C#如何实现JSON与对象之间互相转换功能示例

本文实例讲述了C#实现JSON和对象之间互相转换功能。分享给大家供大家参考，具体如下：

1.首先是声明用户信息对象，DataContract修饰类，表示可以被解析成JSON，Datamember修饰属性，Order表示 解析的顺序，另外Lover是数组列表，表示女朋友个数

Address 表示送货地址，DailyRecord 表示日常记录

using System;
    using System.Collections.Generic;
    using System.Linq;
    using System.Text;
    using System.Runtime.Serialization;
namespace Functiontest.Model{
  [DataContract]  public class UserInfo  {
    [DataMember(Order =0)]    public string UserName {
     get;
     set;
 }
    [DataMember(Order = 1)]    public int Age {
     get;
     set;
 }
    [DataMember(Order = 2)]    public int Gender {
     get;
     set;
 }
        [DataMember(Order =3)]    public Liststring>
 Lover {
     get;
     set;
 }
    [DataMember(Order = 4)]    public ContactAddress Address {
     get;
     set;
 }
        [DataMember(Order = 5)]    public Dictionarystring, string>
 DailyRecord {
          get;
     set;
    }
  }
  [DataContract]  public class ContactAddress  {
    [DataMember(Order =0)]    public string PRovince {
     get;
     set;
 }
    [DataMember(Order = 1)]    public string CITy {
     get;
     set;
 }
    [DataMember(Order = 2)]    public string Country {
     get;
     set;
 }
    [DataMember(Order = 3)]    public string Details {
     get;
     set;
 }
  }
}
    

2.JSON帮助类 核心代码

/// summary>
    /// Json转换成对象/// /summary>
    /// tyPEparam name="T">
    /typeparam>
    /// param name="jsonText">
    /param>
    /// returns>
    /returns>
    public static T JsonToObjectT>
(string jsonText){
      DataContractJsonSerializer s = new DataContractJsonSerializer(typeof(T));
      MemoryStream ms = new MemoryStream(Encoding.UTF8.GetBytes(jsonText));
      T obj = (T)s.ReadObject(ms);
      ms.Dispose();
      return obj;
}
    /// summary>
    /// 对象转换成JSON/// /summary>
    /// typeparam name="T">
    /typeparam>
    /// param name="obj">
    /param>
    /// returns>
    /returns>
    public static string ObjectToJSONT>
(T obj){
      DataContractJsonSerializer serializer = new DataContractJsonSerializer(typeof(T));
      string result = string.Empty;
  using (MemoryStream ms = new MemoryStream())  {
        serializer.WriteObject(ms, obj);
        ms.Position = 0;
    using (StreamReader read = new StreamReader(ms))    {
          result = read.ReadToEnd();
    }
  }
      return result;
}
    

3.调用

//1.对象-->
JSONUserInfo info = new UserInfo{
        Age = 10,    Gender = 1,    UserName = "刘德华",    Lover = new Liststring>
 {
 "美女1", "美女2", "美女3" }
,    Address = new ContactAddress    {
      Province = "湖南省",      City = "长沙市",      Country = "望城县",      Details = "某旮旯快递找不到的地方"    }
    ,    DailyRecord = new Dictionarystring, string>
 {
 {
 "星期一", "吃饭" }
, {
 "星期二", "洗衣服" }
, {
 "星期三", "好事情" }
 }
}
    ;
    string JSON = ObjectToJSONUserInfo>
    (info);
    

4.反序列化后的结果

代码如下:

{
"UserName":"刘德华","Age":10,"Gender":1,"Lover":["美女1","美女2","美女3"],"Address":{
"Province":"湖南省","City":"长沙市","Country":"望城县","Details":"某旮旯快递找不到的地方"}
,"DailyRecord":[{
"Key":"星期一","Value":"吃饭"}
,{
"Key":"星期二","Value":"洗衣服"}
,{
"Key":"星期三","Value":"好事情"}
]}
    

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