Maven JDK版本配置

<profiles>
  <profile>
    <id>jdk-1.8</id>
    <activation>
      <activeByDefault>true></activeByDefault>
      <jdk>1.8</jdk>
    </activation>
    <properties>
      <maven.compiler.source>1.8</maven.compiler.source>
      <maven.compiler.target>1.8</maven.compiler.target>
      <maven.compiler.compilerVersion>1.8</maven.compiler.compilerVersion>
    </properties>
  </profile>
</profiles>