c# - 使用 Json.Net 反序列化时出现错误 "Cannot deserialize the current JSON array"

Question

我有一个字符串:

[
  {
    "key": "key1",
    "value": "{'Time':'15:18:42','Data':'15:18:42'}",
    "duration": 5
  },
  {
    "key": "key1",
    "value": "{'Time':'15:18:42','Data':'15:18:42'}",
    "duration": 5
  }
]

我的模型类:

public class CPacket
{
    public string key { get; set; }
    public string value { get; set; }
    public int duration { get; set; }
}

我使用 Json.Net，我想将下面的字符串转换为 Json 对象。

CPacket c = JsonConvert.DeserializeObject<CPacket>(strPostData);

但是报错:

An exception of type 'Newtonsoft.Json.JsonSerializationException' occurred in Newtonsoft.Json.dll but was not handled in user code
Additional information: Cannot deserialize the current JSON array (e.g. [1,2,3]) into type 'QuoteAPI.Models.CPacket' because the type requires a JSON object (e.g. {"name":"value"}) to deserialize correctly.

Answer 1

您的 JSON 表示一组 CPacket 对象，而不仅仅是单个对象。您需要反序列化为一个列表。

List<CPacket> list = JsonConvert.DeserializeObject<List<CPacket>>(strPostData);