Reloading reasons: replacing the old version!
First, delete the folder maven
Second, delete the local repository file
Third, relevant before you delete items (not required)
Fourth, download a new web site
https://maven.apache.org/download.cgi
But here only the latest version, how to download an older version of maven, need to turn to the bottom of the URL
Previous Releases
Click archives
Select the required version, such as 3.6.0
Click binaries
Click apache-maven-3.6.0-bin.zip is that of 8.7M
Fifth, after the installation is complete catalog is subject to change, modify environment variables
Of course, basically there will be changes, unless manually.
Sixth, reinstall, see Maven installation and configuration IDEA
In fact, there is always a lot of problems when you configure the environment, because most of them are his own stupid @ - @
For example, this time I forget to change the setting in the mirror, cause I did not sleep at noon!
