using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Net;
using System.Text;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Xml;

namespace ApplyTest
{
    public partial class SendPost : System.Web.UI.Page
    {
        /*addn_inf=测试&auth_code=282733289026142825&curr_type=CNY&goods_des=统一爱夸水&
          goods_detail=测试&goods_tag=&ins_cd=08M0062887&mchnt_cd=0002900F0370561&
          mchnt_order_no=100162980022116110115294700016&order_amt=300&order_type=ALIPAY&
          random_str=6WS0PM&sence=1&term_id=10016298&term_ip=120.27.128.115&txn_begin_ts=20161101152947&version=1*/
        protected void Page_Load(object sender, EventArgs e)
        {
            ////声明一个XMLDoc文档对象，LOAD（）xml字符串
            //XmlDocument doc = new XmlDocument();
            //doc.LoadXml("<entity><version>1.2.0_2012_12_05</version></entity>");
            ////把XML发送出去
            //Response.Write(doc.InnerXml);
            //Response.End();
            XmlDocument xmlDoc = new XmlDocument();
            xmlDoc.Load("E:\\000_通用版本\\000_通用版本\\011_支付宝\\AppForApply\\ApplyTest\\XMLFile.xml");
            returntext.Text = PostXml("http://116.239.4.195:28164/micropay?req=" +
                HttpUtility.UrlEncode(ConvertXmlToString(xmlDoc), Encoding.GetEncoding("gbk")),
                HttpUtility.UrlEncode(ConvertXmlToString(xmlDoc), Encoding.GetEncoding("gbk")));
            //returntext.Text = PostXmlToUrl("http://116.239.4.195:28164/micropay?req=",
            //    System.Web.HttpUtility.UrlEncode(ConvertXmlToString(xmlDoc), Encoding.GetEncoding("gbk")));
            DeCodeText.Text = System.Web.HttpUtility.UrlDecode(returntext.Text, Encoding.GetEncoding("gbk"));
        }

        /// C#  POST 发送XML  
        /// </summary>  
        /// <param name="url">目标Url</param>  
        /// <param name="strPost">要Post的字符串(数据)</param>  
        /// <returns>服务器响应</returns>  
        private string PostXml(string url, string strPost)
        {
            string result = string.Empty;
            //就是把字符串str按照简体中文(ASCIIEncoding.ASCII)的编码方式，  
            //编码成 Bytes类型的字节流数组;  
            // 要注意的这是这个编码方式，还有内容的Xml内容的编码方式,如果没有注意对应会出现文末的错误  
            byte[] buffer = Encoding.GetEncoding("gbk").GetBytes(strPost);
            StreamWriter myWriter = null;
            //根据url创建HttpWebRequest对象   
            HttpWebRequest objRequest = (HttpWebRequest)WebRequest.Create(url);
            //Our method is post, otherwise the buffer (postvars) would be useless  
            objRequest.Method = "POST";
            objRequest.ContentLength = buffer.Length;
            objRequest.ContentType = "text/xml";//提交xml   
            //objRequest.ContentType = "application/x-www-form-urlencoded";//提交表单  
            try
            {
                myWriter = new StreamWriter(objRequest.GetRequestStream(), Encoding.GetEncoding("gbk"));
                myWriter.Write(strPost);
            }
            catch (Exception e)
            {
                return e.Message;
            }
            finally
            {
                myWriter.Close();
            }
            //读取服务器返回信息  
            HttpWebResponse objResponse = (HttpWebResponse)objRequest.GetResponse();
            //using作为语句，用于定义一个范围，在此范围的末尾将释放对象  
            using (StreamReader sr = new StreamReader(objResponse.GetResponseStream(), Encoding.GetEncoding("gbk")))
            {
                //ReadToEnd适用于小文件的读取，一次性的返回整个文件  
                result = sr.ReadToEnd();
                sr.Close();
            }
            return result;
        }

        protected string PostXmlToUrl(string url, string data)
        {
            HttpWebRequest hwr = (HttpWebRequest)HttpWebRequest.Create(url);
            hwr.Method = "POST";
            hwr.ContentType = "text/xml";
            Stream stream = hwr.GetRequestStream();

            StreamWriter sw = new StreamWriter(stream, System.Text.Encoding.GetEncoding("gbk"));
            sw.Write(data);
            sw.Close();

            stream = hwr.GetResponse().GetResponseStream();

            StreamReader sr = new StreamReader(stream, System.Text.Encoding.GetEncoding("gbk"));
            string ret = sr.ReadToEnd();
            sr.Close();

            return ret;

        }

        /// <summary>  
        /// 将XmlDocument转化为string  
        /// </summary>  
        /// <param name="xmlDoc"></param>  
        /// <returns></returns>  
        public string ConvertXmlToString(XmlDocument xmlDoc)
        {
            MemoryStream stream = new MemoryStream();
            XmlTextWriter writer = new XmlTextWriter(stream, null);
            writer.Formatting = Formatting.Indented;
            xmlDoc.Save(writer);
            StreamReader sr = new StreamReader(stream, System.Text.Encoding.UTF8);
            stream.Position = 0;
            string xmlString = sr.ReadToEnd();
            sr.Close();
            stream.Close();
            return xmlString;
        }
    }
}