“线程“main”java.lang.NoClassDefFoundError 中的异常：org/hamcrest/SelfDescribing”
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"Exception in thread "main" java.lang.NoClassDefFoundError: org/hamcrest/SelfDescribing"
提问by Tim
On my Ubuntu, I run an java executable, with error about some package I didn't explicitly use in my code. What might be the solution? Thanks.
在我的 Ubuntu 上，我运行了一个 java 可执行文件，关于我没有在代码中明确使用的一些包的错误。可能的解决方案是什么？谢谢。
$ java -cp .:/home/tim/program_files/programming/java/junit-4.11.jar MyTest
Exception in thread "main" java.lang.NoClassDefFoundError: org/hamcrest/SelfDescribing
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:800)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:449)
at java.net.URLClassLoader.access0(URLClassLoader.java:71)
at java.net.URLClassLoader.run(URLClassLoader.java:361)
at java.net.URLClassLoader.run(URLClassLoader.java:355)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
at java.lang.ClassLoader.loadClass(ClassLoader.java:425)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
at java.lang.ClassLoader.loadClass(ClassLoader.java:358)
at org.junit.runner.Computer.getSuite(Computer.java:28)
at org.junit.runner.Request.classes(Request.java:75)
at org.junit.runner.JUnitCore.run(JUnitCore.java:128)
at org.junit.runner.JUnitCore.runClasses(JUnitCore.java:73)
at MyTest.main(MyTest.java:13)
Caused by: java.lang.ClassNotFoundException: org.hamcrest.SelfDescribing
at java.net.URLClassLoader.run(URLClassLoader.java:366)
at java.net.URLClassLoader.run(URLClassLoader.java:355)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
at java.lang.ClassLoader.loadClass(ClassLoader.java:425)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
at java.lang.ClassLoader.loadClass(ClassLoader.java:358)
... 17 more
回答by Ajay George
From Junit Wiki
来自Junit 维基
Plain-old JAR
Download the following JARs and put them on your test classpath:
junit.jarhamcrest-core.jar
普通 JAR
下载以下 JAR 并将它们放在您的测试类路径中：
junit.jarhamcrest-core.jar
Add the hamcrestcore jar to the class path to resolve the issue.
将hamcrest核心 jar添加到类路径以解决问题。
