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"]);         }              } }

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 {     /// 
     /// GetPhotoList 的摘要说明     /// 
     public class GetPhotoList : IHttpHandler     {          public void Proce***equest(HttpContext context)         {             context.Response.ContentType = "text/plain";             string id = context.Request.Form["id"];             string path = context.Request.PhysicalApplicationPath;             //context.Response.Write("Hello World");             List photos = GetPhotos(id,path);             DataContractJsonSerializer djson = new DataContractJsonSerializer(photos.GetType());             djson.WriteObject(context.Response.OutputStream, photos);         }          public List 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 photos = new List();             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;     } }

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