AWS Api 网关对 .NET Core 中 JSON 的响应答案

【问题标题】：AWS Api gateway response to JSON in .NET CoreAWS Api 网关对 .NET Core 中 JSON 的响应
【发布时间】：2020-07-09 15:18:17
【问题描述】：

我正在做一个项目，我需要在我的 .NET 核心 API 中使用 AWS API 网关端点。我收到了来自 AWS api 的响应，但它是 application/json 格式。

https://hbgamarapi.azurewebsites.net/GetPressValues

AWS SDK 中没有可用的方法将以下响应转换为 JSON。

这是我的控制器代码

var _val = string.Empty;

        
            using (var _client = CreateApiClient.CreateClient(DataUrl.AkranesWheightUser))
            {
                using (var _reponse = await _client.GetAsync(DataUrl.WheightAkranes))
                {

                    _val = await _reponse.Content.ReadAsStringAsync();

                var jsonDoc = Document.FromJson(_val);
                var res = jsonDoc.ToJson();
                
                
                }
            }
        
        return _val;

这是来自 AWS api 网关的响应

{"Items": [{"Thyngd": {"N": "16"}, "Tegund": {"S": "-"}, "Lota": {"N": "18"}, "ID": {"N": "1838"}, "Deild": {"S": "Vignir G. "}, "Dagur": {"S": "20/08/19 10:44:40"}}, {"Deild_Nr": {"N": "307"}, "Lota": {"N": "21"}, "Dagur": {"S": "22/06/20 06:21:53"}, "Thyngd": {"N": "33"}, "Tegund": {"S": "Almennt"}, "ID": {"N": "2289"}, "Deild": {"S": "NORDANFISK"}, "FL_Nr": {"N": "500"}}, {"Thyngd": {"N": "200"}, "Tegund": {"S": "-"}, "Lota": {"N": "0"}, "ID": {"N": "1007"}, "Deild": {"S": "Vignir G. "}, "Dagur": {"S": "10/07/18 08:56:01"}}, {"Thyngd": {"N": "63"}, "Tegund": {"S": "-"}, "Lota": {"N": "18"}, "ID": {"N": "1581"}, "Deild": {"S": "Vignir G. "}, "Dagur": {"S": "09/04/19 07:43:16"}}, {"Thyngd": {"N": "237"}, "Tegund": {"S": "-"}, "Lota": {"N": "0"}, "ID": {"N": "1175"}, "Deild": {"S": "Vignir G. "}, "Dagur": {"S": "03/10/18 10:33:58"}}, {"Thyngd": {"N": "341"}, "Tegund": {"S": "-"}, "Lota": {"N": "0"}, "ID": {"N": "1259"}, "Deild": {"S": "Vignir G. "}, "Dagur": {"S": "13/11/18 08:44:09"}}, {"Thyngd": {"N": "8"}, "Tegund": {"S": "-"}, "Lota": {"N": "18"}, "ID": {"N": "1933"}, "Deild": {"S": "Br\u0153\u00f0sla"}, "Dagur": {"S": "25/09/19 9:34:39"}}, {"Thyngd": {"N": "221"}, "Tegund": {"S": "-"}, "Lota": {"N": "0"}, "ID": {"N": "1091"}, "Deild": {"S": "BIAMAR"}, "Dagur": {"S": "20/08/18 08:03:27"}}, {"Thyngd": {"N": "235"}, "Tegund": {"S": "-"}, "Lota": {"N": "0"}, "ID": {"N": "1303"}, "Deild": {"S": "Br\u0153\u00f0sla"}, "Dagur": {"S": "29/11/18 11:36:58"}}, {"Thyngd": {"N": "32"}, "Tegund": {"S": "-"}, "Lota": {"N": "18"}, "ID": {"N": "1892"}, "Deild": {"S": "Vignir G. "}, "Dagur": {"S": "06/09/19 11:19:52"}}, {"Deild_Nr": {"N": "308"}, "Lota": {"N": "21"}, "Dagur": {"S": "20/05/20 08:02:19"}, "Thyngd": {"N": "63"}, "Tegund": {"S": "Almennt"}, "ID": {"N": "2251"},

请提出可行的方法

【问题讨论】：

嗨，@usmanali，我已经发布了解决您问题的代码。它对我有用。如果答案解决了您的问题，请标记它以帮助更多人。如果没有，我们或许可以继续探索解决方案。感谢您的时间和努力。
@MichelleWang 先生，问题已解决，感谢您的宝贵时间。 :)

标签： amazon-web-services asp.net-core-mvc amazon-dynamodb asp.net-core-webapi amazon-gateway

【解决方案1】：

您可以使用Newtonsoft 反序列化对象。根据您的请求日期，使用ExpandoObjectConverter 将复杂模型从 JSON 转换。

首先，安装Newtonsoft 到NuGet。

    using Newtonsoft.Json;
    using Newtonsoft.Json.Converters;

    
    [Route("/GetPressValues")]
    public async Task<dynamic> GetJsonAsync() 
    {
        var _val = string.Empty;

        dynamic pressValues;

        using (var client = _clientFactory.CreateClient())
        {
            using (var _reponse = await client.GetAsync("https://hbgamarapi.azurewebsites.net/GetPressValues"))
            {

                _val = await _reponse.Content.ReadAsStringAsync();
                var converter = new ExpandoObjectConverter();
                
                //use ExpandoObject whose members can be dynamically added
                pressValues = JsonConvert.DeserializeObject<ExpandoObject>(_val, converter);

            }
        }

        return pressValues.Items;//Here you get List of PressValues
    }

测试截图：

【讨论】：