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使用MockMvc post方法测试Spring Controller

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我试图在Spring Boot应用程序中测试我的控制器的方法 . 这是一个后 endpoints ,它在请求中获取一个id,并将此id传递给服务:

@Slf4j
@Controller
public class AdministrationController {

    private final AdministrationService administrationService;

    @Autowired
    public AdministrationController(AdministrationService administrationService) {
        this.administrationService = administrationService;
    }

    @PostMapping("/administration")
    public @ResponseBody ResponseEntity<String> deleteByMessageId(String id) {
        return new ResponseEntity<>(administrationService.deleteMessageById(id), HttpStatus.OK);
    }
}

控制器的这种方法的测试:

RunWith(SpringRunner.class)
@WebMvcTest(AdministrationController.class)
public class AdministrationControllerTest {

    @Autowired
    private MockMvc mvc;

    @MockBean
    private AdministrationService service;

    @Test
    public void 
    deleteByMessageId_whenCalled_thenServiceMethodIsCalledWithRequestParameters() throws Exception {

        Object randomObj = new Object() {
            public final String id = "1234";
        };

        ObjectMapper objectMapper = new ObjectMapper();
        String json = objectMapper.writeValueAsString(randomObj);


        MvcResult result = mvc.perform(
            post("/administration")
                    .contentType(MediaType.APPLICATION_JSON)
                    .content(json))
            .andExpect(status().isOk())
            .andReturn();

        verify(service, times(1)).deleteMessageById("1234");
}

}

当我运行此测试时,执行post请求,但是使用空体:

MockHttpServletRequest:
  HTTP Method = POST
  Request URI = /administration
   Parameters = {}
      Headers = {Content-Type=[application/json]}
         Body = <no character encoding set>
Session Attrs = {}

看来,即使我在测试中设置内容,它也不会出现在我发送的请求中 . 事实上,测试失败了:

Argument(s) are different! Wanted: "1234"
Actual invocation has different arguments: null

我在这里想念的是什么?如何使用MockMvc设置请求正文?

3 回答

  • 0

    尝试使用 .characterEncoding("utf-8"))

    MvcResult result = mvc.perform(post("/administration")
        .contentType(MediaType.APPLICATION_JSON)
        .content(json)
        .characterEncoding("utf-8"))
        .andExpect(status().isOk())
        .andReturn();
    
  • 0

    您肯定缺少方法参数的注释 .

    public @ResponseBody ResponseEntity<String> deleteByMessageId(String id)
    

    应该是这样的:

    public @ResponseBody ResponseEntity<String> deleteByMessageId(@RequestParam("id") String id)
    

    如果要将其用作请求参数 .

    看看Spring MVC documentation here . 当然,编写测试取决于您对此ID的期望 .

  • 4

    另一种选择(受@ stelios-anastasakis回答的启发)是在 Content-Type Headers 内提供字符编码:

    MvcResult result = mvc.perform(post("/administration")
        .contentType(MediaType.APPLICATION_JSON_UTF8_VALUE)
        .content(json)
        .andExpect(status().isOk())
        .andReturn();
    

    请注意,我们在这里使用 MediaType.APPLICATION_JSON_UTF8_VALUE 而不是 MediaType.APPLICATION_JSON .

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