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空指針java.lang.NullPointerException這是什么問題

org.opentest4j.MultipleFailuresError: Multiple Failures (2 failures)
?org/dom4j/io/STAXEventReader
?<no message> in java.lang.NullPointerException
?at org.junit.vintage.engine.execution.TestRun.getStoredResultOrSuccessful(TestRun.java:166)
?at org.junit.vintage.engine.execution.RunListenerAdapter.fireExecutionFinished(RunListenerAdapter.java:202)
?at org.junit.vintage.engine.execution.RunListenerAdapter.testFinished(RunListenerAdapter.java:160)
?at org.junit.vintage.engine.execution.RunListenerAdapter.testFinished(RunListenerAdapter.java:76)
?at org.junit.runner.notification.SynchronizedRunListener.testFinished(SynchronizedRunListener.java:56)
?at org.junit.runner.notification.RunNotifier$7.notifyListener(RunNotifier.java:190)
?at org.junit.runner.notification.RunNotifier$SafeNotifier.run(RunNotifier.java:72)
?at org.junit.runner.notification.RunNotifier.fireTestFinished(RunNotifier.java:187)
?at org.junit.internal.runners.model.EachTestNotifier.fireTestFinished(EachTestNotifier.java:38)
?at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:331)
?at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)
?at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)
?at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
?at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
?at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
?at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
?at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
?at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
?at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
?at org.junit.runner.JUnitCore.run(JUnitCore.java:115)
?at org.junit.vintage.engine.execution.RunnerExecutor.execute(RunnerExecutor.java:40)
?at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183)
?at java.base/java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:195)
?at java.base/java.util.Iterator.forEachRemaining(Iterator.java:133)
?at java.base/java.util.Spliterators$IteratorSpliterator.forEachRemaining(Spliterators.java:1801)
?at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484)
?at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474)
?at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150)
?at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173)
?at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
?at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497)
?at org.junit.vintage.engine.VintageTestEngine.executeAllChildren(VintageTestEngine.java:80)
?at org.junit.vintage.engine.VintageTestEngine.execute(VintageTestEngine.java:71)
?at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:229)
?at org.junit.platform.launcher.core.DefaultLauncher.lambda$execute$6(DefaultLauncher.java:197)
?at org.junit.platform.launcher.core.DefaultLauncher.withInterceptedStreams(DefaultLauncher.java:211)
?at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:191)
?at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:137)
?at org.eclipse.jdt.internal.junit5.runner.JUnit5TestReference.run(JUnit5TestReference.java:89)
?at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:41)
?at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:541)
?at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:763)
?at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:463)
?at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:209)

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3 回答

代碼貼出來啊

0 回復 有任何疑惑可以回復我~

樓主,這個該怎么解決

0 回復 有任何疑惑可以回復我~

在使用對象前,只做的了聲明,而沒有實例化

0 回復 有任何疑惑可以回復我~
#1

我愛孫佳怡

如何解決?
2019-06-18 回復 有任何疑惑可以回復我~

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空指針java.lang.NullPointerException這是什么問題

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