使用JUnit4.12报错java.lang.NoClassDefFoundError: org/hamcrest/SelfDescribing解决方案

我不是女神ヾ 2022-05-22 10:54 98阅读 0赞

#### 问题 ####

在使用JUnit4.12时，报错如下：

xception in thread "main" java.lang.NoClassDefFoundError: org/hamcrest/SelfDescribing
        at java.lang.ClassLoader.defineClass1(Native Method)
        at java.lang.ClassLoader.defineClass(ClassLoader.java:763)
        at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
        at java.net.URLClassLoader.defineClass(URLClassLoader.java:467)
        at java.net.URLClassLoader.access$100(URLClassLoader.java:73)
        at java.net.URLClassLoader$1.run(URLClassLoader.java:368)
        at java.net.URLClassLoader$1.run(URLClassLoader.java:362)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.net.URLClassLoader.findClass(URLClassLoader.java:361)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
        at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
        at java.lang.Class.forName0(Native Method)
        at java.lang.Class.forName(Class.java:264)
        at com.intellij.junit4.JUnit4TestRunnerUtil.class$(JUnit4TestRunnerUtil.java:118)
        at com.intellij.junit4.JUnit4TestRunnerUtil.getParameterizedRequest(JUnit4TestRunnerUtil.java:243)
        at com.intellij.junit4.JUnit4TestRunnerUtil.buildRequest(JUnit4TestRunnerUtil.java:173)
        at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:46)
        at com.intellij.rt.execution.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:51)
        at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:237)
        at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:70)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:498)
        at com.intellij.rt.execution.application.AppMain.main(AppMain.java:147)
    Caused by: java.lang.ClassNotFoundException: org.hamcrest.SelfDescribing
        at 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)
        ... 26 more

#### 原因 ####

*  junit.jar: Includes the Hamcrest classes. The simple all-in-one solution to get started quickly.`Starting with version 4.11, Hamcrest is no longer included in this jar.`
 *  junit-dep.jar: Only includes the JUnit classes but not Hamcrest. Lets you use a different Hamcrest version.

注意红色部分，从JUnit 4.11开始，`Hamcrest`已经不再包含在junit.jar中了，需要单独引入。

#### 解决方案 ####

*  导入hamcrest-core.jar [点击前往下载][Link 1]
 *  导入hamcrest-library.jar [点击前往下载][Link 2]

[Link 1]: http://mvnrepository.com/artifact/org.hamcrest/hamcrest-core/1.3
[Link 2]: http://mvnrepository.com/artifact/org.hamcrest/hamcrest-library/1.3