using System.Net.Mime;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Security.Cryptography;
using System.Text;
using Library;
using System.Net;
using System.IO;
using Aop.Api.Util;

namespace MySystem
{
    public class HaoDaHelper
    {
        public readonly static HaoDaHelper Instance = new HaoDaHelper();
        private HaoDaHelper()
        {
        }


        #region 盒易付

        //测试环境
        // string BoxRequestUrl = "https://openapi-test.iboxpay.com/api";
        // string BoxAppId = "8840021411446784";
        // string BoxAppSecret = "xgwGnmYGjVy0GOWOWkQtRk8Hk8ur5tCV";
        // string BoxPublicKey = "MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAjMQxp24mjxDTr13uPW0y+tiO1yXFGw7P/pPQ0oZKK7F6KstEaus7pLEywBZ5XRXE5jgkhR2TS7Ne7djJfbpn5yFc6pPlz3ZsOfBVeB88NEwhx6xzCGX2eqSSkO33n8w2G0xc2ss5HpYBarT00NBZWhrwOXpdRPYLOYHKVU3Rl+FA9xDw/wYfoWvrr+JSfHRGn/ENMmQFEdckAbPauKaQMrZD2kz+PRrhq56eWnCuVQPcaz/jroVT8qQEgkg2IsNy+DwfLOIqm8IySEpxnQ5wN/KvsQJc2wXDQNf9F5kvWwjoqSSP0qJS+oPRXET+zJb+WTk2y5M6AYoC9NodwsC4NwIDAQAB";
        // string BrhCode = "039001";

        //生产环境
        string BoxRequestUrl = "https://openapi.iboxpay.com/api";
        string BoxAppId = "AP5879017839106039808";
        string BoxAppSecret = "DGtftIyl6R3nzwPr5YuV5fnmkfwufXRj";
        string BoxPublicKey = "MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAjmjoQirIYZBD9Qon2HkF4j/NAINXtJ7Lzq/WXxTF7t7mg7LNARt0+ZZaeWx8caq2fv5zdsGyyoInL23cBtDI5KmFfK69iA0ygQMK0WbiKqsUB1OpPbT3+9zLuadIJAznjA223lY6CIjTpdLZhaRjImNVqc60bdkx6YsQcA+xW+3r1JH4PPHb7yBEbkKIX8OhyX7U4p0TkbDkAobbjHr5YB9gmYLoSFJMOPfTtSExkv7/Y7IVR9poZAHcr3teFoAiXW3RzxelRtnXxIkl/6AUOKoL5fhr/UTUN+Q18uzNljYWr6SwnTI3EmtzgykaewWtZvV85Xdhe/BjiQ5Xor7YbwIDAQAB";
        string BrhCode = "039034";


        /// <summary>
        /// 新创建商户
        /// </summary>
        /// <param name="request"></param>
        /// <returns></returns>
        public string AddNewMerchant(AddNewMerchant request)
        {
            function.WriteLog(DateTime.Now.ToString(), "好哒新创建商户");

            string req = Newtonsoft.Json.JsonConvert.SerializeObject(request);
            function.WriteLog(req, "好哒新创建商户");
            Dictionary<string, string> headdic = GetHeader(req);
            string head = Newtonsoft.Json.JsonConvert.SerializeObject(headdic);
            function.WriteLog("请求头\n" + head, "好哒新创建商户");
            function.WriteLog("请求参数\n" + req, "好哒新创建商户");
            function.WriteLog("请求地址：" + BoxRequestUrl + "/api/inst/mcht/new_create_mcht", "好哒新创建商户");
            string result = PostWebRequest(BoxRequestUrl + "/api/inst/mcht/new_create_mcht", req, headdic);
            function.WriteLog("返回\n" + result + "\n\n", "好哒新创建商户");

            return result;
        }

        /// <summary>
        /// 查询商户审核状态
        /// </summary>
        /// <param name="instId">机构编号</param>
        /// <param name="mchtNo">收款商户号</param>
        /// <returns></returns>
        public string QueryMerchantStatus(string instId, string mchtNo)
        {
            function.WriteLog(DateTime.Now.ToString(), "好哒查询商户审核状态");
            Dictionary<string, object> reqdic = new Dictionary<string, object>();
            reqdic.Add("instId", instId);
            reqdic.Add("mchtNo", mchtNo);

            string req = Newtonsoft.Json.JsonConvert.SerializeObject(reqdic);
            function.WriteLog(req, "好哒查询商户审核状态");
            Dictionary<string, string> headdic = GetHeader(req);
            string head = Newtonsoft.Json.JsonConvert.SerializeObject(headdic);
            function.WriteLog("请求头\n" + head, "好哒查询商户审核状态");
            function.WriteLog("请求参数\n" + req, "好哒查询商户审核状态");
            function.WriteLog("请求地址：" + BoxRequestUrl + "/api/inst/mcht/query_mcht_audit", "好哒查询商户审核状态");
            string result = PostWebRequest(BoxRequestUrl + "/api/inst/mcht/query_mcht_audit", req, headdic);
            function.WriteLog("返回\n" + result + "\n\n", "好哒查询商户审核状态");

            return result;
        }

        /// <summary>
        /// 微信公众号和小程序支付接口
        /// </summary>
        /// <param name="mchtNo">盒子的商户编号</param>
        /// <param name="storeNo">盒子的门店编码</param>
        /// <param name="outOrderNo">商户订单号</param>
        /// <param name="transAmount">交易金额，单位：分</param>
        /// <param name="callbackUrl">交易完成之后，商户接收交易结果通知的地址</param>
        /// <param name="subOpenId">用户子标识</param>
        /// <param name="confirmCode">支付确认码</param>
        /// <param name="subAppId">公众号或者小程序appId</param>
        /// <param name="subAppIdType">对应的类型，默认为公众号， SUBSCRIPTION: 公众号 MINI_PROGRAM: 小程序</param>
        /// <param name="ledgerModel">分账类型:1不分账 2分账,注意只有开通了分账才能传这个字段</param>
        /// <returns></returns>
        public string WeChatPay(string mchtNo, string storeNo, string outOrderNo, string transAmount, string callbackUrl, string subOpenId, string confirmCode, string subAppId, string subAppIdType, string ledgerModel)
        {
            function.WriteLog(DateTime.Now.ToString(), "好哒微信公众号和小程序支付");
            Dictionary<string, object> reqdic = new Dictionary<string, object>();
            reqdic.Add("mchtNo", mchtNo); //盒子的商户编号
            reqdic.Add("storeNo", storeNo); //盒子的门店编码	
            reqdic.Add("outOrderNo", outOrderNo); //商户订单号
            reqdic.Add("transAmount", transAmount); //交易金额，单位：分
            reqdic.Add("callbackUrl", callbackUrl); //交易完成之后，商户接收交易结果通知的地址	
            reqdic.Add("subOpenId", subOpenId); //用户子标识
            reqdic.Add("confirmCode", confirmCode); //支付确认码，由4位纯数字组成，每次请求时随机生成	
            reqdic.Add("subAppId", subAppId); //公众号或者小程序appId	
            reqdic.Add("subAppIdType", subAppIdType); //subAppId 对应的类型，默认为公众号， SUBSCRIPTION: 公众号 MINI_PROGRAM: 小程序

            string req = Newtonsoft.Json.JsonConvert.SerializeObject(reqdic);
            function.WriteLog(req, "好哒微信公众号和小程序支付");
            Dictionary<string, string> headdic = GetHeader(req);
            string head = Newtonsoft.Json.JsonConvert.SerializeObject(headdic);
            function.WriteLog("请求头\n" + head, "好哒微信公众号和小程序支付");
            function.WriteLog("请求参数\n" + req, "好哒微信公众号和小程序支付");
            function.WriteLog("请求地址：" + BoxRequestUrl + "/hzg/v2/unitedtrade/wechat_js_pay", "好哒微信公众号和小程序支付");
            string result = PostWebRequest(BoxRequestUrl + "/hzg/v2/unitedtrade/wechat_js_pay", req, headdic);
            function.WriteLog("返回\n" + result + "\n\n", "好哒微信公众号和小程序支付");

            return result;
        }

        /// <summary>
        /// 支付宝服务窗支付接口
        /// </summary>
        /// <param name="mchtNo">盒子的商户编号</param>
        /// <param name="storeNo">盒子的门店编码</param>
        /// <param name="outOrderNo">商户订单号</param>
        /// <param name="transAmount">交易金额，单位：分</param>
        /// <param name="subOpenId">支付宝用户标识</param>
        /// <param name="confirmCode">支付确认码，由4位纯数字组成，每次请求时随机生成</param>
        /// <returns></returns>
        public string Alipay(string mchtNo, string storeNo, string outOrderNo, string transAmount, string subOpenId, string confirmCode)
        {
            function.WriteLog(DateTime.Now.ToString(), "好哒支付宝服务窗支付");
            Dictionary<string, object> reqdic = new Dictionary<string, object>();
            reqdic.Add("mchtNo", mchtNo); //盒子的商户编号
            reqdic.Add("storeNo", storeNo); //盒子的门店编码	
            reqdic.Add("outOrderNo", outOrderNo); //商户订单号
            reqdic.Add("transAmount", transAmount); //交易金额，单位：分	
            reqdic.Add("subOpenId", subOpenId); //支付宝用户标识	
            reqdic.Add("confirmCode", confirmCode); //支付确认码，由4位纯数字组成，每次请求时随机生成

            string req = Newtonsoft.Json.JsonConvert.SerializeObject(reqdic);
            function.WriteLog(req, "好哒支付宝服务窗支付");
            Dictionary<string, string> headdic = GetHeader(req);
            string head = Newtonsoft.Json.JsonConvert.SerializeObject(headdic);
            function.WriteLog("请求头\n" + head, "好哒支付宝服务窗支付");
            function.WriteLog("请求参数\n" + req, "好哒支付宝服务窗支付");
            function.WriteLog("请求地址：" + BoxRequestUrl + "/hzg/v2/unitedtrade/wechat_js_pay", "好哒支付宝服务窗支付");
            string result = PostWebRequest(BoxRequestUrl + "/hzg/v2/unitedtrade/wechat_js_pay", req, headdic);
            function.WriteLog("返回\n" + result + "\n\n", "好哒支付宝服务窗支付");

            return result;
        }

        /// <summary>
        /// 聚合支付退款接口
        /// </summary>
        /// <param name="mchtNo">盒子的商户编号</param>
        /// <param name="storeNo">盒子的门店编号</param>
        /// <param name="outRefundNo">商户退款订单号</param>
        /// <param name="outOrderNo">商户支付订单号</param>
        /// <param name="refundAmount">退款金额，单位：分</param>
        /// <returns></returns>
        public string AggregatedPayRefund(string mchtNo, string storeNo, string outRefundNo, string outOrderNo, string refundAmount)
        {
            function.WriteLog(DateTime.Now.ToString(), "好哒聚合支付退款");
            Dictionary<string, object> reqdic = new Dictionary<string, object>();

            reqdic.Add("mchtNo", mchtNo); // 盒子的商户编号	
            reqdic.Add("storeNo", storeNo); // 盒子的门店编号	
            reqdic.Add("outRefundNo", outRefundNo); //32 商户退款订单号	
            reqdic.Add("outOrderNo", outOrderNo); // 商户支付订单号	
            reqdic.Add("refundAmount", refundAmount); //10 退款金额，单位：分

            string req = Newtonsoft.Json.JsonConvert.SerializeObject(reqdic);
            function.WriteLog(req, "好哒聚合支付退款");
            Dictionary<string, string> headdic = GetHeader(req);
            string head = Newtonsoft.Json.JsonConvert.SerializeObject(headdic);
            function.WriteLog("请求头\n" + head, "好哒聚合支付退款");
            function.WriteLog("请求参数\n" + req, "好哒聚合支付退款");
            function.WriteLog("请求地址：" + BoxRequestUrl + "/hzg/v2/unitedtrade/refund", "好哒聚合支付退款");
            string result = PostWebRequest(BoxRequestUrl + "/hzg/v2/unitedtrade/refund", req, headdic);
            function.WriteLog("返回\n" + result + "\n\n", "好哒聚合支付退款");

            return result;
        }

        /// <summary>
        /// 开通分账功能
        /// </summary>
        /// <param name="mchtNo">慧掌柜商户号(进件接口返回的outMchtNo字段)</param>
        /// <param name="storeNo">慧掌柜门店号</param>
        /// <returns></returns>
        public string OpenDivideAccounts(string mchtNo, string storeNo)
        {
            function.WriteLog(DateTime.Now.ToString(), "好哒开通分账");
            Dictionary<string, object> reqdic = new Dictionary<string, object>();

            reqdic.Add("mchtNo", mchtNo); // 慧掌柜商户号	
            reqdic.Add("storeNo", storeNo); // 慧掌柜门店号	

            string req = Newtonsoft.Json.JsonConvert.SerializeObject(reqdic);
            function.WriteLog(req, "好哒开通分账");
            Dictionary<string, string> headdic = GetHeader(req);
            string head = Newtonsoft.Json.JsonConvert.SerializeObject(headdic);
            function.WriteLog("请求头\n" + head, "好哒开通分账");
            function.WriteLog("请求参数\n" + req, "好哒开通分账");
            function.WriteLog("请求地址：" + BoxRequestUrl + "/v3/hzg/part/mcht/reg", "好哒开通分账");
            string result = PostWebRequest(BoxRequestUrl + "/v3/hzg/part/mcht/reg", req, headdic);
            function.WriteLog("返回\n" + result + "\n\n", "好哒开通分账");

            return result;
        }

        /// <summary>
        /// 添加分账接收方账户
        /// </summary>
        /// <param name="request"></param>
        /// <returns></returns>
        public string AddOpenDivideAccounts(AddOpenDivideAccounts request)
        {
            function.WriteLog(DateTime.Now.ToString(), "好哒添加分账接收方账户");

            string req = Newtonsoft.Json.JsonConvert.SerializeObject(request);
            function.WriteLog(req, "好哒添加分账接收方账户");
            Dictionary<string, string> headdic = GetHeader(req);
            string head = Newtonsoft.Json.JsonConvert.SerializeObject(headdic);
            function.WriteLog("请求头\n" + head, "好哒添加分账接收方账户");
            function.WriteLog("请求参数\n" + req, "好哒添加分账接收方账户");
            function.WriteLog("请求地址：" + BoxRequestUrl + "/api/inst/mcht/new_create_mcht", "好哒添加分账接收方账户");
            string result = PostWebRequest(BoxRequestUrl + "/api/inst/mcht/new_create_mcht", req, headdic);
            function.WriteLog("返回\n" + result + "\n\n", "好哒添加分账接收方账户");

            return result;
        }
        /// <summary>
        /// 订单分账申请
        /// </summary>
        /// <param name="request"></param>
        /// <returns></returns>
        /// 
        public string OrderDivideAccounts(OrderDivideAccounts request)
        {
            function.WriteLog(DateTime.Now.ToString(), "好哒订单分账申请");

            string req = Newtonsoft.Json.JsonConvert.SerializeObject(request);
            function.WriteLog(req, "好哒订单分账申请");
            Dictionary<string, string> headdic = GetHeader(req);
            string head = Newtonsoft.Json.JsonConvert.SerializeObject(headdic);
            function.WriteLog("请求头\n" + head, "好哒订单分账申请");
            function.WriteLog("请求参数\n" + req, "好哒订单分账申请");
            function.WriteLog("请求地址：" + BoxRequestUrl + "/api/inst/mcht/new_create_mcht", "好哒订单分账申请");
            string result = PostWebRequest(BoxRequestUrl + "/api/inst/mcht/new_create_mcht", req, headdic);
            function.WriteLog("返回\n" + result + "\n\n", "好哒订单分账申请");

            return result;
        }

        public Dictionary<string, string> GetHeader(string req)
        {
            Dictionary<string, string> headdic = new Dictionary<string, string>();
            string timestamp = DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss");
            headdic.Add("appid", BoxAppId);//开发者id
            headdic.Add("appsecret", BoxAppSecret);//开发者密码
            headdic.Add("X-Up-AppId", BoxAppId);
            headdic.Add("X-Timestamp", timestamp);
            headdic.Add("X-Sign-Type", "SHA-256");
            headdic.Add("X-Sign", SHA256Sign(timestamp + BoxAppSecret + req));
            return headdic;
        }

        public string SHA256Sign(string toSignStr)
        {
            byte[] toSignByte = Encoding.UTF8.GetBytes(toSignStr);
            SHA256 sha256 = SHA256.Create();
            byte[] signByte = sha256.ComputeHash(toSignByte);
            string sign = Convert.ToBase64String(signByte);
            return sign;
        }

        public bool VerifySign(string toSignStr, string signStr)
        {
            byte[] toSignByte = Encoding.Default.GetBytes(toSignStr);
            byte[] signByte = Convert.FromBase64String(signStr);
            var toKey = Convert.FromBase64String(BoxPublicKey);
            var rsaroot = RSA.Create();
            rsaroot.ImportSubjectPublicKeyInfo(toKey, out _);
            var publicKeyParameters = rsaroot.ExportParameters(false);
            using (var rsa = RSA.Create())
            {
                rsa.ImportParameters(publicKeyParameters);
                var sha256 = SHA256.Create();
                var hash = sha256.ComputeHash(toSignByte);
                return rsa.VerifyHash(hash, signByte, HashAlgorithmName.SHA256, RSASignaturePadding.Pkcs1);
            }
        }

        public string SignData(string toSignStr)
        {
            byte[] toSignByte = Encoding.UTF8.GetBytes(toSignStr);
            var toKey = Convert.FromBase64String(BoxPublicKey);
            var rsaroot = RSA.Create();
            rsaroot.ImportSubjectPublicKeyInfo(toKey, out _);
            var publicKeyParameters = rsaroot.ExportParameters(false);
            using (var rsa = RSA.Create())
            {
                rsa.ImportParameters(publicKeyParameters);
                var sha256 = SHA256.Create();
                var hash = sha256.ComputeHash(toSignByte);
                byte[] endByte = rsa.SignData(toSignByte, HashAlgorithmName.SHA256, RSASignaturePadding.Pkcs1);
                return Convert.ToBase64String(endByte);
            }
        }

        private string PostWebRequest(string postUrl, string paramData, Dictionary<string, string> headers)
        {
            string ret = string.Empty;
            try
            {
                function.WriteLog(DateTime.Now.ToString(), "请求开店宝API日志");
                function.WriteLog(postUrl, "请求开店宝API日志");
                function.WriteLog(paramData, "请求开店宝API日志");
                byte[] postData = System.Text.Encoding.UTF8.GetBytes(paramData);
                // 设置提交的相关参数 
                System.Net.HttpWebRequest request = System.Net.WebRequest.Create(postUrl) as System.Net.HttpWebRequest;
                System.Text.Encoding myEncoding = System.Text.Encoding.UTF8;
                request.Method = "POST";
                request.KeepAlive = false;
                request.AllowAutoRedirect = true;
                request.ContentType = "application/json";
                foreach (string key in headers.Keys)
                {
                    request.Headers.Add(key, headers[key]);
                }
                request.UserAgent = "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; .NET CLR 2.0.50727; .NET CLR  3.0.04506.648; .NET CLR 3.5.21022; .NET CLR 3.0.4506.2152; .NET CLR 3.5.30729)";

                request.ContentLength = postData.Length;

                // 提交请求数据 
                System.IO.Stream outputStream = request.GetRequestStream();
                outputStream.Write(postData, 0, postData.Length);
                outputStream.Close();
                System.Net.HttpWebResponse response;
                System.IO.Stream responseStream;
                System.IO.StreamReader reader;
                string srcString;
                response = request.GetResponse() as System.Net.HttpWebResponse;
                responseStream = response.GetResponseStream();
                reader = new System.IO.StreamReader(responseStream, System.Text.Encoding.UTF8);
                srcString = reader.ReadToEnd();
                ret = srcString;   //返回值赋值
                reader.Close();
                function.WriteLog(srcString, "请求开店宝API日志");
            }
            catch (System.Net.WebException ex)
            {
                System.Net.HttpWebResponse response = (System.Net.HttpWebResponse)ex.Response;
                System.IO.Stream myResponseStream = response.GetResponseStream();
                //获取响应内容
                System.IO.StreamReader myStreamReader = new System.IO.StreamReader(myResponseStream);
                ret = myStreamReader.ReadToEnd();
                myResponseStream.Close();
            }
            catch (Exception ex)
            {
                ret = "fail";
                function.WriteLog(DateTime.Now.ToString() + "\r\n" + ex.ToString(), "请求开店宝API异常");
            }
            return ret;
        }

        /// <summary>
        /// 获取文件令牌接口
        /// </summary>
        /// <param name="fileName">文件名</param>
        /// <param name="action">操作类型 0 上传图片</param>
        /// <returns></returns>
        public string GetToken(string fileName, string action)
        {
            function.WriteLog(DateTime.Now.ToString(), "好哒获取文件令牌接口");
            Dictionary<string, object> reqdic = new Dictionary<string, object>();

            reqdic.Add("fileName", fileName); // 文件名	
            reqdic.Add("action", action); // 操作类型 0 上传图片

            string req = Newtonsoft.Json.JsonConvert.SerializeObject(reqdic);
            function.WriteLog(req, "好哒获取文件令牌接口");
            Dictionary<string, string> headdic = GetHeader(req);
            string head = Newtonsoft.Json.JsonConvert.SerializeObject(headdic);
            function.WriteLog("请求头\n" + head, "好哒获取文件令牌接口");
            function.WriteLog("请求参数\n" + req, "好哒获取文件令牌接口");
            function.WriteLog("请求地址：" + BoxRequestUrl + "/api/auth/v1/get_file_token", "好哒获取文件令牌接口");
            string result = PostWebRequest(BoxRequestUrl + "/api/auth/v1/get_file_token", req, headdic);
            function.WriteLog("返回\n" + result + "\n\n", "好哒获取文件令牌接口");

            return result;
        }

        /// <summary>
        /// 执行带文件上传的HTTP POST请求。
        /// </summary>
        /// <param name="url">请求地址</param>
        /// <param name="textParams">请求文本参数</param>
        /// <param name="fileParams">请求文件参数</param>
        /// <param name="charset">编码字符集</param>
        /// <returns>HTTP响应</returns>
        public string DoPost(string url, string token, IDictionary<string, string> textParams, IDictionary<string, FileItem> fileParams, string charset = "utf-8")
        {
            // 如果没有文件参数，则走普通POST请求
            if (fileParams == null || fileParams.Count == 0)
            {
                return "";
            }

            string boundary = DateTime.Now.Ticks.ToString("X"); // 随机分隔线

            HttpWebRequest req = GetWebRequest(url, "POST");
            req.Headers.Add("X-File-Token", token);
            req.ContentType = "multipart/form-data;charset=" + charset + ";boundary=" + boundary;

            Stream reqStream = req.GetRequestStream();
            byte[] itemBoundaryBytes = Encoding.GetEncoding(charset).GetBytes("\r\n--" + boundary + "\r\n");
            byte[] endBoundaryBytes = Encoding.GetEncoding(charset).GetBytes("\r\n--" + boundary + "--\r\n");

            // 组装文本请求参数
            string textTemplate = "Content-Disposition:form-data;name=\"{0}\"\r\nContent-Type:text/plain\r\n\r\n{1}";
            IEnumerator<KeyValuePair<string, string>> textEnum = textParams.GetEnumerator();
            while (textEnum.MoveNext())
            {
                string textEntry = string.Format(textTemplate, textEnum.Current.Key, textEnum.Current.Value);
                byte[] itemBytes = Encoding.GetEncoding(charset).GetBytes(textEntry);
                reqStream.Write(itemBoundaryBytes, 0, itemBoundaryBytes.Length);
                reqStream.Write(itemBytes, 0, itemBytes.Length);
            }

            // 组装文件请求参数
            string fileTemplate = "Content-Disposition:form-data;name=\"{0}\";filename=\"{1}\"\r\nContent-Type:{2}\r\n\r\n";
            IEnumerator<KeyValuePair<string, FileItem>> fileEnum = fileParams.GetEnumerator();
            while (fileEnum.MoveNext())
            {
                string key = fileEnum.Current.Key;
                FileItem fileItem = fileEnum.Current.Value;
                string fileEntry = string.Format(fileTemplate, key, fileItem.GetFileName(), fileItem.GetMimeType());
                byte[] itemBytes = Encoding.GetEncoding(charset).GetBytes(fileEntry);
                reqStream.Write(itemBoundaryBytes, 0, itemBoundaryBytes.Length);
                reqStream.Write(itemBytes, 0, itemBytes.Length);

                byte[] fileBytes = fileItem.GetContent();
                reqStream.Write(fileBytes, 0, fileBytes.Length);
            }

            reqStream.Write(endBoundaryBytes, 0, endBoundaryBytes.Length);
            reqStream.Close();

            HttpWebResponse rsp = (HttpWebResponse)req.GetResponse();
            Encoding encoding = Encoding.GetEncoding(rsp.CharacterSet);
            return GetResponseAsString(rsp, encoding);
        }

        public HttpWebRequest GetWebRequest(string url, string method)
        {
            HttpWebRequest req = (HttpWebRequest)WebRequest.Create(url);
            req.ServicePoint.Expect100Continue = false;
            req.Method = method;
            req.KeepAlive = true;
            req.Timeout = 100000;
            return req;
        }

        /// <summary>
        /// 把响应流转换为文本。
        /// </summary>
        /// <param name="rsp">响应流对象</param>
        /// <param name="encoding">编码方式</param>
        /// <returns>响应文本</returns>
        public string GetResponseAsString(HttpWebResponse rsp, Encoding encoding)
        {
            StringBuilder result = new StringBuilder();
            Stream stream = null;
            StreamReader reader = null;

            try
            {
                // 以字符流的方式读取HTTP响应
                stream = rsp.GetResponseStream();
                reader = new StreamReader(stream, encoding);

                // 按字符读取并写入字符串缓冲
                int ch = -1;
                while ((ch = reader.Read()) > -1)
                {
                    // 过滤结束符
                    char c = (char)ch;
                    if (c != '\0')
                    {
                        result.Append(c);
                    }
                }
            }
            finally
            {
                // 释放资源
                if (reader != null) reader.Close();
                if (stream != null) stream.Close();
                if (rsp != null) rsp.Close();
            }

            return result.ToString();
        }

        #endregion

    }
}