如何在项目中使用 Newtonsoft.Json.dll?
最编程
2024-08-10 16:13:53
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在日常编程中经常会使用到Json来进行数据的交互,好在.Net平台下有很多开源的Json库,使得我们能够比较轻松快速的处理各种复杂的Json。
一、类库说明
Newtonsoft.Json,是.Net中开源的Json序列化和反序列化工具,官方地址:http://www.newtonsoft.com/json。
功能比较多,效率比较高。比较常用的功能除了序列化发序列化之外,还有 Linq To Json、Json Path、 XML support等
二、安装配置
2.1 通过NuGet程序包直接配置
在对应项目的引用选项上右键,在弹出菜单中选择”管理NuGet程序包”,在搜索框中搜索json,找到Newtonsoft.Json, 点击安装。
2.2 直接引用dll
直接在项目中引用Newtonsoft.Json.dll即可
三、应用实例
- 1.定义类:
- 2.序列化,反序列化 实体对象,实体集合,匿名对象
- 3.控制字符串的序列化
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using Newtonsoft.Json;
namespace Ky_NewtonTest
{
public partial class Form1 : Form
{
/// <summary>
/// 学生信息实体
/// </summary>
public class Student
{
public int ID { get; set; }
public string Name { get; set; }
public Class Class { get; set; }
}
/// <summary>
/// 学生班级实体
/// </summary>
public class Class
{
public int ID { get; set; }
public string Name { get; set; }
}
public Form1()
{
InitializeComponent();
}
private void button1_Click(object sender, EventArgs e)
{
Student stu = new Student();
stu.ID = 1;
stu.Name = "张三";
stu.Class = new Class() { ID = 0121, Name = "CS0121" };
//使用方法1
//实体序列化、反序列化
//结果:{"ID":1,"Name":"张三","Class":{"ID":121,"Name":"CS0121"}}
string json1 = JsonConvert.SerializeObject(stu);
textBox1.Text = json1;
Student stu2 = JsonConvert.DeserializeObject<Student>(json1);
textBox1.Text = textBox1.Text + "\r \n" + stu2.Name + "---" + stu2.Class.Name;
//实体集合,序列化和反序列化
List<Student> stuList = new List<Student>() { stu, stu2 };
string json2 = JsonConvert.SerializeObject(stuList);
textBox1.Text = textBox1.Text + " \r \n \r \n" + json2;
List<Student> stuList2 = JsonConvert.DeserializeObject<List<Student>>(json2);
foreach (var item in stuList2)
{
textBox1.Text = textBox1.Text + "\r \n" + item.Name + "---" + item.Class.Name;
}
}
private void button2_Click(object sender, EventArgs e)
{
//匿名对象的解析,
//匿名独享的类型 obj.GetType().Name: "<>f__AnonymousType0`2"
var obj = new { ID = 2, Name = "李四" };
string json3 = JsonConvert.SerializeObject(obj);
textBox1.Text = json3;
object obj2 = JsonConvert.DeserializeAnonymousType(json3, obj);
//Console.WriteLine(obj2.GetType().GetProperty("ID").GetValue(obj2));
textBox1.Text = textBox1.Text + "\r \n" + obj2.GetType().GetProperty("ID").GetValue(obj2).ToString();
object obj3 = JsonConvert.DeserializeAnonymousType(json3, new { ID = default(int), Name = default(string) });
//Console.WriteLine(obj3.GetType().GetProperty("ID").GetValue(obj3));
textBox1.Text = textBox1.Text + "\r \n" + obj3.GetType().GetProperty("ID").GetValue(obj3).ToString();
//匿名对象解析,可以传入现有类型,进行转换
Student stu3 = new Student();
stu3 = JsonConvert.DeserializeAnonymousType(json3, new Student());
//Console.WriteLine(stu3.Name);
textBox1.Text = textBox1.Text + "\r \n" + stu3.Name;
}
private void button3_Click(object sender, EventArgs e)
{
JsonSerializerSettings settings = new JsonSerializerSettings();
settings.DateFormatString = "yyyy-MM-dd";
//string str = JsonConvert.SerializeObject(_Context.students.First(), settings);
//Console.WriteLine(str);
}
}
}
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using Newtonsoft.Json;
namespace Ky_NewtonTest
{
public partial class Form1 : Form
{
/// <summary>
/// 学生信息实体
/// </summary>
public class Student
{
public int ID { get; set; }
public string Name { get; set; }
public Class Class { get; set; }
}
/// <summary>
/// 学生班级实体
/// </summary>
public class Class
{
public int ID { get; set; }
public string Name { get; set; }
}
public Form1()
{
InitializeComponent();
}
private void button1_Click(object sender, EventArgs e)
{
Student stu = new Student();
stu.ID = 1;
stu.Name = "张三";
stu.Class = new Class() { ID = 0121, Name = "CS0121" };
//使用方法1
//实体序列化、反序列化
//结果:{"ID":1,"Name":"张三","Class":{"ID":121,"Name":"CS0121"}}
string json1 = JsonConvert.SerializeObject(stu);
textBox1.Text = json1;
Student stu2 = JsonConvert.DeserializeObject<Student>(json1);
textBox1.Text = textBox1.Text + "\r \n" + stu2.Name + "---" + stu2.Class.Name;
//实体集合,序列化和反序列化
List<Student> stuList = new List<Student>() { stu, stu2 };
string json2 = JsonConvert.SerializeObject(stuList);
textBox1.Text = textBox1.Text + " \r \n \r \n" + json2;
List<Student> stuList2 = JsonConvert.DeserializeObject<List<Student>>(json2);
foreach (var item in stuList2)
{
textBox1.Text = textBox1.Text + "\r \n" + item.Name + "---" + item.Class.Name;
}
}
private void button2_Click(object sender, EventArgs e)
{
//匿名对象的解析,
//匿名独享的类型 obj.GetType().Name: "<>f__AnonymousType0`2"
var obj = new { ID = 2, Name = "李四" };
string json3 = JsonConvert.SerializeObject(obj);
textBox1.Text = json3;
object obj2 = JsonConvert.DeserializeAnonymousType(json3, obj);
//Console.WriteLine(obj2.GetType().GetProperty("ID").GetValue(obj2));
textBox1.Text = textBox1.Text + "\r \n" + obj2.GetType().GetProperty("ID").GetValue(obj2).ToString();
object obj3 = JsonConvert.DeserializeAnonymousType(json3, new { ID = default(int), Name = default(string) });
//Console.WriteLine(obj3.GetType().GetProperty("ID").GetValue(obj3));
textBox1.Text = textBox1.Text + "\r \n" + obj3.GetType().GetProperty("ID").GetValue(obj3).ToString();
//匿名对象解析,可以传入现有类型,进行转换
Student stu3 = new Student();
stu3 = JsonConvert.DeserializeAnonymousType(json3, new Student());
//Console.WriteLine(stu3.Name);
textBox1.Text = textBox1.Text + "\r \n" + stu3.Name;
}
private void button3_Click(object sender, EventArgs e)
{
JsonSerializerSettings settings = new JsonSerializerSettings();
settings.DateFormatString = "yyyy-MM-dd";
//string str = JsonConvert.SerializeObject(_Context.students.First(), settings);
//Console.WriteLine(str);
}
}
}
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