2.2.6.RELEASE版本的springboot 单元测试报错 java.lang.NoClassDefFoundError: org/junit/platform/engine/support/

最新推荐文章于 2024-09-04 10:58:32 发布

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本文介绍了在升级SpringBoot项目到2.2.6版本并尝试使用JUnit5进行单元测试时遇到的NoClassDefFoundError，重点讲述了如何处理@RunWith注解与默认JUnit5版本不兼容的问题，包括删除不必要的依赖和配置Spring Boot测试套件。

新建了一个2.2.6.RELEASE版本的springboot项目，在用单元测试的时候，发现没有@RunWith注解，于是，就添加了

<dependency>

<groupId>junit</groupId>

<artifactId>junit</artifactId>

<scope>test</scope>

</dependency>

好，现在有这个注解了，运行测试方法，报错java.lang.NoClassDefFoundError: org/junit/platform/engine/support/filter/ExclusionReasonConsumingFilter

警告: TestEngine with ID 'junit-vintage' failed to discover tests

java.lang.NoClassDefFoundError: org/junit/platform/engine/support/filter/ExclusionReasonConsumingFilter

at org.junit.vintage.engine.discovery.VintageDiscoverer.createTestClassPredicate(VintageDiscoverer.java:83)

at org.junit.vintage.engine.discovery.VintageDiscoverer.collectTestClasses(VintageDiscoverer.java:61)

at org.junit.vintage.engine.discovery.VintageDiscoverer.discover(VintageDiscoverer.java:51)

at org.junit.vintage.engine.VintageTestEngine.discover(VintageTestEngine.java:65)

at org.junit.platform.launcher.core.DefaultLauncher.discoverEngineRoot(DefaultLauncher.java:130)

at org.junit.platform.launcher.core.DefaultLauncher.discoverRoot(DefaultLauncher.java:117)

at org.junit.platform.launcher.core.DefaultLauncher.discover(DefaultLauncher.java:82)

at com.intellij.junit5.JUnit5IdeaTestRunner.startRunnerWithArgs(JUnit5IdeaTestRunner.java:48)

at com.intellij.rt.execution.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:47)

at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:242)

at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:70)

Caused by: java.lang.ClassNotFoundException: org.junit.platform.engine.support.filter.ExclusionReasonConsumingFilter

at java.net.URLClassLoader.findClass(URLClassLoader.java:382)

at java.lang.ClassLoader.loadClass(ClassLoader.java:424)

at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:349)

at java.lang.ClassLoader.loadClass(ClassLoader.java:357)

... 11 more

其实实际原因是，这个版本的springboot此时默认的是JUnit5，而@RunWith是junit4里面的东西。解决方式有两种，要么你不要用这个@RunWith注解，要么你把pom文件里面的那个org.junit.vintage注释掉。

<dependency>

<groupId>org.springframework.boot</groupId>

<artifactId>spring-boot-starter-test</artifactId>

<scope>test</scope>

</dependency>

完整代码可看