web api JSON模型为空

当我将json响应发送回我的api时，模型为report null且不更新。我已经将内容类型设置为application/json

请求：

public HttpResponseMessage Post([FromUri] Response response)
{
    try
    {
        if (ModelState.IsValid)
        {
            using (NPSEntities entities = new NPSEntities())
            {
                entities.Responses.Add(response);
                entities.SaveChanges();
                return Request.CreateResponse(HttpStatusCode.OK);
            }
        }
        else
        {
            return Request.CreateResponse(HttpStatusCode.InternalServerError, "Invalid Model");
        }
    }
    catch (Exception ex)
    {
        return Request.CreateResponse(HttpStatusCode.InternalServerError, ex.Message);
        throw;
    }
}

public partial class Response
{
    public int ResponseID { get; set; }
    public string SurveyID { get; set; }
    public string QuestionID { get; set; }
    public string Responses { get; set; }
    public Nullable<System.DateTime> ModifyDate { get; set; }
}

[{“调查ID”：“55”，“问题ID”：“4”，“回答”：6}，{“调查ID”：“55”，“问题ID”：“12”，“回答”：“1”}]

控制器：

public HttpResponseMessage Post([FromUri] Response response)
{
    try
    {
        if (ModelState.IsValid)
        {
            using (NPSEntities entities = new NPSEntities())
            {
                entities.Responses.Add(response);
                entities.SaveChanges();
                return Request.CreateResponse(HttpStatusCode.OK);
            }
        }
        else
        {
            return Request.CreateResponse(HttpStatusCode.InternalServerError, "Invalid Model");
        }
    }
    catch (Exception ex)
    {
        return Request.CreateResponse(HttpStatusCode.InternalServerError, ex.Message);
        throw;
    }
}

public partial class Response
{
    public int ResponseID { get; set; }
    public string SurveyID { get; set; }
    public string QuestionID { get; set; }
    public string Responses { get; set; }
    public Nullable<System.DateTime> ModifyDate { get; set; }
}

型号：

public HttpResponseMessage Post([FromUri] Response response)
{
    try
    {
        if (ModelState.IsValid)
        {
            using (NPSEntities entities = new NPSEntities())
            {
                entities.Responses.Add(response);
                entities.SaveChanges();
                return Request.CreateResponse(HttpStatusCode.OK);
            }
        }
        else
        {
            return Request.CreateResponse(HttpStatusCode.InternalServerError, "Invalid Model");
        }
    }
    catch (Exception ex)
    {
        return Request.CreateResponse(HttpStatusCode.InternalServerError, ex.Message);
        throw;
    }
}

public partial class Response
{
    public int ResponseID { get; set; }
    public string SurveyID { get; set; }
    public string QuestionID { get; set; }
    public string Responses { get; set; }
    public Nullable<System.DateTime> ModifyDate { get; set; }
}

公共部分类响应
{
公共int响应ID{get；set；}
公共字符串SurveyID{get；set；}
公共字符串QuestionID{get；set；}
公共字符串响应{get；set；}
公共可为空的ModifyDate{get；set；}
}

我看到的第一个问题是，您正在发送一个对象数组，但您的方法只需要一个对象。尝试将方法签名更改为

IEnumerable response

。谢谢。我找到了它，而不是使用

IEnumerable response

我使用了

List response

并反序列化了对象