json序列化和反序列化(.net2.0和.net3.5)
.net2.0
markerArr="[{Name:'苹果',Price:5.5},{Name:'橘子',Price:2.5},{Name:'柿子',Price:16}]";
Oldlst = (List<MapPointData>)JavaScriptConvert.DeserializeObject(markerArr, typeof(List<MapPointData>));//所有页面数据
.net3.5
C#将Json字符串反序列化成List对象类集合
using System.IO;
using System.Web.Script.Serialization;
using System.Runtime.Serialization.Json;
public static List<T> JSONStringToList<T>(this string JsonStr)
{
JavaScriptSerializer Serializer = new JavaScriptSerializer();
List<T> objs = Serializer.Deserialize<List<T>>(JsonStr);
return objs;
}
public static T Deserialize<T>(string json)
{
T obj = Activator.CreateInstance<T>();
using (MemoryStream ms = new MemoryStream(Encoding.UTF8.GetBytes(json)))
{
DataContractJsonSerializer serializer = new DataContractJsonSerializer(obj.GetType());
return (T)serializer.ReadObject(ms);
}
}
好了，我们来测试下
string JsonStr = "[{Name:'苹果',Price:5.5},{Name:'橘子',Price:2.5},{Name:'柿子',Price:16}]";
List<Product> products = new List<Product>();
products = JSONStringToList<Product>(JsonStr);
//Response.Write(products.Count());
foreach (var item in products)
{
Response.Write(item.Name + ":" + item.Price + "<br />");
}
public class Product
{
public string Name { get; set; }
public double Price { get; set; }
}
结果：
苹果:5.5
橘子:2.5
柿子:16
C#将对象序列化成JSON字符串
using System.Web.Script.Serialization;
public void ProcessRequest(HttpContext context)
{
context.Response.ContentType = "text/plain";
List<Product> products = new List<Product>(){
new Product(){Name="苹果",Price=5.5},
new Product(){Name="橘子",Price=2.5},
new Product(){Name="干柿子",Price=16.00}
};
ProductList productlist = new ProductList();
productlist.GetProducts = products;
context.Response.Write(new JavaScriptSerializer().Serialize(productlist));
}
public bool IsReusable
{
get
{
return false;
}
}
public class Product
{
public string Name { get; set; }
public double Price { get; set; }
}
public class ProductList
{
public List<Product> GetProducts { get; set; }
}
生成的JSON结果如下：
{"GetProducts":[{"Name":"苹果","Price":5.5},{"Name":"橘子","Price":2.5},{"Name":"柿子","Price":16}]}
