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using System;
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using System.Collections.Generic;
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using System.IO;
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using BP.DA;
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using System.Linq;
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using System.Net;
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using System.Net.Security;
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using System.Security.Cryptography.X509Certificates;
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using System.Text;
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namespace BP.WF
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{
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public class HttpWebResponseUtility
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{
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private static readonly string DefaultUserAgent = "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.2; SV1; .NET CLR 1.1.4322; .NET CLR 2.0.50727)";
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/// <summary>
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/// 创建GET方式的HTTP请求
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/// </summary>
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/// <param name="url">请求的URL</param>
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/// <param name="timeout">请求的超时时间</param>
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/// <param name="userAgent">请求的客户端浏览器信息，可以为空</param>
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/// <param name="cookies">随同HTTP请求发送的Cookie信息，如果不需要身份验证可以为空</param>
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/// <returns></returns>
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public HttpWebResponse CreateGetHttpResponse(string url, int? timeout, string userAgent, CookieCollection cookies)
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{
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if (DataType.IsNullOrEmpty(url))
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throw new ArgumentNullException("url");
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HttpWebRequest request = WebRequest.Create(url) as HttpWebRequest;
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//由于远程方已关闭传输流,身份验证失败 加这行
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ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls12 | SecurityProtocolType.Tls11;
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request.Method = "GET";
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request.UserAgent = DefaultUserAgent;
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if (!DataType.IsNullOrEmpty(userAgent))
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{
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request.UserAgent = userAgent;
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}
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if (timeout.HasValue)
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{
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request.Timeout = timeout.Value;
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}
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if (cookies != null)
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{
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request.CookieContainer = new CookieContainer();
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request.CookieContainer.Add(cookies);
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}
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return request.GetResponse() as HttpWebResponse;
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}
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/// <summary>
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/// 创建POST方式的HTTP请求
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/// </summary>
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/// <param name="url">请求的URL</param>
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/// <param name="parameters">随同请求POST的参数名称及参数值字典</param>
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/// <param name="timeout">请求的超时时间</param>
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/// <param name="userAgent">请求的客户端浏览器信息，可以为空</param>
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/// <param name="requestEncoding">发送HTTP请求时所用的编码</param>
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/// <param name="cookies">随同HTTP请求发送的Cookie信息，如果不需要身份验证可以为空</param>
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/// <returns></returns>
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public HttpWebResponse CreatePostHttpResponse(string url, IDictionary<string, string> parameters, int? timeout, string userAgent, Encoding requestEncoding, CookieCollection cookies)
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{
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if (DataType.IsNullOrEmpty(url))
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{
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throw new ArgumentNullException("url");
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}
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if (requestEncoding == null)
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{
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throw new ArgumentNullException("requestEncoding");
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}
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HttpWebRequest request = null;
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//如果是发送HTTPS请求
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if (url.StartsWith("https", StringComparison.OrdinalIgnoreCase))
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{
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ServicePointManager.ServerCertificateValidationCallback = new RemoteCertificateValidationCallback(CheckValidationResult);
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request = WebRequest.Create(url) as HttpWebRequest;
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request.ProtocolVersion = HttpVersion.Version10;
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}
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else
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{
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request = WebRequest.Create(url) as HttpWebRequest;
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}
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//由于远程方已关闭传输流,身份验证失败 加这行
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ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls12 | SecurityProtocolType.Tls11;
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request.Method = "POST";
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request.ContentType = "application/x-www-form-urlencoded";
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if (!DataType.IsNullOrEmpty(userAgent))
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{
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request.UserAgent = userAgent;
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}
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else
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{
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request.UserAgent = DefaultUserAgent;
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}
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if (timeout.HasValue)
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{
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request.Timeout = timeout.Value;
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}
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if (cookies != null)
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{
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request.CookieContainer = new CookieContainer();
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request.CookieContainer.Add(cookies);
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}
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//如果需要POST数据
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if (!(parameters == null || parameters.Count == 0))
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{
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StringBuilder buffer = new StringBuilder();
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int i = 0;
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foreach (string key in parameters.Keys)
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{
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if (i > 0)
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{
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buffer.AppendFormat("&{0}={1}", key, parameters[key]);
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}
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else
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{
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buffer.AppendFormat("{0}={1}", key, parameters[key]);
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}
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i++;
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}
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byte[] data = requestEncoding.GetBytes(buffer.ToString());
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using (Stream stream = request.GetRequestStream())
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{
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stream.Write(data, 0, data.Length);
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}
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}
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return request.GetResponse() as HttpWebResponse;
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}
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/// <summary>
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/// 创建POST方式的HTTP请求 ContentType json
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/// </summary>
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/// <param name="url">请求的URL</param>
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/// <param name="JsonParameters">随同请求POST的参数名称及参数值字典json</param>
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/// <param name="timeout">请求的超时时间</param>
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/// <param name="userAgent">请求的客户端浏览器信息，可以为空</param>
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/// <param name="requestEncoding">发送HTTP请求时所用的编码</param>
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/// <param name="cookies">随同HTTP请求发送的Cookie信息，如果不需要身份验证可以为空</param>
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/// <returns></returns>
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public HttpWebResponse CreatePostHttpResponse(string url, string JsonParameters, int? timeout, string userAgent, Encoding requestEncoding, CookieCollection cookies)
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{
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if (DataType.IsNullOrEmpty(url))
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{
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throw new ArgumentNullException("url");
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}
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if (requestEncoding == null)
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{
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throw new ArgumentNullException("requestEncoding");
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}
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HttpWebRequest request = null;
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//如果是发送HTTPS请求
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if (url.StartsWith("https", StringComparison.OrdinalIgnoreCase))
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{
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ServicePointManager.ServerCertificateValidationCallback = new RemoteCertificateValidationCallback(CheckValidationResult);
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request = WebRequest.Create(url) as HttpWebRequest;
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request.ProtocolVersion = HttpVersion.Version10;
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}
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else
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{
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request = WebRequest.Create(url) as HttpWebRequest;
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}
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request.Method = "POST";
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request.ContentType = "application/json";
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if (!DataType.IsNullOrEmpty(userAgent))
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{
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request.UserAgent = userAgent;
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}
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else
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{
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request.UserAgent = DefaultUserAgent;
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}
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if (timeout.HasValue)
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{
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request.Timeout = timeout.Value;
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}
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if (cookies != null)
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{
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request.CookieContainer = new CookieContainer();
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request.CookieContainer.Add(cookies);
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}
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//如果需要POST数据
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if (!DataType.IsNullOrEmpty(JsonParameters))
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{
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byte[] data = requestEncoding.GetBytes(JsonParameters);
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using (Stream stream = request.GetRequestStream())
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{
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stream.Write(data, 0, data.Length);
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}
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}
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return request.GetResponse() as HttpWebResponse;
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}
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/// <summary>
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/// 创建POST方式的HTTP请求 (用于微信自动推送)
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/// </summary>
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/// <param name="url">请求的URL</param>
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/// <param name="parameters">随同请求POST的参数名称及参数值字典</param>
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/// <param name="timeout">请求的超时时间</param>
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/// <param name="userAgent">请求的客户端浏览器信息，可以为空</param>
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/// <param name="requestEncoding">发送HTTP请求时所用的编码</param>
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/// <param name="cookies">随同HTTP请求发送的Cookie信息，如果不需要身份验证可以为空</param>
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/// <returns></returns>
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public HttpWebResponse WXCreateGetHttpResponse(string url, StringBuilder parameters,
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int? timeout, string userAgent, Encoding requestEncoding, CookieCollection cookies)
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{
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if (DataType.IsNullOrEmpty(url))
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throw new Exception("err@url不能为空");
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if (requestEncoding == null)
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throw new Exception("err@requestEncoding，不能为空.");
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HttpWebRequest request = null;
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//如果是发送HTTPS请求
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if (url.StartsWith("https", StringComparison.OrdinalIgnoreCase))
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{
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ServicePointManager.ServerCertificateValidationCallback =
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new RemoteCertificateValidationCallback(CheckValidationResult);
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request = WebRequest.Create(url) as HttpWebRequest;
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request.ProtocolVersion = HttpVersion.Version10;
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}
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else
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{
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request = WebRequest.Create(url) as HttpWebRequest;
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}
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request.Method = "POST";
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request.ContentType = "application/x-www-form-urlencoded";
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if (DataType.IsNullOrEmpty(userAgent)==false)
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{
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request.UserAgent = userAgent;
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}
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else
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{
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request.UserAgent = DefaultUserAgent;
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}
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if (timeout.HasValue)
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{
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request.Timeout = timeout.Value;
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}
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if (cookies != null)
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{
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request.CookieContainer = new CookieContainer();
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request.CookieContainer.Add(cookies);
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}
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///增加参数的地方.
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if (parameters != null)
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{
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StringBuilder sb = parameters;
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byte[] requestBytes = Encoding.UTF8.GetBytes(sb.ToString());
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request.ContentLength = requestBytes.Length;
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Stream requeStream = request.GetRequestStream();
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requeStream.Write(requestBytes, 0, requestBytes.Length);
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requeStream.Close();
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}
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return request.GetResponse() as HttpWebResponse;
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}
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private bool CheckValidationResult(object sender, X509Certificate certificate, X509Chain chain, SslPolicyErrors errors)
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{
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return true; //总是接受
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}
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/// <summary>
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/// 根据Url获取返回内容
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/// </summary>
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/// <param name="url"></param>
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/// <returns></returns>
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public string HttpResponseGet(string url)
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{
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HttpWebResponse response = this.CreateGetHttpResponse(url, 600000, null, null);
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StreamReader reader = new StreamReader(response.GetResponseStream(), Encoding.UTF8);
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string str = reader.ReadToEnd();
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reader.Dispose();
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reader.Close();
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if (response != null)
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response.Close();
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return str;
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}
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/// <summary>
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/// 随同请求POST的参数名称及参数值字典
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/// </summary>
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/// <param name="url">请求地址</param>
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/// <param name="parameters">参数集合</param>
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/// <returns>响应返回结果</returns>
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public string HttpResponsePost(string url, IDictionary<string, string> parameters)
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{
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Encoding encoding = Encoding.GetEncoding("utf-8");
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HttpWebResponse response = this.CreatePostHttpResponse(url, parameters, 10000, null, encoding, null);
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StreamReader reader = new StreamReader(response.GetResponseStream(), Encoding.UTF8);
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string str = reader.ReadToEnd();
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reader.Dispose();
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reader.Close();
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if (response != null)
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response.Close();
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return str;
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}
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/// <summary>
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/// 随同请求POST的参数名称及参数值字典
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/// </summary>
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/// <param name="url">请求地址</param>
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/// <param name="parameters">参数集合</param>
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/// <returns>响应返回结果</returns>
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public string HttpResponsePost_Json(string url, string parameters)
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{
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Encoding encoding = Encoding.GetEncoding("utf-8");
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HttpWebResponse response = this.CreatePostHttpResponse(url, parameters, 10000, null, encoding, null);
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StreamReader reader = new StreamReader(response.GetResponseStream(), Encoding.UTF8);
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string str = reader.ReadToEnd();
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reader.Dispose();
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reader.Close();
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if (response != null)
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response.Close();
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return str;
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}
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}
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}
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