Junit ExceptionInInitializerError

当我尝试单独运行junit测试时，出现此错误。而当我尝试运行它使用Ant（它运行所有测试）它运行良好。谁能告诉我可能的原因是什么？ src文件夹和测试文件夹位于同一层次结构中。我必须链接src和测试文件夹吗？Junit ExceptionInInitializerError

java.lang.ExceptionInInitializerError 
at com.brinkmat.dao.impl.OwnerUtilsTest.testModifyOwnerAccount(OwnerUtilsTest.java:105) 
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) 
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) 
at java.lang.reflect.Method.invoke(Method.java:597) 
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:44) 
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15) 
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:41) 
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:20) 
at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:31) 
at org.junit.runners.BlockJUnit4ClassRunner.runNotIgnored(BlockJUnit4ClassRunner.java:79) 
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:71) 
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:49) 
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:193) 
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:52) 
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:191) 
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:42) 
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:184) 
at org.junit.runners.ParentRunner.run(ParentRunner.java:236) 
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:46) 
at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38) 
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467) 
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683) 
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390) 
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197) 

Caused by: java.lang.NullPointerException 
at com.brinkmat.dao.utils.DumpLogger.<init>(DumpLogger.java:26) 
at com.brinkmat.dao.utils.DumpLogger.getInstance(DumpLogger.java:34) 
at com.brinkmat.deploy.Helper.<clinit>(Helper.java:64) 
... 25 more 

java.lang.NoClassDefFoundError: Could not initialize class com.brinkmat.deploy.Helper 
at com.brinkmat.dao.impl.OwnerUtilsTest.tearDown(OwnerUtilsTest.java:28) 
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) 
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) 
at java.lang.reflect.Method.invoke(Method.java:597) 
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:44) 
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15) 
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:41) 
at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:37) 
at org.junit.runners.BlockJUnit4ClassRunner.runNotIgnored(BlockJUnit4ClassRunner.java:79) 
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:71) 
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:49) 
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:193) 
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:52) 
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:191) 
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:42) 
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:184) 
at org.junit.runners.ParentRunner.run(ParentRunner.java:236) 
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:46) 
at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38) 
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467) 
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683) 
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390) 
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)

来源

2011-12-19 vikas27

'无法初始化类com.brinkmat.deploy.Helper' < - 这是你应该解决什么 – fge 2011-12-19 15:55:14

'com.brinkmat.dao.utils.DumpLogger。（DumpLogger.java:26）'这是原因，那里的代码是什么？ – 2011-12-19 15:55:50

RuntimeEnvironment environment = RuntimeEnvironment.getRuntimeEnvironment（）; \t String logFile =“log4j”。 +环境+“.properties”; logFile = Thread.currentThread（）。getContextClassLoader（）。getResource（logFile）.getFile（）; \t PropertyConfigurator.configure（logFile）;此代码在那里。 – vikas27 2011-12-19 15:59:44

根据您的意见，我的第一个猜测是文件“log4jWHATEVER.properties”不在类路径中。

来源

2011-12-19 17:07:40

属性文件可能在测试目录中丢失，属性文件可能在src目录中用于log4j，数据库和应用程序的特定目的。 junit测试人员将从test/resources目录中引用propety文件。所以这些属性都应该保留在测试目录中（无论运行应用程序所需的属性文件，那些属性文件应该在运行junit测试时在测试资源目录中）。

来源

2011-12-19 17:47:48

这听起来像一些属性文件是由蚂蚁读取，而不是你的单元测试。

上面添加你的单元测试的类声明的事情：如果您使用Spring，你可以很容易地被弹簧JUnit类亚军运行，并有设置属性添加属性

@RunWith（SpringJUnit4ClassRunner.class）来 @ ContextConfiguration（locations = {“myconfig.xml”}）

并添加你的spring bean配置（myconfig.xml或者你想调用它的任何东西）在你的单元测试的classpath中。例如：

<?xml version="1.0" encoding="UTF-8"?> 
    <beans xmlns="http://www.springframework.org/schema/beans" > 
     <bean id="placeholderConfig" 
     class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer"> 
     <property name="properties"> 
       <value> 
        property1=value1 
        property2=value2 
        {etc...} 
       </value> 
       </property> 
     </bean> 
</beans>

来源

2011-12-19 20:29:14

Junit ExceptionInInitializerError

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