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【Asp.Net】 asp.net抓取远程图片

作者:特务小强 / 发布于2012/7/9/ 804

1.利用WebRequest，WebResponse 类 1.利用WebRequest，WebResponse 类

<div>
1.利用WebRequest，WebResponse 类
WebRequest wreq = WebRequest.Create("<a href="http://www.baidu.com/img/logo-yy.gif">http://www.baidu.com/img/logo-yy.gif</a>");
 HttpWebResponse wresp = (HttpWebResponse)wreq.GetResponse();
 Stream s = wresp.GetResponseStream();
 System.Drawing.Image img;
 img = System.Drawing.Image.FromStream(s);
 img.Save("D:\\aa.gif", ImageFormat.Gif); //保存 
 //下面直接输出 
 MemoryStream ms = new MemoryStream();
 img.Save(ms, ImageFormat.Gif);
 img.Dispose();
 Response.ClearContent();
 Response.ContentType = "image/gif";
 Response.BinaryWrite(ms.ToArray());
2.利用 WebClient 类

WebClient my = new WebClient();
 byte[] mybyte;
 mybyte = my.DownloadData("<a href="http://www.baidu.com/img/logo-yy.gif">http://www.baidu.com/img/logo-yy.gif</a>"); MemoryStream ms = new MemoryStream(mybyte);
 System.Drawing.Image img;
 img = System.Drawing.Image.FromStream(ms);
 img.Save("D:\\a.gif", ImageFormat.Gif); //保存 
 //下面直接输出 
 Response.ClearContent();
 Response.ContentType = "image/gif";
 Response.BinaryWrite(mybyte);
 //如果是真实的图片地址直接用 
 my.DownloadFile("<a href="http://www.baidu.com/img/logo-yy.gif">http://www.baidu.com/img/logo-yy.gif</a>", "D:\\a.gif");
 //保存直接可以保存
 WebRequest request = WebRequest.Create("upload/200904022000525545.gif");
 WebResponse response = request.GetResponse();
 Stream reader = response.GetResponseStream();
 FileStream writer = new FileStream("D:\\logo.gif", FileMode.OpenOrCreate, FileAccess.Write);
 byte[] buff = new byte[512];
 int c = 0; //实际读取的字节数
 while ((c = reader.Read(buff, 0, buff.Length)) > 0)
 {
 writer.Write(buff, 0, c);
 }
 writer.Close();
</div>

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　抓取远程图片　

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