记录一次错误点击maven clean错误
错误信息：
error executing Maven 1 problem was encountered while building the effective settings 'mirrors.mirror.url' for alimaven is missing @D:xxxxapache-maven-x.x.xconfsettings.xml
解决方法：
将settings-xxx的名称修改成settings.xml即可，换句话说就是保存一个settings.xml即可，且名字为settings.xml。