Junit测试出现异常：java.lang.NoSuchMethodError: org.junit.platform.commons.util.ReflectionUtils

1、背景:Junit测试出现异常：Exception in thread "main" java.lang.NoSuchMethodError: org.junit.platform.commons.util.2、现象:Exception in thread "main" java.lang.NoSuchMethodError: org.junit.platform.commons...

job_wangwei

2720人浏览 · 2020-04-23 15:44:16

job_wangwei · 2020-04-23 15:44:16 发布

1、背景:

Junit测试出现异常：Exception in thread "main" java.lang.NoSuchMethodError: org.junit.platform.commons.util.

2、现象:

Exception in thread "main" java.lang.NoSuchMethodError: org.junit.platform.commons.util.ReflectionUtils.getDefaultClassLoader()Ljava/lang/ClassLoader;
    at org.junit.platform.launcher.core.ServiceLoaderTestEngineRegistry.loadTestEngines(ServiceLoaderTestEngineRegistry.java:30)
    at org.junit.platform.launcher.core.LauncherFactory.create(LauncherFactory.java:53)
    at com.intellij.junit5.JUnit5IdeaTestRunner.createListeners(JUnit5IdeaTestRunner.java:39)
    at com.intellij.rt.execution.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:49)
    at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:242)
    at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:70)

Process finished with exit code 1
Empty test suite.

3、原因：

不能同时用Junit4和Junit5，junit-jupiter-api在Junit5中使用
4、解决办法:

1)、排除掉 junit-jupiter-api 依赖

<dependency>
	<groupId>org.springframework.boot</groupId>
	<artifactId>spring-boot-starter-test</artifactId>
	<scope>test</scope>
	<exclusions>
		<exclusion>
			<groupId>org.junit.jupiter</groupId>
			<artifactId>junit-jupiter-api</artifactId>
		</exclusion>
	</exclusions>
</dependency>

2)、官方建议如果跑Junit5建议使用IDEA 2017.3之后的版本.因为较之前的版本还不支持Junit5, 查看自己本地的IDEA为2017.1的版本, 后升级2017.3.5版本后, 在执行Junit5后问题解决.

参考资料: Junit5官方guide https://junit.org/junit5/docs/current/user-guide/#running-tests-ide