java Spring启动控制器应该如何处理“丢失”的请求头？

Question

我正在编写一个Spring启动应用程序。我的控制器有2个自定义请求头。我执行了几个测试，结果发现我的应用程序在头不存在时返回“404”

然而，我期望这会导致“400”错误

有人能详细说明为什么会发生这种情况吗？我该如何妥善处理？就像在告诉服务的消费者报头丢失一样

@RestController("fundsConfirmationController")
@RequestMapping(
    value="/accounts/{accountId}/funds-confirmations",
    headers = {"X-CAF-MSGID", "X-AccessToken"}
) 
public class FundsConfirmationController implements FundsConfirmationControllerI{

private FundsConfirmationServiceI fundsConfirmationService;

@Autowired
public FundsConfirmationController(FundsConfirmationServiceI fundsConfirmationService){
    this.fundsConfirmationService = fundsConfirmationService;
}

@GetMapping(
        consumes = MediaType.APPLICATION_JSON_VALUE,
        produces = MediaType.APPLICATION_JSON_VALUE
)
public ResponseEntity<?> fundsConfirmation(@RequestHeader(value="X-CAF-MSGID") String messageId,
                                           @RequestHeader(value="X-AccessToken") String accessToken,
                                           FundsConfirmationRequest requestParams) { ... }

Answer 1

有两种解决方案可以做到这一点

首先使用@RequestHeader和required{}

@RequestMapping(value = "/{blabla}", method = RequestMethod.POST)
public void post(@RequestHeader(value="X-CAF-MSGID", required=false) String X-CAF-MSGID) {
    if(X-CAF-MSGID == null) {
        // Your JSON Error Handling
    } else {
        // Your Processing
    }
}

第二次使用HttpServletRequest而不是@RequestHeader

@RequestMapping(value = "/{blabla}", method = RequestMethod.POST)
public void post(HttpServletRequest request) {
    String X-CAF-MSGID = request.getHeader("X-CAF-MSGID");
    if(X-CAF-MSGID == null) {
        // Your JSON Error Handling
    } else {
        // Your Processing
    }
}