cmdline中的Junit-java.lang.ClassNotFoundException

Question

I have a junit test suite that I have running successfully from eclipse. When I try to run the jar with

java -jar AppTest.jar

I get the following:

Exception in thread "main" java.lang.NoClassDefFoundError: org/junit/runner/JUnitCore
at appdirect.AppTest.main(AppTest.java:18)
Caused by: java.lang.ClassNotFoundException: org.junit.runner.JUnitCore
at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
... 1 more

I know the jar was created successfully since I am creating the logs (programmatically from AppTest) and echoing $PATH prints the directory that the junit.jar is in.

How do I ensure when I am jarring in eclipse I am picking up all the junit jars?

Answer 1

You need to add the junit jar to the classpath , not your system's path.

One way to do this is to set the classpath to point to junit.jar and AppTest.jar and invoke your main.

java -cp /path/to/junit.jar:/path/to/AppTest.jar com.example.Main

Answer 2

Path might print you the jar's but is the jars there in the classpath. There is one more environment variable called CLASSPATH in which you need to append your junit jars and try running your AppTest.jar

How to set classpath

Answer 3

在主Jar的清单中添加对另一个Jar的引用。

Answer 4

Believe it or not, it was as simple as making sure I exported as a "runnable Jar" in the wizard and used the "Extract required libraries..." option. I had been trying to export it as a normal jar.