Unity数据下载

  1 /* HttpRequestTest.cs
  2  * 采用C#的WebClinet类下载数据，多线程，但需要在主线程里转成texture。
  3  */
  4 using System;
  5 using System.Text;
  6 using System.Net;
  7 using UnityEngine;
  8 
  9 public enum RequestType
 10 {
 11     Text,
 12     Image
 13 }
 14 
 15 public interface IHttpRequest
 16 {
 17     void CaptureRequestData(int requestTag, string requestData);
 18     void CaptureRequestTexture(int requestTag, byte[] texture);
 19     void LostRequestData(int requestTag, string requestData);
 20 }
 21 
 22 public class HttpRequestInfo
 23 {
 24     public IHttpRequest httpRequest;
 25     public RequestType requestType;
 26     public int requestTag;
 27     
 28     public HttpRequestInfo (IHttpRequest httpRequest, RequestType requestType, int requestTag)
 29     {
 30         this.httpRequest = httpRequest;
 31         this.requestType = requestType;
 32         this.requestTag = requestTag;
 33     }
 34 }
 35 
 36 public class HttpRequestTest : MonoBehaviour
 37 {
 38     public static HttpRequestTest inst = null;
 39 
 40     void Awake()
 41     {
 42         inst = this;
 43     }
 44 
 45     public void DownloadData(IHttpRequest httpRequest, RequestType requestType, string httpUrl, int requestTag)
 46     {
 47         WebClient webClient = new WebClient();
 48         webClient.DownloadDataCompleted += DownloadDataCompletedCallback;
 49         webClient.DownloadDataAsync(new Uri(httpUrl), new HttpRequestInfo(httpRequest, requestType, requestTag));
 50     }
 51 
 52     private void DownloadDataCompletedCallback(object sender, DownloadDataCompletedEventArgs args)
 53     {
 54         HttpRequestInfo    httpRequestInfo = args.UserState as HttpRequestInfo;
 55         if(!args.Cancelled && args.Error == null)
 56         {
 57             if(httpRequestInfo.requestType == RequestType.Text)
 58             {
 59                 httpRequestInfo.httpRequest.CaptureRequestData(httpRequestInfo.requestTag, Encoding.UTF8.GetString(args.Result));
 60             }
 61             else if(httpRequestInfo.requestType == RequestType.Image)
 62             {
 63                 httpRequestInfo.httpRequest.CaptureRequestTexture(httpRequestInfo.requestTag, args.Result);
 64             }
 65         }
 66         else
 67         {
 68             string requestError = args.Error.Message;
 69             httpRequestInfo.httpRequest.LostRequestData(httpRequestInfo.requestTag, requestError);
 70         }
 71     }
 72 
 73 }
 74 
 75 
 76 
 77 /* HttpRequestTestNew.cs
 78  * 方便直接，但不是多线程，因此能得到texture。
 79  */
 80 using UnityEngine;
 81 using System.Collections;
 82 
 83 public enum RequestType
 84 {
 85     Text,
 86     Image
 87 }
 88 
 89 public interface IHttpRequest
 90 {
 91     void CaptureRequestData(int requestTag, string requestData);
 92     void CaptureRequestTexture(int requestTag, Texture texture);
 93     void LostRequestData(int requestTag, string requestData);
 94 }
 95 
 96 public class HttpRequestTestNew : MonoBehaviour
 97 {
 98     public static HttpRequestTestNew inst = null;
 99 
100     void Awake()
101     {
102         inst = this;
103     }
104 
105     public void DownloadData(IHttpRequest httpRequest, RequestType requestType, string httpUrl, int requestTag)
106     {
107         WWW www = new WWW(httpUrl);
108         StartCoroutine(DownloadCoroutine(www, httpRequest, requestType, requestTag));
109     }
110 
111     private IEnumerator DownloadCoroutine(WWW www, IHttpRequest httpRequest, RequestType requestType, int requestTag)
112     {
113         yield return www;
114         if(!string.IsNullOrEmpty(www.error))
115         {
116             Debug.LogError("www is error!");
117             httpRequest.LostRequestData(requestTag, www.error);
118         }
119         else
120         {
121             switch(requestType)
122             {
123             case RequestType.Text:
124                 httpRequest.CaptureRequestData(requestTag, www.text);
125                 break;
126             case RequestType.Image:
127                 httpRequest.CaptureRequestTexture(requestTag, www.texture);
128                 break;
129             }
130         }
131         if(www.isDone)
132             www.Dispose();
133     }
134 }