不受支持的媒体类型ASP.NET Core Web API [英] Unsupported media type ASP.NET Core Web API

问题描述

在前端，我使用Angular从表单收集som数据并将其发送到我的服务器端控制器.如下图所示，我在控制器和服务上获取了数据($ scope.newData)，但是当数据到达服务器时，出现以下错误:不支持的媒体类型"，并且newData为空.

On the front-end i use Angular to collect som data from the form and send it to my server-side controllers. As the image shows below, i get the data ($scope.newData) on my controller and service, but when it reaches the server, i get the following error: "Unsupported media type" and my newData is empty.

我的控制器:

// Create new salesman
  $scope.addSalesman = function (newData) {
    console.log("Controller");
    console.log($scope.newData);
    myService.addNewSalesman($scope.newData).then(function (data) {
      console.log(data);
    }, function (err) {
      console.log(err);
    });
  };

我的服务:

addNewSalesman: function (newData) {
            console.log("service");
            console.log(newData)
            var deferred = $q.defer();
            $http({
                method: 'POST',
                url: '/api/Salesman',
                headers: { 'Content-type': 'application/json' }
            }, newData).then(function (res) {
                deferred.resolve(res.data);
            }, function (res) {
                deferred.reject(res);
            });
            return deferred.promise;
        }

我的推销员模型:

public class Salesman
    {
        public int SalesmanID { get; set; }
        public string FirstName { get; set; }
        public string LastName { get; set; }
        public string Gender { get; set; }
        public string BirthDate { get; set; }
        public int Phone { get; set; }
        public string Adress { get; set; }
        public string City { get; set; }
        public int Postal { get; set; }
        public string Role { get; set; }
    }

我的服务器端控制器:

[Route("api/[controller]")]
public class SalesmanController : Controller
{

    private readonly DataAccess _DataAccess;

    public SalesmanController() 
    { 
        _DataAccess = new DataAccess(); 
    } 

    [HttpPost]
    public IActionResult PostSalesman([FromBody] Salesman newData)
    {
        return Ok(newData); 
    }

推荐答案

您发送的标头错误.您正在发送Content-Type: application/json，但是您必须发送Accept: application/json.

The header you are sending is wrong. You are sending Content-Type: application/json, but you have to send Accept: application/json.

Content-Type: application/json到客户端，客户端必须发送Accept来告诉服务器它接受哪种响应类型.

Content-Type: application/json is what the server must send to the client and the client must send Accept to tell the server which type of response it accepts.

addNewSalesman: function (newData) {
        console.log("service");
        console.log(newData)
        var deferred = $q.defer();
        $http({
            method: 'POST',
            url: '/api/Salesman',
            headers: { 'Accept': 'application/json' }
        }, newData).then(function (res) {
            deferred.resolve(res.data);
        }, function (res) {
            deferred.reject(res);
        });
        return deferred.promise;
    }

应该这样做.另请参阅MDN上的"内容协商".

Should do it. Also see "Content negotiation" on MDN.

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