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昨天我有一个有效的 Web API 实现。我今天进来了，我的帖子参数不再反序列化为我的实体对象

这是我的 api 控制器代码： 

    public class DocBooksMDController : ApiController
    {

        private BoxEntities db = new BoxEntities();

        // POST api/DocBooksMD/ack
        [HttpPost]
        [ActionName("Acknowledge")]
        public HttpResponseMessage MarkMessageAcknowledged(DocBooksMDMessage messageIn)
        {
            if (ModelState.IsValid)
            {
                // retrieve docBooksMDMessage
                var query = from messages in db.DocBooksMDMessages
                            where messages.MessageControlID == messageIn.MessageControlID
                            select messages;
                DocBooksMDMessage messageOut = query.FirstOrDefault();
                if (messageOut == null)
                {
                    return Request.CreateErrorResponse(HttpStatusCode.BadRequest, new ArgumentException("Invalid Message Control ID"));
                }

                // Set Acknowledgement and Feedback
                messageOut.DateAcknowledged = DateTime.Now;
                messageOut.DocBooksFeedback = messageIn.DocBooksFeedback;
                db.SaveChanges();

                // send response
                return Request.CreateResponse(HttpStatusCode.OK, messageOut);
            }
            else
            {
                return Request.CreateResponse(HttpStatusCode.BadRequest);
            }
        }

        // POST api/DocBooksMD/read
        [HttpPost]
        [ActionName("Read")]
        public HttpResponseMessage MarkMessageRead(DocBooksMDMessage messageIn)
        {
            if (ModelState.IsValid)
            {
                // retrieve docBooksMDMessage
                var query = from messages in db.DocBooksMDMessages
                            where messages.MessageControlID == messageIn.MessageControlID
                            select messages;
                DocBooksMDMessage messageOut = query.FirstOrDefault();
                if (messageOut == null)
                {
                    return Request.CreateErrorResponse(HttpStatusCode.BadRequest, new ArgumentException("Invalid Message Control ID"));
                }

                // Set Read and Feedback
                if (messageIn.DateRead == null) messageIn.DateRead = DateTime.Now;
                messageOut.DateRead = DateTime.Now;
                messageOut.DocBooksFeedback = messageIn.DocBooksFeedback;
                db.SaveChanges();

                // send response
                return Request.CreateResponse(HttpStatusCode.OK, messageOut);
            }
            else
            {
                return Request.CreateResponse(HttpStatusCode.BadRequest);
            }
        }

        protected override void Dispose(bool disposing)
        {
            db.Dispose();
            base.Dispose(disposing);
        }
    }
}

这是我的实体类：

public partial class DocBooksMDMessage
{
    public int ID { get; set; }
    public int ExamSourceID { get; set; }
    public string PatientLastName { get; set; }
    public string PatientFirstName { get; set; }
    public string PatientMRN { get; set; }
    public string ExamAccession { get; set; }
    public string ExamCode { get; set; }
    public string ExamDescription { get; set; }
    public string ReferringProviderCode { get; set; }
    public string ReferringProviderNPI { get; set; }
    public string ReferringProviderLastName { get; set; }
    public string ReferringProviderFirstName { get; set; }
    public string Message { get; set; }
    public string MessageControlID { get; set; }
    public System.DateTime DateSent { get; set; }
    public Nullable<System.DateTime> DateAcknowledged { get; set; }
    public Nullable<System.DateTime> DateRead { get; set; }
    public string DocBooksFeedback { get; set; }
}

这是昨天有效但今天无效的 json 请求：

Content-Type: application/json
Host: tbd:8080
Content-Length: 127
{
  "MessageControlID":"65991775",
  "DateAcknowledged":"2013-07-09T16:09:13.1564342-05:00",
  "DocBooksFeedback":"Test Feedback"
}

我真的不知道如何进行。

这表明该方法正在获取预期的请求正文：

string body = Request.Content.ReadAsStringAsync().Result;
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1 回答 1

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好的——这是官方的。我是个白痴。当我在提琴手工作时，我将内容类型从请求标头中删除。反序列化现在工作正常：

Content-Type: application/json
于 2013-07-11T13:51:31.357 回答