问题：

No valid Maven installation found. Either set the home directory in the configuration dialog or set the M2_HOME environment variable on your system.

【Maven】No valid Maven installation found. Either set the home directory in the configuration dialog_链接地址

原因：

IDEA的maven地址设置出错，系统找不到指定的maven路径

解决：

setting---->maven修改正确的maven链接地址。

【Maven】No valid Maven installation found. Either set the home directory in the configuration dialog_ide_02


重新clean

【Maven】No valid Maven installation found. Either set the home directory in the configuration dialog_链接地址_03