用ASP.NET實現(xiàn)下載遠(yuǎn)程圖片保存到本地的方法保存抓取遠(yuǎn)程圖片的方法

2024-07-11 08:48:10

字體：大中小

供稿：網(wǎng)友

以下介紹兩種方法：
1.利用WebRequest，WebResponse 類
WebRequest wreq=WebRequest.Create("//files.VeVb.com/file_images/article/201205/logo.gif");
    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
//下面直接輸出
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 類
WebClient my=new WebClient();
    byte[] mybyte;
    mybyte=my.DownloadData("//files.VeVb.com/file_images/article/201205/logo.gif");            MemoryStream ms=new MemoryStream(mybyte);
    System.Drawing.Image img;
    img = System.Drawing.Image.FromStream(ms);
    img.Save("D://a.gif",ImageFormat.Gif);   //保存
//下面直接輸出
Response.ClearContent();
    Response.ContentType="image/gif";
    Response.BinaryWrite(mybyte);
如果是真實的圖片地址直接用
my.DownloadFile("//files.VeVb.com/file_images/article/201205/logo.gif","D://a.gif");   //保存
直接可以保存

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