Java powermockito中的ArraysIndexOutOfBounds异常

在我的单元课上，我有以下几行

 @Reference
 private ConfigService configService;

所以我试着如下模拟它，但当这行执行时，它给出了ArraysIndexOutOfBounds异常

whenNew(ConfigService.class).withAnyArguments().thenReturn(configService);


java.lang.ArrayIndexOutOfBoundsException: 0
    at org.powermock.api.mockito.internal.expectation.DefaultConstructorExpectationSetup.withAnyArguments(DefaultConstructorExpectationSetup.java:64)
    at com.google.core.servlets.forms.HmeServletTest.testDoPost(HmeServletTest.java:82)
    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:606)
    at org.junit.internal.runners.TestMethod.invoke(TestMethod.java:66)
    at org.powermock.modules.junit4.internal.impl.PowerMockJUnit44RunnerDelegateImpl$PowerMockJUnit44MethodRunner.runTestMethod(PowerMockJUnit44RunnerDelegateImpl.java:310)
    at org.junit.internal.runners.MethodRoadie$2.run(MethodRoadie.java:86)
    at org.junit.internal.runners.MethodRoadie.runBeforesThenTestThenAfters(MethodRoadie.java:94)
    at org.powermock.modules.junit4.internal.impl.PowerMockJUnit44RunnerDelegateImpl$PowerMockJUnit44MethodRunner.executeTest(PowerMockJUnit44RunnerDelegateImpl.java:294)
    at org.powermock.modules.junit4.internal.impl.PowerMockJUnit47RunnerDelegateImpl$PowerMockJUnit47MethodRunner.executeTestInSuper(PowerMockJUnit47RunnerDelegateImpl.java:127)
    at org.powermock.modules.junit4.internal.impl.PowerMockJUnit47RunnerDelegateImpl$PowerMockJUnit47MethodRunner.executeTest(PowerMockJUnit47RunnerDelegateImpl.java:82)
    at org.powermock.modules.junit4.internal.impl.PowerMockJUnit44RunnerDelegateImpl$PowerMockJUnit44MethodRunner.runBeforesThenTestThenAfters(PowerMockJUnit44RunnerDelegateImpl.java:282)
    at org.junit.internal.runners.MethodRoadie.runTest(MethodRoadie.java:84)
    at org.junit.internal.runners.MethodRoadie.run(MethodRoadie.java:49)
    at org.powermock.modules.junit4.internal.impl.PowerMockJUnit44RunnerDelegateImpl.invokeTestMethod(PowerMockJUnit44RunnerDelegateImpl.java:207)
    at org.powermock.modules.junit4.internal.impl.PowerMockJUnit44RunnerDelegateImpl.runMethods(PowerMockJUnit44RunnerDelegateImpl.java:146)
    at org.powermock.modules.junit4.internal.impl.PowerMockJUnit44RunnerDelegateImpl$1.run(PowerMockJUnit44RunnerDelegateImpl.java:120)
    at org.junit.internal.runners.ClassRoadie.runUnprotected(ClassRoadie.java:34)
    at org.junit.internal.runners.ClassRoadie.runProtected(ClassRoadie.java:44)
    at org.powermock.modules.junit4.internal.impl.PowerMockJUnit44RunnerDelegateImpl.run(PowerMockJUnit44RunnerDelegateImpl.java:118)
    at org.powermock.modules.junit4.common.internal.impl.JUnit4TestSuiteChunkerImpl.run(JUnit4TestSuiteChunkerImpl.java:101)
    at org.powermock.modules.junit4.common.internal.impl.AbstractCommonPowerMockRunner.run(AbstractCommonPowerMockRunner.java:53)
    at org.powermock.modules.junit4.PowerMockRunner.run(PowerMockRunner.java:53)
    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)

---

尝试使用

.withArguments（）

调用。我以前没有见过

.withAnyArguments（）

调用，这可能就是它对数组的抱怨。在

.withArguments（）

调用中，您可以使用mock

任何

类，因此无需指定确切的对象

---

例如，您可以让一个构造函数通常采用

字符串
，然后自定义类
X
：
whenNew（a.class.），带有参数（Mockito.anyString（），Mockito.any（X.class））。然后返回（aMock）
我遇到了这个问题，经过长时间的调查，我发现我在一个方法中使用了相同的模拟两次。因此，我在两个When（）声明之间使用Mockito.reset（）对mock进行休息，它解决了这个问题

例如：

when( mockedQuery.getSingleResult()).thenThrow(NoResultException.class);
//some code
Mockito.reset( mockedOracleQuery );
when(mockedQuery.getSingleResult()).thenReturn(stg);


您必须使用以下内容：

whenNew(ConfigService.class).withAnyArguments().thenReturn(configService);

当您必须显式调用对象的构造函数时，而不是在使用
注入时

假设
MyClass
包含行

@Resource
private ConfigService service;

在Junit中尝试以下操作：

@RunWith(PowerMockRunner.class)
public class Test{

    @InjectMocks
    private MyClass myClass;

    @Mock
    private ConfigService service;

    @Before
    public void setUp(){
        myClass = new MyClass();
        MockitoAnnotations.initMocks(this); // this row inits the mock of ConfiService 
                                            // and injects it in myClass

    }
}

最后但并非最不重要的一点：如果您不打算对任何其他内容（静态或私有方法/字段/其他构造函数）使用
PowerMockito
，那么您根本不能使用它。
再多一点代码和stacktrace会让它更清晰