高版本的spring-context不能用junit

Question

问题遇到的现象和发生背景

为什么高版本的spring-context不能用junit，在低版本中可以正常使用

遇到的现象和发生背景，请写出第一个错误信息

org.junit.platform.commons.JUnitException: TestEngine with ID 'junit-jupiter' failed to discover tests

---

Caused by: org.junit.platform.commons.JUnitException: ClassSelector [className = 'spring.TestIOC'] resolution failed

---

Caused by: java.lang.UnsupportedClassVersionError: org/springframework/context/ApplicationContext has been compiled by a more recent version of the Java Runtime (class file version 61.0), this version of the Java Runtime only recognizes class file versions up to 55.0 

<!-- https://mvnrepository.com/artifact/org.springframework/spring-context -->
<dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-context</artifactId>
    <version>5.3.1</version>
</dependency>

在5.几的版本下就可以，而6.几的版本都不行

Answer 1

• 首先要看你的junit版本是啥， 从下面这个报错看，是 JDK版本不适配，编译的版本是 61【JDK17】， 运行环境却是 55【JDK11】

Caused by: java.lang.UnsupportedClassVersionError: org/springframework/context/ApplicationContext has been compiled by a more recent version of the Java Runtime (class file version 61.0), this version of the Java Runtime only recognizes class file versions up to 55.0

• JDK版本和字节码版本关系