报错：Unsupported class file major version 61

背景：spring 框架整合 junit 做测试

依赖：

<dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-test</artifactId>
    <version>5.2.10.RELEASE</version>
</dependency>
<dependency>
    <groupId>junit</groupId>
    <artifactId>junit</artifactId>
    <version>4.13.2</version>
    <scope>test</scope>
</dependency>

父模块 pom 配置：

<properties>
    <maven.compiler.source>17</maven.compiler.source>
    <maven.compiler.target>17</maven.compiler.target>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
</properties>

触发代码：

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(classes = SpringConfig.class)
public class AccountServiceTestCase {
    @Autowired
    private AccountService accountService;

    @Test
    public void testFindById(){
        Account ac = accountService.findById(2);
        System.out.println(ac.toString());
    }

    @Test
    public void testFindAll(){
        List<Account> all = accountService.findAll();
        System.out.println(all.toString());
    }

}

报错内容：

Unsupported class file major version 61

解决：修改父模块的 properties 参数，降到 15：

<properties>
    <maven.compiler.source>15</maven.compiler.source>
    <maven.compiler.target>15</maven.compiler.target>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
</properties>