C#Json总结

写C#的多少会遇到JSON格式化,以下代码初步总结怎么使用。

以下两种方式均需引用Newtonsoft.Json.dll

  一、使用JsonSerializer

class JosnUnit
    {
        public string Guid { get; set; }
        public string Index { get; set; }
        public string Title { get; set; }
        public string subTitle { get; set; }
        public string Type { get; set; }
        public string IsLeaf { get; set; }
        public string GroupName { get; set; }
        public string[] Children { get; set; }
        public string UserParam { get; set; }

    }

 

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

namespace json解析
{
    class Program
    {
        static void Main(string[] args)
        {
       
            string path = AppDomain.CurrentDomain.BaseDirectory + "\\信号源列表.txt";
            StreamReader streamReader = new StreamReader(path);
            //JsonReader reader = new JsonTextReader(streamReader);

            //while (reader.Read())
            //{
            //    Console.WriteLine(reader.Value);
            //}
            JsonSerializer serializer = new JsonSerializer();
            JosnUnit[] p1 = (JosnUnit[])serializer.Deserialize(new JsonTextReader(streamReader), typeof(JosnUnit[]));
       streamReader.Dispose();
string str = p1[1].Guid; Console.ReadKey(); } } // "Guid":"40", //"Index":0, //"Title":"北侧2排电脑3", //"subTitle":"", //"Type":"32", //"IsLeaf":true, //"GroupName":"", //"Children":[ //], //"UserParam":"2" class JosnUnit { public string Guid { get; set; } public string Index { get; set; } public string Title { get; set; } public string subTitle { get; set; } public string Type { get; set; } public string IsLeaf { get; set; } public string GroupName { get; set; } public string[] Children { get; set; } public string UserParam { get; set; } } }

二、使用JsonConvert

public class SignalModel
    {
        public string Guid { get; set; }
        public int Index { get; set; }
        public string Title { get; set; }
        public string subTitle { get; set; }
        public string Type { get; set; }
        public string GroupName { get; set; }
        public string Children { get; set; }
        public int UserParam { get; set; }

    }

 

 static void Main(string[] args)
        {
            List<SignalModel> pResult = new List<SignalModel>();
            string path = AppDomain.CurrentDomain.BaseDirectory + "\\信号源列表.txt";
            StreamReader streamReader = new StreamReader(path);
             var str=streamReader.ReadToEnd();
             streamReader.Dispose();
              str = str.Remove(str.Length - 1, 1);//删除结尾字符‘]’
                str = str.Remove(0, 1);//删除开头字符‘[’
                if (!string.IsNullOrEmpty(str) && str.Contains("subTitle"))
                {
            //去掉字符串中的‘[]’ str
= str.Replace("[", "\""); str = str.Replace("]", "\""); str = "[" + str + "]";//首尾添加上‘[]’ List<SignalModel> modelList = JsonConvert.DeserializeObject<List<SignalModel>>(str); pResult = modelList; } Console.ReadKey(); }

第二种方式发现使用JsonConvert我发现里面字符串除了开头可以有'[]',中间不能有,否则报错,而第一种方式却正常,后来才发现原来字符串中Children字段应该是集合类型,因为里面含有“[]”。而我的SignalModel类却只把他定义成string类型,当然Json化会报错。第一种中JosnUnit类里将Children定义成数组类型所以不会报错。

以上是自己水平菜的时候踩的一个坑,仅供参考。

posted @ 2017-11-13 16:37 总要有点追求吧 阅读(...) 评论(...) 编辑 收藏