There are many ways to install IDE plugins.
One: Online installation
by Help-->install New Software Way, enter the HTTP address to install, simple and easy to operate, but also the pros and cons, is the slow download, or sometimes simply do not search for the plug-in to install. Use the first way to install, enter the HTTP address: http://m2eclipse.sonatype.org/sites/m2e, tick the option, and wait for it to download and install, and then restart eclipse after the completion.
Second: Use the offline plug-in package. One way is to install the plugin through the link file, and the other is a straightforward copy (directly copy the relevant files into the corresponding folder).
Link mode (custom mode):
1. Create two folders in the root directory of your eclipse installation: Links,mavenplugins (the folder name is customizable), eclipse-maven3-plugin.7z extracted features and plugins folder into the Mavenplugins folder (must be so, note the folder after the decompression of the nested situation). 3. In the links directory, create a maven.link (file name customizable) file, open and enter: Path=mavenplugins folder absolute Path (Note that the folder path is "/" or "\ \" instead of "\"). 4. Restart Eclipse, after launch you open window---> Preferences will find one more option Maven, indicating that the installation was successful.
Copy method
Import the unpacked subfolder features and plugins jar package files into the features and plugins folders in the Eclipse installation directory, respectively, and then restart Eclipse to see the MAVEN options in preferences. That is, the MAVEN plugin is configured successfully.
maven-Installing the Maven plugin in eclipse