httpRequest(调用接口)

using ICSharpCode.SharpZipLib.GZip;
using ICSharpCode.SharpZipLib.Zip.Compression.Streams;
using Newtonsoft.Json;
using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.IO;
using System.Net;
using System.Text;
using System.Threading;

namespace SCB.OrderSorting.BLL.Common
{
public class HttpHelper
{
private string userAgent = "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.31 (KHTML, like Gecko) Chrome/26.0.1410.64 Safari/537.31";//"Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.2; Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1) ; .NET CLR 1.1.4322; .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)";
Encoding WebEncoding = Encoding.UTF8;

    public HttpHelper() { }
    public HttpHelper(Encoding _encoding)
    {
        WebEncoding = _encoding;
    }

    /// <summary>
    /// 处理网络连接
    /// </summary>
    /// <param name="Url">Url连接</param>
    /// <param name="PostData">参数</param>
    /// <param name="Method">访问类型（GET/POST）</param>
    /// <param name="select">数据访问类型（select/update/insert/delete）</param>
    /// <returns></returns>
    public string QueryData(string Url, string PostData, string Method, SelectType select = SelectType.Select, string guid = null)
    {
        var begTime = DateTime.Now;

        int TryCount = 0;
        reTry:
        try
        {
            HttpWebRequest httpRequest;

            if (Method.ToLower() == "post")
            {
                httpRequest = (HttpWebRequest)HttpWebRequest.Create(Url);
            }
            else
            {
                if (string.IsNullOrEmpty(PostData))
                {
                    httpRequest = (HttpWebRequest)HttpWebRequest.Create(Url);
                }
                else
                {
                    httpRequest = (HttpWebRequest)HttpWebRequest.Create(Url + "?" + PostData.Trim());
                }

            }

            httpRequest.Method = Method.ToUpper();
            //httpRequest.CookieContainer = cc;
            // httpRequest.Headers.Set("Accept-Language", "en-us");
            if (Method.ToLower() == "post")
            {
                httpRequest.ContentLength = PostData.Length;
            }
            //httpRequest.Timeout = 60000;
            httpRequest.ContentType = "application/x-www-form-urlencoded";
            //httpRequest.Headers.Add("UA-CPU", "x86");
            httpRequest.Accept = "*/*";
            httpRequest.Headers.Add("Accept-Encoding", "gzip,deflate,sdch");
            //httpRequest.Headers.Add("Accept-Encoding", "deflate,sdch");
            httpRequest.UserAgent = userAgent;
            if (!Url.Contains("FeesBiling"))
            {
                httpRequest.AutomaticDecompression = DecompressionMethods.GZip;
            }
            //httpRequest.KeepAlive = true;
            //httpRequest.AllowWriteStreamBuffering = true;

            if (Method.ToLower() == "post")
            {
                //Encoding encoding = Encoding.GetEncoding("utf-8");
                byte[] bytesToPost = WebEncoding.GetBytes(PostData);
                httpRequest.ContentLength = bytesToPost.Length;
                Stream requestStream = httpRequest.GetRequestStream();
                requestStream.Write(bytesToPost, 0, bytesToPost.Length);
                requestStream.Close();
            }
            HttpWebResponse response = (HttpWebResponse)httpRequest.GetResponse();

            Stream responseStream = Gzip(response);

            //response.Cookies = cc.GetCookies(httpRequest.RequestUri);
            StreamReader sr = new StreamReader(response.GetResponseStream(), WebEncoding);
            string reStr = sr.ReadToEnd();
            sr.Close();
            response.Close();

            //日志
            TimeSpan a = DateTime.Now - begTime;
            if (a.Milliseconds > 500)
            {
                SaveErrLogHelper.SaveErrorLog(
string.Format("运行时间：{0}-{1}.请求方式：{2},共耗时{3}毫秒", begTime.ToString("mm:ss.ffffzzz"), DateTime.Now.ToString("mm:ss.ffffzzz"), Method, a), string.Format("url:{0}\r\ndata:{1}", Url, PostData));

            }
            return reStr;
        }
        catch (Exception ex)
        {
            if (!string.IsNullOrEmpty(guid))
            {
                SaveErrLogHelper.ErrorMsgLog[guid] = ex.Message;
            }
            TryCount++;
            if (TryCount < 2 && select == SelectType.Select)
            {
                Thread.CurrentThread.Join(500);
                goto reTry;
            }
            else
            {
                SaveErrLogHelper.SaveErrorLog(string.Format("Url={0},PostData={1},Method={2},select={3}", Url, PostData, Method, select), ex.ToString());
                return string.Empty;
            }
        }

    }
    public string QueryData(string Url, string PostData, string Method, Dictionary<string,string> headData, SelectType select = SelectType.Select, string guid = null)
    {
        var begTime = DateTime.Now;

        int TryCount = 0;
        reTry:
        try
        {
            HttpWebRequest httpRequest;

            if (Method.ToLower() == "post")
            {
                httpRequest = (HttpWebRequest)HttpWebRequest.Create(Url);
            }
            else
            {
                if (string.IsNullOrEmpty(PostData))
                {
                    httpRequest = (HttpWebRequest)HttpWebRequest.Create(Url);
                }
                else
                {
                    httpRequest = (HttpWebRequest)HttpWebRequest.Create(Url + "?" + PostData.Trim());
                }

            }

            httpRequest.Method = Method.ToUpper();
            //httpRequest.CookieContainer = cc;
            // httpRequest.Headers.Set("Accept-Language", "en-us");
            if (Method.ToLower() == "post")
            {
                httpRequest.ContentLength = PostData.Length;
            }
            //httpRequest.Timeout = 60000;
            httpRequest.ContentType = "application/x-www-form-urlencoded";
            //httpRequest.Headers.Add("UA-CPU", "x86");
            httpRequest.Accept = "*/*";
            httpRequest.Headers.Add("Accept-Encoding", "gzip,deflate,sdch");
            foreach(var head in headData)
            {
                httpRequest.Headers.Add(head.Key, head.Value);
            }
            //httpRequest.Headers.Add("Accept-Encoding", "deflate,sdch");
            httpRequest.UserAgent = userAgent;
            if (!Url.Contains("FeesBiling"))
            {
                httpRequest.AutomaticDecompression = DecompressionMethods.GZip;
            }
            //httpRequest.KeepAlive = true;
            //httpRequest.AllowWriteStreamBuffering = true;

            if (Method.ToLower() == "post")
            {
                //Encoding encoding = Encoding.GetEncoding("utf-8");
                byte[] bytesToPost = WebEncoding.GetBytes(PostData);
                httpRequest.ContentLength = bytesToPost.Length;
                Stream requestStream = httpRequest.GetRequestStream();
                requestStream.Write(bytesToPost, 0, bytesToPost.Length);
                requestStream.Close();
            }
            HttpWebResponse response = (HttpWebResponse)httpRequest.GetResponse();

            Stream responseStream = Gzip(response);

            //response.Cookies = cc.GetCookies(httpRequest.RequestUri);
            StreamReader sr = new StreamReader(response.GetResponseStream(), WebEncoding);
            string reStr = sr.ReadToEnd();
            sr.Close();
            response.Close();

            //日志
            TimeSpan a = DateTime.Now - begTime;
            if (a.Milliseconds > 500)
            {
                SaveErrLogHelper.SaveErrorLog(
string.Format("运行时间：{0}-{1}.请求方式：{2},共耗时{3}毫秒", begTime.ToString("mm:ss.ffffzzz"), DateTime.Now.ToString("mm:ss.ffffzzz"), Method, a), string.Format("url:{0}\r\ndata:{1}", Url, PostData));

            }
            return reStr;
        }
        catch (Exception ex)
        {
            if (!string.IsNullOrEmpty(guid))
            {
                SaveErrLogHelper.ErrorMsgLog[guid] = ex.Message;
            }
            TryCount++;
            if (TryCount < 300 && select == SelectType.Select)
            {
                Thread.CurrentThread.Join(500);
                goto reTry;
            }
            else
            {
                SaveErrLogHelper.SaveErrorLog(string.Format("Url={0},PostData={1},Method={2},select={3}", Url, PostData, Method, select), ex.ToString());
                return string.Empty;
            }
        }

    }
    private Stream Gzip(HttpWebResponse HWResp)
    {
        Stream stream1 = null;
        if (HWResp.ContentEncoding == "gzip")
        {
            stream1 = new GZipInputStream(HWResp.GetResponseStream());
        }
        else
        {
            if (HWResp.ContentEncoding == "deflate")
            {
                stream1 = new InflaterInputStream(HWResp.GetResponseStream());
            }
        }
        if (stream1 == null)
        {
            return HWResp.GetResponseStream();
        }

        return stream1;
    }

    public enum SelectType
    {
        Select = 0,
        Update = 1,
        Insert = 2,
        Delete = 3
    }

    /// <summary>
    /// 处理网络连接
    /// </summary>
    /// <param name="Url">Url连接</param>
    /// <param name="PostData">参数</param>
    /// <param name="Method">访问类型（GET/POST）</param>
    /// <param name="select">数据访问类型（select/update/insert/delete）</param>
    /// <returns></returns>
    public MemoryStream QueryDataStream(string Url, string PostData, string Method, SelectType select = SelectType.Select, string guid = null)
    {
        var begTime = DateTime.Now;
        //int TryCount = 0;
        try
        {
            HttpWebRequest httpRequest;

            if (Method.ToLower() == "post")
            {
                httpRequest = (HttpWebRequest)HttpWebRequest.Create(Url);
            }
            else
            {
                if (string.IsNullOrEmpty(PostData))
                {
                    httpRequest = (HttpWebRequest)HttpWebRequest.Create(Url);
                }
                else
                {
                    httpRequest = (HttpWebRequest)HttpWebRequest.Create(Url + "?" + PostData.Trim());
                }
            }
            httpRequest.Method = Method.ToUpper();
            if (Method.ToLower() == "post")
            {
                httpRequest.ContentLength = PostData.Length;
            }
            httpRequest.ContentType = "application/x-www-form-urlencoded";
            httpRequest.Accept = "*/*";
            httpRequest.Headers.Add("Accept-Encoding", "gzip,deflate,sdch");
            httpRequest.UserAgent = userAgent;
            if (!Url.Contains("FeesBiling"))
            {
                httpRequest.AutomaticDecompression = DecompressionMethods.GZip;
            }
            HttpWebResponse response = (HttpWebResponse)httpRequest.GetResponse();
            Stream stream = response.GetResponseStream();
            if (stream != null)
            {
                byte[] bytes = new byte[stream.Length];
                stream.Read(bytes, 0, bytes.Length);
                stream.Seek(0, SeekOrigin.Begin);
                stream.Dispose();
                response.Close();
                return new MemoryStream(bytes);
            }
        }
        catch (Exception)
        {
            return null;
        }
        return null;
    }

    internal T ReadStreamListFromBase64String<T>(string path)
    {
        using (StreamReader sr = new StreamReader(path, Encoding.UTF8))
        {
            return JsonConvert.DeserializeObject<T>(Encoding.Default.GetString(Convert.FromBase64String(sr.ReadToEnd())));
        }
    }

    internal void WriteStreamToBase64String(string path, object data)
    {
        using (StreamWriter sw = new StreamWriter(path, false, Encoding.UTF8))
        {
            sw.Write(Convert.ToBase64String(Encoding.Default.GetBytes(JsonConvert.SerializeObject(data))));
            sw.Flush();
        }
    }

    public T Post<T>(string url, object param) where T : class
    {
        var begTime = DateTime.Now;
        var json = JsonConvert.SerializeObject(param);
        var byteData = Encoding.UTF8.GetBytes(json);
        var httpRequest = (HttpWebRequest)WebRequest.Create(url);
        httpRequest.Method = "post";
        httpRequest.KeepAlive = false;
        httpRequest.ContentType = "application/json;charset=utf-8";
        httpRequest.ContentLength = byteData.Length;
        httpRequest.GetRequestStream().Write(byteData, 0, byteData.Length);
        //httpRequest.Timeout = 2 * 60 * 1000;
        var strResponse = string.Empty;
        TryMultiTime(() =>
        {
            var responseStream = httpRequest.GetResponse().GetResponseStream();
            if (responseStream == null) return;
            using (var reader = new StreamReader(responseStream, Encoding.UTF8))
            {
                strResponse = reader.ReadToEnd();
            }
        }, 150);
          //日志
            TimeSpan a = DateTime.Now - begTime;
            if (a.Milliseconds > 500)
            {
                SaveErrLogHelper.SaveErrorLog(
string.Format("运行时间：{0}-{1}.请求方式：{2},共耗时{3}毫秒", begTime.ToString("mm:ss.ffffzzz"), DateTime.Now.ToString("mm:ss.ffffzzz"), "Post", a), string.Format("url:{0}\r\ndata:{1}", url, json));

            }
        Debug.Write(strResponse);
        return JsonConvert.DeserializeObject<T>(strResponse);
    }

    private void TryMultiTime(Action act, int tryTimes, int interval = 2000)
    {
        var i = 0;
        while (true)
        {
            try
            {
                i++;
                act();
                break;
            }
            catch (Exception ex)
            {
                if (i >= tryTimes)
                {
                    SaveErrLogHelper.SaveErrorLog(string.Empty, ex.ToString());
                    throw new Exception("请求超时", ex);
                }
                Thread.Sleep(interval);
            }
        }
    }
}

}