title: A required class was missing while executing org.apache.maven.plugins:maven-war-plugin:2.1.1:war
body: <p>Here is my clean install -x result:</p>
  
  <pre><code>[INFO] Scanning for projects...
  [INFO]                                                                         
  [INFO] ------------------------------------------------------------------------
  [INFO] Building test Maven Webapp 0.0.1-SNAPSHOT
  [INFO] ------------------------------------------------------------------------
  [INFO] 
  [INFO] --- maven-clean-plugin:2.5:clean (default-clean) @ test ---
  [INFO] Deleting C:\Users\utopcu\workspace\test\target
  [INFO] 
  [INFO] --- maven-resources-plugin:2.6:resources (default-resources) @ test ---
  [WARNING] Using platform encoding (Cp1254 actually) to copy filtered resources, i.e. build is platform dependent!
  [INFO] Copying 0 resource
  [INFO] 
  [INFO] --- maven-compiler-plugin:2.5.1:compile (default-compile) @ test ---
  [INFO] No sources to compile
  [INFO] 
  [INFO] --- maven-resources-plugin:2.6:testResources (default-testResources) @ test ---
  [WARNING] Using platform encoding (Cp1254 actually) to copy filtered resources, i.e. build is platform dependent!
  [INFO] skip non existing resourceDirectory C:\Users\utopcu\workspace\test\src\test\resources
  [INFO] 
  [INFO] --- maven-compiler-plugin:2.5.1:testCompile (default-testCompile) @ test ---
  [INFO] No sources to compile
  [INFO] 
  [INFO] --- maven-surefire-plugin:2.12.4:test (default-test) @ test ---
  [INFO] No tests to run.
  [INFO] 
  [INFO] --- maven-war-plugin:2.1.1:war (default-war) @ test ---
  [WARNING] Error injecting: org.apache.maven.plugin.war.WarMojo
  java.lang.NoClassDefFoundError: org/apache/maven/shared/filtering/MavenFilteringException
      at java.lang.Class.getDeclaredConstructors0(Native Method)
      at java.lang.Class.privateGetDeclaredConstructors(Class.java:2483)
      at java.lang.Class.getDeclaredConstructors(Class.java:1891)
      at com.google.inject.spi.InjectionPoint.forConstructorOf(InjectionPoint.java:245)
      at com.google.inject.internal.ConstructorBindingImpl.create(ConstructorBindingImpl.java:99)
      at com.google.inject.internal.InjectorImpl.createUninitializedBinding(InjectorImpl.java:653)
      at com.google.inject.internal.InjectorImpl.createJustInTimeBinding(InjectorImpl.java:863)
      at com.google.inject.internal.InjectorImpl.createJustInTimeBindingRecursive(InjectorImpl.java:790)
      at com.google.inject.internal.InjectorImpl.getJustInTimeBinding(InjectorImpl.java:278)
      at com.google.inject.internal.InjectorImpl.getBindingOrThrow(InjectorImpl.java:210)
      at com.google.inject.internal.InjectorImpl.getProviderOrThrow(InjectorImpl.java:986)
      at com.google.inject.internal.InjectorImpl.getProvider(InjectorImpl.java:1019)
      at com.google.inject.internal.InjectorImpl.getProvider(InjectorImpl.java:982)
      at com.google.inject.internal.InjectorImpl.getInstance(InjectorImpl.java:1032)
      at org.eclipse.sisu.reflect.AbstractDeferredClass.get(AbstractDeferredClass.java:44)
      at com.google.inject.internal.ProviderInternalFactory.provision(ProviderInternalFactory.java:86)
      at com.google.inject.internal.InternalFactoryToInitializableAdapter.provision(InternalFactoryToInitializableAdapter.java:55)
      at com.google.inject.internal.ProviderInternalFactory$1.call(ProviderInternalFactory.java:70)
      at com.google.inject.internal.ProvisionListenerStackCallback$Provision.provision(ProvisionListenerStackCallback.java:100)
      at org.eclipse.sisu.plexus.lifecycles.PlexusLifecycleManager.onProvision(PlexusLifecycleManager.java:134)
      at com.google.inject.internal.ProvisionListenerStackCallback$Provision.provision(ProvisionListenerStackCallback.java:109)
      at com.google.inject.internal.ProvisionListenerStackCallback.provision(ProvisionListenerStackCallback.java:55)
      at com.google.inject.internal.ProviderInternalFactory.circularGet(ProviderInternalFactory.java:68)
      at com.google.inject.internal.InternalFactoryToInitializableAdapter.get(InternalFactoryToInitializableAdapter.java:47)
      at com.google.inject.internal.InjectorImpl$2$1.call(InjectorImpl.java:997)
      at com.google.inject.internal.InjectorImpl.callInContext(InjectorImpl.java:1047)
      at com.google.inject.internal.InjectorImpl$2.get(InjectorImpl.java:993)
      at com.google.inject.Scopes$1$1.get(Scopes.java:59)
      at org.eclipse.sisu.locators.LazyBeanEntry.getValue(LazyBeanEntry.java:82)
      at org.eclipse.sisu.plexus.locators.LazyPlexusBean.getValue(LazyPlexusBean.java:52)
      at org.codehaus.plexus.DefaultPlexusContainer.lookup(DefaultPlexusContainer.java:259)
      at org.codehaus.plexus.DefaultPlexusContainer.lookup(DefaultPlexusContainer.java:251)
      at org.apache.maven.plugin.internal.DefaultMavenPluginManager.getConfiguredMojo(DefaultMavenPluginManager.java:459)
      at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:97)
      at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:208)
      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.buildProject(LifecycleModuleBuilder.java:84)
      at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:59)
      at org.apache.maven.lifecycle.internal.LifecycleStarter.singleThreadedBuild(LifecycleStarter.java:183)
      at org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.java:161)
      at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:318)
      at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:153)
      at org.apache.maven.cli.MavenCli.execute(MavenCli.java:555)
      at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:214)
      at org.apache.maven.cli.MavenCli.main(MavenCli.java:158)
      at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
      at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
      at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
      at java.lang.reflect.Method.invoke(Method.java:606)
      at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Launcher.java:290)
      at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:230)
      at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.java:414)
      at org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:357)
      at org.codehaus.classworlds.Launcher.main(Launcher.java:47)
  Caused by: java.lang.ClassNotFoundException: org.apache.maven.shared.filtering.MavenFilteringException
      at org.codehaus.plexus.classworlds.strategy.SelfFirstStrategy.loadClass(SelfFirstStrategy.java:50)
      at org.codehaus.plexus.classworlds.realm.ClassRealm.loadClass(ClassRealm.java:244)
      at org.codehaus.plexus.classworlds.realm.ClassRealm.loadClass(ClassRealm.java:230)
      ... 55 more
  [INFO] ------------------------------------------------------------------------
  [INFO] BUILD FAILURE
  [INFO] ------------------------------------------------------------------------
  [INFO] Total time: 3.342s
  [INFO] Finished at: Mon Aug 26 14:09:27 EEST 2013
  [INFO] Final Memory: 11M/105M
  [INFO] ------------------------------------------------------------------------
  [ERROR] Failed to execute goal org.apache.maven.plugins:maven-war-plugin:2.1.1:war (default-war) on project test: Execution default-war of goal org.apache.maven.plugins:maven-war-plugin:2.1.1:war failed: A required class was missing while executing org.apache.maven.plugins:maven-war-plugin:2.1.1:war: org/apache/maven/shared/filtering/MavenFilteringException
  [ERROR] -----------------------------------------------------
  [ERROR] realm =    plugin&gt;org.apache.maven.plugins:maven-war-plugin:2.1.1
  [ERROR] strategy = org.codehaus.plexus.classworlds.strategy.SelfFirstStrategy
  [ERROR] urls[0] = file:/C:/Users/utopcu/.m2/repository/org/apache/maven/plugins/maven-war-plugin/2.1.1/maven-war-plugin-2.1.1.jar
  [ERROR] urls[1] = file:/C:/Users/utopcu/.m2/repository/org/apache/maven/reporting/maven-reporting-api/2.0.6/maven-reporting-api-2.0.6.jar
  [ERROR] urls[2] = file:/C:/Users/utopcu/.m2/repository/org/apache/maven/doxia/doxia-sink-api/1.0-alpha-7/doxia-sink-api-1.0-alpha-7.jar
  [ERROR] urls[3] = file:/C:/Users/utopcu/.m2/repository/commons-cli/commons-cli/1.0/commons-cli-1.0.jar
  [ERROR] urls[4] = file:/C:/Users/utopcu/.m2/repository/org/codehaus/plexus/plexus-interactivity-api/1.0-alpha-4/plexus-interactivity-api-1.0-alpha-4.jar
  [ERROR] urls[5] = file:/C:/Users/utopcu/.m2/repository/org/apache/maven/maven-archiver/2.4.1/maven-archiver-2.4.1.jar
  [ERROR] urls[6] = file:/C:/Users/utopcu/.m2/repository/org/codehaus/plexus/plexus-archiver/1.2/plexus-archiver-1.2.jar
  [ERROR] urls[7] = file:/C:/Users/utopcu/.m2/repository/org/codehaus/plexus/plexus-io/1.0.1/plexus-io-1.0.1.jar
  [ERROR] urls[8] = file:/C:/Users/utopcu/.m2/repository/org/codehaus/plexus/plexus-interpolation/1.13/plexus-interpolation-1.13.jar
  [ERROR] urls[9] = file:/C:/Users/utopcu/.m2/repository/junit/junit/3.8.1/junit-3.8.1.jar
  [ERROR] urls[10] = file:/C:/Users/utopcu/.m2/repository/com/thoughtworks/xstream/xstream/1.3.1/xstream-1.3.1.jar
  [ERROR] urls[11] = file:/C:/Users/utopcu/.m2/repository/xpp3/xpp3_min/1.1.4c/xpp3_min-1.1.4c.jar
  [ERROR] urls[12] = file:/C:/Users/utopcu/.m2/repository/org/codehaus/plexus/plexus-utils/2.0.5/plexus-utils-2.0.5.jar
  [ERROR] urls[13] = file:/C:/Users/utopcu/.m2/repository/org/apache/maven/shared/maven-filtering/1.0-beta-2/maven-filtering-1.0-beta-2.jar
  [ERROR] Number of foreign imports: 1
  [ERROR] import: Entry[import  from realm ClassRealm[maven.api, parent: null]]
  [ERROR] 
  [ERROR] -----------------------------------------------------: org.apache.maven.shared.filtering.MavenFilteringException
  [ERROR] -&gt; [Help 1]
  [ERROR] 
  [ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
  [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 read the following articles:
  [ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/PluginContainerException
  </code></pre>
  
  <p>And here is my pom.xml:</p>
  
  <pre><code>&lt;project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
      xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd"&gt;
      &lt;modelVersion&gt;4.0.0&lt;/modelVersion&gt;
      &lt;groupId&gt;trest&lt;/groupId&gt;
      &lt;artifactId&gt;test&lt;/artifactId&gt;
      &lt;packaging&gt;war&lt;/packaging&gt;
      &lt;version&gt;0.0.1-SNAPSHOT&lt;/version&gt;
      &lt;name&gt;test Maven Webapp&lt;/name&gt;
      &lt;url&gt;http://maven.apache.org&lt;/url&gt;
      &lt;dependencies&gt;
          &lt;dependency&gt;
              &lt;groupId&gt;junit&lt;/groupId&gt;
              &lt;artifactId&gt;junit&lt;/artifactId&gt;
              &lt;version&gt;3.8.1&lt;/version&gt;
              &lt;scope&gt;test&lt;/scope&gt;
          &lt;/dependency&gt;
      &lt;/dependencies&gt;
      &lt;build&gt;
          &lt;plugins&gt;
              &lt;plugin&gt;
                  &lt;groupId&gt;org.apache.maven.plugins&lt;/groupId&gt;
                  &lt;artifactId&gt;maven-war-plugin&lt;/artifactId&gt;
                  &lt;version&gt;2.1.1&lt;/version&gt;
              &lt;/plugin&gt;
          &lt;/plugins&gt;
      &lt;/build&gt;
  &lt;/project&gt;
  </code></pre>
  
  <p>I tried to delete repositories and install again. I got this error always. It looks like I need help. I think my mojo plugin is broken but i re installed it several times. Any suggestions?</p>