1.打开IDEA点击File->Settings，如下所示

filesettings.png

2.找到Build，Execution，Deployment -> Build Tools -> Maven 然后勾选上 User settings file -> Override、Local repository -> Override
去掉Use settings from .mvn/maven.config的勾，如下所示

maven配置国内源.png

3.在User settings file配置的目录中的settings.xml（如果目录下没有settings.xml则新建一个settings.xml文件）添加上如下的国内源，其中一个即可，如下所示

settingsxml.png

<settings xmlns="http://maven.apache.org/SETTINGS/1.0.0"
      xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
      xsi:schemaLocation="http://maven.apache.org/SETTINGS/1.0.0
                          https://maven.apache.org/xsd/settings-1.0.0.xsd">

      <mirrors>
        <mirror>  
            <id>alimaven</id>  
            <name>aliyun maven</name>  
            <url>http://maven.aliyun.com/nexus/content/groups/public/</url>  
            <mirrorOf>central</mirrorOf>          
        </mirror>  

        <mirror>
            <id>huaweicloud</id>
            <mirrorOf>*</mirrorOf>
            <name>huaweicloud</name>
            <url>https://mirrors.huaweicloud.com/repository/maven/</url>
        </mirror>

        <mirror>
            <id>tencent</id>
            <mirrorOf>*</mirrorOf>
            <name>tencent</name>
            <url>http://mirrors.cloud.tencent.com/nexus/repository/maven-public/</url>
        </mirror>

        <mirror>
            <id>163</id>
            <mirrorOf>*</mirrorOf>
            <name>163</name>
            <url>http://mirrors.163.com/maven/repository/maven-public/</url>
        </mirror>

      </mirrors>
</settings>

4.最后在IDEA点击Apply、点击ok即可，如下所示

点击Apply.png

5.然后再鼠标右键pom.xml，点击Maven->Reload project重新加载maven源试试，应该就恢复正常