C#中JSON和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 List<string> Lover { get; set; }[DataMember(Order = 4)]public ContactAddress Address { get; set; }[DataMember(Order = 5)]public Dictionary<string, 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 JsonToObject<T>(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 ObjectToJSON<T>(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-->JSON
UserInfo info = new UserInfo
{Age = 10,Gender = 1,UserName = "刘德华",Lover = new List<string> { "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 Dictionary<string, string> { { "星期一", "吃饭" }, { "星期二", "洗衣服" }, { "星期三", "好事情" } }
};
string json = ObjectToJSON<UserInfo>(info);

4.反序列化后的结果

复制代码 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"}]}