Java JUnit：NoClassDefFoundError：org/junit/runner/manipulation/Filter
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JUnit: NoClassDefFoundError: org/junit/runner/manipulation/Filter
提问by lucian.marcuta
When I try to run some unit tests, the following error is raised:
当我尝试运行一些单元测试时，出现以下错误：
java.lang.NoClassDefFoundError: org/junit/runner/manipulation/Filter
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:190)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.loadTestLoaderClass(RemoteTestRunner.java:320)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.createRawTestLoader(RemoteTestRunner.java:310)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.createLoader(RemoteTestRunner.java:305)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.defaultInit(RemoteTestRunner.java:283)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.init(RemoteTestRunner.java:207)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:191)
I have to mention that junit-4.11.jar is added to project build path. Any ideas?
不得不提的是，junit-4.11.jar 添加到项目构建路径中。有任何想法吗？
EDIT:I (Gábor Lipták) have read the other question this question supposed to be a duplicate of. This is NOT a duplicate.If someone has Gradle Buildship as build plugin in Eclipse, exactly this error is thrown, if you mistakenly put your test class in
main/resorcesinstead oftest/resources. Buildship seems to take care of test vs. compile classpath, when it comes to generate a run configuration. See the following snippets of my.classpathfile below as evidence:
编辑：我（Gábor Lipták）已经阅读了另一个问题，这个问题应该是重复的。这不是重复的。如果有人在 Eclipse 中使用 Gradle Buildship 作为构建插件，如果您错误地将测试类放在
main/resorces而不是test/resources. 在生成运行配置时，Buildship 似乎负责测试与编译类路径。请参阅下面我的.classpath文件的以下片段作为证据：
<classpathentry kind="src" output="bin/main" path="src/main/resources">
<attributes>
<attribute name="gradle_scope" value="main"/>
<attribute name="gradle_used_by_scope" value="main,test"/>
</attributes>
</classpathentry>
<classpathentry kind="src" output="bin/test" path="src/test/resources">
<attributes>
<attribute name="gradle_scope" value="test"/>
<attribute name="gradle_used_by_scope" value="test"/>
</attributes>
</classpathentry>
回答by mmwaikar
Even I was facing the same issue, so try the below steps -
即使我也面临同样的问题，所以请尝试以下步骤 -
- Right click the project in Package Explorer, and click Properties.
- Click the Libraries tab.
- Click the Add library button.
- Select JUnit and click Next.
- Select JUnit 4 (that's what I am using).
- Click finish.
- Now right click the file containing unit tests and select Properties.
- Under the Run/Debug settings, remove any entries from the Launch Configurations for that file. Hit ok.
- 在包资源管理器中右键单击项目，然后单击属性。
- 单击库选项卡。
- 单击添加库按钮。
- 选择 JUnit 并单击下一步。
- 选择 JUnit 4（这就是我正在使用的）。
- 单击完成。
- 现在右键单击包含单元测试的文件并选择属性。
- 在运行/调试设置下，从该文件的启动配置中删除任何条目。打好。
Hopefully you'll be able to run the tests now.
希望您现在能够运行测试。
