IDE maven项目由JDK17切换到JDK1.8

编辑maven项目中的pom.xml

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xmlns="http://maven.apache.org/POM/4.0.0"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>cn.webrx</groupId>
    <artifactId>09iojdk8</artifactId>
    <version>1.0</version>

    <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>
        <java.version>1.8</java.version>
    </properties>

    <build>
        <finalName>${project.artifactId}</finalName>
        <testSourceDirectory>src/test/java</testSourceDirectory>
        <sourceDirectory>src/main/java</sourceDirectory>
        <plugins>
            <!-- 在项目指定jdk版本信息 -->
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>3.8.1</version>
                <configuration>
                    <source>1.8</source>
                    <target>1.8</target>
                    <encoding>UTF-8</encoding>
                </configuration>
            </plugin>
        </plugins>
    </build>
</project>

d:/maven/conf/settings.xml

<?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">
 <localRepository>D:/maven/repo</localRepository>
 <mirrors>
  <!-- 阿里镜像仓库 -->
  <mirror>
  <id>alimaven</id>
  <name>aliyun maven</name>
  <url>http://maven.aliyun.com/nexus/content/groups/public/</url>
  <mirrorOf>central</mirrorOf>
  </mirror>
 </mirrors>
 
 <profiles>
     <!-- maven项目全局默认配置jdk版本信息  -->
  <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>
</settings>