/Ferry/archive/2011/01/18/1937974.html
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Handler.ashx
<% @ WebHandler Language = " C# " Class = " Handler " %> using System; using System.Web; using System.Net; using System.Drawing; using System.IO; public class Handler : IHttpHandler { public void ProcessRequest (HttpContext context) { string imgUrl = context.Request[ " Url " ]; if ( ! string .IsNullOrEmpty(imgUrl)) { Uri myUri = new Uri(imgUrl); WebRequest webRequest = WebRequest.Create(myUri); WebResponse webResponse = webRequest.GetResponse(); Bitmap myImage = new Bitmap(webResponse.GetResponseStream()); MemoryStream ms = new MemoryStream(); myImage.Save(ms, System.Drawing.Imaging.ImageFormat.Jpeg); context.Response.ClearContent(); context.Response.ContentType = " image/Jpeg " ; context.Response.BinaryWrite(ms.ToArray()); } } public bool IsReusable { get { return false ; } }}
补充：
读取本地文件，如：d:/1.jpg
<% @ WebHandler Language = " C# " Class = " Handler2 " %> using System; using System.Web; using System.IO; using System.Drawing; public class Handler2 : IHttpHandler { public void ProcessRequest(HttpContext context) { string path = context.Request.QueryString[ " path " ]; if ( ! string .IsNullOrEmpty(path)) { FileStream fs = new FileStream(@path, FileMode.Open, FileAccess.Read); Bitmap myImage = new Bitmap(fs); MemoryStream ms = new MemoryStream(); myImage.Save(ms, System.Drawing.Imaging.ImageFormat.Jpeg); context.Response.ClearContent(); context.Response.ContentType = " image/Jpeg " ; context.Response.BinaryWrite(ms.ToArray()); } } public bool IsReusable { get { return false ; } }}