Json----简单介绍

Json

先分享一个网站http://www.bejson.com/,这个是用来检测Json文件的错误的,Json文件一般不好查找错误.

看懂Json只需要四句话:

对象表示为键值对

数据由逗号分隔

花括号保存对象

方括号保存数组

这就是Json文件.不在过多介绍,重点不在这里

基础:Json到对象和对象到Json

需要用到的API:

JsonMapper.ToJson();

JsonMapper.ToObject();

引用命名空间Using LitJson;

代码:

 using System.Collections;
 using System.Collections.Generic;
 using UnityEngine;
 using LitJson;
 public class JsonTest : MonoBehaviour {
     void Start()
     {
 //对象到Json
         MyIphone myPhone = new MyIphone
         {
             appNum = ,
             phoneState = true,
             appList = new List<string>() { "抖音", "BiliBili", "喜马拉雅听" }
         };
         string jsonIpone = JsonMapper.ToJson(myPhone);
       Debug.Log(jsonIpone);

 //Json转到对象
         string myIphoneJson = "{'appNum':25,'phoneState':false,'appList':['WeChat','Sina','QQ']}";
         MyIphone myIPhone = JsonMapper.ToObject<MyIphone>(myIphoneJson);
         Debug.Log("手机应用数量:"+myIPhone.appNum+"-手机开机状态"+myIPhone.phoneState);
         for (int i = ; i < myIPhone.appList.Count; i++)
         {
             Debug.Log(myIPhone.appList[i]);
         }
     }
 }
 public class MyIphone
 {
     public int appNum;
     public bool phoneState;
     public List<string> appList;
 }

进阶使用的:

代码二:

 using System.Collections;
 using System.Collections.Generic;
 using System.IO;
 using System.Text;
 using LitJson;
 using UnityEngine;
 public class DataNode// 该class用于json的时候不能有构造函数
 {
     public string CopyName;
     public string CopyPosition;
     public string CopyRotation;
 }
 public class DataCenter
 {
     public List<DataNode> List;

    public DataCenter()
     {
         List =new List<DataNode>();
     }
 }
 public class JsonConvert : MonoBehaviour {
     private string _txtPath;
     private string _jsonPath;
     void Start ()
     {
         _jsonPath = Application.streamingAssetsPath + "/CopyInfo.json";
         _txtPath = Application.streamingAssetsPath + "/CopyInfo.txt";
        // Json的解析是很快的 网络
         ReadTextToJson();
         ReadJsonFromJsonPath();
     }
     void ReadJsonFromJsonPath()
     {
       string jsondata =  File.ReadAllText(_jsonPath);
         List<DataNode> node = JsonMapper.ToObject<List<DataNode>>(jsondata);
         Debug.LogError(node.Count);
     }
     void ReadTextToJson()
     {
         DataCenter dc = new DataCenter();
         using (StreamReader reader = new StreamReader(_txtPath,Encoding.UTF8))
         {
             string tmpStr = string.Empty;
             while ( !string.IsNullOrEmpty(tmpStr = reader.ReadLine()))
             {
                 string[] infos = tmpStr.Split('_');
                 DataNode _node = new DataNode();
                 _node = infos();
                 dc.List.Add(_node);
             }
         }
         //数据读取完毕 开始写入json 传递的List<>
         string jsonData = JsonMapper.ToJson(dc.List);
         File.WriteAllText(_jsonPath,jsonData);
     }
 }

代码三:

 using System.Collections;
 using System.Collections.Generic;
 using System.IO;
 using System.Text;
 using UnityEngine;
 using  Excel;
 using OfficeOpenXml;
 using Excel.Core;
 using  System.Data;
 using OfficeOpenXml.Style;
 using UnityEditor;
 using  LitJson;
 class CopyInfo  //CopyInfo的构造
 {
     public string     CopyName;
     public Vector3 CopyPosition;
     public Quaternion CopyRotation;
     public CopyInfo(string name, Vector3 postion, Vector3 rotation)
     {
         CopyName = name;
         CopyPosition = postion;
        CopyRotation = Quaternion.Euler(rotation);
     }
 }
 class JsonNode//JsonNode的构造
 {
     public string StrName;
     public string StrPosition;
     public string StrRotation;
     public JsonNode(string name,string pos, string rot)
     {
         StrName = name;
         StrPosition = pos;
         StrRotation = rot;
     }
 }
 class MyJsonData  //MyJsonData的构造
 {
     public List<JsonNode> JsonDatalist;

     public MyJsonData()
     {
         JsonDatalist = new List<JsonNode>();
     }
 }
 public class CreateManager : MonoBehaviour
 {
     private List<GameObject> _copyList;
     private List<CopyInfo>   _copyInfoList;
     private MyJsonData _jsonData;
     private string _excelPath;
     private string _path;
     //1. 读文件
     //2. 解析文件信息
     //3. 实例化
         //4. 实例化6个
     //4.1 在3s中销毁一个并且添加一个
     #region  读取存储在unity的streamingAssets路径中的json
     void ReadJsonByJsonPath()
     {
         string path = Application.streamingAssetsPath + "/CopyInfo.json";//路径
         string readInfo =File.ReadAllText(path);//文件读取过程
         Debug.LogWarning(readInfo);

         //类型是JsonNode
         List<JsonNode> JsonDatalist = new List<JsonNode>();//因为没有new对象!!!
         JsonDatalist = JsonMapper.ToObject<List<JsonNode>>(readInfo);//重要代码
         Debug.LogError(JsonDatalist.Count);
     }
   #endregion
     void Start()
     {
         _path = Application.streamingAssetsPath + "/CopyInfo.txt";
         _excelPath = Application.streamingAssetsPath + "/CopyInfo.xlsx";
         _copyInfoList = new List<CopyInfo>();
         _copyList = new List<GameObject>();
         _jsonData = new MyJsonData();
         WriteJsonByList();
         ReadJsonByJsonPath();
     }
     #region
     private void WriteJsonByList( )
     {
         string jsonPath = Application.streamingAssetsPath
                           + "/CopyInfo.json";
         ////将一个list信息转换为json格式
         ////定义一个class 这个class是什么不重要  必须包含一个列表
          _jsonData = new MyJsonData();
         using (StreamReader reader  = new StreamReader(_path,Encoding.UTF8))
         {
             string tmp = string.Empty;
             while ( !  string.IsNullOrEmpty(tmp = reader.ReadLine()))
             {
                 string[] infos = tmp.Split('_');
                 _jsonData.JsonDatalist.Add(new JsonNode(infos[], infos[], infos[]));
             }
         }
         //jsondata  数据填充完成
         string writeData = JsonMapper.ToJson(_jsonData);//
         File.WriteAllText(jsonPath,writeData);
     }
     #endregion
     private void WriteExcel(string path, List<CopyInfo> list)
     {
         FileInfo excelInfo = new FileInfo(path);
         if (excelInfo.Exists)
         {
             excelInfo.Delete();
             excelInfo = new FileInfo(path);
         }
         //开始shiyong Excel
         using (ExcelPackage package = new ExcelPackage(excelInfo))
         {
             ExcelWorksheet sheet = package.Workbook.Worksheets.Add("TestInfo"); // 添加了一个工作表
             sheet.Cells[, ].Value = "CopyName";
             sheet.Cells[, ].Value = "CopyPosition";
             sheet.Cells[, ].Value = "CopyRotation";
             for (int i = ; i < _copyInfoList.Count; i++)
             {
                 sheet.Cells[ + i,  ].Value = _copyInfoList[i].CopyName;
                 sheet.Cells[ + i,  ].Value = _copyInfoList[i].CopyPosition;
                 sheet.Cells[ + i,  ].Value = _copyInfoList[i].CopyRotation;
             }
             sheet.Cells.Style.HorizontalAlignment = ExcelHorizontalAlignment.Center;
             sheet.Cells.Style.VerticalAlignment = ExcelVerticalAlignment.Center;
             sheet.Cells.Style.Font.Bold = true;
             sheet.Cells.Style.Font.Name = "宋体";
             sheet.Cells.Style.Font.Size = ;
             sheet.Cells.AutoFitColumns(, );
             package.Save();
         }
         AssetDatabase.Refresh();
     }
 }