C#获取远程图片，需要Form用户名和密码的Authorization认证
C#获取远程图片，需要Form用户名和密码的Authorization认证
using System;using System.Collections.Generic;using System.Drawing;using System.IO;using System.Linq;using System.Net;using System.Text;using System.Web;using System.Web.UI;using System.Web.UI.WebControls;namespace Web.App_Code{ public partial class GetFlexImage : System.Web.UI.Page { public static readonly log4net.ILog log = log4net.LogManager.GetLogger(System.Reflection.MethodBase.GetCurrentMethod().DeclaringType); protected void Page_Load(object sender, EventArgs e) { if(Request["IMG"]==null||string.IsNullOrEmpty(Request["IMG"])) { return; } try { string url = (Request["IMG"]).Replace("%","%25"); HttpWebRequest WRequest; HttpWebResponse response = null; Uri uri = new Uri(url); CredentialCache cc = new CredentialCache(); cc.Add(uri, "Basic", new NetworkCredential("epapi", "密码")); WRequest = (HttpWebRequest)HttpWebRequest.Create(uri); WRequest.Credentials = cc; WRequest.PreAuthenticate = true; WRequest.Method = "POST"; WRequest.AllowWriteStreamBuffering = false; WRequest.SendChunked = false; WRequest.KeepAlive = true; WRequest.ContentLength = 0; //WRequest.SendChunked = true; //WRequest.ContentLength = 100000; WRequest.Timeout = 30000; WRequest.Headers.Add("Authorization", "Basic " + Convert.ToBase64String(new ASCIIEncoding().GetBytes("epapi:epapiadmin"))); try { response = (HttpWebResponse)WRequest.GetResponse(); } catch (WebException er) { response = (HttpWebResponse)er.Response; } Bitmap myImage = new Bitmap(response.GetResponseStream()); MemoryStream ms = new MemoryStream(); myImage.Save(ms, System.Drawing.Imaging.ImageFormat.Gif); Response.ClearContent(); Response.ContentType = "image/gif"; log.Debug("图片加载：" + (Request["IMG"])); Response.BinaryWrite(ms.ToArray()); } catch(Exception err) { log.Debug("图片加载异常：" + Server.HtmlDecode(Request["IMG"]) + err.Message); } } }}TAG:
