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读取http响应信息,并返回响应体
/// <summary> /// 读取http响应信息,并返回响应体 /// </summary> /// <param name="response">HttpWebResponse对象</param> /// <returns></returns> public static string ReaderFromHttp(HttpWebResponse response) { Stream stream = null; StreamReader streamReader = null; try { var contentEncoding = response.ContentEncoding; //压缩标志 var characterSet = response.CharacterSet; //字符集 stream = response.GetResponseStream(); if (contentEncoding == "gzip") { /*压缩数据,要进行处理*/ throw new NotImplementedException("gzip压缩数据处理还么实现"); } else { streamReader = new StreamReader(stream, Encoding.GetEncoding(characterSet)); return streamReader.ReadToEnd(); } } catch (Exception e) { return null; } finally { if (streamReader != null) { streamReader.Close(); streamReader = null; } if (stream != null) { stream.Close(); stream = null; } } }
Http Get
#region Get Http /// <summary> /// GET方式的HTTP请求 /// </summary> /// <param name="targetUri"></param> /// <param name="timeout">超时时间</param> /// <param name="cookie">随同HTTP请求发送的Cookie信息</param> /// <returns></returns> public static HttpWebRequest CreateGetHttpWebRequest(string targetUri, int timeout = 0, CookieCollection cookie = null) { HttpWebRequest request = WebRequest.Create(targetUri) as HttpWebRequest; request.UserAgent = DefaultUserAgent; request.Method = "GET"; if (timeout != 0) request.Timeout = timeout; if (cookie != null) { request.CookieContainer = new CookieContainer(); request.CookieContainer.Add(cookie); } return request; } /// <summary> /// GET方式的HTTP请求,返回响应体 /// </summary> /// <param name="targetUri"></param> /// <param name="timeout">超时时间</param> /// <param name="cookie">随同HTTP请求发送的Cookie信息</param> /// <returns></returns> public static string ReturnFromGetHttp(string targetUri, int timeout = 0, CookieCollection cookie = null) { HttpWebRequest request = null; HttpWebResponse response = null; try { request = CreateGetHttpWebRequest(targetUri, timeout, cookie); response = request.GetResponse() as HttpWebResponse; return ReaderFromHttp(response); } catch (Exception e) { return null; } finally { if (response != null) { response.Close(); response = null; } if (request != null) { request.Abort(); request = null; } } } #endregion
Http Post
#region Post Http /// <summary> /// POST方式的HTTP请求 /// </summary> /// <param name="targetUri"></param> /// <param name="content">请求文本信息</param> /// <param name="characterSet">字符集(默认utf-8)</param> /// <param name="timeout">超时时间</param> /// <param name="cookie">随同HTTP请求发送的Cookie信息</param> /// <returns></returns> public static HttpWebRequest CreatePostHttpWebRequest(string targetUri, string content, string characterSet = null, int timeout = 0, CookieCollection cookie = null) { HttpWebRequest request = WebRequest.Create(targetUri) as HttpWebRequest; request.UserAgent = DefaultUserAgent; request.Method = "POST"; request.ContentType = "application/x-www-form-urlencoded"; request.Headers.Add("Accept-Encoding", "gzip, deflate"); if (timeout != 0) request.Timeout = timeout; if (cookie != null) { request.CookieContainer = new CookieContainer(); request.CookieContainer.Add(cookie); } using (var stream = request.GetRequestStream()) //写入请求数据流 { characterSet = string.IsNullOrEmpty(characterSet) ? "utf-8" : characterSet; var bytes = Encoding.GetEncoding(characterSet).GetBytes(content); request.ContentLength = bytes.LongLength; stream.Write(bytes, 0, bytes.Length); } return request; } /// <summary> /// POST方式的HTTP请求,返回响应体 /// </summary> /// <param name="targetUri"></param> /// <param name="content">请求文本信息</param> /// <param name="characterSet">字符集(默认utf-8)</param> /// <param name="timeout">超时时间</param> /// <param name="cookie">随同HTTP请求发送的Cookie信息</param> /// <returns></returns> public static string ReturnFromPostHttp(string targetUri, string content, string characterSet = null, int timeout = 0, CookieCollection cookie = null) { HttpWebRequest request = null; HttpWebResponse response = null; try { request = CreatePostHttpWebRequest(targetUri,content,characterSet, timeout, cookie); response = request.GetResponse() as HttpWebResponse; return ReaderFromHttp(response); } catch (Exception e) { return null; } finally { if (response != null) { response.Close(); response = null; } if (request != null) { request.Abort(); request = null; } } } #endregion
调用方式:
var reval = ReturnFromGetHttp("http://www.douyou100.com");
var reval1 = ReturnFromPostHttp("http://www.douyou100.com","请求文本");
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原文地址:http://www.cnblogs.com/liujinwu-11/p/4343753.html