//using Newtonsoft.Json.Linq;
//using System;
//using System.Collections.Generic;
//using System.IO;
//using System.Linq;
//using System.Net;
//using System.Text;
//using System.Threading.Tasks;
//using System.Web;
//using Newtonsoft.Json;
//using System.Net.Http;

//namespace BPASmartClient.Http
//{
//    public class APIHelper
//    {

//        private volatile static APIHelper _Instance;
//        public static APIHelper GetInstance => _Instance ?? (_Instance = new APIHelper());
//        private APIHelper() { }

//        /// <summary>
//        /// POST 数据请求
//        /// </summary>
//        /// <param name="url">地址</param>
//        /// <param name="data">参数数据</param>
//        /// <param name="head">请求头</param>
//        /// <returns></returns>
//        public string PostData(string url, string data, string head)
//        {
//            byte[] b = Encoding.UTF8.GetBytes(data);//把字符串转换为二进制
//            HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);
//            request.Proxy = null;
//            request.ContentType = "application/json";
//            request.Method = "POST"; //设置请求方法
//            request.ContentLength = b.Length; //设置长度
//            request.Headers["Authorize"] = head;
//            Stream postStream = request.GetRequestStream(); //requst流
//            postStream.Write(b, 0, b.Length); //写入POST数据，二进制类型的
//            postStream.Close(); //关闭
//            HttpWebResponse response = (HttpWebResponse)request.GetResponse(); //获取response
//            Stream stream = response.GetResponseStream(); // 得到response响应流
//            StreamReader sr = new StreamReader(stream);
//            string str = sr.ReadToEnd(); //读取流

//            sr.Close();
//            stream.Close();
//            return str;
//        }

//        public string GetData(string url, string head)
//        {
//            HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);
//            request.Method = "GET";
//            request.Accept = "text/html, application/xhtml+xml, */*";
//            request.ContentType = "application/json";
//            request.Headers["Authorize"] = head;
//            byte[] buffer = Encoding.UTF8.GetBytes(head);
//            request.ContentLength = buffer.Length;
//            request.GetRequestStream().Write(buffer, 0, buffer.Length);
//            HttpWebResponse response = (HttpWebResponse)request.GetResponse();
//            using (StreamReader myStreamReader = new StreamReader(response.GetResponseStream(), Encoding.UTF8))
//            {
//                return myStreamReader.ReadToEnd();
//            }
//        }

//        public string HttpRequest(string url, string head, object data, RequestType requestType)
//        {
//            if (requestType == RequestType.POST)
//            {
//                return PostData(url, JsonConvert.SerializeObject(data), head);
//            }
//            else
//            {
//                StringBuilder sb = new StringBuilder();
//                sb.Append("?");
//                foreach (System.Reflection.PropertyInfo p in data.GetType().GetProperties())
//                {
//                    if (sb.ToString().Last() != '?')
//                    {
//                        sb.Append("&");
//                    }
//                    sb.Append(p.Name);
//                    sb.Append("=");
//                    sb.Append(p.GetValue(data));
//                }
//                return GetData(url + sb.ToString(), head);
//            }
//        }

//    }

//    public enum RequestType
//    {
//        POST,
//        PUT,
//        DELETE,
//        GET
//    }
//}