<%@ WebHandler Language="C#" Class="Taobaoke" %>

using System;
using System.Web;
using System.Net;
using System.Xml;
using System.Text;
using System.Web.Security;
using System.Collections.Generic;

public class Taobaoke : IHttpHandler {
    
    public void ProcessRequest (HttpContext context) {
        
        //1.应用信息

        string app_key = "10011201";
        string app_secret = "0fd3ffcb7008570b95670ec5ad3fe201";
        
        //2.参数集
        
        SortedList<string, string> parameters = new SortedList<string, string>();
        
        //2.1 应用级输入参数
        parameters.Add("fields", "iid,title,nick,pic_url,price,click_url");
        parameters.Add("pid", "mm_12851146_0_0");
        parameters.Add("keyword", "竹炭");
        parameters.Add("cid", "");
        parameters.Add("strat_price", "");
        parameters.Add("end_price", "");
        parameters.Add("auto_send", "");
        parameters.Add("area", "福州");
        parameters.Add("credit", "");
        parameters.Add("sort", "price_asc");
        parameters.Add("is_guarantee", "");
        parameters.Add("page_no", "1");
        parameters.Add("page_size", "40");
        
        //2.2 系统级参数
        parameters.Add("method", "taobao.taobaoke.items.get");
        parameters.Add("session", "");
        parameters.Add("timestamp", DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss"));
        parameters.Add("format", "xml");
        parameters.Add("app_key", app_key);
        parameters.Add("v", "1.0");

        //2.3 生成sign,格式: app_secret参数1值1参数2值2,生成md5后转为大写
        StringBuilder sb = new StringBuilder();
        sb.Append(app_secret);
        foreach (KeyValuePair<string, string> item in parameters)
        {
            sb.Append(item.Key + item.Value);
        }
        parameters.Add("sign", FormsAuthentication.HashPasswordForStoringInConfigFile(sb.ToString(), "MD5").ToUpper());
        
        //3.生成url
        string url = "http://gw.sandbox.taobao.com/router/rest?";//线上环境: http://gw.api.taobao.com/router/rest  测试环境: http://gw.sandbox.taobao.com/router/rest
        StringBuilder query = new StringBuilder();
        foreach (KeyValuePair<string, string> item in parameters)
        {
            query.Append(item.Key + "=" + System.Web.HttpUtility.UrlEncode(item.Value, System.Text.Encoding.UTF8) + "&");
        }
        url += query.ToString().TrimEnd(new char[] { '&' });

        //4.淘宝客商品查询
        try
        {
            WebRequest webRequest = WebRequest.Create(new Uri(url));
            webRequest.ContentType = "application/x-www-form-urlencoded";
            webRequest.Method = "POST";
            webRequest.Timeout = 5000;
            XmlDocument xmlDocument = new XmlDocument();
            xmlDocument.Load(((WebResponse)webRequest.GetResponse()).GetResponseStream());

            context.Response.ContentType = "text/xml";
            context.Response.Write(xmlDocument.InnerXml);
        }
        catch (Exception ex)
        {
            context.Response.Write(ex.Message);
        }
        
    }

    public bool IsReusable {
        get {
            return false;
        }
    }

}