MocMVC给出了HttpMessageNotReadableException

Question

我还在学习测试的方法,我正在尝试让MockMvc测试为我工作.这是一个简单的REST控制器,此时只使用帖子中json的信息进行一些身份验证.我实际上已经实现了代码,所以我知道它正在工作,因为我用正确的输入和我放在一起的错误消息都以json格式返回正确的响应.我的问题是测试使用HttpMessageNotReadableException失败,即使实际代码有效,所以我假设我没有正确设置我的测试.你们给予的任何帮助都会很棒.

这是我的控制器

@Controller
public class RequestPaymentController {
protected final Log logger = LogFactory.getLog(getClass());
private PaymentService paymentService;
private LoginService loginService;

@Autowired
public void setPaymentService(PaymentService paymentService){
    this.paymentService =  paymentService;
}
@Autowired
public void setLoginService(LoginService loginService){
    this.loginService =  loginService;
}

@RequestMapping(value = "/requestpayment", method = RequestMethod.POST, headers="Accept=application/json")
@ResponseBody
public ResponseEntity<PaymentResult> handleRequestPayment(@RequestBody PaymentRequest paymentRequest, HttpServletRequest request, HttpServletResponse response, BindingResult result) throws Exception{
    ResponseEntity<PaymentResult> responseEntity = null;
    new LoginValidator().validate(paymentRequest, result);
    boolean valid = loginService.isLoginValid(paymentRequest, result);
    if (valid){
      responseEntity = setValidResponse(paymentRequest);
    }else {
        throw new TumsException("exception message");

    }
    return responseEntity;
}


private ResponseEntity<PaymentResult> setValidResponse(PaymentRequest paymentRequest){
    PaymentResult paymentResult = paymentService.getResults(paymentRequest);

    return new ResponseEntity<PaymentResult>(paymentResult, HttpStatus.OK);
}


}

这是我的测试代码:

public class RequestPaymentControllerTest {

PaymentService mockPaymentService;
RequestPaymentController requestPaymentController;
HttpServletRequest mockHttpServletRequest;
HttpServletResponse mockHttpServletResponse;
PaymentRequest mockPaymentRequest;
BindingResult mockBindingResult;
LoginService mockLoginService;
PaymentResult mockPaymentResult;
MockMvc mockMvc;


@Before
public void setUp() throws Exception {
    mockPaymentService = createMock(PaymentService.class);
    mockHttpServletRequest = createMock(HttpServletRequest.class);
    mockHttpServletResponse = createMock(HttpServletResponse.class);
    mockPaymentRequest = createMock(PaymentRequest.class);
    requestPaymentController = new RequestPaymentController();
    mockBindingResult = createMock(BindingResult.class);
    mockLoginService = createMock(LoginService.class);
    requestPaymentController.setPaymentService(mockPaymentService);
    mockPaymentResult = createMock(PaymentResult.class);
    mockMvc = MockMvcBuilders.standaloneSetup(new RequestPaymentController()).build();

}

@After
public void tearDown() throws Exception {
    mockPaymentService = null;
    mockHttpServletRequest = null;
    mockHttpServletResponse = null;
    mockPaymentRequest = null;
    requestPaymentController = null;
    mockBindingResult = null;
    mockLoginService = null;
    mockPaymentResult = null;
    mockMvc = null;
}


@Test
public void testHandleRequestPayment() throws Exception{
    initializeStateForHandleRequestPayment();
    createExpectationsForHandleRequestPayment();
    replayAndVerifyExpectationsForHandleRequestPayment();

}



private void initializeStateForHandleRequestPayment(){

}

private void createExpectationsForHandleRequestPayment(){
    mockPaymentRequest.getServiceUsername();
    expectLastCall().andReturn("testuser");
    mockPaymentRequest.getServicePassword();
    expectLastCall().andReturn("password1!");
    mockLoginService.isLoginValid(mockPaymentRequest,mockBindingResult);
    expectLastCall().andReturn(true);
    mockPaymentService.getResults(mockPaymentRequest);
    expectLastCall().andReturn(mockPaymentResult);
}

private void replayAndVerifyExpectationsForHandleRequestPayment() throws Exception{
    replay(mockPaymentService, mockBindingResult, mockHttpServletRequest, mockHttpServletResponse, mockPaymentRequest, mockLoginService);
    requestPaymentController.setLoginService(mockLoginService);
    requestPaymentController.handleRequestPayment(mockPaymentRequest, mockHttpServletRequest, mockHttpServletResponse, mockBindingResult);
    mockMvc.perform(post("/requestpayment")
            .contentType(MediaType.APPLICATION_JSON)
            .accept(MediaType.APPLICATION_JSON))
            .andDo(print())
            .andExpect(status().isBadRequest());
    verify(mockPaymentService, mockBindingResult, mockHttpServletRequest, mockHttpServletResponse, mockPaymentRequest, mockLoginService);

}
}

andDo(print())的结果是:

MockHttpServletRequest:
     HTTP Method = POST
     Request URI = /requestpayment
      Parameters = {}
         Headers = {Content-Type=[application/json], Accept=[application/json]}

         Handler:
            Type = portal.echecks.controller.RequestPaymentController
          Method = public org.springframework.http.ResponseEntity<portal.echecks.model.PaymentResult> portal.echecks.controller.RequestPaymentController.handleRequestPayment(portal.echecks.model.PaymentRequest,javax.servlet.http.HttpServletRequest,javax.servlet.http.HttpServletResponse,org.springframework.validation.BindingResult) throws java.lang.Exception

  Resolved Exception:
            Type = org.springframework.http.converter.HttpMessageNotReadableException

    ModelAndView:
       View name = null
            View = null
           Model = null

        FlashMap:

MockHttpServletResponse:
          Status = 400
   Error message = null
         Headers = {}
    Content type = null
            Body = 
   Forwarded URL = null
  Redirected URL = null
         Cookies = []

Process finished with exit code 0

正如你所看到的,当我期待一个糟糕的请求状态时,测试通过,但我已经输入了日志记录,我知道我发回的ResponseBody有200状态.就像我说的,这是我第一次使用MockMvc,所以我认为我没有正确设置.有什么建议？

Answer 1

一个HttpMessageNotReadableException是

当read方法失败时,由HttpMessageConverter实现抛出.

您的回复中还会收到400 Bad Request.这应该都告诉您,您没有发送服务器所期望的内容.你的服务器期待什么？

@RequestMapping(value = "/requestpayment", method = RequestMethod.POST, headers="Accept=application/json")
@ResponseBody
public ResponseEntity<PaymentResult> handleRequestPayment(@RequestBody PaymentRequest paymentRequest, HttpServletRequest request, HttpServletResponse response, BindingResult result) throws Exception{

这里的主要内容是带@RequestBody注释的参数.因此,您要告诉服务器尝试PaymentRequest从HTTP POST请求的主体反序列化实例.

那么让我们看看你正在提出的要求

mockMvc.perform(post("/requestpayment")
        .contentType(MediaType.APPLICATION_JSON)
        .accept(MediaType.APPLICATION_JSON))
        .andDo(print())
        .andExpect(status().isBadRequest());

我没有看到你为请求提供正文.应该content(String)在那里的某个地方设置呼叫来设置POST请求的内容.这个内容应该是一个JSON序列化PaymentRequest.

请注意,因为您正在使用StandaloneMockMvcBuilder,您可能需要自己设置HttpMessageConverter实例,即.a MappingJackson2HttpMessageConverter序列化和反序列化JSON.

请注意,BindingResult参数应紧跟在与其相关的参数之后.像这样

@RequestMapping(value = "/requestpayment", method = RequestMethod.POST, headers="Accept=application/json")
@ResponseBody
public ResponseEntity<PaymentResult> handleRequestPayment(@Valid @RequestBody PaymentRequest paymentRequest, BindingResult result, HttpServletRequest request, HttpServletResponse response) throws Exception{

别忘了@Valid.

请注意这一点

requestPaymentController.setLoginService(mockLoginService);
requestPaymentController.handleRequestPayment(mockPaymentRequest, mockHttpServletRequest, mockHttpServletResponse, mockBindingResult);

与MockMvc您正在进行的测试完全无关.