2017-02-23 203 views
4

我有一個Spring RestController,儘管在Chrome開發人員工具中看到正確的數據,但是任何嘗試發佈到它的嘗試都會返回400錯誤請求。 @Valid註釋正在踢出它,因爲ParameterDTO對象根本沒有被填充。Spring RestController POST 400錯誤請求

我的控制器

@RestController 
@RequestMapping(path = "/api/parameters", consumes = {MediaType.APPLICATION_JSON_VALUE}, produces = {MediaType.APPLICATION_JSON_VALUE}) 
public class ParameterResource { 

    private final ParameterService parameterService; 

    @Autowired 
    public ParameterResource(ParameterService parameterService) { 
     this.parameterService = parameterService; 
    } 

    @GetMapping 
    public ResponseEntity<?> getParameters(@RequestParam(value = "subGroupId", required = false) Integer subGroupId) { 
     if (subGroupId != null) { 
      return ResponseEntity.ok(parameterService.getParameters(subGroupId)); 
     } 
     return ResponseEntity.ok(parameterService.getParameters()); 
    } 

    @PostMapping 
    public ResponseEntity<?> createParameter(@Valid ParameterDTO parameterData) { 
     int id = parameterService.saveParameter(parameterData); 
     URI uri = ServletUriComponentsBuilder.fromCurrentRequest().path("/{id}") 
       .buildAndExpand(id).toUri(); 
     return ResponseEntity.created(uri).build(); 
    } 

    @GetMapping(path = "/levels") 
    public ResponseEntity<?> getParameterLevels() { 
     return ResponseEntity.ok(ParameterLevels.getParameterLevelMap()); 
    } 

    @GetMapping(path = "/levels/{id}/values") 
    public ResponseEntity<?> getLevelValues(@PathVariable("id") int levelId) { 
     return ResponseEntity.ok(parameterService.getParameterLevelValues(levelId)); 
    } 

    @GetMapping(path = "/types") 
    public ResponseEntity<?> getParameterTypes() { 
     return ResponseEntity.ok(parameterService.getParameterTypes()); 
    } 
} 

我使用從JavaScript,雖然我的問題可能是有愛可信,但我使用郵差同樣的問題。我正在設置Content-Type和Accept標題。看起來Spring似乎並沒有對數據進行反序列化。

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+0

我認爲你缺少'@ RequestBody'之前'ParameterDTO parameterData'聲明 –

+0

那不需要控制器被聲明爲@RestController,在Spring 4中添加之前需要RequestBody – greyfox

+0

是的,這是必需的。什麼'@ RestController'給你的是'@ ResponseBody'邊界,而不是'@ RequestBody' –

回答

5

您需要ParameterDTO parameterData聲明添加註釋@RequestBody,如下圖所示:

@PostMapping 
    public ResponseEntity<?> createParameter(@RequestBody @Valid ParameterDTO parameterData) { 
     int id = parameterService.saveParameter(parameterData); 
     URI uri = ServletUriComponentsBuilder.fromCurrentRequest().path("/{id}") 
       .buildAndExpand(id).toUri(); 
     return ResponseEntity.created(uri).build(); 
    }