Unity 基础 之 Litjson 简单进行 json 创建与解析_lightjson 如何在unity中使用

Unity 基础 之 Litjson 简单进行json 创建与解析

 

目录

Unity 基础 之 Litjson 简单进行json 创建与解析

一、简单介绍

二、实现原理

三、注意事项

四、效果预览

五、实现步骤

六、关键代码

七、后记（在Unity中读取Resource 中的json数据，一次解析json 数据列表）

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一、简单介绍

Unity中的一些基础知识点。

Unity游戏开发中，进行数据封装是很常见的操作，这里简单介绍使用 litjson ，进行json数据的创建和解析。

 

二、实现原理

1、JsonMapper.ToJson将制定数据结构转换为Json字符，进行 Json 数据创建

2、JsonMapper.ToObject<T>用于将Json字符转换为指定数据结构，进行 Json 数据解析

 

三、注意事项

1、请记得导入 Litjson.dll 插件

2、注意解析的使用 结构要保有 无参构造，不然 JsonMapper.ToObject<T> 可能会报错哈

 

四、效果预览

 

五、实现步骤

1、打开Unity，新建一个空工程，导入 Litjson.dll，如下图

 

2、新建脚本，使用Litjson ，进行数据的Json 创建与解析，如下图

 

3、把脚本挂载到场景中，如下图

 

4、运行场景，控制台 Console 打印如下

 

六、关键代码

1、JsonTest

using LitJson;
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
 
 
public class Hero
{
 
    public string name;
    public int level;
    public int attack;
 
    // 这个要有，不然JsonMapper.ToObject<T>(jsonStr) 会报错
    public Hero(){}
 
    public Hero(string name, int level, int attack)
    {
        this.name = name;
        this.level = level;
        this.attack = attack;
    }
 
}
 
public class Enemy
{
 
    public string name;
    public int attack;
    public string[] devices;
 
    // 这个要有，不然JsonMapper.ToObject<T>(jsonStr) 会报错
    public Enemy() { }
 
    public Enemy(string name, int attack, string[] devices)
    {
        this.name = name;
        this.attack = attack;
        this.devices = devices;
    }
}
 
public class Data
{
    public string version;
    public Hero[] heros;
    public Enemy[] enemys;
 
    // 这个要有，不然JsonMapper.ToObject<T>(jsonStr) 会报错
    public Data(){}
 
    public Data(string version, Hero[] heros, Enemy[] enemys)
    {
        this.version = version;
        this.heros = heros;
        this.enemys = enemys;
    }
}
 
public class JsonTest : MonoBehaviour
{
    Data data;
 
    // Start is called before the first frame update
    void Start()
    {
        Init();
 
        string jsonStr = DataObjectToJson(data);
 
        Debug.Log("DataObjectToJson :" + jsonStr);
 
        Data jsonToObject = DataJsonToObject<Data>(jsonStr);
        Debug.Log("DataJsonToObject:");
        Debug.Log("version:" + jsonToObject.version);
        Debug.Log("heros:");
        foreach(Hero hero in jsonToObject.heros){
            Debug.Log(hero.name + " " + hero.level + " " +hero.attack);
        }
 
        Debug.Log("enemys:");
        foreach (Enemy enemy in jsonToObject.enemys)
        {
            Debug.Log(enemy.name + " " + enemy.attack);
            foreach (string str in enemy.devices) {
                Debug.Log(str);
            }
        }
 
 
    }
 
    // Update is called once per frame
    void Update()
    {
        
    }
 
    void Init() {
        Hero superman = new Hero("SuperMan",20,345);
        Hero batman = new Hero("BatMan",19,321);
        Hero spiderman = new Hero("SpiderMan",19,301);
 
        Enemy joker = new Enemy("Joker",298,new string[] { "gun","knife"});
        Enemy blackWidow = new Enemy("BlackWidow", 301, new string[] { "gun", "knife" });
 
        data = new Data("1.0.2", new Hero[] {superman,batman,spiderman}, new Enemy[] {joker,blackWidow });
 
    }
 
    /// <summary>
    /// 转为json数据
    /// </summary>
    /// <typeparam name="T"></typeparam>
    /// <param name="t"></param>
    /// <returns></returns>
    string DataObjectToJson<T>(T t)  {
 
        return JsonMapper.ToJson(t);
    }
 
    /// <summary>
    /// json 转为 object
    /// </summary>
    /// <typeparam name="T"></typeparam>
    /// <param name="jsonStr"></param>
    /// <returns></returns>
    T DataJsonToObject<T>(string jsonStr) {
 
        return JsonMapper.ToObject<T>(jsonStr);
    }
}
 
 

 

 

七、后记（在Unity中读取Resource 中的json数据，一次解析json 数据列表）

JsonMapper.ToObject<List<Field>>(jsonString)

1、代码函数

public class JsonParse:MonoBehaviour
{
 
    List<Field> LocalArrowBleList = new List<Field>();
 
    IEnumerator GetLocalBowBeacons()
    {
            yield return  null;
 
            TextAsset t = Resources.Load("BowBeacon") as TextAsset;
            string s = t.text;
            LocalArrowBleList = JsonMapper.ToObject<List<Field>>(s);
            StreamWriter sw = new StreamWriter(Application.dataPath +     "arrowbeacons_0310_02.json", false, Encoding.UTF8);
 
            if((s != null))
            {
                Debug.Log(s);
                sw.WriteLine(s);
              
            }
            sw.Close();
 
            Debug.Log(LocalArrowBleList.Count.ToString());
    }
}
 
 
    /// <summary>
    /// json数据结构
    /// </summary>
    public class Field
    {
        public string mac;
        public string device_id;
        public bool device_is_using;
        public string comment;
 
 
        public Field() { }
        public Field(string mac, string id, bool state, string comment) {
            this.mac = mac;
            this.device_id = id;
            this.device_is_using = state;
            this.comment = comment;
        }
    }

 

2、json 数据 (文件名：BowBeacon.txt)

[{"mac":"FE:38:78:B7:3C:D4","device_id":"PFBOW00001","device_is_using":true,"comment":"北京市使用"},
{"mac":"FE:38:78:B7:3C:FA","device_id":"PFBOW00002","device_is_using":true,"comment":"北京市使用"},
{"mac":"FE:38:78:B7:3C:D8","device_id":"PFBOW00003","device_is_using":true,"comment":"北京市使用"},
{"mac":"FE:38:78:B7:3C:E5","device_id":"PFBOW00004","device_is_using":true,"comment":"北京市使用"},
{"mac":"00:00:00:70:00:23","device_id":"PFBOW00088","device_is_using":true,"comment":"深圳市使用"},
{"mac":"00:00:00:70:00:2E","device_id":"PFBOW00081","device_is_using":true,"comment":"深圳市使用"},
{"mac":"00:00:00:70:00:30","device_id":"PFBOW00069","device_is_using":true,"comment":"深圳市使用"},
{"mac":"FE:38:78:B7:3D:91","device_id":"PFBOW00010","device_is_using":true,"comment":"深圳市使用"},
{"mac":"FE:38:78:B7:3C:D0","device_id":"PFBOW001HY","device_is_using":true,"comment":"武汉市火油使用"},
{"mac":"FE:38:78:00:01:02","device_id":"PFBOW002HY","device_is_using":true,"comment":"武汉市火油使用"}]