junit with spring and mybatis

我是junit和TDD的新手。junit with spring and mybatis

我剛做了第一個測試用例。

@RunWith(SpringJUnit4ClassRunner.class) 
@ContextConfiguration(locations = {"classpath:spring-beans/spring-cms-root.xml"}) 
public class MemberServiceImplTest { 

    @Autowired 
    MemberService memberService; 

    @Test 
    public void testGetMemberById() { 
     Member member = memberService.getMemberById("testid"); 
     assertTrue(member != null); 
    } 

    @Test 
    public void testGetMemberBySeq() { 
     Member member = memberService.getMemberBySeq(1); 
     assertTrue(member != null); 
    } 
}

但是這個Test Class在運行junit測試時給了我這個錯誤。

java.lang.IllegalArgumentException: Mapped Statements collection does not contain value for com.tource.cms.member.MemberService.getMemberById 
    at org.apache.ibatis.session.Configuration$StrictMap.get(Configuration.java:672) 
    at org.apache.ibatis.session.Configuration.getMappedStatement(Configuration.java:507) 
    at org.apache.ibatis.session.Configuration.getMappedStatement(Configuration.java:500) 
    at org.apache.ibatis.binding.MapperMethod.setupCommandType(MapperMethod.java:240) 
    at org.apache.ibatis.binding.MapperMethod.<init>(MapperMethod.java:71) 
    at org.apache.ibatis.binding.MapperProxy.invoke(MapperProxy.java:39) 
    at $Proxy18.getMemberById(Unknown Source) 
    at com.tource.cms.member.MemberServiceImplTest.testGetMemberById(MemberServiceImplTest.java:39) 
    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.springframework.test.context.junit4.statements.RunBeforeTestMethodCallbacks.evaluate(RunBeforeTestMethodCallbacks.java:74) 
    at org.springframework.test.context.junit4.statements.RunAfterTestMethodCallbacks.evaluate(RunAfterTestMethodCallbacks.java:82) 
    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.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.internal.runners.statements.RunBefores.evaluate(RunBefores.java:28) 
    at org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:61) 
    at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:31) 
    at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:70) 
    at org.junit.runners.ParentRunner.run(ParentRunner.java:236) 
    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)

所以我改變了我的測試類如下所示。

public class MemberServiceImplTest { 

    MemberService memberService; 

    public MemberServiceImplTest() { 
     ApplicationContext ctx = new ClassPathXmlApplicationContext("spring-beans/spring-cms-root.xml"); 
     memberService = ctx.getBean("memberServiceImpl", MemberServiceImpl.class); 
    } 

    @Test 
    public void testGetMemberById() { 
     Member member = memberService.getMemberById("testid"); 
     assertTrue(member != null); 
    } 

    @Test 
    public void testGetMemberBySeq() { 
     Member member = memberService.getMemberBySeq(1); 
     assertTrue(member != null); 
    } 
}

而且這個效果很好。任何人都知道它爲什麼有效或沒有？

我對兩個類別之間的差異沒有任何意見。

來源

2012-09-20 Patrick Jeon

聽起來像你的mybatis映射/配置文件沒有被加載，雖然你沒有提供很多細節。（1）你的項目目錄結構中的配置在哪裏（例如'src/main/resources'）？（2）您如何構建項目（例如Maven？）？（3）由於您刪除了'@ RunWith'註釋，因此工作示例是如何啓動的。（4）在破碎的例子中，如果你在'@ Autowired'正下方的'memberService'聲明中添加'@Qualifier（「memberServiceImpl」）'會發生什麼？僅供參考而不是'assertTrue（member！= null）'，你應該'assertNotNull（member）'。 – jtoberon

@jtoberon哇，你解決了它。按照您的評論配置\ @Qualifier後，一切正常。謝謝 –

很酷。那是在黑暗中拍攝的。我將這個建議轉到了答案上，以便你可以接受它作爲後代。 – jtoberon

您的mybatis映射/配置文件未被加載，或者您的bean沒有正確自動連線。在破碎的示例中，嘗試將@Qualifier（「memberServiceImpl」）添加到@Autowired下面的memberService聲明中。

僅供參考因爲您說您是單元測試的新手而不是assertTrue（member！= null），您應該assertNotNull（member）。如果你的斷言失敗，這將產生一個稍好的錯誤信息。

來源

2012-09-28 12:48:23 jtoberon

junit with spring and mybatis

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