【原创】标准HTTP请求工具类

 ?1 using System; ?2 using System.Collections.Generic; ?3 using System.IO; ?4 using System.IO.Compression; ?5 using System.Linq; ?6 using System.Net; ?7 using System.Net.Security; ?8 using System.Security.Cryptography.X509Certificates; ?9 using System.Text; 10 using System.Threading.Tasks; 11 ?12 namespace Common 13 { 14 ????public class HttpService 15 ????{ 16 ????????public static bool CheckValidationResult(object sender, X509Certificate certificate, X509Chain chain, SslPolicyErrors errors) 17 ????????{ 18 ????????????//直接确认，否则打不开 ????19 ????????????return true; 20 ????????} 21 ?22 ????????#region 1.处理http POST请求【XML格式、无解压】 23 ????????/// <summary> 24 ????????/// 处理http POST请求【XML格式、无解压】 25 ????????/// </summary> 26 ????????/// <param name="xml">请求参数</param> 27 ????????/// <param name="url">请求接口地址</param> 28 ????????/// <param name="timeout">设置超时时间</param> 29 ????????/// <returns>http POST成功后返回的数据，失败抛WebException异常</returns> 30 ????????public static string PostXMLRequest(string xml, string url, int timeout = 16) 31 ????????{ 32 ????????????System.GC.Collect();//垃圾回收，回收没有正常关闭的http连接 33 ?34 ????????????string result = "";//返回结果 35 ?36 ????????????HttpWebRequest request = null; 37 ????????????HttpWebResponse response = null; 38 ????????????Stream reqStream = null; 39 ?40 ????????????try 41 ????????????{ 42 ????????????????//设置最大连接数 43 ????????????????ServicePointManager.DefaultConnectionLimit = 200; 44 ????????????????//设置https验证方式 45 ????????????????if (url.StartsWith("https", StringComparison.OrdinalIgnoreCase)) 46 ????????????????{ 47 ????????????????????ServicePointManager.ServerCertificateValidationCallback = 48 ????????????????????????????new RemoteCertificateValidationCallback(CheckValidationResult); 49 ????????????????} 50 ?51 ????????????????/*************************************************************** 52 ????????????????* 下面设置HttpWebRequest的相关属性 53 ????????????????* ************************************************************/ 54 ????????????????request = (HttpWebRequest)WebRequest.Create(url); 55 ?56 ????????????????request.Method = "POST"; 57 ????????????????request.Timeout = timeout * 1000; 58 ?59 ????????????????//设置POST的数据类型和长度 60 ????????????????request.ContentType = "text/xml"; 61 ????????????????byte[] data = System.Text.Encoding.UTF8.GetBytes(xml); 62 ????????????????request.ContentLength = data.Length; 63 ?64 ????????????????//往服务器写入数据 65 ????????????????reqStream = request.GetRequestStream(); 66 ????????????????reqStream.Write(data, 0, data.Length); 67 ????????????????reqStream.Close(); 68 ?69 ????????????????//获取服务端返回 70 ????????????????response = (HttpWebResponse)request.GetResponse(); 71 ?72 ????????????????//获取服务端返回数据 73 ????????????????StreamReader sr = new StreamReader(response.GetResponseStream(), Encoding.UTF8); 74 ????????????????result = sr.ReadToEnd().Trim(); 75 ????????????????sr.Close(); 76 ????????????} 77 ????????????catch (System.Threading.ThreadAbortException e) 78 ????????????{ 79 ????????????????System.Threading.Thread.ResetAbort(); 80 ????????????} 81 ????????????catch (WebException e) 82 ????????????{ 83 ?84 ?85 ????????????} 86 ????????????catch (Exception e) 87 ????????????{ 88 ?89 ????????????} 90 ????????????finally 91 ????????????{ 92 ????????????????//关闭连接和流 93 ????????????????if (response != null) 94 ????????????????{ 95 ????????????????????response.Close(); 96 ????????????????} 97 ????????????????if (request != null) 98 ????????????????{ 99 ????????????????????request.Abort();100 ????????????????}101 ????????????}102 ????????????return result;103 ????????}104 ????????#endregion105 106 ????????#region 2.处理http GET请求【XML格式、无解压】107 ????????/// <summary>108 ????????/// 处理http GET请求【XML格式、无解压】109 ????????/// </summary>110 ????????/// <param name="url">请求的url地址</param>111 ????????/// <returns>http GET成功后返回的数据，失败抛WebException异常</returns>112 ????????public static string GetXMLRequest(string url)113 ????????{114 ????????????System.GC.Collect();115 ????????????string result = "";116 117 ????????????HttpWebRequest request = null;118 ????????????HttpWebResponse response = null;119 120 ????????????//请求url以获取数据121 ????????????try122 ????????????{123 ????????????????//设置最大连接数124 ????????????????ServicePointManager.DefaultConnectionLimit = 200;125 ????????????????//设置https验证方式126 ????????????????if (url.StartsWith("https", StringComparison.OrdinalIgnoreCase))127 ????????????????{128 ????????????????????ServicePointManager.ServerCertificateValidationCallback =129 ????????????????????????????new RemoteCertificateValidationCallback(CheckValidationResult);130 ????????????????}131 132 ????????????????/***************************************************************133 ????????????????* 下面设置HttpWebRequest的相关属性134 ????????????????* ************************************************************/135 ????????????????request = (HttpWebRequest)WebRequest.Create(url);136 137 ????????????????request.Method = "GET";138 139 ????????????????//获取服务器返回140 ????????????????response = (HttpWebResponse)request.GetResponse();141 142 ????????????????//获取HTTP返回数据143 ????????????????StreamReader sr = new StreamReader(response.GetResponseStream(), Encoding.UTF8);144 ????????????????result = sr.ReadToEnd().Trim();145 ????????????????sr.Close();146 ????????????}147 ????????????catch (System.Threading.ThreadAbortException e)148 ????????????{149 150 ????????????????System.Threading.Thread.ResetAbort();151 ????????????}152 ????????????catch (WebException e)153 ????????????{154 155 156 ????????????}157 158 ????????????finally159 ????????????{160 ????????????????//关闭连接和流161 ????????????????if (response != null)162 ????????????????{163 ????????????????????response.Close();164 ????????????????}165 ????????????????if (request != null)166 ????????????????{167 ????????????????????request.Abort();168 ????????????????}169 ????????????}170 ????????????return result;171 ????????}172 ????????#endregion173 174 ????????#region 3.处理http POST请求【可以解压】175 ????????/// <summary>176 ????????/// 处理http POST请求【可以解压】177 ????????/// </summary>178 ????????/// <param name="param">请求参数</param>179 ????????/// <param name="url">请求接口地址</param>180 ????????/// <param name="timeout">设置超时时间</param>181 ????????/// <returns>http POST成功后返回的数据，失败抛WebException异常</returns>182 ????????public static string Post(string param, string url, int timeout = 16)183 ????????{184 ????????????System.GC.Collect();//垃圾回收，回收没有正常关闭的http连接185 186 ????????????string result = "";//返回结果187 188 ????????????HttpWebRequest request = null;189 ????????????HttpWebResponse response = null;190 ????????????Stream reqStream = null;191 ????????????StreamReader sr = null;192 ????????????try193 ????????????{194 ????????????????//设置最大连接数195 ????????????????ServicePointManager.DefaultConnectionLimit = 200;196 197 ????????????????/***************************************************************198 ????????????????* 下面设置HttpWebRequest的相关属性199 ????????????????* ************************************************************/200 ????????????????request = (HttpWebRequest)WebRequest.Create(url);201 202 ????????????????request.Method = "POST";203 ????????????????request.Timeout = timeout * 1000;204 205 ????????????????//设置POST的数据类型206 ????????????????request.ContentType = "application/x-www-form-urlencoded;charset=UTF-8";207 208 ????????????????byte[] data = System.Text.Encoding.UTF8.GetBytes(param);209 210 ????????????????request.UserAgent = "Mozilla/4.0";211 ????????????????request.Headers.Add("Accept-Encoding", "gzip, deflate");212 213 ????????????????//设置POST的数据长度214 ????????????????request.ContentLength = data.Length;215 216 ????????????????//往服务器写入数据217 ????????????????reqStream = request.GetRequestStream();218 ????????????????reqStream.Write(data, 0, data.Length);219 ????????????????reqStream.Close();220 221 ????????????????//获取服务端返回222 ????????????????response = (HttpWebResponse)request.GetResponse();223 224 ????????????????//获取服务端返回数据225 ????????????????if (response.ContentEncoding.ToLower() == "gzip")//如果使用了GZip则先解压226 ????????????????{227 ????????????????????using (Stream streamReceive = response.GetResponseStream())228 ????????????????????{229 ????????????????????????using (var zipStream = new GZipStream(streamReceive, CompressionMode.Decompress))230 ????????????????????????{231 ????????????????????????????using (sr = new StreamReader(zipStream, Encoding.UTF8))232 ????????????????????????????{233 ????????????????????????????????result = sr.ReadToEnd();234 ????????????????????????????}235 ????????????????????????}236 ????????????????????}237 ????????????????}238 ????????????????else239 ????????????????{240 ????????????????????using (Stream streamReceive = response.GetResponseStream())241 ????????????????????{242 ????????????????????????using (sr = new StreamReader(streamReceive, Encoding.UTF8))243 ????????????????????????{244 ????????????????????????????result = sr.ReadToEnd();245 ????????????????????????}246 ????????????????????}247 ????????????????}248 249 ????????????????sr.Close();250 ????????????}251 ????????????catch (System.Threading.ThreadAbortException e)252 ????????????{253 254 ????????????????System.Threading.Thread.ResetAbort();255 ????????????}256 ????????????catch (WebException e)257 ????????????{258 259 ????????????}260 ????????????catch (Exception e)261 ????????????{262 263 ????????????}264 ????????????finally265 ????????????{266 ????????????????//关闭连接和流267 ????????????????if (response != null)268 ????????????????{269 ????????????????????response.Close();270 ????????????????}271 ????????????????if (request != null)272 ????????????????{273 ????????????????????request.Abort();274 ????????????????}275 ????????????}276 ????????????return result;277 ????????}278 ????????#endregion279 280 ????????#region 4.处理http GET请求【可以解压】281 ????????/// <summary>282 ????????/// 处理http GET请求【可以解压】283 ????????/// </summary>284 ????????/// <param name="url">请求的url地址</param>285 ????????/// <returns>http GET成功后返回的数据，失败抛WebException异常</returns>286 ????????public static string Get(string url)287 ????????{288 ????????????System.GC.Collect();289 ????????????string result = "";290 291 ????????????HttpWebRequest request = null;292 ????????????HttpWebResponse response = null;293 ????????????StreamReader sr = null;294 295 ????????????//请求url以获取数据296 ????????????try297 ????????????{298 ????????????????//设置最大连接数299 ????????????????ServicePointManager.DefaultConnectionLimit = 200;300 301 ????????????????/***************************************************************302 ????????????????* 下面设置HttpWebRequest的相关属性303 ????????????????* ************************************************************/304 ????????????????request = (HttpWebRequest)WebRequest.Create(url);305 306 ????????????????request.Method = "GET";307 308 ????????????????//获取服务器返回309 ????????????????response = (HttpWebResponse)request.GetResponse();310 311 ????????????????//获取HTTP返回数据312 ????????????????//获取服务端返回数据313 ????????????????if (response.ContentEncoding.ToLower() == "gzip")//如果使用了GZip则先解压314 ????????????????{315 ????????????????????using (Stream streamReceive = response.GetResponseStream())316 ????????????????????{317 ????????????????????????using (var zipStream =318 ????????????????????????????new GZipStream(streamReceive, CompressionMode.Decompress))319 ????????????????????????{320 ????????????????????????????using (sr = new StreamReader(zipStream, Encoding.UTF8))321 ????????????????????????????{322 ????????????????????????????????result = sr.ReadToEnd();323 ????????????????????????????}324 ????????????????????????}325 ????????????????????}326 ????????????????}327 ????????????????else328 ????????????????{329 ????????????????????using (Stream streamReceive = response.GetResponseStream())330 ????????????????????{331 ????????????????????????using (sr = new StreamReader(streamReceive, Encoding.UTF8))332 ????????????????????????{333 ????????????????????????????result = sr.ReadToEnd();334 ????????????????????????}335 ????????????????????}336 ????????????????}337 ????????????????sr.Close();338 ????????????}339 ????????????catch (System.Threading.ThreadAbortException e)340 ????????????{341 342 ????????????????System.Threading.Thread.ResetAbort();343 ????????????}344 ????????????catch (WebException e)345 ????????????{346 347 ????????????????if (e.Status == WebExceptionStatus.ProtocolError)348 ????????????????{349 350 ????????????????}351 352 ????????????}353 ????????????catch (Exception e)354 ????????????{355 356 ????????????}357 ????????????finally358 ????????????{359 ????????????????//关闭连接和流360 ????????????????if (response != null)361 ????????????????{362 ????????????????????response.Close();363 ????????????????}364 ????????????????if (request != null)365 ????????????????{366 ????????????????????request.Abort();367 ????????????????}368 ????????????}369 ????????????return result;370 ????????}371 ????????#endregion372 ????}373 }