Unity3d之json解析研究
JSON简单易用，我要好好研究一下，和大家共享一下.
想了解更详细的数据可以参考一下百科：http://baike.baidu.com/view/136475.htm
好了，我们步入正题：unity3d使用json
我写了4个方法：ReadJson(),ReadJsonFromTXT();WriteJsonAndPrint(),WriteJsonToFile(string,string).
想使用JSon需要dll动态链接库
还有一些相应的命名空间using UnityEngine;
using System.Collections;
using LitJson;
using System.IO;
#if UNITY_EDITOR
using UnityEditor;
#endif
首先你需要2个字符串，一个为路径，一个文txt文件。
我的写法如下：
public TextAsset txt;
public string filePath;
public string fileName;
// Use this for initialization
void Start () {
filePath = Application.dataPath + "/TextFile";
fileName = filePath + "/File.txt";
}
1. //读json数据
void ReadJson()
{
//注意json格式。我的只能在一行写入啊，要不就报错，懂的大牛，不吝赐教啊，这是为什么呢？
string str = "{'name':'taotao','id':10,'items':[{'itemid':1001,'itemname':'dtao'},{'itemid':1002,'itemname':'test_2'}]}";
//这里是json解析了
JsonData jd = JsonMapper.ToObject(str);
Debug.Log("name=" + jd["name"]);
Debug.Log("id=" + jd["id"]);
JsonData jdItems = jd["items"];
//注意这里不能用枚举foreach，否则会报错的，看到网上
//有的朋友用枚举，但是我测试过，会报错，我也不太清楚。
//大家注意一下就好了
for (int i = 0; i < jdItems.Count; i++)
{
Debug.Log("itemid=" + jdItems[i]["itemid"]);
Debug.Log("itemname=" + jdItems[i]["itemname"]);
}
Debug.Log("items is or not array,it's " + jdItems.IsArray);
}
2. //从TXT文本里都json
void ReadJsonFromTXT()
{
//解析json
JsonData jd = JsonMapper.ToObject(txt.text);
Debug.Log("hp:" + jd["hp"]);
Debug.Log("mp:" + jd["mp"]);
JsonData weapon = jd["weapon"];
//打印一下数组
for (int i = 0; i < weapon.Count; i++)
{
Debug.Log("name="+weapon[i]["name"]);
Debug.Log("color="+weapon[i]["color"]);
Debug.Log("durability="+weapon[i]["durability"]);
}
}
3. //写json数据并且打印他
void WriteJsonAndPrint()
{
System.Text.StringBuilder strB = new System.Text.StringBuilder();
JsonWriter jsWrite = new JsonWriter(strB);
jsWrite.WriteObjectStart();
jsWrite.WritePropertyName("Name");
jsWrite.Write("taotao");
jsWrite.WritePropertyName("Age");
jsWrite.Write(25);
jsWrite.WritePropertyName("MM");
jsWrite.WriteArrayStart();
jsWrite.WriteObjectStart();
jsWrite.WritePropertyName("name");
jsWrite.Write("xiaomei");
jsWrite.WritePropertyName("age");
jsWrite.Write("17");
jsWrite.WriteObjectEnd();
jsWrite.WriteObjectStart();
jsWrite.WritePropertyName("name");
jsWrite.Write("xiaoli");
jsWrite.WritePropertyName("age");
jsWrite.Write("18");
jsWrite.WriteObjectEnd();
jsWrite.WriteArrayEnd();
jsWrite.WriteObjectEnd();
Debug.Log(strB);
JsonData jd = JsonMapper.ToObject(strB.ToString());
Debug.Log("name=" + jd["Name"]);
Debug.Log("age=" + jd["Age"]);
JsonData jdItems = jd["MM"];
for (int i = 0; i < jdItems.Count; i++)
{
Debug.Log("MM name=" + jdItems[i]["name"]);
Debug.Log("MM age=" + jdItems[i]["age"]);
}
}
4. //把json数据写到文件里
void WriteJsonToFile(string path,string fileName)
{
System.Text.StringBuilder strB = new System.Text.StringBuilder();
JsonWriter jsWrite = new JsonWriter(strB);
jsWrite.WriteObjectStart();
jsWrite.WritePropertyName("Name");
jsWrite.Write("taotao");
jsWrite.WritePropertyName("Age");
jsWrite.Write(25);
jsWrite.WritePropertyName("MM");
jsWrite.WriteArrayStart();
jsWrite.WriteObjectStart();
jsWrite.WritePropertyName("name");
jsWrite.Write("xiaomei");
jsWrite.WritePropertyName("age");
jsWrite.Write("17");
jsWrite.WriteObjectEnd();
jsWrite.WriteObjectStart();
jsWrite.WritePropertyName("name");
jsWrite.Write("xiaoli");
jsWrite.WritePropertyName("age");
jsWrite.Write("18");
jsWrite.WriteObjectEnd();
jsWrite.WriteArrayEnd();
jsWrite.WriteObjectEnd();
Debug.Log(strB);
//创建文件目录
DirectoryInfo dir = new DirectoryInfo(path);
if (dir.Exists)
{
Debug.Log("This file is already exists");
}
else
{
Directory.CreateDirectory(path);
Debug.Log("CreateFile");
#if UNITY_EDITOR
AssetDatabase.Refresh();
#endif
}
//把json数据写到txt里
StreamWriter sw;
if (File.Exists(fileName))
{
//如果文件存在，那么就向文件继续附加（为了下次写内容不会覆盖上次的内容)
sw = File.AppendText(fileName);
Debug.Log("appendText");
}
else
{
//如果文件不存在则创建文件
sw = File.CreateText(fileName);
Debug.Log("createText");
}
sw.WriteLine(strB);
sw.Close();
#if UNITY_EDITOR
AssetDatabase.Refresh();
#endif
}.
为了大家可以更形象理解一下。我用GUI了
void OnGUI()
{
GUILayout.BeginArea(new Rect(0, 0, Screen.width, Screen.height));
GUILayout.BeginHorizontal();
GUILayout.FlexibleSpace();
GUILayout.BeginVertical();
GUILayout.FlexibleSpace();
if (GUILayout.Button("ReadJson"))
{
ReadJson();
}
if (GUILayout.Button("ReadJsonFromTXT"))
{
ReadJsonFromTXT();
}
if (GUILayout.Button("WriteJsonAndPrint"))
{
WriteJsonAndPrint();
}
if (GUILayout.Button("WriteJsonToFile"))
{
WriteJsonToFile(filePath,fileName);
}
GUILayout.FlexibleSpace();
GUILayout.EndVertical();
GUILayout.FlexibleSpace();
GUILayout.EndHorizontal();
GUILayout.EndArea();
}
服务器上JSON的内容
[{"people":[
{"name":"fff","pass":"123456","age":"1", "info":{"sex":"man"}},
{"name":"god","pass":"123456","age":"1","info":{"sex":"woman"}},
{"name":"kwok","pass":"123456","age":"1","info":{"sex":"man"}},
{"name":"tom","pass":"123456","age":"1","info":{"sex":"woman"}}
]}
]
复制代码 LoadControl_c代码: using UnityEngine;
using System.Collections;
using LitJson; public class LoadControl_c:MonoBehaviour
{
private GameObject plane; public string url = "http://127.0.0.1/test2.txt"; // Use this for initialization
void Start()
{
StartCoroutine(LoadTextFromUrl()); //StartCoroutine(DoSomething()); //Book book = new Book("Android dep"); //InvokeRepeating("LaunchProjectile", 1, 5);
} IEnumerator DoSomething()
{
yield return new WaitForSeconds(3);
} IEnumerator LoadTextFromUrl()
{
if (url.Length > 0)
{
WWW www = new WWW(url);
yield return www;
//string data = www.data.ToString().Substring(1);
string data = www.text.ToString().Substring(1); // 下面是关键
print(data); LitJson.JsonData jarr = LitJson.JsonMapper.ToObject(www.text); if(jarr.IsArray)
{ for (int i = 0; i < jarr.Count; i++)
{
Debug.Log(jarr[i]["people"]); JsonData jd = jarr[i]["people"]; for(int j = 0; j < jd.Count; j++)
{
Debug.Log(jd[j]["name"]);
}
}
}
}
} }