如何使用 Post 方法测试在 Rest 服务上获取参数

How to test getting parameters on the Rest service using the Post method

我正在尝试使用 Post 方法测试获取处理请求的参数

@RestController
@RequestMapping("api")
public class InnerRestController {

…
    @PostMapping("createList")
    public ItemListId createList(@RequestParam String strListId,
@RequestParam String strDate) {


…
        return null;
    }
}

变体 1

@RunWith(SpringRunner.class)
@SpringBootTest(webEnvironment = SpringBootTest.WebEnvironment.RANDOM_PORT)
class InnerRestControllerTest {

    @LocalServerPort
    private int port;

    @Autowired
    private TestRestTemplate restTemplate;

    @Test
    void innerCreatePublishList() {

        String url = "http://localhost:" + this.port;

        String uri = "/api/createList";

        String listStr = "kl";

        String strDate = "10:21";

        URI uriToEndpoint = UriComponentsBuilder
                .fromHttpUrl(url)
                .path(uri)
                .queryParam("strListId", listStr)
                .queryParam("strDate ", strDate)
                .build()
                .encode()
                .toUri();

        ResponseEntity< ItemListId > listIdResponseEntity =
                restTemplate.postForEntity(uri, uriToEndpoint, ItemListId.class);


    }
}

变体 2

@Test
void createList() {

        String uri = "/api/createList";

        String listStr = "kl";

        String strDate = "10:21";

    UriComponentsBuilder builder = UriComponentsBuilder.fromHttpUrl(uri)
                .queryParam("strListId", listStr)
                .queryParam("strDate ", strDate);

    Map<String, String> map = new HashMap<>();

    map.put("strListId", listStr);//request parameters
    map.put("strDate", strDate);


    ResponseEntity< ItemListId > listIdResponseEntity =
            restTemplate.postForEntity(uri, map, ItemListId.class);


}

Update_1

在我的项目中异常是这样处理的:

public final class ErrorResponseDto {

    private  String errorMsg;

    private  int status;

    @JsonFormat(shape = JsonFormat.Shape.STRING, pattern = "yyyy-MM-dd hh:mm:ss")
    LocalDateTime timestamp;

...
@RestControllerAdvice
public class ExceptionAdviceHandler {

    @ExceptionHandler(value = PublishListException.class)
    public ResponseEntity<ErrorResponseDto> handleGenericPublishListDublicateException(PublishListException e) {

        ErrorResponseDto error = new ErrorResponseDto(e.getMessage());
        error.setTimestamp(LocalDateTime.now());
        error.setStatus((HttpStatus.CONFLICT.value()));

        return new ResponseEntity<>(error, HttpStatus.CONFLICT);
    }   

}

在方法中,必要时,我抛出一个特定的异常...

.w.s.m.s.DefaultHandlerExceptionResolver : Resolved [org.springframework.web.bind.MissingServletRequestParameterException: Required String parameter 'strListId' is not present]

谁知道错误是什么。请说明您需要在此处添加什么以及为什么?

我们来看看 postEntitydeclarations:

postForEntity(URI url, Object request, Class<T> responseType)
...
postForEntity(String url, Object request, Class<T> responseType, Object... uriVariables)

如您所见,第一个参数是 URIString with uriVariables,但第二个参数始终是请求实体。

在您的第一个变体中,您将 uri 字符串作为 URI,然后将 uriToEndpoint 作为请求实体传递,假装它是请求对象。正确的解决方案是:

ResponseEntity<ItemListId> listIdResponseEntity =
                restTemplate.postForEntity(uriToEndpoint, null, ItemListId.class);

处理您的意见。

如果服务器响应 HTTP 409,RestTemplate 将抛出您的 ErrorResponseDto 内容的异常。您可以捕获 RestClientResponseException 并反序列化存储在异常中的服务器响应。像这样:

try {
  ResponseEntity<ItemListId> listIdResponseEntity =
                restTemplate.postForEntity(uriToEndpoint, null, 
  ItemListId.class);
  
  ...
} catch(RestClientResponseException e) {
  byte[] errorResponseDtoByteArray  = e.getResponseBodyAsByteArray();
  
  // Deserialize byte[] array using Jackson
}