JSON 到 SQL 表 [重复]

Question

我有以下从 API 获取并保存在 C# 中的对象中的 JSON 数据，并希望它插入 SQL 数据库中。

{
"6389": {
    "Offer": {
      "id": "6389",
      "name": "Swim",
      "description": "Incent",
      "require_approval": "1",
     }
  },
  "6141": {
    "Offer": {
      "id": "6141",
      "name": "Express",
      "description": "Incent",
      "require_approval": "1",
      }
  },
  "5677": {
    "Offer": {
      "id": "5677",
      "name": "Alive",
      "description": "",
      "require_approval": "1",
     }
  },
  "6669": {
    "Offer": {
      "id": "6669",
      "name": "All",
      "description": "Incent\r\",
      "require_approval": "1",
     }
  },
  "6767": {
    "Offer": {
      "id": "6767",
      "name": "App",
      "description": "",
      "require_approval": "1",
    }
  }

}

我想将上面的 JSON 保存为以下格式的 SQL 数据库表。

ID      name       description  require_approval
6389    Swim       Incent             1
6141    Express    Incent             1
5677    Alive                         1
6669    All        Incent/r/          1
6767    App                           1

提前致谢。

Answer 1

你需要在你的代码中实现这样的东西。

using Newtonsoft.Json;
using Newtonsoft.Json.Linq;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Net.Http;
using System.Net.Http.Headers;
using System.Text;
using System.Threading.Tasks;

namespace ConsoleApplication1
{
  class Program
  {
      static void Main(string[] args)
      {
        HttpClient client = new HttpClient();

        client.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));

        HttpResponseMessage response = client.GetAsync("https://ebanking.bankofmaldives.com.mv/xe/").Result;


        if (response.IsSuccessStatusCode)
        {

            string JSON = response.Content.ReadAsStringAsync().Result;
            //Deserialize to strongly typed class i.e., RootObject
            RootObject obj = JsonConvert.DeserializeObject<RootObject>(JSON);
            //Suppose your connection string is with the name XYZEntities in web.config, and your database contains the table with proper structure required. Supposing table name as XYZ, then what you need to do is:
            //loop through the list and insert into database
            using(var db = new XYZEntities){
            foreach (CurrencyList currencyItem in obj.CurrencyList)
            {
                  db.XYZ.Add(new XYZ(){
                  key = currencyItem.Key,
                  code = currencyItem.Value.Code, 
                  description = currencyItem.Value.Description,
                  buy = currencyItem.Value.Buy,
                  sell = currencyItem.Value.Sell
                  });                  
            }
            try{
                 db.SaveChanges();
               }catch(Exception e){
                //do something to handle exception here.
               }
          }

        }
    }

    **Note: Below classes are generated by utilising http://json2csharp.com/**
    **ofcourse these can be hand coded by looking at the Json response from the service**

    public class Value
    {
        public string Code { get; set; }
        public string Description { get; set; }
        public double Buy { get; set; }
        public double Sell { get; set; }
    }

    public class CurrencyList
    {
        public string Key { get; set; }
        public Value Value { get; set; }
    }

    public class RootObject
    {
        public List<CurrencyList> CurrencyList { get; set; }
    }

  }
} 

您需要创建一个表并将这些对象中的数据插入到该表中。请参考How to save json to Sql Database