1、 通过HttpWebRequest发起一个Post请求，并获取返回数据
1 使用指定编码格式发送一个POST请求，并通过约定的编码格式获取返回的数据 2 3 Code highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/--> 4 /// <summary> 5 /// 使用指定编码格式发送一个POST请求，并通过约定的编码格式获取返回的数据 6 /// </summary> 7 /// <param name="url">请求的url地址</param> 8 /// <param name="parameters">请求的参数集合</param> 9 /// <param name="reqencode">请求的编码格式</param> 10 /// <param name="resencode">接收的编码格式</param> 11 /// <returns></returns> 12 public static string SendPostRequest(string url, NameValueCollection parameters, Encoding reqencode, Encoding resencode) 13 { 14 HttpWebRequest req = (HttpWebRequest)WebRequest.Create(url); 15 req.Method = "post"; 16 req.ContentType = "application/x-www-form-urlencoded"; 17 18 StringBuilder parassb = new StringBuilder(); 19 foreach (string key in parameters.Keys) 20 { 21 if (parassb.Length > 0) 22 parassb.Append("&"); 23 parassb.AppendFormat("{0}={1}", key, parameters[key]); 24 } 25 byte[] data = reqencode.GetBytes(parassb.ToString()); 26 Stream reqstream = req.GetRequestStream(); 27 reqstream.Write(data, 0, data.Length); 28 reqstream.Close(); 29 string result = String.Empty; 30 using (StreamReader reader = new StreamReader(req.GetResponse().GetResponseStream(), resencode)) 31 { 32 result = reader.ReadToEnd(); 33 } 34 return result; 35 }
2、通过HttpWebRequest发起一个Get请求，并获取返回数据
1 HttpWebRequest 发送一个GET请求 2 3 Code highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/--> 4 5 /* 6 * 需要引用如下namespace 7 * using System.Reflection; 8 * using System.Text; 9 * using System.Net; 10 * using System.IO; 11 */ 12 13 /// <summary> 14 /// HttpWebRequest 发送一个GET请求 15 /// </summary> 16 /// <param name="url">请求的url地址</param> 17 /// <param name="parameters">请求的参数集合</param> 18 /// <param name="reqencode">请求的编码格式</param> 19 /// <param name="resencode">接收的编码格式</param> 20 /// <returns></returns> 21 public static string SendGetRequest(string baseurl, NameValueCollection parameters, Encoding reqencode, Encoding resencode) 22 { 23 StringBuilder parassb = new StringBuilder(); 24 foreach (string key in parameters.Keys) 25 { 26 if (parassb.Length > 0) 27 parassb.Append("&"); 28 parassb.AppendFormat("{0}={1}", HttpUtility.UrlEncode(key, reqencode), HttpUtility.UrlEncode(parameters[key], reqencode)); 29 } 30 31 if (parassb.Length > 0) 32 { 33 baseurl += "?" + parassb; 34 } 35 HttpWebRequest req = (HttpWebRequest)WebRequest.Create(baseurl); 36 req.Method = "GET"; 37 req.MaximumAutomaticRedirections = 3; 38 req.Timeout = 5000; 39 40 string result = String.Empty; 41 using (StreamReader reader = new StreamReader(req.GetResponse().GetResponseStream(), resencode)) 42 { 43 result = reader.ReadToEnd(); 44 } 45 return result; 46 }
3、通过编程的方式实现Post提交请求并重定向至新的URL地址
1 Post请求并且重定向 2 3 Code highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/--> 4 /// <summary> 5 /// Post请求并且重定向 6 /// </summary> 7 /// <param name="url"></param> 8 /// <param name="parameters"></param> 9 /// <param name="context"></param> 10 public static void PostAndRedirect(string url, NameValueCollection parameters, HttpContext context) 11 { 12 StringBuilder script = new StringBuilder(); 13 script.AppendFormat("<form name=redirpostform action='{0}' method='post'>", url); 14 foreach (string key in parameters.Keys) 15 { 16 script.AppendFormat("<input type='hidden' name='{0}' value='{1}'>", 17 key, parameters[key]); 18 } 19 script.Append("</form>"); 20 script.Append("<script language='javascript'>redirpostform.submit();</script>"); 21 context.Response.Write(script); 22 context.Response.End(); 23 }
感谢：http://www.cnblogs.com/didi/archive/2010/06/03/1750723.html
