电脑重启后不知道为啥eclipse中的maven不能用了，pom文件一直标红，报以下毛病：
Execution default-cli of goal org.apache.maven.plugins:maven-resources-plugin:2.5:copy-resources failed: A required class was missing while executing org.apache.maven.plugins:maven-resources-plugin:2.5:copy-resources: org/apache/maven/shared/filtering/MavenFilteringExceptionExec
