Maven clean命令不能执行问题Failed to execute goal org.apache.maven.plugins:maven-clean-plugin:2.5:clean (default-clean) on project

执行clean tomcat7:run时Failed to execute goal org.apache.maven.plugins:maven-clean-plugin:2.5:clean (default-clean) on project,如下图

原因在于之前启用了maven插件进行执行clean tomcat7:run命令，还未关闭再次运行时报此错误，关闭正在运行的tomcat，再执行clean tomcat7:run即可