{ "No parameterless constructor defined for type of 'System.String[]'." } while deserailsing json

Question

这是我的控制器

[NoCache]
    public ActionResult SaveAssociate(string data)
    {
        JavaScriptSerializer json = new JavaScriptSerializer();
        List<string> mystring = json.Deserialize<List<string>>(data);
        return Content("Hai");
    }

表达数据价值:

[{"AssetName":"8888","AssetNumber":"8888","Classification":null,"ParentAsset":null,"SerialNumber":"8888","ParentCompany":"JPL Holdings","Barcode":null,"RFIDTags":null,"AssetId":"dfe2ae51-f153-4a67-bd3b-0114d8a40751","Notes":null,"Manufacturer":null,"DepartmentId":null,"Department":null,"SupplierId":null,"Supplier":null},{"AssetName":"552014","AssetNumber":"552014","Classification":null,"ParentAsset":"8888","SerialNumber":"552014","ParentCompany":"JPL Holdings","Barcode":null,"RFIDTags":null,"AssetId":"4109ba40-af78-486a-a40e-1d14a2d7b42f","Notes":null,"Manufacturer":null,"DepartmentId":null,"Department":null,"SupplierId":null,"Supplier":null},{"AssetName":"201","AssetNumber":"201","Classification":null,"ParentAsset":null,"SerialNumber":"2011","ParentCompany":"JPL Holdings","Barcode":null,"RFIDTags":null,"AssetId":"3e552280-16df-4c17-a4a5-1f61c4c96835","Notes":null,"Manufacturer":null,"DepartmentId":null,"Department":null,"SupplierId":null,"Supplier":null}]

在这一行List<string> mystring = json.Deserialize<List<string>>(data);

{"No parameterless constructor defined for type of 'System.String[]'."}

即使我这样做了

 [Serializable]
public class GetUser
{
    public GetUserdata[] Data { get; set; }
}
[Serializable]
public class GetUserdata
{
    public string AssetName { get; set; }
    public string AssetNumber { get; set; }
    public string Classification { get; set; }
    public string ParentAsset { get; set; }
    public string SerialNumber { get; set; }
    public string ParentCompany { get; set; }
    public string Barcode { get; set; }
    public string RFIDTags { get; set; }
    public string AssetId { get; set; }
    public string Notes { get; set; }
    public string Manufacturer { get; set; }
    public string DepartmentId { get; set; }
    public string Department { get; set; }
    public string SupplierId { get; set; }
    public string Supplier { get; set; }
}

控制器

 public ActionResult SaveAssociate(string data)
    {
        JavaScriptSerializer json = new JavaScriptSerializer();
        GetUser mystring = json.Deserialize<GetUser>(data);
        return Content("Hai");
    }

我得到错误"AssetTrackingSystem.Model类型。不支持GetUser'对数组进行反序列化。

帮我

Answer 1

不使用上面的代码，可以试试:

 public ActionResult SaveAssociate(string data)
 {
    JavaScriptSerializer json = new JavaScriptSerializer();
    GetUserdata[] myUsers = json.Deserialize<GetUserdata[]>(data);
    return Content("Hai");
  }

因为你的Json是作为对象的数组而不是数组的对象发送的。