ASP.NET¶ÁÈ¡ÍøÂçͼƬ²¢ÔÚÒ³ÃæÉÏÏÔʾ

<! DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd" >
< html xmlns ="http://www.w3.org/1999/xhtml" >
< head >
< title ></ title >
</ head >
< body >
< form id ="form1" runat ="server" >
< div >
< img src ="Handler.ashx?url=http://www.google.com.hk/intl/zh-CN/images/logo_cn.png"
alt ="google logo" />
</ div >
</ form >
</ body >
</ html >

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 ;
}
}
}

²¹³ä：

¡¡¡¡¶ÁÈ¡±¾µØÎļþ，Èç：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 ;
}
}

}

תÔØÓÚ:https://www.cnblogs.com/Ferry/archive/2011/01/18/1937974.html