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  • C#将JSON字符串对象序列化与反序列化

    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,操作的时候就方便多了~

    JavaScriptSerializer jss = new JavaScriptSerializer();
    jss.Deserialize<T>

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  • 原文地址:https://www.cnblogs.com/xdot/p/5044684.html
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