ASP.NET JSON的序列化和反序列化 之 Newtonsoft.Json

我們用到的類庫為：Newtonsoft.Json，通過VS工具中NuGet程序包可以下載。

一：對象轉json-序列化

public class Student
{
    public int ID { get; set; }
    public string Name { get; set; }
    public int Age { get; set; }
}
    //第一種：單一實體類
    Student s = new Student();
    s.Age = 18;
    s.ID = 1;
    s.Name = "張三";
    string json = Newtonsoft.Json.JavaScriptConvert.SerializeObject(s);//序列化對象（對象轉json）

    //第二種：List<T>泛型 和上邊方法相同
    List<Student> list = new List<Student>();
    for (int i = 1; i < 5; i++)
    {
        Student stu = new Student();
        stu.Age = i + 12;
        stu.ID = i;
        stu.Name = "No."+i.ToString();
        list.Add(stu);
    }
    json = Newtonsoft.Json.JavaScriptConvert.SerializeObject(list);

 

二：json轉對象 - 反序列化

    //json只有一條數據
    JavaScriptObject obj = (JavaScriptObject)JavaScriptConvert.DeserializeObject(json);
    string Name = obj["Name"].ToString();//取出某一字段
    Response.Write(Name);
    //json只有一條數據
    Student ms = (Student)JavaScriptConvert.DeserializeObject(JavaScriptConvert.SerializeObject(obj), typeof(Student));//json轉對象
    Response.Write(ms.Name);

    //json有多條數據
    JavaScriptArray javascript = (JavaScriptArray)JavaScriptConvert.DeserializeObject(json);
    List<Student> slist = new List<Student>();
    for (int i = 0; i < javascript.Count; i++)
    {
        JavaScriptObject temp = (JavaScriptObject)javascript[i];
        Student model = (Student)JavaScriptConvert.DeserializeObject(JavaScriptConvert.SerializeObject(temp), typeof(Student));
        slist.Add(model);
    }

    //4.0方法
    List<Student> slist = JsonConvert.DeserializeObject<List<Student>>(json);

    Response.Write(slist[0].Name);