Question

以下是为NetBean IDE创建的a Java program的目录结构：

$ ls
build.xml  manifest.mf  nbproject  src  test

package中的src/steal/MMThread.java语句是

package steal;

我按

编译.java文件

$ javac src/steal/MMThread.java -d bin/steal/
$ ls bin/steal/
MMThread.class  MMThread$Worker.class

然后我编译并运行了Java Junit测试程序。编译很好，但运行测试不是。那我该怎么办？感谢

$ javac -cp bin/:/home/t/program_files/programming/eclipse/plugins/org.junit_4.11.0.v201303080030/junit.jar test/steal/MMThreadTest.java 

$ ls test/steal/
 MMThreadTest.class  MMThreadTest.java

$ java -cp bin/:/home/t/program_files/programming/eclipse/plugins/org.junit_4.11.0.v201303080030/junit.jar org.junit.runner.JUnitCore  steal.MMThreadTest
JUnit version 4.11
Could not find class: steal.MMThreadTest
Exception in thread "main" java.lang.NoClassDefFoundError: org/hamcrest/SelfDescribing
    at java.base/java.lang.ClassLoader.defineClass1(Native Method)
    at java.base/java.lang.ClassLoader.defineClass(ClassLoader.java:996)
    at java.base/java.security.SecureClassLoader.defineClass(SecureClassLoader.java:173)
    at java.base/jdk.internal.loader.BuiltinClassLoader.defineClass(BuiltinClassLoader.java:772)
    at java.base/jdk.internal.loader.BuiltinClassLoader.findClassOnClassPathOrNull(BuiltinClassLoader.java:670)
    at java.base/jdk.internal.loader.BuiltinClassLoader.loadClassOrNull(BuiltinClassLoader.java:593)
    at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:551)
    at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:185)
    at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:486)
    at org.junit.runner.Computer.getSuite(Computer.java:28)
    at org.junit.runner.Request.classes(Request.java:75)
    at org.junit.runner.JUnitCore.run(JUnitCore.java:117)
    at org.junit.runner.JUnitCore.runMain(JUnitCore.java:96)
    at org.junit.runner.JUnitCore.runMainAndExit(JUnitCore.java:47)
    at org.junit.runner.JUnitCore.main(JUnitCore.java:40)
Caused by: java.lang.ClassNotFoundException: org.hamcrest.SelfDescribing
    at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:553)
    at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:185)
    at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:486)
    ... 15 more

更新

$ java -cp test/:bin/:/home/t/program_files/programming/eclipse/plugins/org.junit_4.11.0.v201303080030/junit.jar org.junit.runner.JUnitCore  steal.MMThreadTest
JUnit version 4.11
Exception in thread "main" java.lang.NoClassDefFoundError: org/hamcrest/SelfDescribing
    at java.base/java.lang.ClassLoader.defineClass1(Native Method)
    at java.base/java.lang.ClassLoader.defineClass(ClassLoader.java:996)
    at java.base/java.security.SecureClassLoader.defineClass(SecureClassLoader.java:173)
    at java.base/jdk.internal.loader.BuiltinClassLoader.defineClass(BuiltinClassLoader.java:772)
    at java.base/jdk.internal.loader.BuiltinClassLoader.findClassOnClassPathOrNull(BuiltinClassLoader.java:670)
    at java.base/jdk.internal.loader.BuiltinClassLoader.loadClassOrNull(BuiltinClassLoader.java:593)
    at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:551)
    at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:185)
    at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:486)
    at org.junit.runner.Computer.getSuite(Computer.java:28)
    at org.junit.runner.Request.classes(Request.java:75)
    at org.junit.runner.JUnitCore.run(JUnitCore.java:117)
    at org.junit.runner.JUnitCore.runMain(JUnitCore.java:96)
    at org.junit.runner.JUnitCore.runMainAndExit(JUnitCore.java:47)
    at org.junit.runner.JUnitCore.main(JUnitCore.java:40)
Caused by: java.lang.ClassNotFoundException: org.hamcrest.SelfDescribing
    at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:553)
    at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:185)
    at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:486)
    ... 15 more

Answer 1

问题不在于哈克雷斯特。

此代码使用Junit 3.8.2，您在类路径中提供Junit 4。所以删除4并添加Junit 3.8.2

Answer 2

类路径设置不正确。它需要：

的junit
hamcrest（junit的依赖）
包含.class个文件

hamcrest的jar应该在你拥有junit的同一个目录中。查看/home/t/program_files/programming/eclipse/plugins。您可以使用find命令找到它：

find /home/t/program_files/programming/eclipse/plugins -name '*hamcrest*.jar'

如果您的机器没有hamcrest，你可以从这里下载：

http://search.maven.org/remotecontent?filepath=org/hamcrest/hamcrest-all/1.3/hamcrest-all-1.3.jar

一旦你拥有了它，你可以把各个部分放在一起：

junit=/home/t/program_files/programming/eclipse/plugins/org.junit_4.11.0.v201303080030/junit.jar
hamcrest=/home/t/program_files/programming/eclipse/plugins/idontknowwhere/hamcrest.jar
java -cp "$junit:$hamcrest:test/steal" org.junit.runner.JUnitCore MMThreadTest

运行junit测试

2 个答案: