样

06-Dec-2015 17:38:43.004 SEVERE [localhost-startStop-1] org.apache.catalina.core.ContainerBase.addChildInternal ContainerBase.addChild: start:
 org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/docs]]
        at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:154)
        at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:725)
        at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:701)
        at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:717)
        at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:1101)
        at org.apache.catalina.startup.HostConfig$DeployDirectory.run(HostConfig.java:1816)
        at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
        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.lang.NoSuchMethodError: javax.servlet.ServletContext.getVirtualServerName()Ljava/lang/String;
        at org.apache.tomcat.websocket.server.WsServerContainer.<init>(WsServerContainer.java:147)
        at org.apache.tomcat.websocket.server.WsSci.init(WsSci.java:131)
        at org.apache.tomcat.websocket.server.WsSci.onStartup(WsSci.java:47)
        at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5170)
        at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
        ... 10 more

06-Dec-2015 17:38:43.018 SEVERE [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Error deploying web application directory D:\tomcat\apache-tomcat-8.0.28\webapps\docs
 java.lang.IllegalStateException: ContainerBase.addChild: start: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/docs]]
        at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:729)
        at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:701)
        at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:717)
        at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:1101)
        at org.apache.catalina.startup.HostConfig$DeployDirectory.run(HostConfig.java:1816)
        at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
        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)

06-Dec-2015 17:38:43.031 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deployment of web application directory D:\tomcat\apache-tomcat-8.0.28\webapps\docs has finished in 488 ms

可能是你下的servlet和tomcat使用的不兼容。为什么不用tomcat自带的呢？

Caused by: java.lang.NoSuchMethodError: javax.servlet.ServletContext.getVirtualServerName()Ljava/lang/String;

估计jar包冲突了

【热门文章】