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查詢測試時,空指針異常,不知道什么原因,求教!??!

java.lang.NullPointerException
?at com.shufa.competition.dao.CompetitionDaoTest.testSubmit(CompetitionDaoTest.java:58)
?at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
?at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
?at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
?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:73)
?at org.springframework.test.context.junit4.statements.RunAfterTestMethodCallbacks.evaluate(RunAfterTestMethodCallbacks.java:82)
?at org.springframework.test.context.junit4.statements.SpringRepeat.evaluate(SpringRepeat.java:73)
?at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:271)
?at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:224)
?at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:83)
?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:68)
?at org.junit.runners.ParentRunner.run(ParentRunner.java:309)
?at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:163)
?at org.junit.runner.JUnitCore.run(JUnitCore.java:160)
?at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:68)


Disconnected from the target VM, address: '127.0.0.1:49379', transport: 'socket'


Process finished with exit code -1


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1 回答

知道是什么原因了,首先是注解寫漏掉了,然后在mapper中sql語句寫錯了

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