Eclipse+Junit4+SpringFramework：运行单个Unittest类导致“无法加载ApplicationContext”异常

Question

如果我在项目中运行所有单元测试类，则不会触发异常。

但是，如果我只选择一个单独的类，则会抛出一个“java.lang.IllegalStateException”异常，原因是“无法加载 ApplicationContext”

这是堆栈跟踪：

2011-06-29 17:48:12,400 ERROR [main] - TestContextManager.prepareTestInstance Caught exception while allowing TestExecutionListener [org.springframework.test.context.support.DependencyInjectionTestExecutionListener@75c744] to prepare test instance [com.ahwkong.work.MyTest@6d6aa0]
java.lang.IllegalStateException: Failed to load ApplicationContext
      at org.springframework.test.context.TestContext.getApplicationContext(TestContext.java:203)
      at org.springframework.test.context.support.DependencyInjectionTestExecutionListener.injectDependencies(DependencyInjectionTestExecutionListener.java:109)
      at org.springframework.test.context.support.DependencyInjectionTestExecutionListener.prepareTestInstance(DependencyInjectionTestExecutionListener.java:75)
      at org.springframework.test.context.TestContextManager.prepareTestInstance(TestContextManager.java:255)
      at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.createTest(SpringJUnit4ClassRunner.java:93)
      at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.invokeTestMethod(SpringJUnit4ClassRunner.java:130)
      at org.junit.internal.runners.JUnit4ClassRunner.runMethods(JUnit4ClassRunner.java:51)
      at org.junit.internal.runners.JUnit4ClassRunner$1.run(JUnit4ClassRunner.java:44)
      at org.junit.internal.runners.ClassRoadie.runUnprotected(ClassRoadie.java:27)
      at org.junit.internal.runners.ClassRoadie.runProtected(ClassRoadie.java:37)
      at org.junit.internal.runners.JUnit4ClassRunner.run(JUnit4ClassRunner.java:42)
      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: org.springframework.beans.factory.BeanDefinitionStoreException: Invalid bean definition with name 'dataSource' defined in class path resource [ProjectDB.xml]: Could not resolve placeholder 'env.jdbc.url'
      at org.springframework.beans.factory.config.PropertyPlaceholderConfigurer.processProperties(PropertyPlaceholderConfigurer.java:268)
      at org.springframework.beans.factory.config.PropertyResourceConfigurer.postProcessBeanFactory(PropertyResourceConfigurer.java:75)
      at org.springframework.context.support.AbstractApplicationContext.invokeBeanFactoryPostProcessors(AbstractApplicationContext.java:554)
      at org.springframework.context.support.AbstractApplicationContext.invokeBeanFactoryPostProcessors(AbstractApplicationContext.java:528)
      at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:363)
      at org.springframework.test.context.support.AbstractGenericContextLoader.loadContext(AbstractGenericContextLoader.java:84)
      at org.springframework.test.context.support.AbstractGenericContextLoader.loadContext(AbstractGenericContextLoader.java:42)
      at org.springframework.test.context.TestContext.loadApplicationContext(TestContext.java:173)
      at org.springframework.test.context.TestContext.getApplicationContext(TestContext.java:199)
      ... 16 more

如您所见，根本原因在于占位符解析。 ProjectDB.xml 文件实际上存在于另一个 jar 文件中。

为什么会有不同的行为？ （所有测试类与一个）

Answer 1

env.jdbc.url 未解决。我假设您将其作为 JVM 参数（或 env 变量）传递，并且您将其记住为运行所有测试的运行配置，但并未针对单个测试进行设置。

确保从“运行”对话框中设置了所有必需的属性。