Failed to execute goal org.apache.maven.plugins:maven-clean-plugin:2.5:clean (default-

Maven项目报错：Failed to execute goal org.apache.maven.plugins:maven-clean-plugin:2.5:clean (default-clea 

[ERROR] Failed to execute goal org.apache.maven.plugins:maven-clean-plugin:2.5:clean (default-clean) on project study-search: Failed to clean project: Failed to delete D:\Pxxtarget\tomcat\logs\access_log.2019-4-7
[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.
 
本来是执行clean tomcat7:run命令的，结果执行clean的时候就报错了，不能清除log,

那就是log被某个程序占用了，所以不能清除，

启动的程序没有关闭，terminate.再次启动，