unity请求json数据并解析

unity3d在跟.net进行http通信的时候，最常见的就是表单数据的提交请求了，但服务器端会返回一坨json数据，这就要求我们在unity中进行json数据的处理了，一般unity中处理json个数数据用的最多的就是LitJSON(它是.net平台下处理SON数据库的类库)。下面我就贴出源码，仅供学习参考！

关于LitJSON的安装和使用，请参考：http://www.360doc.com/content/13/0117/11/10941785_260686840.shtml

或者参考：http://blog.csdn.net/dingxiaowei2013/article/details/17115665

将LitJson.dll放在assets目录下的plugins文件下，如果没有plugins文件就手动创建一个

Client：

 using UnityEngine;
 using System.Collections;
 using LitJson;

 public class GetPhotoList : MonoBehaviour {

     // Use this for initialization
     void Start () {
         StartCoroutine(GetPhotos());
     }

     // Update is called once per frame
     IEnumerator GetPhotos(){
         WWWForm    form = new WWWForm();
         form.AddField("id","123");
         WWW w = new WWW("http://localhost:36944/GetPhotoList.ashx",form);
         while (!w.isDone){yield return new WaitForEndOfFrame();}
         if (w.error != null){Debug.LogError(w.error);}
         Debug.Log(w.text);
         JsonData jd = JsonMapper.ToObject(w.text);
         for (int i = 0; i < jd.Count; i++)
         {
             Debug.Log("id=" + jd[i]["id"]);
             Debug.Log("name=" + jd[i]["name"]);
         }

     }
 }

Server：

 using System;
 using System.Collections.Generic;
 using System.Linq;
 using System.Web;
 using System.Runtime.Serialization.Json;
 using System.ServiceModel;
 using System.ServiceModel.Web;
 using System.IO;

 namespace UpdatePhoto
 {
     /// <summary>
     /// GetPhotoList 的摘要说明
     /// </summary>
     public class GetPhotoList : IHttpHandler
     {

         public void ProcessRequest(HttpContext context)
         {
             context.Response.ContentType = "text/plain";
             string id = context.Request.Form["id"];
             string path = context.Request.PhysicalApplicationPath;
             //context.Response.Write("Hello World");
             List<Photo> photos = GetPhotos(id,path);
             DataContractJsonSerializer djson = new DataContractJsonSerializer(photos.GetType());
             djson.WriteObject(context.Response.OutputStream, photos);
         }

         public List<Photo> GetPhotos(string id,string path)
         {
             //获取目录
             string localPath = path+id + "\\";
             //读取目录下的文件
             if (!Directory.Exists(localPath)) return null;
             string[] files = Directory.GetFiles(localPath);
             List<Photo> photos = new List<Photo>();
             foreach (string file in files)
             {
                 string filename = file.Substring(file.LastIndexOf('\\')+1);
                 Photo p = new Photo();
                 p.name = filename;
                 p.id = id;
                 photos.Add(p);
             }


             return photos;
         }

         public bool IsReusable
         {
             get
             {
                 return false;
             }
         }
     }

     public class Photo
     {
         public string id;
         public string name;
     }
 }