我已经处理这个问题几天了，我无法解决它。我需要的工作设置是：两个独立的数据库，一个用于 JUnit 测试，另一个用于纯应用程序访问目的。我一直在将 MySQL 用于应用程序部分，因为我需要完全的控制和支持，而我正在考虑的另一个数据库是 Derby 或 H2，因为这里的速度至关重要。
好的，MySQL 数据库正在正常工作，当我运行 JUnit 测试时，它们是 100% 成功的，并且没有任何问题。但是，当我尝试使用第二个数据库配置我的项目时，问题就出现了。我一直在寻找答案，在将其他数据库添加到您的 spring-roo 项目时，我发现了以下设置：
- 我放入的其他 ApplicationContext：src/test/resources/META-INF/spring/ 并命名为：applicationContextTest.xml
- 以及我在同一文件夹中创建并命名为 applicationContext-securityTest.xml 的其他 ApplicationContextSecurity 文件
- pom.xml、persistence.xml 和 web.xml 文件的必要更改
- 而且我还在 JUnit 测试类中配置了 @ApplicationContext 以使用适当的文件
- 还要将位于与上述相同文件夹中的 database_test.properties 分开
我不断得到的例外是 EntityManager 没有被注入。我知道这是一个稀缺的信息，但我只是想在此之前获得一些意见，比如说，发布整个代码和随之而来的文件，以便人们可以看到我是否犯了一些愚蠢的错误（在这一点我确定我没有）或者我错过了一些需要进行的额外更改。
我使用的配置是：最新的spring roo、maven和eclipse 4.2.2
这是我获得的异常堆栈跟踪：
java.lang.IllegalStateException: Entity manager has not been injected (is the Spring Aspects JAR configured as an AJC/AJDT aspects library?)
at eu.execom.assessmenttool.domain.ExamFormulae_Roo_Jpa_ActiveRecord.entityManager_aroundBody0(ExamFormulae_Roo_Jpa_ActiveRecord.aj:19)
at eu.execom.assessmenttool.domain.ExamFormulae_Roo_Jpa_ActiveRecord.ajc$interMethod$eu_execom_assessmenttool_domain_ExamFormulae_Roo_Jpa_ActiveRecord$eu_execom_assessmenttool_domain_ExamFormulae$entityManager(ExamFormulae_Roo_Jpa_ActiveRecord.aj:1)
at eu.execom.assessmenttool.domain.ExamFormulae.entityManager(ExamFormulae.java:1)
at eu.execom.assessmenttool.domain.ExamFormulae_Roo_Jpa_ActiveRecord.ajc$interMethodDispatch1$eu_execom_assessmenttool_domain_ExamFormulae_Roo_Jpa_ActiveRecord$eu_execom_assessmenttool_domain_ExamFormulae$entityManager(ExamFormulae_Roo_Jpa_ActiveRecord.aj)
at eu.execom.assessmenttool.domain.ExamFormulae_Roo_Jpa_ActiveRecord.findAllExamFormulaes_aroundBody4(ExamFormulae_Roo_Jpa_ActiveRecord.aj:28)
at eu.execom.assessmenttool.domain.ExamFormulae_Roo_Jpa_ActiveRecord.ajc$interMethod$eu_execom_assessmenttool_domain_ExamFormulae_Roo_Jpa_ActiveRecord$eu_execom_assessmenttool_domain_ExamFormulae$findAllExamFormulaes(ExamFormulae_Roo_Jpa_ActiveRecord.aj:1)
at eu.execom.assessmenttool.domain.ExamFormulae.findAllExamFormulaes(ExamFormulae.java:1)
at eu.execom.assessmenttool.domain.ExamFormulae_Roo_Jpa_ActiveRecord.ajc$interMethodDispatch1$eu_execom_assessmenttool_domain_ExamFormulae_Roo_Jpa_ActiveRecord$eu_execom_assessmenttool_domain_ExamFormulae$findAllExamFormulaes(ExamFormulae_Roo_Jpa_ActiveRecord.aj)
at eu.execom.assessmenttool.web.GenerateExamControllerTest.generateExamQuestions(GenerateExamControllerTest.java:43)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:601)
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:45)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:42)
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:20)
at org.springframework.test.context.junit4.statements.RunBeforeTestMethodCallbacks.evaluate(RunBeforeTestMethodCallbacks.java:74)
at org.springframework.test.context.junit4.statements.RunAfterTestMethodCallbacks.evaluate(RunAfterTestMethodCallbacks.java:83)
at org.springframework.test.context.junit4.statements.SpringRepeat.evaluate(SpringRepeat.java:72)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:231)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:88)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:231)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:60)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:229)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:50)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:222)
at org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:61)
at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:71)
at org.junit.runners.ParentRunner.run(ParentRunner.java:300)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:174)
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50)
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)