maven eclipse:eclipse ne parviennent pas à exécuter

Je suis novice dans maven. J'essaie d'exécuter >mvn eclipse:eclipse -Dwtpversion=2.0. Mais je suis d'erreur ci-dessous:

  D:\test\CounterWebApp>mvn eclipse:eclipse -Dwtpversion=2.0
[INFO] Scanning for projects...
[INFO]
[INFO] ------------------------------------------------------------------------
[INFO] Building CounterWebApp Maven Webapp 1.0-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[INFO]
[INFO] >>> maven-eclipse-plugin:2.9:eclipse (default-cli) @ CounterWebApp >>>
[INFO]
[INFO] --- maven-dependency-plugin:2.1:copy-dependencies (copy-dependencies) @ C
ounterWebApp ---
[INFO] junit-3.8.1.jar already exists in destination.
[INFO]
[INFO] <<< maven-eclipse-plugin:2.9:eclipse (default-cli) @ CounterWebApp <<<
[INFO]
[INFO] --- maven-eclipse-plugin:2.9:eclipse (default-cli) @ CounterWebApp ---
28 Feb, 2013 1:01:48 PM org.sonatype.guice.bean.reflect.Logs$JULSink warn
WARNING: Error injecting: org.apache.maven.plugin.eclipse.EclipsePlugin
java.lang.NoClassDefFoundError: org/codehaus/plexus/resource/loader/ResourceNotF
oundException
at java.lang.Class.getDeclaredConstructors0(Native Method)
at java.lang.Class.privateGetDeclaredConstructors(Class.java:2389)
at java.lang.Class.getDeclaredConstructors(Class.java:1836)
at com.google.inject.spi.InjectionPoint.forConstructorOf(InjectionPoint.
java:245)
at com.google.inject.internal.ConstructorBindingImpl.create(ConstructorB
indingImpl.java:98)
at com.google.inject.internal.InjectorImpl.createUninitializedBinding(In
jectorImpl.java:629)
at com.google.inject.internal.InjectorImpl.createJustInTimeBinding(Injec
torImpl.java:831)
at com.google.inject.internal.InjectorImpl.createJustInTimeBindingRecurs
ive(InjectorImpl.java:758)
at com.google.inject.internal.InjectorImpl.getJustInTimeBinding(Injector
Impl.java:255)
at com.google.inject.internal.InjectorImpl.getBindingOrThrow(InjectorImp
l.java:204)
at com.google.inject.internal.InjectorImpl.getProviderOrThrow(InjectorIm
pl.java:954)
at com.google.inject.internal.InjectorImpl.getProvider(InjectorImpl.java
:987)
at com.google.inject.internal.InjectorImpl.getProvider(InjectorImpl.java
:950)
at com.google.inject.internal.InjectorImpl.getInstance(InjectorImpl.java
:1000)
at org.sonatype.guice.bean.reflect.AbstractDeferredClass.get(AbstractDef
erredClass.java:45)
at com.google.inject.internal.ProviderInternalFactory.provision(Provider
InternalFactory.java:84)
at com.google.inject.internal.InternalFactoryToInitializableAdapter.prov
ision(InternalFactoryToInitializableAdapter.java:52)
at com.google.inject.internal.ProviderInternalFactory$1.call(ProviderInt
ernalFactory.java:70)
at com.google.inject.internal.ProvisionListenerStackCallback$Provision.p
rovision(ProvisionListenerStackCallback.java:100)
at org.sonatype.guice.plexus.lifecycles.PlexusLifecycleManager.onProvisi
on(PlexusLifecycleManager.java:138)
at com.google.inject.internal.ProvisionListenerStackCallback$Provision.p
rovision(ProvisionListenerStackCallback.java:108)
at com.google.inject.internal.ProvisionListenerStackCallback.provision(P
rovisionListenerStackCallback.java:55)
at com.google.inject.internal.ProviderInternalFactory.circularGet(Provid
erInternalFactory.java:68)
at com.google.inject.internal.InternalFactoryToInitializableAdapter.get(
InternalFactoryToInitializableAdapter.java:45)
at com.google.inject.internal.InjectorImpl$3$1.call(InjectorImpl.java:96
5)
at com.google.inject.internal.InjectorImpl.callInContext(InjectorImpl.ja
va:1011)
at com.google.inject.internal.InjectorImpl$3.get(InjectorImpl.java:961)
at com.google.inject.Scopes$1$1.get(Scopes.java:59)
at org.sonatype.guice.bean.locators.LazyBeanEntry.getValue(LazyBeanEntry
.java:83)
at org.sonatype.guice.plexus.locators.LazyPlexusBean.getValue(LazyPlexus
Bean.java:49)
at org.codehaus.plexus.DefaultPlexusContainer.lookup(DefaultPlexusContai
ner.java:253)
at org.codehaus.plexus.DefaultPlexusContainer.lookup(DefaultPlexusContai
ner.java:245)
at org.apache.maven.plugin.internal.DefaultMavenPluginManager.getConfigu
redMojo(DefaultMavenPluginManager.java:455)
at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(Default
BuildPluginManager.java:92)
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:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAcces
sorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
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: java.lang.ClassNotFoundException: org.codehaus.plexus.resource.loader
.ResourceNotFoundException
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)
... 54 more
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 1.106s
[INFO] Finished at: Thu Feb 28 13:01:48 IST 2013
[INFO] Final Memory: 6M/15M
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-eclipse-plugin:2.9
:eclipse (default-cli) on project CounterWebApp: Execution default-cli of goal o
rg.apache.maven.plugins:maven-eclipse-plugin:2.9:eclipse failed: A required clas
s was missing while executing org.apache.maven.plugins:maven-eclipse-plugin:2.9:
eclipse: org/codehaus/plexus/resource/loader/ResourceNotFoundException
[ERROR] -----------------------------------------------------
[ERROR] realm =    plugin>org.apache.maven.plugins:maven-eclipse-plugin:2.9
[ERROR] strategy = org.codehaus.plexus.classworlds.strategy.SelfFirstStrategy
[ERROR] urls[0] = file:/D:/M2_REPO/org/apache/maven/plugins/maven-eclipse-plugin
/2.9/maven-eclipse-plugin-2.9.jar
[ERROR] urls[1] = file:/D:/M2_REPO/junit/junit/3.8.1/junit-3.8.1.jar
[ERROR] urls[2] = file:/D:/M2_REPO/org/apache/maven/reporting/maven-reporting-ap
i/2.0.8/maven-reporting-api-2.0.8.jar
[ERROR] urls[3] = file:/D:/M2_REPO/org/apache/maven/doxia/doxia-sink-api/1.0-alp
ha-9/doxia-sink-api-1.0-alpha-9.jar
[ERROR] urls[4] = file:/D:/M2_REPO/commons-cli/commons-cli/1.0/commons-cli-1.0.j
ar
[ERROR] urls[5] = file:/D:/M2_REPO/org/codehaus/plexus/plexus-interactivity-api/
1.0-alpha-4/plexus-interactivity-api-1.0-alpha-4.jar
[ERROR] urls[6] = file:/D:/M2_REPO/commons-io/commons-io/1.4/commons-io-1.4.jar
[ERROR] urls[7] = file:/D:/M2_REPO/org/codehaus/plexus/plexus-archiver/1.0-alpha
-7/plexus-archiver-1.0-alpha-7.jar
[ERROR] urls[8] = file:/D:/M2_REPO/org/codehaus/plexus/plexus-utils/1.5.6/plexus
-utils-1.5.6.jar
[ERROR] urls[9] = file:/D:/M2_REPO/org/codehaus/plexus/plexus-interactivity-jlin
e/1.0-alpha-5/plexus-interactivity-jline-1.0-alpha-5.jar
[ERROR] urls[10] = file:/D:/M2_REPO/jline/jline/0.9.1/jline-0.9.1.jar
[ERROR] urls[11] = file:/D:/M2_REPO/org/apache/maven/maven-archiver/2.2/maven-ar
chiver-2.2.jar
[ERROR] urls[12] = file:/D:/M2_REPO/org/codehaus/plexus/plexus-resources/1.0-alp
ha-7/plexus-resources-1.0-alpha-7.jar
[ERROR] urls[13] = file:/D:/M2_REPO/biz/aQute/bndlib/0.0.145/bndlib-0.0.145.jar
[ERROR] urls[14] = file:/D:/M2_REPO/org/apache/maven/shared/maven-osgi/0.2.0/mav
en-osgi-0.2.0.jar
[ERROR] urls[15] = file:/D:/M2_REPO/org/eclipse/core/resources/3.3.0-v20070604/r
esources-3.3.0-v20070604.jar
[ERROR] Number of foreign imports: 1
[ERROR] import: Entry[import  from realm ClassRealm[maven.api, parent: null]]
[ERROR]
[ERROR] -----------------------------------------------------: org.codehaus.plex
us.resource.loader.ResourceNotFoundException
[ERROR] -> [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/PluginContainerException

Je suis le tutoriel suivant : http://www.mkyong.com/maven/how-to-create-a-web-application-project-with-maven/.

S'il vous plaît laissez-moi savoir comment je peux résoudre l'erreur.