C# JSON字符串序列化与反序列化

C#将对象序列化成JSON字符串

public string GetJsonString()  
{  
    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;  
    return new JavaScriptSerializer().Serialize(productlist));  
}  
 
public class Product  
{  
    public string Name { get; set; }  
    public double Price { get; set; }  
}  
 
public class ProductList  
{  
    public List<Product> GetProducts { get; set; }  
} 

这里主要是使用JavaScriptSerializer来实现序列化操作,这样我们就可以把对象转换成Json格式的字符串,生成的结果如下:

{"GetProducts":[{"Name":"苹果","Price":5.5},{"Name":"橘子","Price":2.5},{"Name":"柿子","Price":16}]} 

如何将Json字符串转换成对象使用呢?

在实际开发中,经常有可能遇到用JS传递一个Json格式的字符串到后台使用,如果能自动将字符串转换成想要的对象,那进行遍历或其他操作时,就方便多了。那具体是如何实现的呢?

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);  
    }  
}  
 
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);  
 
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; }  
} 

在上面的例子中,可以很方便的将Json字符串转换成List对象

posted @ 2016-01-23 09:39  dekevin  阅读(317)  评论(0编辑  收藏  举报