环境 IDEA 2019.3 OS：macOS 15 在 test 目录下执行单元测试时报错 java.lang.NoClassDefFoundError: org/junit/platform.../launcher/core/LauncherFactory at org.eclipse.jdt.internal.junit5.runner.JUnit5TestLoader....(RemoteTestRunner.java:205) Caused by: java.lang.ClassNotFoundException: org.junit.platform.launcher.core.LauncherFactory...) ... 11 more 添加 junit-platform-launcher 依赖即可。... org.junit.platform junit-platform-launcher
java.lang.NoClassDefFoundError: org/junit/platform/launcher/core/LauncherFactory at org.eclipse.jdt.internal.junit5...(RemoteTestRunner.java:205) Caused by: java.lang.ClassNotFoundException: org.junit.platform.launcher.core.LauncherFactory...) ... 11 more 添加 junit-platform-launcher 依赖即可。... org.junit.platformgroupId> junit-platform-launcherartifactId> dependency...> 原因 因为 JUnit 5 = JUnit Platform + JUnit Jupiter + JUnit Vintage JUnit Platform是提供了运行（测试框架）环境的平台 JUnit
(DefaultLauncher.java:229) ~[junit-platform-launcher-1.5.2.jar:1.5.2] 90 at org.junit.platform.launcher.core.DefaultLauncher.lambda...(DefaultLauncher.java:211) ~[junit-platform-launcher-1.5.2.jar:1.5.2] 92 at org.junit.platform.launcher.core.DefaultLauncher.execute...(DefaultLauncher.java:191) ~[junit-platform-launcher-1.5.2.jar:1.5.2] 93 at org.junit.platform.launcher.core.DefaultLauncher.execute...(DefaultLauncher.java:229) ~[junit-platform-launcher-1.5.2.jar:1.5.2] 181 at org.junit.platform.launcher.core.DefaultLauncher.lambda...(DefaultLauncher.java:211) ~[junit-platform-launcher-1.5.2.jar:1.5.2] 183 at org.junit.platform.launcher.core.DefaultLauncher.execute
一个可行的办法就是在你的 POM.xml 文件中添加 junit-jupiter-api, junit-jupiter-params, junit-jupiter-engine, 和 junit-platform-launcher...需要添加的代码如下： org.junit.jupiter junit-jupiter-api</artifactId...如果这个时候，你尝试运行测试的话，你将会得到 NoClassDefFoundError 错误： [ERROR] java.lang.NoClassDefFoundError: org/junit/platform...上面的情况的结果就是 JUnit launcher 尝试用老版的 JUnit 版本中不存在的类来运行。 知道上面的原因后，我们下面来看看可以使用的一些修复方法。...> 上面的配置将会包含 junit-jupiter-api, junit-jupiter-params, 和 junit-jupiter-engine. junit-platform-launcher
\junit\platform\junit-platform-launcher\1.10.2\junit-platform-launcher-1.10.2.jar;C:\Users\North\.m2\...(DefaultLauncher.java:103) ~[junit-platform-launcher-1.10.2.jar:1.10.2] at org.junit.platform.launcher.core.DefaultLauncher.execute...(DefaultLauncher.java:85) ~[junit-platform-launcher-1.10.2.jar:1.10.2] at org.junit.platform.launcher.core.DelegatingLauncher.execute...(DefaultLauncher.java:103) ~[junit-platform-launcher-1.10.2.jar:1.10.2] at org.junit.platform.launcher.core.DefaultLauncher.execute...(DefaultLauncher.java:85) ~[junit-platform-launcher-1.10.2.jar:1.10.2] at org.junit.platform.launcher.core.DelegatingLauncher.execute
导致报错如下， java.lang.NoClassDefFoundError: org/springframework/core/ErrorCoded at java.lang.ClassLoader.defineClass1...加入后继续报另一个错 Exception in thread "main" java.lang.NoClassDefFoundError: org/springframework/util/unit/DataSize...只剩下spring boot的依赖 继续报错 java.lang.NoClassDefFoundError: org/springframework/boot/bind/RelaxedPropertyResolver...$3.run(ParentRunner.java:290) [junit-4.12.jar:4.12] at org.junit.runners.ParentRunner$1.schedule(...:288) [junit-4.12.jar:4.12] at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58) [junit
\2.2\hamcrest-2.2.jar;D:\apache\maven\repository\org\junit\jupiter\junit-jupiter\5.8.2\junit-jupiter-...5.8.2.jar;D:\apache\maven\repository\org\junit\jupiter\junit-jupiter-api\5.8.2\junit-jupiter-api-5.8.2...repository\org\junit\platform\junit-platform-commons\1.8.2\junit-platform-commons-1.8.2.jar;D:\apache...\org\junit\platform\junit-platform-engine\1.8.2\junit-platform-engine-1.8.2.jar;D:\apache\maven\repository...- Application run failed java.lang.NoClassDefFoundError: org/springframework/boot/Bootstrapper at java.lang.ClassLoader.defineClass1
; 2 3 import org.junit.Test; 4 import org.junit.runner.RunWith; 5 import org.springboot.tentent.controller.SampleController...Test的时候，报如下所示的错误： 1 java.lang.NoClassDefFoundError: org/junit/platform/launcher/core/LauncherFactory...2 at org.eclipse.jdt.internal.junit5.runner.JUnit5TestLoader....) 13 Caused by: java.lang.ClassNotFoundException: org.junit.platform.launcher.core.LauncherFactory 14...JUnit Platform是提供了运行（测试框架）环境的平台，JUnit Jupiter 是新的Junit5（子项目提供了一个基于平台测试运行Jupiter的测试引擎），JUnit Vintage提供了
:54) at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java...:147) at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java...:127) at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java...:54) at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:114) at org.junit.platform.launcher.core.DefaultLauncher.execute...(DefaultLauncherSession.java:86) at org.junit.platform.launcher.core.SessionPerRequestLauncher.execute
:54) at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java...:107) at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java...:67) at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java...:52) at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:114) at org.junit.platform.launcher.core.DefaultLauncher.execute...(DefaultLauncherSession.java:86) at org.junit.platform.launcher.core.SessionPerRequestLauncher.execute
(DefaultLauncher.java:229) ~[junit-platform-launcher-1.5.2.jar:1.5.2] 133 at org.junit.platform.launcher.core.DefaultLauncher.lambda...(DefaultLauncher.java:211) ~[junit-platform-launcher-1.5.2.jar:1.5.2] 135 at org.junit.platform.launcher.core.DefaultLauncher.execute...(DefaultLauncher.java:191) ~[junit-platform-launcher-1.5.2.jar:1.5.2] 136 at org.junit.platform.launcher.core.DefaultLauncher.execute...(DefaultLauncher.java:229) ~[junit-platform-launcher-1.5.2.jar:1.5.2] 111 at org.junit.platform.launcher.core.DefaultLauncher.lambda...(DefaultLauncher.java:229) ~[junit-platform-launcher-1.5.2.jar:1.5.2] 210 at org.junit.platform.launcher.core.DefaultLauncher.lambda
概述 前不久，打开以前的Android项目，报了一个 错： Exception in thread “main” Java.lang.NoClassDefFoundError: junit/textui.../ResultPrinter ，详细信息如下： Exception in thread "main" java.lang.NoClassDefFoundError: junit/textui/ResultPrinter...com.intellij.rt.execution.application.AppMain.main(AppMain.java:122) Caused by: java.lang.ClassNotFoundException: junit.textui.ResultPrinter...java.NET.URLClassLoader.findClass(URLClassLoader.java:381) at java.lang.ClassLoader.loadClass(ClassLoader.java:424) at sun.misc.Launcher...$AppClassLoader.loadClass(Launcher.java:331) at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
org.junit.platform junit-platform-launcher...我们下面来看一下： 所有组件介绍 JUnit Platform Group ID：org.junit.platform Version：1.3.2 Artifact IDs： junit-platform-commons...有关详细信息，请参阅Console Launcher。 junit-platform-engine 测试引擎的公共API。有关详细信息，请参阅插入自己的测试引擎。...junit-platform-launcher 用于配置和启动test plans的公共API - 通常由IDE和构建工具使用。...有关详细信息，请参阅JUnit Platform Launcher API。
:51) at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java...:108) at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java...:88) at org.junit.platform.launcher.core.EngineExecutionOrchestrator.lambda$execute$0(EngineExecutionOrchestrator.java...:67) at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java...:52) at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:96) at org.junit.platform.launcher.core.DefaultLauncher.execute
(HierarchicalTestEngine.java:51) at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java...:248) at org.junit.platform.launcher.core.DefaultLauncher.lambda$execute$5(DefaultLauncher.java:211...) at org.junit.platform.launcher.core.DefaultLauncher.withInterceptedStreams(DefaultLauncher.java...:226) at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:199) at...org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:132) at com.intellij.junit5
错误信息： Caused by: org.junit.platform.commons.PreconditionViolationException: Cannot create Launcher without...to the classpath at org.junit.platform.commons.util.Preconditions.condition(Preconditions.java:296)...at org.junit.platform.launcher.core.DefaultLauncher....(DefaultLauncher.java:58) at org.junit.platform.launcher.core.LauncherFactory.create(LauncherFactory.java...:91) at org.junit.platform.launcher.core.LauncherFactory.create(LauncherFactory.java:67) at org.gradle.api.internal.tasks.testing.junitplatform.JUnitPlatformTestClassProcessor
(DefaultLauncher.java:229) ~[junit-platform-launcher-1.5.2.jar:1.5.2] 106 at org.junit.platform.launcher.core.DefaultLauncher.lambda...(DefaultLauncher.java:211) ~[junit-platform-launcher-1.5.2.jar:1.5.2] 108 at org.junit.platform.launcher.core.DefaultLauncher.execute...(DefaultLauncher.java:191) ~[junit-platform-launcher-1.5.2.jar:1.5.2] 109 at org.junit.platform.launcher.core.DefaultLauncher.execute...(DefaultLauncher.java:229) ~[junit-platform-launcher-1.5.2.jar:1.5.2] 251 at org.junit.platform.launcher.core.DefaultLauncher.lambda...(DefaultLauncher.java:211) ~[junit-platform-launcher-1.5.2.jar:1.5.2] 253 at org.junit.platform.launcher.core.DefaultLauncher.execute
-- Required with Maven Surefire 2.x --> org.junit.platform... junit-platform-launcher <scope...Reason: java.lang.NoClassDefFoundError: org/springframework/jdbc/CannotGetJdbcConnectionException.Warning...Reason(s): java.lang.NoClassDefFoundError: org/springframework/jdbc/CannotGetJdbcConnectionExceptionWarning...Reason(s): java.lang.NoClassDefFoundError: javax/validation/Validator, java.lang.NoClassDefFoundError
笔者在项目中采用dubbo作为分布式服务框架，在eclipse时直接启动部署dubbo服务的war包程序运行正常，但是执行junit单元测试时却出现如下错误提示： java.lang.NoClassDefFoundError...(SpringJUnit4ClassRunner.java:89) at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290) at org.junit.runners.ParentRunner...) at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58) at org.junit.runners.ParentRunner...at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:86) at org.eclipse.jdt.internal.junit.runner.TestExecution.run...$AppClassLoader.loadClass(Launcher.java:331) at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
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