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Json Net 简单的文件读取和写入

云卷云舒xj 2022-12-24 阅读 168

Json Net 简单的文件读取和写入_json

▲ 读写的文件

XiaoMing.json:

{"Name":"小明","Sex":"男","Age":12}

JsonWriteTest.json:

{
"StartX": 1.23,
"StartY": 1.24,
"EndX": 10,
"EndY": "YY",
"Favorites": [
"吃饭",
"睡觉"
],
"Remark": null
}

引入 ​​Newtonsoft.Json.dll​​。

using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Newtonsoft.Json;
using Newtonsoft.Json.Linq;

namespace ConsoleApp1
{
class Program
{
static void Main(string[] args)
{
ReadJsonFile();
WriteJson();

Console.ReadKey();
}

private static void ReadJsonFile()
{
string jFileName = "./XiaoMing.json";
StreamReader sr = File.OpenText(jFileName);
JsonTextReader jr = new JsonTextReader(sr);
JObject jObj = JToken.ReadFrom(jr) as JObject;
Console.WriteLine($"Name:{jObj["Name"].Value<string>()} \nSex:{jObj.Value<string>("Sex")} \nAge:{jObj["Age"].Value<int>()}");
}

private static void WriteJson()
{
string fileName = "./JsonWriteTest.json";

JObject jsonObj1 = new JObject();
jsonObj1["StartX"] = 1.23;
jsonObj1["StartY"] = 1.24;
jsonObj1["EndX"] = 10;
jsonObj1["EndY"] = "YY";

// 创建数组
JArray array = new JArray();
array.Add(new JValue("吃饭"));
array.Add(new JValue("睡觉"));
jsonObj1.Add("Favorites", array);
jsonObj1.Add("Remark", null);

//Console.WriteLine(array.ToString());

string convertString = Convert.ToString(jsonObj1);//将json装换为string
File.WriteAllText(fileName, convertString, System.Text.Encoding.UTF8);//将内容写进jon文件中
}
}
}


参考:

  • ​​https://www.jb51.net/article/204058.htm​​ // C# Newtonsoft.Json 解析多嵌套json 进行反序列化的实例
  • ​​https://www.jb51.net/article/256530.htm​​ // c#解析jobject的数据结构



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