C# 如何使用WebRequest（无模型）将对象传递给外部Web Api ASP.NET MVC

我有一个asp.NETMVC和外部WEBAPI。我想按以下顺序传递数据：

从Ajax到MVC控制器

从MVC控制器到外部WEBAPI

外部WEBAPI发送响应

MVC控制器收到响应

MVC控制器返回对AJAX的响应

问题: 它可以保存到数据库，但所有值都是0。好像我经过的东西不见了，但我不知道在哪里

我真的需要帮助。谢谢

下面是我调用MVC控制器的Ajax代码：

function savePostApplication(theData) {
 var insert = {};
 insert.JobTitleId = JobTitleId;
 insert.Division = Division;
 insert.SalaryScaleId = SalaryScaleId;
 insert.DepartmentId = DepartmentId;
 insert.MinistryId = MinistryId;

 $.post("/Advert/AddAdvertApplication", theData,
         function (response) {
            alert(response);
 });
}

这是我的MVC控制器代码：

public String AddAdvertApplication(JSON data)
        {
            var url = "https://localhost:44331/api/jobadvertisementdetails";

            var wr = WebRequest.Create(url);
            wr.Method = "POST";

            string json = JsonConvert.SerializeObject(data);
            byte[] byteArray = Encoding.UTF8.GetBytes(json);

            wr.ContentType = "application/x-www-form-urlencoded";

            wr.ContentLength = byteArray.Length;

            var dataStream = wr.GetRequestStream();

            dataStream.Write(byteArray, 0, byteArray.Length);

            dataStream.Close();

            WebResponse response = wr.GetResponse();

            var Status = ((HttpWebResponse)response).StatusDescription;

            dataStream = response.GetResponseStream();

            StreamReader reader = new StreamReader(dataStream);

            string responseFromServer = reader.ReadToEnd();
            reader.Close();
            dataStream.Close();
            response.Close();

            return responseFromServer;
        }

这是我的WEBAPI代码：

public String PostJobAdvertisementDetail(JobAdvertisementDetail jobAdvertisementDetail)
        {
            try
            {
                DataTable table = new DataTable();

                String query = @"insert into dbo.JobAdvertisementDetails (JobTitleId, Division, SalaryScaleId, DepartmentId, MinistryId) values (" + jobAdvertisementDetail.JobTitleId +
                    @"," + jobAdvertisementDetail.Division + "," + jobAdvertisementDetail.SalaryScaleId +
                    @","+jobAdvertisementDetail.DepartmentId+","+jobAdvertisementDetail.MinistryId+")";

                using(var con = new SqlConnection(ConfigurationManager.ConnectionStrings["CONN"].ConnectionString))
                using(var cmd = new SqlCommand(query, con))
                using(var da = new SqlDataAdapter(cmd))
                {
                    cmd.CommandType = CommandType.Text;
                    da.Fill(table);
                }
                return "Data Saved";
            }
            catch (Exception ex)
            {
                return "Error";
            }
        }

更新：

---

现在可以了。我只是将内容类型从“application/x-www-form-urlencoded”更改为“application/json”

您正在填充

insert

但正在传递

数据

…您是在传递数据还是在插入？如果您发送的是json数据，那么AddAdvertApplication方法中的wr.ContentType应该是“application/x-www-form-urlencoded”，如果有效，请尝试一下。我会一直从ajax、controller传递数据，最后插入webapi