如何确定反序列化json字符串的类型?

我假设您在服务器端执行了JSON序列化,如下所示

try {
....
catch (SomeExceptionType ex)
    var resultbody = JsonConvert.SerializeObject(ex);
}

那么你的结果体会像这样

{
  "ClassName": "your.namespace.SomeExceptionType",
  "Message": "foo bar",
  "Data": null,
  "InnerException": null,
  "HelpURL": null,
  "StackTraceString": null,
  "RemoteStackTraceString": null,
  "RemoteStackIndex": 0,
  "ExceptionMethod": null,
  "HResult": -2146233088,
  "Source": null,
  "WatsonBuckets": null
}

JObject exJson = JsonConvert.DeserializeObject<JObject>(exString);
Type t = Type.GetType(exJson.Value<string>("ClassName"));
var ex = exJson.ToObject(t);

编辑

switch (exJson.Value<string>("ClassName")) {
    case "your.namespace.SomeExceptionType":
        {
            SomeExceptionType ex = exJson.ToObject<SomeExceptionType>();
        }
        break;
    case "your.namespace.OtherExceptionType":
        {
            OtherExceptionType ex = exJson.ToObject<OtherExceptionType>();
        }
        break;
    default:
        {
            Exception ex = exJson.ToObject<Exception>();
        }
        break;
    }

我从您的问题中了解到,从Api中您将得到Http状态代码BadRequest,它的结果将包含从Exception类继承的C#Exception。

如果你分析这一行

var ex = JsonConvert.DeserializeObject(response.Content.ReadAsStringAsync().Result);

它将从JSON解析到对象类。

更好的方法检查字符串包含

    String res= response.Content.ReadAsStringAsync().Result.toString();
    if(res.Contains("Type1Exeption")){
    throw new Type1Exception()
    }
else if(res.Contains("Type2Exeption")){
    throw new Type2Exception()
    }
else{
throw new Type3Exception()
}