如另一个StackOverflow MariuszS' answer about Mocking static methods with Mockito中所述：

  

在Mockito顶部使用PowerMockito。

     

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更多信息：

     

  
• Why doesn't Mockito mock static methods?
  

PowerMockito添加了更多功能，并允许模拟私有方法，静态方法等。

有了这个，您也许应该模拟toString的实例：

Repository

不要忘记在测试类中添加注释：

// In your test method
PowerMockito.mockStatic(Repository.class);

在我的示例中，@RunWith(PowerMockRunner.class) @PowerMockRunnerDelegate(SpringRunner.class) // Since you are using SpringBoot @PrepareForTest(Repository.class) @PowerMockIgnore({"javax.management.*","javax.net.ssl.*","javax.security.*"}) // Avoid certain classloading related issues,not mandatory 被Mockito.when()代替。看起来可能如下：

PowerMockito.doReturn(...).when(...)

请注意，我分别用@Test public void testUpdateOut() { Entity entity1 = new Entity (); entity1.setType(2); PowerMockito.mockStatic(Repository.class); PowerMockito.doReturn(entity1).when( Repository.class,"findByTypeAndParams",// The name of the method Mockito.anyInt(),// The arguments Mockito.anyString(),Mockito.anyString(),Mockito.anyString() ); // Your test notificationServiceMock.updateNotification("AX",entity1); // And at the end of the test: PowerMockito.verifyStatic(); // It will verify that all statics were called one time } 和any(Integer.class)替换了您的any(String.class)和anyInt()。

我希望这会有所帮助！