TEAMModelOS/TEAMModelBI/Controllers/BITest/JsonTestController.cs

using Microsoft.AspNetCore.Http;
using Microsoft.AspNetCore.Mvc;
using Newtonsoft.Json;
using System;
using System.Collections.Generic;
using System.IO;
using System.Text;
using System.Threading.Tasks;
using TEAMModelBI.Models;

namespace TEAMModelBI.Controllers.BITest
{
    [Route("jsontest")]
    [ApiController]
    public class JsonTestController : ControllerBase
    {
        public JsonTestController() 
        {
        
        }

        /// <summary>
        /// 获取
        /// </summary>
        /// <returns></returns>
        [HttpPost("get-sysconfig")]
        public async Task<IActionResult> GetSysConfig() 
        {
            var sysCinfig = ReadJsonFileToList();
            Write(sysCinfig);
            return Ok(new { state = 200 });
        }

        /// <summary>
        /// 获取本地的json文件转成List
        /// </summary>
        /// <returns></returns>
        public static List<SysConfig> ReadJsonFileToList()
        {
            //将Json转换回列表
            var directorypath = Directory.GetCurrentDirectory();
            string strFileName = directorypath + "\\JsonFile\\SystemConfig.json";
            string jsonData = GetJsonFile(strFileName);
            Console.WriteLine(jsonData);
            //反序列化Json字符串内容为对象
            List<SysConfig> jsondata = JsonConvert.DeserializeObject<List<SysConfig>>(jsonData);
            return jsondata;

        }
        /// <summary>
        /// 获取到本地的Json文件并且解析返回对应的json字符串
        /// </summary>
        /// <param name="filepath"></param>
        /// <returns></returns>
        public static string GetJsonFile(string filepath)
        {
            string json = string.Empty;
            using (FileStream fs = new FileStream(filepath, FileMode.OpenOrCreate, System.IO.FileAccess.ReadWrite, FileShare.ReadWrite))
            {
                Encoding.RegisterProvider(CodePagesEncodingProvider.Instance);
                using (StreamReader sr = new(fs, Encoding.GetEncoding("GB2312")))
                {
                    json = sr.ReadToEnd().ToString();
                }
            }
            return json;
        }

        /// <summary>
        /// 把对象写入到json文件中
        /// </summary>
        /// <param name="obj"></param>
        /// <returns></returns>
        public static void Write(List<SysConfig> jsonData)
        {
            var directorypath = Directory.GetCurrentDirectory();
            string strFileName = directorypath + "\\JsonFile\\SystemConfig.json";
            string ListJson = JsonConvert.SerializeObject(jsonData);

            System.IO.File.WriteAllText(strFileName, ListJson);  //有缩进

            ////无缩进
            //Console.WriteLine(ListJson);

            //writeJsonFile(strFileName, ListJson);

            ////将序列化的json字符串内容写入Json文件，并且保存
            //void writeJsonFile(string path, string jsonConents)
            //{
            //    using (FileStream fs = new FileStream(path, FileMode.OpenOrCreate, System.IO.FileAccess.ReadWrite, FileShare.ReadWrite))
            //    {
            //        //如果json文件中有中文数据，可能会出现乱码的现象，那么需要加上如下代码
            //        Encoding.RegisterProvider(CodePagesEncodingProvider.Instance);
            //        using (StreamWriter sw = new StreamWriter(fs, Encoding.GetEncoding("GB2312")))
            //        {
            //            sw.WriteLine(jsonConents);
            //        }
            //    }
            //}
        }
    }
}