关于异常org.apache.catalina.LifecycleException: Failed to start

严重:A child container failed during start

java.util.concurrent.ExecutionException:org.apache.catalina.LifecycleException: Failed to start component[StandardEngine[Tomcat].StandardHost[localhost]]

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

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

atorg.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:1123)

atorg.apache.catalina.core.StandardEngine.startInternal(StandardEngine.java:302)

atorg.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)

atorg.apache.catalina.core.StandardService.startInternal(StandardService.java:443)

atorg.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)

atorg.apache.catalina.core.StandardServer.startInternal(StandardServer.java:732)

atorg.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)

at org.apache.catalina.startup.Tomcat.start(Tomcat.java:341)

atorg.apache.tomcat.maven.plugin.tomcat7.run.AbstractRunMojo.startContainer(AbstractRunMojo.java:1238)

atorg.apache.tomcat.maven.plugin.tomcat7.run.AbstractRunMojo.execute(AbstractRunMojo.java:592)

atorg.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:134)

atorg.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:207)

atorg.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:153)

atorg.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:145)

atorg.apache.maven.lifecycle.internal.LifecycleModuleBuilder.b
4000
uildProject(LifecycleModuleBuilder.java:116)

atorg.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:80)

atorg.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build(SingleThreadedBuilder.java:51)

atorg.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.java:128)

at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:307)

at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:193)

at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:106)

at org.apache.maven.cli.MavenCli.execute(MavenCli.java:863)

at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:288)

at org.apache.maven.cli.MavenCli.main(MavenCli.java:199)

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

atsun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)

atsun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

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

atorg.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Launcher.java:289)

atorg.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:229)

atorg.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.java:415)

atorg.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:356)

Caused by: org.apache.catalina.LifecycleException: Failed to startcomponent [StandardEngine[Tomcat].StandardHost[localhost]]

atorg.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:154)

atorg.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1559)

atorg.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1549)

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

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

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

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

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

atorg.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:1131)

atorg.apache.catalina.core.StandardHost.startInternal(StandardHost.java:800)

atorg.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)

... 6 more

这个问题困扰了我两天,这是用maven管理的 项目

一般来说是你的servlet依赖没有加

<scope>provided</scope>

但是我代码没问题,这个依赖配置也没问题,jar包的版本也没得问题,反正就是一直报这个错,服务器启动不起来,最后我换个maven的启动插件jetty就没问题了,而且我不用maven的tomcat插件启动而用我自己的tomcat都没问题,所以是你的maven的tomcat的插件有问题...

你可以进入你的maven的目录下,把tomcat的那个插件包删掉,再重新用maven的tomcat启动,会自己帮你更新下载,这样应该没问题