settings.xml exists in two places:
1. Installation place: $M2_HOME/conf/settings.xml

2. User’s directory: ${user.home}/.m2/settings.xml

The former is also called global configuration, and the latter is called user configuration. If both exist, their contents will be merged, and user-scoped settings.xml takes precedence.

If you occasionally need to create user-scoped settings, you can simply copy the settings from the Maven installation path to the directory ${user.home}/.m2. The default settings.xml of Maven is a template that contains comments and examples.

It is found that the default setting configuration of many third-party projects is the user directory/.m2/settings.xml

So for convenience, you need to create the .m2 folder yourself and configure settings.xml in it

The online tutorial is to use the command

mvn help:system

After using it, it was found that the .m2 folder was not generated

After searching a lot, I found that the local storage in the default maven must be set as the default, that is, do not set

D:\maven\repository
This line is commented or uncommented, and then execute the mvn help:system command.

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