idea修改language level版本实现方式

<?xml version="1.0" encoding="UTF-8"?>
<settings xmlns="http://maven.apache.org/SETTINGS/1.2.0"
          xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
          xsi:schemaLocation="http://maven.apache.org/SETTINGS/1.2.0 https://maven.apache.org/xsd/settings-1.2.0.xsd">
  <pluginGroups>
  </pluginGroups>
  
  <proxies>
  </proxies>
  
  <servers>
  </servers>
  
 <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>aliyun</id>
      <mirrorOf>central</mirrorOf>
      <name>aliyun-public</name>
      <url>https://maven.aliyun.com/repository/public/</url>
    </mirror>
    <mirror>
      <id>aliyun-spring</id>
      <mirrorOf>spring</mirrorOf>
      <name>aliyun-spring</name>
      <url>https://maven.aliyun.com/repository/spring</url>
    </mirror>

    <!-- 中央仓库在中国的镜像 -->
    <mirror>
      <id>maven.net.cn</id>
      <name>one of the central mirrors in china</name>
      <url>http://maven.net.cn/content/groups/public/</url>
      <mirrorOf>central</mirrorOf>
    </mirror>
    <!-- 中央仓库1 -->
    <mirror>
        <id>repo1</id>
        <mirrorOf>central</mirrorOf>
        <name>Human Readable Name for this Mirror.</name>
        <url>https://repo1.maven.org/maven2/</url>
    </mirror>

  </mirrors>
  
  <!-- 以下是JDK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>
      <profile>
          <id>jdk-17</id>
          <activation>
              <activeByDefault>true</activeByDefault>
              <jdk>17</jdk>
          </activation>
          <properties>
              <maven.compiler.source>17</maven.compiler.source>
              <maven.compiler.target>17</maven.compiler.target>
              <maven.compiler.compilerVersion>17</maven.compiler.compilerVersion>
          </properties>
      </profile>
  </profiles>
  <activeProfiles>
<!--    <activeProfile>jdk-1.8</activeProfile>-->
      <activeProfile>jdk-17</activeProfile>
  </activeProfiles>


</settings>