Question

大家好我正在尝试使用Newtonsoft Json将JSON解析为c＃类。我试图解析的JSON如下 -

[
  {
    "$type": "Tfl.Api.Presentation.Entities.Line, Tfl.Api.Presentation.Entities",
    "id": "bakerloo",
    "name": "Bakerloo",
    "modeName": "tube",
    "disruptions": [ ],
    "created": "2016-05-10T15:41:47.997",
    "modified": "2016-05-10T15:41:47.997",
    "lineStatuses": [
      {
        "$type": "Tfl.Api.Presentation.Entities.LineStatus, Tfl.Api.Presentation.Entities",
        "id": 0,
        "statusSeverity": 10,
        "statusSeverityDescription": "Good Service",
        "created": "0001-01-01T00:00:00",
        "validityPeriods": [ ]
      }
    ],
    "routeSections": [ ],
    "serviceTypes": [
      {
        "$type": "Tfl.Api.Presentation.Entities.LineServiceTypeInfo, Tfl.Api.Presentation.Entities",
        "name": "Regular",
        "uri": "/Line/Route?ids=Bakerloo&serviceTypes=Regular"
      }
    ]
  },
  {
    "$type": "Tfl.Api.Presentation.Entities.Line, Tfl.Api.Presentation.Entities",
    "id": "central",
    "name": "Central",
    "modeName": "tube",
    "disruptions": [ ],
    "created": "2016-05-10T15:41:48.45",
    "modified": "2016-05-10T15:41:48.45",
    "lineStatuses": [
      {
        "$type": "Tfl.Api.Presentation.Entities.LineStatus, Tfl.Api.Presentation.Entities",
        "id": 0,
        "statusSeverity": 10,
        "statusSeverityDescription": "Good Service",
        "created": "0001-01-01T00:00:00",
        "validityPeriods": [ ]
      }
    ],
    "routeSections": [ ],
    "serviceTypes": [
      {
        "$type": "Tfl.Api.Presentation.Entities.LineServiceTypeInfo, Tfl.Api.Presentation.Entities",
        "name": "Regular",
        "uri": "/Line/Route?ids=Central&serviceTypes=Regular"
      }
    ]
  }
]

通过以下代码块检索JSON -

public static async Task<List<TubeAPI>> GetTubeStatusAsync()
{
 string url = 
String.Format("https://api.tfl.gov.uk/Line/central,victoria/Status/detail=true&app_id=&app_key=");
HttpClient http = new HttpClient();
            var response = await http.GetAsync(url);
            var jsonMessage = await response.Content.ReadAsStringAsync();
 var result = JsonConvert.DeserializeObject<List<TubeAPI>>(jsonMessage);
 return result;
}

我想要序列化的类如下 -

public class TubeAPI
    {
        public RootArray[] Property1 { get; set; }
    }

    public class RootArray
    {
        public string type { get; set; }
        public string id { get; set; }
        public string name { get; set; }
        public string modeName { get; set; }
        public object[] disruptions { get; set; }
        public DateTime created { get; set; }
        public DateTime modified { get; set; }
        public Linestatus[] lineStatuses { get; set; }
        public object[] routeSections { get; set; }
        public Servicetype[] serviceTypes { get; set; }
    }

    public class Linestatus
    {
        public string type { get; set; }
        public int id { get; set; }
        public int statusSeverity { get; set; }
        public string statusSeverityDescription { get; set; }
        public DateTime created { get; set; }
        public object[] validityPeriods { get; set; }
    }

    public class Servicetype
    {
        public string type { get; set; }
        public string name { get; set; }
        public string uri { get; set; }
    }

我已将调试器设置为var result以进行调试，并查看解析是否通过，并且我在类中有数据。但这些课程没有填充！

如您所见，Property1字段为空。我很困惑，我在这里做错了什么？

Answer 1

您正在反序列化为List<TubeAPI>。您应该反序列化为List<RootArray>，因为这是与您的JSON对应的结构。你有一个RootArray数组，而不是TubeAPI数组。如果您将所有JSON包装在引号中，那么您将拥有单数TubeAPI。

var result = JsonConvert.DeserializeObject<List<RootArray>>(jsonMessage);

无法在UWP应用中反序列化JSON

1 个答案: