Maven soucis avec le .pom

bonjour tout le monde j'ai toujours un soucis avec mon .pom , systématiquement quand je créé un projet , j'ai un message d'erreure :

Multiple annotations found at this line:
- Execution default-testResources of goal org.apache.maven.plugins:maven-resources-plugin:2.5:testResources failed: A required class was missing while executing org.apache.maven.plugins:maven-resources-plugin:
2.5:testResources: org/codehaus/plexus/util/StringUtils ----------------------------------------------------- realm = plugin>org.apache.maven.plugins:maven-resources-plugin:2.5 strategy =
org.codehaus.plexus.classworlds.strategy.SelfFirstStrategy urls[0] = file:/C:/Users/ANONYMUS/.m2/repository/org/apache/maven/plugins/maven-resources-plugin/2.5/maven-resources-plugin-2.5.jar urls[1] = file:/C:/Users/
ANONYMUS/.m2/repository/org/apache/maven/reporting/maven-reporting-api/2.0.6/maven-reporting-api-2.0.6.jar urls[2] = file:/C:/Users/ANONYMUS/.m2/repository/org/apache/maven/doxia/doxia-sink-api/1.0-alpha-7/doxia-sink-
api-1.0-alpha-7.jar urls[3] = file:/C:/Users/ANONYMUS/.m2/repository/commons-cli/commons-cli/1.0/commons-cli-1.0.jar urls[4] = file:/C:/Users/ANONYMUS/.m2/repository/org/codehaus/plexus/plexus-interactivity-api/1.0-alpha-4/
plexus-interactivity-api-1.0-alpha-4.jar urls[5] = file:/C:/Users/ANONYMUS/.m2/repository/junit/junit/3.8.1/junit-3.8.1.jar urls[6] = file:/C:/Users/ANONYMUS/.m2/repository/org/codehaus/plexus/plexus-utils/2.0.5/plexus-utils-2.0.5.jar
urls[7] = file:/C:/Users/ANONYMUS/.m2/repository/org/apache/maven/shared/maven-filtering/1.0/maven-filtering-1.0.jar urls[8] = file:/C:/Users/ANONYMUS/.m2/repository/org/codehaus/plexus/plexus-interpolation/1.13/plexus-
interpolation-1.13.jar Number of foreign imports: 4 import: Entry[import org.sonatype.plexus.build.incremental from realm ClassRealm[plexus.core, parent: null]] import: Entry[import org.codehaus.plexus.util.Scanner from realm
ClassRealm[plexus.core, parent: null]] import: Entry[import org.codehaus.plexus.util.AbstractScanner from realm ClassRealm[plexus.core, parent: null]] import: Entry[import from realm ClassRealm[maven.api, parent: null]]
----------------------------------------------------- (org.apache.maven.plugins:maven-resources-plugin:2.5:testResources:default-testResources:process-test-resources)
- Execution default-resources of goal org.apache.maven.plugins:maven-resources-plugin:2.5:resources failed: A required class was missing while executing org.apache.maven.plugins:maven-resources-plugin:2.5:resources: org/
codehaus/plexus/util/StringUtils ----------------------------------------------------- realm = plugin>org.apache.maven.plugins:maven-resources-plugin:2.5 strategy = org.codehaus.plexus.classworlds.strategy.SelfFirstStrategy urls[0] =
file:/C:/Users/ANONYMUS/.m2/repository/org/apache/maven/plugins/maven-resources-plugin/2.5/maven-resources-plugin-2.5.jar urls[1] = file:/C:/Users/ANONYMUS/.m2/repository/org/apache/maven/reporting/maven-reporting-
api/2.0.6/maven-reporting-api-2.0.6.jar urls[2] = file:/C:/Users/ANONYMUS/.m2/repository/org/apache/maven/doxia/doxia-sink-api/1.0-alpha-7/doxia-sink-api-1.0-alpha-7.jar urls[3] = file:/C:/Users/ANONYMUS/.m2/repository/
commons-cli/commons-cli/1.0/commons-cli-1.0.jar urls[4] = file:/C:/Users/ANONYMUS/.m2/repository/org/codehaus/plexus/plexus-interactivity-api/1.0-alpha-4/plexus-interactivity-api-1.0-alpha-4.jar urls[5] = file:/C:/Users/
ANONYMUS/.m2/repository/junit/junit/3.8.1/junit-3.8.1.jar urls[6] = file:/C:/Users/ANONYMUS/.m2/repository/org/codehaus/plexus/plexus-utils/2.0.5/plexus-utils-2.0.5.jar urls[7] = file:/C:/Users/ANONYMUS/.m2/repository/org/
apache/maven/shared/maven-filtering/1.0/maven-filtering-1.0.jar urls[8] = file:/C:/Users/ANONYMUS/.m2/repository/org/codehaus/plexus/plexus-interpolation/1.13/plexus-interpolation-1.13.jar Number of foreign imports: 4 import:
Entry[import org.sonatype.plexus.build.incremental from realm ClassRealm[plexus.core, parent: null]] import: Entry[import org.codehaus.plexus.util.Scanner from realm ClassRealm[plexus.core, parent: null]] import: Entry[import
org.codehaus.plexus.util.AbstractScanner from realm ClassRealm[plexus.core, parent: null]] import: Entry[import from realm ClassRealm[maven.api, parent: null]] -----------------------------------------------------
(org.apache.maven.plugins:maven-resources-plugin:2.5:resources:default-resources:process-resources)


si quelqu'un pouvait m'aider c serais sympa merci beaucoup.