Execution default-testResources of goal org.apache.maven.plugins:maven-resources-plugin:2.5:testReso

对于这个问题：

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:2.5strategy = org.codehaus.plexus.classworlds.strategy.SelfFirstStrategyurls[0] = file:/E:/maven-repository/repository/org/apache/maven/plugins/maven-resources-plugin/2.5/maven-resources-plugin-2.5.jarurls[1] = file:/E:/maven-repository/repository/org/apache/maven/reporting/maven-reporting-api/2.0.6/maven-reporting-api-2.0.6.jarurls[2] = file:/E:/maven-repository/repository/org/apache/maven/doxia/doxia-sink-api/1.0-alpha-7/doxia-sink-api-1.0-alpha-7.jarurls[3] = file:/E:/maven-repository/repository/commons-cli/commons-cli/1.0/commons-cli-1.0.jarurls[4] = file:/E:/maven-repository/repository/org/codehaus/plexus/plexus-interactivity-api/1.0-alpha-4/plexus-interactivity-api-1.0-alpha-4.jarurls[5] = file:/E:/maven-repository/repository/junit/junit/3.8.1/junit-3.8.1.jarurls[6] = file:/E:/maven-repository/repository/org/codehaus/plexus/plexus-utils/2.0.5/plexus-utils-2.0.5.jarurls[7] = file:/E:/maven-repository/repository/org/apache/maven/shared/maven-filtering/1.0/maven-filtering-1.0.jarurls[8] = file:/E:/maven-repository/repository/org/codehaus/plexus/plexus-interpolation/1.13/plexus-interpolation-1.13.jarNumber of foreign imports: 4import: 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)

采用强行打包的方式：（参考 http://www.iteye.com/problems/86341）[/code] 
<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/xsd/maven-4.0.0.xsd">   <modelVersion>4.0.0</modelVersion>  <groupId>hadoop.mr</groupId>  <artifactId>datacount</artifactId>  <version>0.0.1-SNAPSHOT</version>  <build>   <plugins>        <plugin>     			<groupId>org.apache.maven.plugins</groupId>     			<artifactId>maven-resources-plugin</artifactId>     			<version>2.5.0</version>     	<configuration>         <encoding>utf-8</encoding>     </configuration>  </plugin>     </plugins>  </build>
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