title: Maven project not working on Tomcat 7
body: <p>I'm trying to run a Maven project on Tomcat 7, but it doesn't seem to work. When I enter from command prompt <code>mvn clean tomcat7:run</code>, I get this error:</p>
  
  <pre><code>    SEVERE: A child container failed during start
  java.util.concurrent.ExecutionException: org.apache.catalina.LifecycleException:
   Failed to start component [StandardEngine[Tomcat].StandardHost[localhost].Stand
  ardContext[/hitech-store]]
          at java.util.concurrent.FutureTask$Sync.innerGet(FutureTask.java:252)
          at java.util.concurrent.FutureTask.get(FutureTask.java:111)
          at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.ja
  va:1123)
          at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java
  :785)
          at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
          at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.
  java:1559)
          at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.
  java:1549)
          at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334)
          at java.util.concurrent.FutureTask.run(FutureTask.java:166)
          at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.
  java:1110)
          at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor
  .java:603)
          at java.lang.Thread.run(Thread.java:722)
  Caused by: org.apache.catalina.LifecycleException: Failed to start component [St
  andardEngine[Tomcat].StandardHost[localhost].StandardContext[/hitech-store]]
          at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:154)
          ... 7 more
  Caused by: java.lang.ClassCastException: org.springframework.web.SpringServletCo
  ntainerInitializer cannot be cast to javax.servlet.ServletContainerInitializer
          at org.apache.catalina.startup.ContextConfig.getServletContainerInitiali
  zer(ContextConfig.java:1657)
          at org.apache.catalina.startup.ContextConfig.processServletContainerInit
  ializers(ContextConfig.java:1565)
          at org.apache.catalina.startup.ContextConfig.webConfig(ContextConfig.jav
  a:1273)
          at org.apache.catalina.startup.ContextConfig.configureStart(ContextConfi
  g.java:878)
          at org.apache.catalina.startup.ContextConfig.lifecycleEvent(ContextConfi
  g.java:369)
          at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(Lifecycl
  eSupport.java:119)
          at org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBa
  se.java:90)
          at org.apache.catalina.core.StandardContext.startInternal(StandardContex
  t.java:5173)
          at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
          ... 7 more
  
  mag 20, 2013 8:05:22 PM org.apache.catalina.core.ContainerBase startInternal
  SEVERE: 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$Sync.innerGet(FutureTask.java:252)
          at java.util.concurrent.FutureTask.get(FutureTask.java:111)
          at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.ja
  va:1123)
          at org.apache.catalina.core.StandardEngine.startInternal(StandardEngine.
  java:302)
          at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
          at org.apache.catalina.core.StandardService.startInternal(StandardServic
  e.java:443)
          at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
          at org.apache.catalina.core.StandardServer.startInternal(StandardServer.
  java:732)
          at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
          at org.apache.catalina.startup.Tomcat.start(Tomcat.java:335)
          at org.apache.tomcat.maven.plugin.tomcat7.run.AbstractRunMojo.startConta
  iner(AbstractRunMojo.java:1018)
          at org.apache.tomcat.maven.plugin.tomcat7.run.AbstractRunMojo.execute(Ab
  stractRunMojo.java:478)
          at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(Default
  BuildPluginManager.java:101)
          at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor
  .java:209)
          at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor
  .java:153)
          at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor
  .java:145)
          at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProje
  ct(LifecycleModuleBuilder.java:84)
          at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProje
  ct(LifecycleModuleBuilder.java:59)
          at org.apache.maven.lifecycle.internal.LifecycleStarter.singleThreadedBu
  ild(LifecycleStarter.java:183)
          at org.apache.maven.lifecycle.internal.LifecycleStarter.execute(Lifecycl
  eStarter.java:161)
          at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:320)
          at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:156)
          at org.apache.maven.cli.MavenCli.execute(MavenCli.java:537)
          at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:196)
          at org.apache.maven.cli.MavenCli.main(MavenCli.java:141)
          at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
          at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.
  java:57)
          at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAcces
  sorImpl.java:43)
          at java.lang.reflect.Method.invoke(Method.java:601)
          at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Laun
  cher.java:290)
          at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.jav
  a:230)
          at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(La
  uncher.java:409)
          at org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:
  352)
  Caused by: org.apache.catalina.LifecycleException: Failed to start component [St
  andardEngine[Tomcat].StandardHost[localhost]]
          at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:154)
          at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.
  java:1559)
          at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.
  java:1549)
          at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334)
          at java.util.concurrent.FutureTask.run(FutureTask.java:166)
          at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.
  java:1110)
          at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor
  .java:603)
          at java.lang.Thread.run(Thread.java:722)
  Caused by: org.apache.catalina.LifecycleException: A child container failed duri
  ng start
          at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.ja
  va:1131)
          at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java
  :785)
          at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
          ... 7 more
  
  [INFO] ------------------------------------------------------------------------
  [INFO] BUILD FAILURE
  [INFO] ------------------------------------------------------------------------
  [INFO] Total time: 11.658s
  [INFO] Finished at: Mon May 20 20:05:22 CEST 2013
  [INFO] Final Memory: 19M/175M
  [INFO] ------------------------------------------------------------------------
  [ERROR] Failed to execute goal org.apache.tomcat.maven:tomcat7-maven-plugin:2.0:
  run (default-cli) on project hitech-store: Could not start Tomcat: Failed to sta
  rt component [StandardServer[-1]]: Failed to start component [StandardService[To
  mcat]]: Failed to start component [StandardEngine[Tomcat]]: A child container fa
  iled during start -&gt; [Help 1]
  [ERROR]
  [ERROR] To see the full stack trace of the errors, re-run Maven with the -e swit
  ch.
  [ERROR] Re-run Maven using the -X switch to enable full debug logging.
  [ERROR]
  [ERROR] For more information about the errors and possible solutions, please rea
  d the following articles:
  [ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoExecutionE
  xception
  </code></pre>
  
  <p>I have tried everything, including trying to run the project on other computers. Out of 4 computers, it runs on 2 but not on the other 2. do you think it's a problem of Maven or Tomcat?</p>