//using System;
//using System.Collections.Generic;
//using System.Linq;
//using System.Text;
//using System.Threading.Tasks;
//using System.Net;
//using System.IO;
//using System.Collections.Specialized;

//namespace HXX.Scanner.Biz
//{
//    /// <summary>
//    /// http工具
//    /// </summary>
//    public partial class http_helper
//    {
//        /// <summary>
//        /// 同时带参数和文件的post
//        /// </summary>
//        /// <param name="url">url</param>
//        /// <param name="file_list">文件路径列表</param>
//        /// <param name="paramName">文件参数名</param>
//        /// <param name="contentType">文件类型</param>
//        /// <param name="nvc">普通参数列表</param>
//        /// <returns></returns>
//        public static string HttpUploadFile(string url, List<string> file_list, string paramName, string contentType, NameValueCollection nvc)
//        {
//            string result = string.Empty;

//            string boundary = "---------------------------" + DateTime.Now.Ticks.ToString("x");
//            byte[] boundarybytes = System.Text.Encoding.ASCII.GetBytes("\r\n--" + boundary + "\r\n");

//            HttpWebRequest wr = (HttpWebRequest)WebRequest.Create(url);
//            wr.ContentType = "multipart/form-data; boundary=" + boundary;
//            wr.Method = "POST";
//            wr.KeepAlive = true;
//            wr.Credentials = System.Net.CredentialCache.DefaultCredentials;

//            Stream rs = wr.GetRequestStream();

//            string formdataTemplate = "Content-Disposition: form-data; name=\"{0}\"\r\n\r\n{1}";
//            foreach (string key in nvc.Keys)
//            {
//                rs.Write(boundarybytes, 0, boundarybytes.Length);
//                string formitem = string.Format(formdataTemplate, key, nvc[key]);
//                byte[] formitembytes = System.Text.Encoding.UTF8.GetBytes(formitem);
//                rs.Write(formitembytes, 0, formitembytes.Length);
//            }
//            rs.Write(boundarybytes, 0, boundarybytes.Length);

//            foreach (var file in file_list)
//            {
//                //string headerTemplate = "Content-Disposition: form-data; name=\"{0}\"; filename=\"{1}\"\r\nContent-Type: {2};\r\naccess_token:\"{3}\"\r\n\r\n";
//                string headerTemplate = "Content-Disposition: form-data; name=\"{0}\"; filename=\"{1}\"\r\nContent-Type: {2};\r\n\r\n";
//                string header = string.Format(headerTemplate, paramName, file, contentType);
//                byte[] headerbytes = System.Text.Encoding.UTF8.GetBytes(header);
//                rs.Write(headerbytes, 0, headerbytes.Length);

//                FileStream fileStream = new FileStream(file, FileMode.Open, FileAccess.Read);
//                byte[] buffer = new byte[4096];
//                int bytesRead = 0;
//                while ((bytesRead = fileStream.Read(buffer, 0, buffer.Length)) != 0)
//                {
//                    rs.Write(buffer, 0, bytesRead);
//                }
//                fileStream.Close();

//                byte[] trailer = System.Text.Encoding.ASCII.GetBytes("\r\n--" + boundary + "--\r\n");
//                rs.Write(trailer, 0, trailer.Length);
//            }

//            rs.Close();

//            WebResponse wresp = null;

//            try
//            {
//                wresp = wr.GetResponse();
//                Stream stream2 = wresp.GetResponseStream();
//                StreamReader reader2 = new StreamReader(stream2);

//                result = reader2.ReadToEnd();
//            }
//            catch (Exception ee)
//            {
//                string msg = ee.Message + Environment.NewLine + Environment.NewLine;

//                msg += "URL:" + url + Environment.NewLine + "Method:POST" + Environment.NewLine +
//                    "Content:" + "" + Environment.NewLine;

//                System.Net.WebException webEE = ee as System.Net.WebException;

//                if (webEE != null && webEE.Response != null)
//                {
//                    using (System.IO.Stream st = webEE.Response.GetResponseStream())
//                    {
//                        using (System.IO.StreamReader sr = new System.IO.StreamReader(st, Encoding.UTF8))
//                        {
//                            string webmsg = sr.ReadToEnd();

//                            msg += Environment.NewLine + Environment.NewLine + webmsg;
//                        }
//                    }
//                }

//                throw new Exception(msg);
//            }
//            finally
//            {
//                wr = null;
//            }

//            return result;
//        }
//    }
//}