maven下载spring-boot-maven-plugin失败

1.先检查仓库配置setting文件，配置成阿里云的仓库

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

2. 然后从仓库找到最新的额plugin依赖并添加进入，然后导入，大工告成

<dependency>
   <groupId>org.springframework.boot</groupId>
   <artifactId>spring-boot-maven-plugin</artifactId>
   <version>2.4.6</version>
   <type>maven-plugin</type>
</dependency>