Question

我正在尝试反序列化此JSON，但我一直在收到错误。有人可以帮帮我吗？我在哪里弄错了？

JSON:

{
    "totalItems": 63,
    "items": [
    {
        "id": 100039812,
        "group": {
            "code": "DD",
            "description": "Delivery Documents"
        },
        "type": {
            "code": "READ",
            "description": "Logs"
        },
        "reference": "ARLDR",
        "date": "2015-03-24T00:00:00",
        "description": "ALogs",
        "notes": "",
        "lastUpdateDate": "2015-03-24T14:06:42.063",
        "location": "BOX A001",
        "metadata": {}
    },
    {
        "id": 100039813,
        "group": {
            "code": "DD",
            "description": "Delivery Documents"
        },
        "type": {
            "code": "BL",
            "description": "Logbooks"
        },
        "reference": "BALB",
        "date": "2015-03-24T00:00:00",
        "description": "Logbooks",
        "notes": "",
        "lastUpdateDate": "2015-03-24T14:07:42.44",
        "location": "BOX A001",
        "metadata": {}
        }
    ]
}

public class Documents
{
    public int totalItems  { get; set; }
    public List<doc_items> items { get; set; }
}

public class doc_items
{
    public int id { get; set; }
    public List<group_items> group { get; set; }
    public List<type_items> type { get; set; }
    public string reference { get; set; }
    public string date { get; set; }
    public string description { get; set; }
    public string notes { get; set; }
    public string lastUpdateDate { get; set; }
    public string location { get; set; }
    public List<metadata_list> metadata { get; set; }
}

public class group_items
{
    public string code { get; set; }
    public string description { get; set; }
}

public class type_items
{
    public string code { get; set; }
    public string description { get; set; }
}

public class metadata_list
{

}

然后我称之为：

Documents myDocuments = JsonConvert.DeserializeObject<Documents>(responsetext.ToString());

并收到以下错误：

错误：Newtonsoft.Json.JsonSerializationException：无法将当前JSON对象（例如{＆＃34; name＆＃34;：＆＃34; value＆＃34;}）反序列化为类型System.Collections.Generic.List`1 [AerData.Ranorex.Web.Records.API_Documents +文献]＆＃39;因为类型需要JSON数组（例如[...
）

Answer 1

相反＆＃39; group＆＃39;，＆＃39; type＆＃39;和元数据＆＃39;不是数组，所以将您的类修改为：

public class doc_items
{
    public int id { get; set; }
    public group_items group { get; set; }
    public type_items type { get; set; }
    public string reference { get; set; }
    public string date { get; set; }
    public string description { get; set; }
    public string notes { get; set; }
    public string lastUpdateDate { get; set; }
    public string location { get; set; }
    public metadata_list metadata { get; set; }
}

Answer 2

根据Documents类的定义，group的{{1}}属性必须是数组。在你给定的JSON中它是一个对象。同样适用于doc_items属性

Answer 3

我建议使用这样的转换器：http://json2csharp.com/#

试试这个：

class Program
{
    static void Main(string[] args)
    {
        var sr = new StreamReader("json.json");
        var jsonText = sr.ReadToEnd();
        Documents myDocuments = JsonConvert.DeserializeObject<Documents>(jsonText);
    }
}

public class group_items
{
    public string code { get; set; }
    public string description { get; set; }
}

public class type_items
{
    public string code { get; set; }
    public string description { get; set; }
}

public class metadata_list
{
}

public class doc_items
{
    public int id { get; set; }
    public group_items GroupItems { get; set; }
    public type_items TypeItems { get; set; }
    public string reference { get; set; }
    public string date { get; set; }
    public string description { get; set; }
    public string notes { get; set; }
    public string lastUpdateDate { get; set; }
    public string location { get; set; }
    public metadata_list MetadataList { get; set; }
}

public class Documents
{
    public int totalItems { get; set; }
    public List<doc_items> items { get; set; }
}

您的数据文件json.json

{
  "totalItems": 63,
  "items": [
    {
      "id": 100039812,
      "group": {
        "code": "DD",
        "description": "Delivery Documents"
      },
      "type": {
        "code": "READ",
        "description": "Logs"
      },
      "reference": "ARLDR",
      "date": "2015-03-24T00:00:00",
      "description": "ALogs",
  "notes": "",
  "lastUpdateDate": "2015-03-24T14:06:42.063",
  "location": "BOX A001",
  "metadata": { }
},
{
  "id": 100039813,
  "group": {
    "code": "DD",
    "description": "Delivery Documents"
  },
  "type": {
    "code": "BL",
    "description": "Logbooks"
  },
  "reference": "BALB",
  "date": "2015-03-24T00:00:00",
  "description": "Logbooks",
  "notes": "",
  "lastUpdateDate": "2015-03-24T14:07:42.44",
  "location": "BOX A001",
  "metadata": { }
    }
  ]
}

如何使用JsonConvert.DeserializeObject反序列化此JSON

3 个答案: