【原创】标准HTTP请求工具类

以下是个人在项目开发过程中，总结的Http请求工具类，主要包括四种：

1.处理http POST请求【XML格式、无解压】；

2.处理http GET请求【XML格式、无解压】；

3.处理http POST请求【可以解压】；

4.处理http GET请求【可以解压】。

 using System;
 using System.Collections.Generic;
 using System.IO;
 using System.IO.Compression;
 using System.Linq;
 using System.Net;
 using System.Net.Security;
 using System.Security.Cryptography.X509Certificates;
 using System.Text;
 using System.Threading.Tasks;

 namespace Common
 {
     public class HttpService
     {
         public static bool CheckValidationResult(object sender, X509Certificate certificate, X509Chain chain, SslPolicyErrors errors)
         {
             //直接确认，否则打不开
             return true;
         }

         #region 1.处理http POST请求【XML格式、无解压】
         /// <summary>
         /// 处理http POST请求【XML格式、无解压】
         /// </summary>
         /// <param name="xml">请求参数</param>
         /// <param name="url">请求接口地址</param>
         /// <param name="timeout">设置超时时间</param>
         /// <returns>http POST成功后返回的数据，失败抛WebException异常</returns>
         public static string PostXMLRequest(string xml, string url, int timeout = )
         {
             System.GC.Collect();//垃圾回收，回收没有正常关闭的http连接

             string result = "";//返回结果

             HttpWebRequest request = null;
             HttpWebResponse response = null;
             Stream reqStream = null;

             try
             {
                 //设置最大连接数
                 ServicePointManager.DefaultConnectionLimit = ;
                 //设置https验证方式
                 if (url.StartsWith("https", StringComparison.OrdinalIgnoreCase))
                 {
                     ServicePointManager.ServerCertificateValidationCallback =
                             new RemoteCertificateValidationCallback(CheckValidationResult);
                 }

                 /***************************************************************
                 * 下面设置HttpWebRequest的相关属性
                 * ************************************************************/
                 request = (HttpWebRequest)WebRequest.Create(url);

                 request.Method = "POST";
                 request.Timeout = timeout * ;

                 //设置POST的数据类型和长度
                 request.ContentType = "text/xml";
                 byte[] data = System.Text.Encoding.UTF8.GetBytes(xml);
                 request.ContentLength = data.Length;

                 //往服务器写入数据
                 reqStream = request.GetRequestStream();
                 reqStream.Write(data, , data.Length);
                 reqStream.Close();

                 //获取服务端返回
                 response = (HttpWebResponse)request.GetResponse();

                 //获取服务端返回数据
                 StreamReader sr = new StreamReader(response.GetResponseStream(), Encoding.UTF8);
                 result = sr.ReadToEnd().Trim();
                 sr.Close();
             }
             catch (System.Threading.ThreadAbortException e)
             {
                 System.Threading.Thread.ResetAbort();
             }
             catch (WebException e)
             {

             }
             catch (Exception e)
             {

             }
             finally
             {
                 //关闭连接和流
                 if (response != null)
                 {
                     response.Close();
                 }
                 if (request != null)
                 {
                     request.Abort();
                 }
             }
             return result;
         }
         #endregion

         #region 2.处理http GET请求【XML格式、无解压】
         /// <summary>
         /// 处理http GET请求【XML格式、无解压】
         /// </summary>
         /// <param name="url">请求的url地址</param>
         /// <returns>http GET成功后返回的数据，失败抛WebException异常</returns>
         public static string GetXMLRequest(string url)
         {
             System.GC.Collect();
             string result = "";

             HttpWebRequest request = null;
             HttpWebResponse response = null;

             //请求url以获取数据
             try
             {
                 //设置最大连接数
                 ServicePointManager.DefaultConnectionLimit = ;
                 //设置https验证方式
                 if (url.StartsWith("https", StringComparison.OrdinalIgnoreCase))
                 {
                     ServicePointManager.ServerCertificateValidationCallback =
                             new RemoteCertificateValidationCallback(CheckValidationResult);
                 }

                 /***************************************************************
                 * 下面设置HttpWebRequest的相关属性
                 * ************************************************************/
                 request = (HttpWebRequest)WebRequest.Create(url);

                 request.Method = "GET";

                 //获取服务器返回
                 response = (HttpWebResponse)request.GetResponse();

                 //获取HTTP返回数据
                 StreamReader sr = new StreamReader(response.GetResponseStream(), Encoding.UTF8);
                 result = sr.ReadToEnd().Trim();
                 sr.Close();
             }
             catch (System.Threading.ThreadAbortException e)
             {

                 System.Threading.Thread.ResetAbort();
             }
             catch (WebException e)
             {

             }

             finally
             {
                 //关闭连接和流
                 if (response != null)
                 {
                     response.Close();
                 }
                 if (request != null)
                 {
                     request.Abort();
                 }
             }
             return result;
         }
         #endregion

         #region 3.处理http POST请求【可以解压】
         /// <summary>
         /// 处理http POST请求【可以解压】
         /// </summary>
         /// <param name="param">请求参数</param>
         /// <param name="url">请求接口地址</param>
         /// <param name="timeout">设置超时时间</param>
         /// <returns>http POST成功后返回的数据，失败抛WebException异常</returns>
         public static string Post(string param, string url, int timeout = )
         {
             System.GC.Collect();//垃圾回收，回收没有正常关闭的http连接

             string result = "";//返回结果

             HttpWebRequest request = null;
             HttpWebResponse response = null;
             Stream reqStream = null;
             StreamReader sr = null;
             try
             {
                 //设置最大连接数
                 ServicePointManager.DefaultConnectionLimit = ;

                 /***************************************************************
                 * 下面设置HttpWebRequest的相关属性
                 * ************************************************************/
                 request = (HttpWebRequest)WebRequest.Create(url);

                 request.Method = "POST";
                 request.Timeout = timeout * ;

                 //设置POST的数据类型
                 request.ContentType = "application/x-www-form-urlencoded;charset=UTF-8";

                 byte[] data = System.Text.Encoding.UTF8.GetBytes(param);

                 request.UserAgent = "Mozilla/4.0";
                 request.Headers.Add("Accept-Encoding", "gzip, deflate");

                 //设置POST的数据长度
                 request.ContentLength = data.Length;

                 //往服务器写入数据
                 reqStream = request.GetRequestStream();
                 reqStream.Write(data, , data.Length);
                 reqStream.Close();

                 //获取服务端返回
                 response = (HttpWebResponse)request.GetResponse();

                 //获取服务端返回数据
                 if (response.ContentEncoding.ToLower() == "gzip")//如果使用了GZip则先解压
                 {
                     using (Stream streamReceive = response.GetResponseStream())
                     {
                         using (var zipStream = new GZipStream(streamReceive, CompressionMode.Decompress))
                         {
                             using (sr = new StreamReader(zipStream, Encoding.UTF8))
                             {
                                 result = sr.ReadToEnd();
                             }
                         }
                     }
                 }
                 else
                 {
                     using (Stream streamReceive = response.GetResponseStream())
                     {
                         using (sr = new StreamReader(streamReceive, Encoding.UTF8))
                         {
                             result = sr.ReadToEnd();
                         }
                     }
                 }

                 sr.Close();
             }
             catch (System.Threading.ThreadAbortException e)
             {

                 System.Threading.Thread.ResetAbort();
             }
             catch (WebException e)
             {

             }
             catch (Exception e)
             {

             }
             finally
             {
                 //关闭连接和流
                 if (response != null)
                 {
                     response.Close();
                 }
                 if (request != null)
                 {
                     request.Abort();
                 }
             }
             return result;
         }
         #endregion

         #region 4.处理http GET请求【可以解压】
         /// <summary>
         /// 处理http GET请求【可以解压】
         /// </summary>
         /// <param name="url">请求的url地址</param>
         /// <returns>http GET成功后返回的数据，失败抛WebException异常</returns>
         public static string Get(string url)
         {
             System.GC.Collect();
             string result = "";

             HttpWebRequest request = null;
             HttpWebResponse response = null;
             StreamReader sr = null;

             //请求url以获取数据
             try
             {
                 //设置最大连接数
                 ServicePointManager.DefaultConnectionLimit = ;

                 /***************************************************************
                 * 下面设置HttpWebRequest的相关属性
                 * ************************************************************/
                 request = (HttpWebRequest)WebRequest.Create(url);

                 request.Method = "GET";

                 //获取服务器返回
                 response = (HttpWebResponse)request.GetResponse();

                 //获取HTTP返回数据
                 //获取服务端返回数据
                 if (response.ContentEncoding.ToLower() == "gzip")//如果使用了GZip则先解压
                 {
                     using (Stream streamReceive = response.GetResponseStream())
                     {
                         using (var zipStream =
                             new GZipStream(streamReceive, CompressionMode.Decompress))
                         {
                             using (sr = new StreamReader(zipStream, Encoding.UTF8))
                             {
                                 result = sr.ReadToEnd();
                             }
                         }
                     }
                 }
                 else
                 {
                     using (Stream streamReceive = response.GetResponseStream())
                     {
                         using (sr = new StreamReader(streamReceive, Encoding.UTF8))
                         {
                             result = sr.ReadToEnd();
                         }
                     }
                 }
                 sr.Close();
             }
             catch (System.Threading.ThreadAbortException e)
             {

                 System.Threading.Thread.ResetAbort();
             }
             catch (WebException e)
             {

                 if (e.Status == WebExceptionStatus.ProtocolError)
                 {

                 }

             }
             catch (Exception e)
             {

             }
             finally
             {
                 //关闭连接和流
                 if (response != null)
                 {
                     response.Close();
                 }
                 if (request != null)
                 {
                     request.Abort();
                 }
             }
             return result;
         }
         #endregion
     }
 }