.net实体类与json相互转换_实用技巧_

 using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks; using System.Runtime.Serialization.Json; using System.IO; namespace JsonTest { class JsonHelp { public JsonHelp() { // // TODO: Add constructor logic here // } /// 
 /// 把对象序列化 JSON 字符串 /// 
 /// 对象类型 /// 对象实体 /// JSON字符串 public static string GetJson(T obj) { //记住 添加引用 System.ServiceModel.Web /** * 如果不添加上面的引用,System.Runtime.Serialization.Json; Json是出不来的哦 * */ DataContractJsonSerializer json = new DataContractJsonSerializer(typeof(T)); using (MemoryStream ms = new MemoryStream()) { json.WriteObject(ms, obj); string szJson = Encoding.UTF8.GetString(ms.ToArray()); return szJson; } } /// 
 /// 把JSON字符串还原为对象 /// 
 /// 对象类型 /// JSON字符串 /// 对象实体 public static T ParseFormJson(string szJson) { T obj = Activator.CreateInstance(); using (MemoryStream ms = new MemoryStream (Encoding.UTF8.GetBytes(szJson))) { DataContractJsonSerializer dcj = new DataContractJsonSerializer(typeof(T)); return (T)dcj.ReadObject(ms); } } } } 

 using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks; namespace JsonTest { public class testData { public testData() { } public int Id { get; set; } public string Name { get; set; } public string Sex { get; set; } } } 

 using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks; namespace JsonTest { class Program { static void Main(string[] args) { //实体类转json testData t1 = new testData(); t1.Id = 1; t1.Name = "001姓名"; t1.Sex = "男"; testData t2 = new testData(); t2.Id = 2; t2.Name = "002姓名"; t2.Sex = "男"; testData t3 = new testData(); t3.Id = 3; t3.Name = "003姓名"; t3.Sex = "男"; List tlist = new List(); tlist.Add(t1); tlist.Add(t2); tlist.Add(t3); Console.WriteLine(JsonHelp.GetJson>(tlist)); // Console.ReadKey(); //json转实体类 List tl = JsonHelp.ParseFormJson >(JsonHelp.GetJson>(tlist)); Console.WriteLine(tl.Count); Console.WriteLine(tl[0].Name); Console.ReadKey(); } } }