RestSharp：反序列化 json 字符串

Question

我一直在尝试反序列化 return response.Content 字符串但徒劳无功。 WebApi 操作返回修改后的 modelState 以及其他自定义错误。

在 MVC 方面，我尝试了以下方法均无效：

JsonDeserializer deserial = new JsonDeserializer();
  var json = deserial.Deserialize<dynamic>(response);

和

    var json = JsonConvert.DeserializeObject<WebApiReturnModel>(response.Content);

    public class WebApiReturnModel
    {
        public string Message { get; set; }

        public ModelStateDictionary ModelState { get; set; }
    }

response.Content 返回的示例：

{
    "Message":"The request is invalid.",
    "ModelState":{
        "": ["Name Something is already taken.","Email 'ab@something.com' is already taken."]
            }
}

如何让它工作？

Answer 1

我尝试使用 dynamic 方法，对我来说这很有效：

var input = @"{
                ""Message"":""The request is invalid."",
                ""ModelState"":{
                            """": [""Name Something is already taken."",""Email 'ab@something.com' is already taken.""]
                }
            }";

// This uses JSON.Net, as your second snippet of code.
var json = JsonConvert.DeserializeObject<dynamic>(input);

// This will get: The request is invalid.
var message = json["Message"].Value;

foreach (var m in json["ModelState"][""])
{
    // This will get the messages in the ModelState.
    var errorMessage = m.Value;
}

如果不知道ModelState 中的键名，可以使用嵌套循环：

foreach (var m in json["ModelState"])
{
    foreach (var detail in m.Value)
    {
        // This will get the messages in the ModelState.
        var errorMessage = detail.Value;
    }
}