Cannot resolve plugin org.apache.maven.plugins:maven-compiler-plugin:3.8.1

Cannot resolve plugin
org.apache.maven.plugins:maven-compiler-plugin:3.8.1

【解决办法】

1. 检查maven路径是否一致

2. 路径一致的话，更改配置文件settings.xml的镜像源。
   添加代码到 <mirrors>

<!-- 阿里镜像 -->
<mirror>
    <id>alimaven</id>
    <mirrorOf>central</mirrorOf>
    <name>aliyun maven</name>
    <url>http://maven.aliyun.com/nexus/content/repositories/central/</url>
</mirror>
<mirror>
    <id>alimaven</id>
    <name>aliyun maven</name>
    <url>http://maven.aliyun.com/nexus/content/groups/public/</url>
    <mirrorOf>central</mirrorOf>
</mirror>
<mirror>
    <id>central</id>
    <name>Maven Repository Switchboard</name>
    <url>http://repo1.maven.org/maven2/</url>
    <mirrorOf>central</mirrorOf>
</mirror>
<mirror>
    <id>repo2</id>
    <mirrorOf>central</mirrorOf>
    <name>Human Readable Name for this Mirror.</name>
    <url>http://repo2.maven.org/maven2/</url>
</mirror>
<mirror>
    <id>ibiblio</id>
    <mirrorOf>central</mirrorOf>
    <name>Human Readable Name for this Mirror.</name>
    <url>http://mirrors.ibiblio.org/pub/mirrors/maven2/</url>
</mirror>
<mirror>
    <id>jboss-public-repository-group</id>
    <mirrorOf>central</mirrorOf>
    <name>JBoss Public Repository Group</name>
    <url>http://repository.jboss.org/nexus/content/groups/public</url>
</mirror>
<mirror>
    <id>google-maven-central</id>
    <name>Google Maven Central</name>
    <url>https://maven-central.storage.googleapis.com
    </url>
    <mirrorOf>central</mirrorOf>
</mirror>
<!-- 中央仓库在中国的镜像 -->
<mirror>
    <id>maven.net.cn</id>
    <name>oneof the central mirrors in china</name>
    <url>http://maven.net.cn/content/groups/public/</url>
    <mirrorOf>central</mirrorOf>
</mirror>

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