java - 如何使用 Spring 异常处理 POST REST 正确的错误状态代码

Question

我正在尝试处理 POST 请求中丢失的 json 数据。我的 Controller 类

@Controller
@RequestMapping("/testMetrics")

public class TestMetricsEndPoint extends StatusEndpointHandler implements RestEndPoint<TestMetrics,String> {

@Autowired
private ObjectMapper mapper;

@Autowired
private TestMetricsService testMetricsService;

@Override
public Status get(String id) {
    // TODO Auto-generated method stub
    return null;
}


@Override
@RequestMapping(method = RequestMethod.POST,consumes = "application/json", produces = "application/json")
public @ResponseBody Status create(@RequestBody TestMetrics core, BindingResult bindingResult) {
    try {
    if(bindingResult.hasErrors()){
        throw new InvalidRequestException("Add failed, Please try again ", bindingResult);
    }
    if((core.getGroupName()==""||core.getGroupName()==null)&&(core.getTestName()==null||core.getTestName()=="")){

            throw new MissingParametersException(HttpStatus.BAD_REQUEST.value(),"Please provide all necessary parameters");
        } 
    TestMetrics dataObject = testMetricsService.create(core);
    return response(HttpStatus.CREATED.value(),dataObject);
    }catch (MissingParametersException e) {
        return             response(HttpStatus.BAD_REQUEST.value(),e.getLocalizedMessage());
    }

}

扩展类:

public class StatusEndpointHandler {


public Status response(Integer statusCode,Object data){
    Status status = new Status();
    status.setData(data);
    status.setStatus(statusCode);



    return status;
}

}

实现的接口(interface):

 public interface RestEndPoint<T extends SynRestBaseJSON, ID extends    Serializable> {

Status get(ID id);

Status create(T entity, BindingResult bindingResult);}

结果:

请查看突出显示的部分因此，当我尝试通过 POSTMAN 测试结果时，我得到的状态为 200 OK。我不知道如何解决它。请帮助我解决这种情况。如何获取正确的状态码？

Answer 1

您应该将返回类型从 @ResponseBody 更改为 ResponseEntity这将允许您操作 header ，从而设置状态，这是文档中的片段

 @RequestMapping("/handle")
 public ResponseEntity<String> handle() {
   URI location = ...;
   HttpHeaders responseHeaders = new HttpHeaders();
   responseHeaders.setLocation(location);
   responseHeaders.set("MyResponseHeader", "MyValue");
   return new ResponseEntity<String>("Hello World", responseHeaders, HttpStatus.CREATED);
 }