Failed to execute goal org.apache.maven.plugins:maven-clean-plugin:2.5:clean (default-clean) on project bos-web: Failed to clean project: Failed to delete G:\项目\自己写的\bos\bos-parent\bos-web\target\tomcat\logs\access_log.2019-03-08 -> [Help 1] 出现这样的错误一般是因为由于自己之前的项目没有关闭,导致端口被占用。将之前的项目关闭然后重新启动即可。