错误合集

[ERROR] 11:54:46.645 [Tomcat-startStop-1] o.apache.catalina.core.ContainerBase - A child container failed during start
java.util.concurrent.ExecutionException: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Tomcat].StandardHost[localhost].TomcatEmbeddedContext[]]
	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:941)
	at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:872)
	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
	at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1421)
	at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1411)
	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[Tomcat].StandardHost[localhost].TomcatEmbeddedContext[]]
	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:167)
	... 6 common frames omitted
Caused by: org.apache.catalina.LifecycleException: Failed to start component [Pipeline[StandardEngine[Tomcat].StandardHost[localhost].TomcatEmbeddedContext[]]]
	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:167)
	at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5166)
	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
	... 6 common frames omitted
Caused by: org.apache.catalina.LifecycleException: Failed to start component [org.apache.catalina.authenticator.NonLoginAuthenticator[]]
	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:167)
	at org.apache.catalina.core.StandardPipeline.startInternal(StandardPipeline.java:182)
	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
	... 8 common frames omitted
Caused by: java.lang.NoSuchMethodError: javax.servlet.ServletContext.getVirtualServerName()Ljava/lang/String;
	at org.apache.catalina.authenticator.AuthenticatorBase.startInternal(AuthenticatorBase.java:1183)
	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
	... 10 common frames omitted

关键点在于 Caused by: java.lang.NoSuchMethodError: javax.servlet.ServletContext.getVirtualServerName()Ljava/lang/String;
在javax.servlet包中 ServletContext类中的 getVirtualServerName() 没有这样的方法错误，()Lxxx表示方法声明返回值为String类型的方法，但是当你点进方法中去看的时候确实又存在，所以很有可能就是javax.servlet包冲突了，有另外一个javax.servlet包存在但是他没有 getVirtualServerName() 这样的方法，所以需要去看看你导入的其它Jar包是哪个和它冲突了，如果是用的maven 只需使用exclusions即可。
比如我的就是axis2-kernel包中的和Tomact中的servlet包冲突了

<dependency>
   <groupId>org.apache.axis2</groupId>
    <artifactId>axis2-kernel</artifactId>
    <version>1.7.8</version>
    <exclusions>
        <exclusion>
            <groupId>javax.servlet</groupId>
            <artifactId>servlet-api</artifactId>
        </exclusion>
    </exclusions>
</dependency>