C#中的序列化和反序列化

序列化是指将对象转换为可存储或传输的格式，例如将对象转换为JSON字符串或字节流。反序列化则是将存储或传输的数据转换回对象的过程。这两个过程在数据持久化、数据交换以及与外部系统的通信中非常常见

把对象转换成josn字符串格式    这个过程就是序列化
josn字符串: 就是拥有固定格式的字符串
{ "name": "张三", "age": 25, "isStudent": true }

步骤:

1.在"引用"上右键

2.添加Nuget程序包

3.搜索"json"

4.点击下载"Newtonsoft.json"

5.在项目using  Newtonsoft.json

先声明两个类

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;namespace 序列反序列.Models
{[Serializable]//表示这个类可以序列化internal class User{public int Id { get; set; }public string Name { get; set; }public string Email { get; set; }public string Password { get; set; }}
}using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;namespace 序列反序列.Models
{internal class Product{public int Id { get; set; }public string Name { get; set; }public string Description { get; set; }public float Price { get; set; }public User SaleUser { get; set; }}
}

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;
using 序列反序列.Models;
using Newtonsoft.Json;namespace 序列反序列
{/// <summary>/// MainWindow.xaml 的交互逻辑/// </summary>public partial class MainWindow : Window{public MainWindow(){InitializeComponent();}string s=string.Empty;private void button1_Click(object sender, RoutedEventArgs e){Console.ForegroundColor = ConsoleColor.Red;User user = new User() { Id = 1 , Name = "小张" ,Email="163.com",Password="123566"};s=JsonConvert.SerializeObject(user);Console.WriteLine(s);Console.WriteLine("这上面是序列化的");}private void Button_Click(object sender, RoutedEventArgs e){if (!string.IsNullOrWhiteSpace(s)){User newUser = JsonConvert.DeserializeObject<User>(s);Console.WriteLine(newUser.Name);}else{Console.WriteLine("先序列化");}}}
}

序列化

 Console.ForegroundColor = ConsoleColor.Red;User user = new User() { Id = 1 , Name = "小张" ,Email="163.com",Password="123566"};s=JsonConvert.SerializeObject(user);Console.WriteLine(s);Console.WriteLine("这上面是序列化的");

反序列化

  if (!string.IsNullOrWhiteSpace(s)){User newUser = JsonConvert.DeserializeObject<User>(s);Console.WriteLine(newUser.Name);}else{Console.WriteLine("先序列化");}

效果

对象嵌套序列化

Product product = new Product()
{Id = 1,Name = "小明",Description = "小明有一个狗",Price = 1000.123f,SaleUser = new User { Name = "小兰", Id = 2 }
};string s = JsonConvert.SerializeObject(product, Formatting.Indented);
Console.WriteLine(s);
Product product1 = JsonConvert.DeserializeObject<Product>(s);
Console.WriteLine(product1.Name);
Console.WriteLine(product1.SaleUser.Name);

数组序列化

  User user1 = new User(){Id = 1,Name = "小丑",Email = "[e-mail]",Password = "1452"};User user2 = new User() { Id = 2, Name = "效率", Email = "[e-mail]", Password = "246810" };object[] objs = { user1, user2, true, "不知道" };s2 = JsonConvert.SerializeObject(objs, Formatting.Indented);Console.WriteLine(s2);

数组反序列化

 if (!string.IsNullOrWhiteSpace(s2)){object[] objs = JsonConvert.DeserializeObject<object[]>(s2);Console.WriteLine(objs[1]);//字符串User u = JsonConvert.DeserializeObject<User>(objs[1].ToString());Console.WriteLine(u.Name);}

效果