junit给出错误java.lang.NoClassDefFoundError:junit/framework/JUnit4TestAdapterCache [英] junit gives error java.lang.NoClassDefFoundError: junit/framework/JUnit4TestAdapterCache

问题描述

我正尝试在 https://github.com/cdwijayarathna/上对我的项目运行简单的单元测试oj4j .

我将junit-4.12.jar和ant-junit4.jar都添加到了lib文件夹中.

I added both junit-4.12.jar and ant-junit4.jar to the lib folder.

但是当我运行"rake run_tests"时，在给出的报告位置出现了以下错误.

But when I ran "rake run_tests", I'm getting following error at the report location I have given.

java.lang.NoClassDefFoundError: junit/framework/JUnit4TestAdapterCache
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.access$100(URLClassLoader.java:71)
at java.net.URLClassLoader$1.run(URLClassLoader.java:361)
at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
at java.lang.ClassLoader.loadClass(ClassLoader.java:425)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
at java.lang.ClassLoader.loadClass(ClassLoader.java:358)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:195)
at java.net.URLClassLoader$1.run(URLClassLoader.java:366)
at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
at java.lang.ClassLoader.loadClass(ClassLoader.java:425)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
at java.lang.ClassLoader.loadClass(ClassLoader.java:358)

这是什么原因?我该怎么解决?

What's the reason for that? how can I solve this?

推荐答案

我在Debian上通过ant通过junit运行junit时遇到了相同的异常.通过在$ CLASSPATH环境变量中包含junit4.jar，我可以使其运行.这意味着jvm没有在junit4.jar上启动. /usr/share/java/junit4.jar路径特定于Debian的junit软件包，因此您需要适当地替换.

I had the same exception running junit through ant on Debian. By including the junit4.jar in the $CLASSPATH environment variable I was able to get it running. Which means the jvm was not picking up on the junit4.jar. The /usr/share/java/junit4.jar path is specific to Debian's junit package, so you will need to replace as appropriate.

    $ export CLASSPATH=/usr/share/java/junit4.jar
    $ ant test

这篇关于junit给出错误java.lang.NoClassDefFoundError:junit/framework/JUnit4TestAdapterCache的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！