【发布时间】：2016-04-21 13:27:07
【问题描述】：
我正在尝试使用 JUnit 运行黄瓜测试，但出现 java.lang.NoClassDefFoundError 异常。
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
我已将以下 Cucumber jar 文件添加到 Eclipse 并从 thi 链接将 cucumber 插件添加到 Eclipse - 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，但徒劳无功。我尝试按照以下链接中的建议将小黄瓜降级到较低版本。但这并不能解决问题。
- NoClassDefFoundError while setting up cucumber tests
- Exception in thread "main" 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。但是由于 Maven 存储库本身中可用的 jar 文件没有相同的版本，我不确定如何/在哪里可以下载所有黄瓜 jar 文件的相同版本。
- Cucumber Exception: java.lang.ClassNotFoundException: cucumber.io.ResourceLoader
- how to solve NoClassDefFoundError in cucumber test
非常感谢任何解决此问题的帮助。
【问题讨论】：
标签： selenium selenium-webdriver junit cucumber cucumber-junit