彈簧自動連接掃描只測試文件

Question

在單元測試使用JUnit，春天自動連接只工作文件：

src/test/org/baudo 

但沒有文件：

src/main/org/baudo 

所以，當我測試我的DAO是autowires一個sessionFactory對象，結果是我的會話工廠是null。然後，我得到了下面的堆棧跟蹤：

java.lang.NullPointerException 
at org.baudo.dao.MyDAO.addPerson(MyDao.java:46) 
at org.baudo.dao.MyDaoTest.testAddPerson(MyDaoTest.java:53) 
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) 
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) 
at java.lang.reflect.Method.invoke(Unknown Source) 
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:47) 
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12) 
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:44) 
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17) 
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:238) 
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:63) 
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:236) 
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:53) 
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:229) 
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:309) 
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) 

這是我的掃描組件的配置：

<context:component-scan base-package="org.baudo" /> 

事實是，我有兩個名稱相同的包（一個用於測試和一個下主）。

我能做些什麼來掃描所有文件以進行自動裝配（而不僅僅是在測試目錄下）？

更多信息：

我使用Spring MVC和使用Maven

休眠這是我的測試DAO：

@RunWith(SpringJUnit4ClassRunner.class) 
@ContextConfiguration(locations={"/spring-servlet.xml"}) 
public class MyDaoTest { 

    @Autowired 
    private SessionFactory sessionFactory; // This contains a value 

    // Other stuff here 
} 

這是我的DAO：

public class MyDao { 

    @Autowired 
    private SessionFactory sessionFactory; // This is null 

    // Other stuff here 
} 

My Dao is under：

MyProject\src\main\java\org\baudo\dao 

我的測試是在：

MyProject\src\test\java\org\baudo\dao 

我的彈簧servlet.xml中還含有

<context:annotation-config /> 

<tx:annotation-driven /> 

這是我定義我的bean的方式：

<bean id="sessionFactory" 
    class="org.springframework.orm.hibernate3.LocalSessionFactoryBean"> 
    <property name="dataSource" ref="dataSource" /> 
    <property name="configLocation"> 
     <value>classpath:hibernate.cfg.xml</value> 
    </property> 
    <property name="configurationClass"> 
     <value>org.hibernate.cfg.AnnotationConfiguration</value> 
    </property> 
    <property name="hibernateProperties"> 
     <props> 
      <prop key="hibernate.dialect">${jdbc.dialect}</prop> 
      <prop key="hibernate.show_sql">true</prop> 
     </props> 
    </property> 
</bean> 

我應該添加其他東西，使其工作？

Answer 1

最可能的原因是您直接創建MyDao對象，而不是通過Spring BeanFactory。你必須要麼自動裝配要測試到您的測試類的DAO：

// Here live the annotations ... 
public class MyDaoTest { 
    @Autowired 
    private MyDao myDao; 

    @Test 
    public void testSomething() { 
     // Do what you need with myDao 
    } 
} 

，或者使用AspectJ編譯器/韋弗和問春「建議」的new操作

<context:spring-configured />