<%@ WebHandler Language="C#" Class="UploadImage" %>

using System;
using System.Web;
using System.Net;
using System.IO;
using System.Drawing;
using System.Drawing.Imaging;
using Tencent;

public class UploadImage : IHttpHandler {

    public void ProcessRequest(HttpContext context)
    {
        Tencent.Weixin wx = new Tencent.Weixin(context);
        wx.Messager.GetAccesstoken();
        string access_token = Tencent.WeixinStatic.AccessToken.Token;

        if (access_token == "")
        {
            context.Response.Write("0");
            context.Response.End();
            return;
        }

        string allid = context.Request.QueryString["download"].ToString();
        string[] allidArr = allid.Split(',');
        string result = "";
        string strpath = "";
        string wwwroot = context.Request.ApplicationPath;
        if (wwwroot == "/") wwwroot = "";
        string fileSavaPath = "/app_files/default";


        try
        {
            foreach (string itemid in allidArr)
            {
                string url = "https://qyapi.weixin.qq.com/cgi-bin/media/get?access_token=" + access_token + "&media_id=" + itemid;
               Log.WriteLog(context.Server.MapPath(wwwroot + "/app_wx/hse/logs"), "access_token:" + access_token + "          media_id:" + itemid);
                HttpWebRequest req = (HttpWebRequest)HttpWebRequest.Create(url);
                req.Method = "GET";
                using (WebResponse wr = req.GetResponse())
                {
                    HttpWebResponse myResponse = (HttpWebResponse)req.GetResponse();
                    strpath = myResponse.ResponseUri.ToString();
                    //WriteLog("接收类别://" + myResponse.ContentType);
                    WebClient mywebclient = new WebClient();
                    string filename = fileSavaPath + "/" + DateTime.Now.ToString("yyyyMMddHHmmssfff")  + ".jpg.1";
                    string savepath = context.Server.MapPath(wwwroot + filename);
                    //WriteLog("路径://" + savepath);
                    mywebclient.DownloadFile(strpath, savepath);
                    result += filename + "|";
                }
            }
        }
        catch (Exception e)
        {
            context.Response.Write("0");
            context.Response.End();
            return;
        }
        
        if(result != "")
        {
            result = result.Substring(0, result.Length - 1);
        }
        
        context.Response.Write(result);
    }

    
    
    public bool IsReusable {
        get {
            return false;
        }
    }

}