c# - 在 JSON.NET 中解析 JSON 数组

Question

我在 REST API 响应中有 JSON 对象:

{
    Result:
    [
        {
            "id": 1,
            "id_endpoint": 1,
            "name": "Endpoint 1",
            "description": "Endpoint 1",
            "unit": "mmol",
            "minthreshold": 30,
            "maxthreshold": -15,
            "id_device": 4,
            "value": 7,
            "time": "2016-12-24T21:20:19.000Z",
            "address": "Endpoint 1",
            "id_user": 1
        }, {
            "id": 2,
            "id_endpoint": 1,
            "name": "Endpoint 1",
            "description": "Endpoint 1",
            "unit": "mmol",
            "minthreshold": 30,
            "maxthreshold": -15,
            "id_device": 4,
            "value": 6,
            "time": "2016-12-24T21:20:16.000Z",
            "address": "Endpoint 1",
            "id_user": 1
        }, {
            "id": 3,
            "id_endpoint": 1,
            "name": "Endpoint 1",
            "description": "Endpoint 1",
            "unit": "mmol",
            "minthreshold": 30,
            "maxthreshold": -15,
            "id_device": 4,
            "value": 8,
            "time": "2016-12-24T21:18:38.000Z",
            "address": "Endpoint 1",
            "id_user": 1
        }
    ],
    StatusCode: 200
}

如果出错，他们将得到:

{
    Result: null,
    StatusCode: 404
}

我正在使用 JSON.NET 并且我已经上课 DeviceInfo.cs

public class DeviceInfo
{
    public int DeviceID {get;set;}
    public int EndpointID {get;set;}
    public string DeviceName {get;set;}
    public double MinThreshold {get;set;}
    public double MaxThreshold {get;set;}
    public double CurrentValue {get;set;}
    public DateTime ValueTime {get;set;}
    public string EndpointAddress {get;set;}
    public int IDUser {get;set;}
}

我的问题是如何解析 JSON 对象中的结果数组并将其存储在 DeviceInfo 类中？

Answer 1

您需要属性帮助 Newtonsoft.Json 将源映射到您的类。

public class DeviceInfo
{
    [JsonProperty("id")]
    public int DeviceID { get; set; }
    [JsonProperty("id_endpoint")]
    public int EndpointID { get; set; }
    [JsonProperty("name")]
    public string DeviceName { get; set; }
    [JsonProperty("minthreshold")]
    public double MinThreshold { get; set; }
    [JsonProperty("maxthreshold")]
    public double MaxThreshold { get; set; }
    [JsonProperty("value")]
    public double CurrentValue { get; set; }
    [JsonProperty("time")]
    public DateTime ValueTime { get; set; }
    [JsonProperty("address")]
    public string EndpointAddress { get; set; }
    [JsonProperty("id_user")]
    public int IDUser { get; set; }
}

还有一个包装了你的 json 的外部类。

public class RootObject
{
    public List<DeviceInfo> Result { get; set; }
    public int StatusCode { get; set; }
}

最后，您可以使用 JsonConvert 反序列化您的 json。

var result = JsonConvert.DeserializeObject<RootObject>(json);