使用JUnit运行黄瓜测试时出现java.lang.NoClassDefFoundError异常

Question

我正在尝试用JUnit进行黄瓜测试,我得到了java.lang.NoClassDefFoundError例外.

JUnit代码:

package ctest;

import org.junit.runner.RunWith;

import cucumber.api.CucumberOptions;
import cucumber.api.junit.Cucumber;

@RunWith(Cucumber.class)
@CucumberOptions(
features = "Feature"
,glue={"stepDefinition"}
)

public class Runner {

}

例外:

java.lang.NoClassDefFoundError: gherkin/formatter/Formatter
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(Unknown Source)
at java.security.SecureClassLoader.defineClass(Unknown Source)
at java.net.URLClassLoader.defineClass(Unknown Source)
at java.net.URLClassLoader.access$100(Unknown Source)
at java.net.URLClassLoader$1.run(Unknown Source)
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at cucumber.runtime.formatter.PluginFactory$1.<init>(PluginFactory.java:53)
at cucumber.runtime.formatter.PluginFactory.<clinit>(PluginFactory.java:52)
at cucumber.runtime.RuntimeOptions.<init>(RuntimeOptions.java:69)
at cucumber.runtime.RuntimeOptionsFactory.create(RuntimeOptionsFactory.java:25)
at cucumber.api.junit.Cucumber.<init>(Cucumber.java:55)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
at java.lang.reflect.Constructor.newInstance(Unknown Source)
at org.junit.internal.builders.AnnotatedBuilder.buildRunner(AnnotatedBuilder.java:104)
at org.junit.internal.builders.AnnotatedBuilder.runnerForClass(AnnotatedBuilder.java:86)
at org.junit.runners.model.RunnerBuilder.safeRunnerForClass(RunnerBuilder.java:59)
at org.junit.internal.builders.AllDefaultPossibilitiesBuilder.runnerForClass(AllDefaultPossibilitiesBuilder.java:26)
at org.junit.runners.model.RunnerBuilder.safeRunnerForClass(RunnerBuilder.java:59)
at org.junit.internal.requests.ClassRequest.getRunner(ClassRequest.java:33)
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestLoader.createUnfilteredTest(JUnit4TestLoader.java:84)
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestLoader.createTest(JUnit4TestLoader.java:70)
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestLoader.loadTests(JUnit4TestLoader.java:43)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:444)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:675)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:382)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:192)
Caused by: java.lang.ClassNotFoundException: gherkin.formatter.Formatter
at java.net.URLClassLoader$1.run(Unknown Source)
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
... 34 more

我已经将下面的Cucumber jar文件添加到Eclipse中,并将黄瓜插件添加到eclipse中,从链接开始 - http://cucumber.github.com/cucumber-eclipse/update-site.

我在SE中发现了一些类似的问题并尝试了那里提到的建议但是徒劳无功.我尝试将小黄瓜降级到较低版本,如下面的链接所示.但这并不能解决问题.

• 设置黄瓜测试时出现NoClassDefFoundError
• 线程"main"中的异常java.lang.NoClassDefFoundError:gherkin/formatter/Formatter

以下问题的答案建议添加相同版本的黄瓜jar文件.但由于Maven存储库中可用的jar文件本身没有相同的版本,我不知道如何/在哪里可以下载相同版本的所有黄瓜jar文件.

• 黄瓜异常:java.lang.ClassNotFoundException:cucumber.io.ResourceLoader
• 如何在黄瓜测试中解决NoClassDefFoundError

任何帮助解决这个问题非常感谢.

Answer 1

根据这个,黄瓜,Java的1.2.4需要小黄瓜-2.12.2,而你是提供小黄瓜-4.0.0.

您可以从此处下载版本2.12.2 ,删除版本4.0.0并查看它是否有效(您可能需要重新启动Eclipse).