我的pom.xml中存在以下依赖项问题，其中org.springframework.version = 3.1.0.RELEASE：
<!-- Spring MVC framework -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>${org.springframework.version}</version>
</dependency>
当我执行命令行'mvn clean install'时，我出现以下错误：
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 1.052s
[INFO] Finished at: Sat Dec 07 15:49:04 CET 2013
[INFO] Final Memory: 4M/15M
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-clean-plugin:2.4.1:clean (default-clean) on project myGoogleAppEngine: Failed to clean project: Failed to delete C:\EclipseProjects\myGoogleAppEngine\target\myGoogleAppEngine-0.0.1-SNAPSHOT\WEB-INF\lib\spring-webmvc-3.1.0.RELEASE.jar -> [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/MojoExecutionException
通过查看http://mvnrepository.com/artifact/org.springframework/spring-webmvc/3.1.0.RELEASE，我的依赖项中没有任何错误。
我试图关闭项目和Eclipse并再次打开Eclipse但它不起作用。
你有解决方案吗？
谢谢