将嵌套 Json 反序列化为列表

Question

我想反序列化以下嵌套的 json。为此，我需要数据：- state, lat, lng, time - 从 json 到列表中。在 Newtonsoft 网站上，我找不到任何对我有帮助的信息。有谁知道如何反序列化这个 json?

    [
    {
    "data":[
        {
        "state":"STOP",
        "lat":51.99225976,
        "lng":6.97070897,
        "accuracy":55,
        "fixTime":10,
        "source":"wifi",
        "geozones":{
        },
        "address":"xyz",
        "type":"location",
        "id":1121304719,
        "time":"2022-02-18T15:15:00+0000",
        "insertTime":"2022-02-18T15:46:55+0000",
        "seqNbr":1
    },
        {
        "state":"START",
        "lat":51.99225976,
        "lng":6.97070897,
        "accuracy":55,
        "fixTime":10,
        "source":"wifi",
        "geozones":{
        },
        "address":"xyz",
        "type":"location",
        "id":1121206955,
        "time":"2022-02-18T14:50:00+0000",
        "insertTime":"2022-02-18T14:50:16+0000",
        "seqNbr":0
    },
        {
        "state":"STOP",
        "lat":51.99225976,
        "lng":6.97070897,
        "accuracy":55,
        "fixTime":10,
        "source":"wifi",
        "geozones":{
        },
        "address":"xyz",
        "type":"location",
        "id":1121167953,
        "time":"2022-02-18T14:03:00+0000",
        "insertTime":"2022-02-18T14:34:54+0000",
        "seqNbr":15
    },
        ...
],
"truncated":false,
"skipped":false,
"serial":"H3HU7Y",
"name":"SNT3.5 H3HU7Y",
"type":"seri"
}
]

Answer 1

一个简单的方法是使用 JArray 并遍历 DOM 中的值，根据需要提取它们：

var parsed = JArray.Parse(json);
foreach (var item in parsed[0]["data"])
{
    Console.WriteLine($"{item["lat"]} {item["lng"]} {item["fixTime"]}");
}

不过，更健壮的方法是反序列化为类。我刚刚将你的 json 粘贴到 https://json2csharp.com 中。它甚至建议如何反序列化您的 json（尽管，由于 json 代表一个数组，我必须更新以反序列化为 List<Root>）。这是结果（评论是我的）：

// use this to deserialize
List<Root> myDeserializedClass = JsonConvert.DeserializeObject<List<Root>>(myJsonResponse);

// classes
// you'll need to define what goes here
public class Geozones
{
}

public class Datum
{
    public string state { get; set; }
    public double lat { get; set; }
    public double lng { get; set; }
    public int accuracy { get; set; }
    public int fixTime { get; set; }
    public string source { get; set; }
    public Geozones geozones { get; set; }
    public string address { get; set; }
    public string type { get; set; }
    public int id { get; set; }
    public DateTime time { get; set; }
    public DateTime insertTime { get; set; }
    public int seqNbr { get; set; }
}

public class Root
{
    public List<Datum> data { get; set; }
    public bool truncated { get; set; }
    public bool skipped { get; set; }
    public string serial { get; set; }
    public string name { get; set; }
    public string type { get; set; }
}

然后获取值：

foreach (var item in myDeserializedClass)
{
    foreach (var data in item.data)
    { 
        Console.WriteLine($"{data.lat} {data.lng} {data.fixTime}");
    }
}

或者，您可以混合使用这两种方法并使用 ToObject<T>():

List<Datum> items = JArray.Parse(json)[0]["data"].ToObject<List<Datum>>();

将嵌套 Json 反序列化为列表

Deserialize nested Json into a list

c#

json.net