post提交获得html页面源码的实现代码

/// summary /// 获得页面的html源码 主要用于后台生成静态文件时获得源码 /// /summary /// param name= url /param /// returns /returns public static string GetPageHTML(string url) string httpString = string.Empty; WebRequest request = WebRequest.Create(url); request.Timeout = 200000;  using (HttpWebResponse response = (HttpWebResponse)request.GetResponse()) if (response.StatusDescription.ToLower().Equals( ok )) using (StreamReader writer = new StreamReader(response.GetResponseStream(), Encoding.GetEncoding( GB2312 ))) httpString = writer.ReadToEnd(); return httpString;
 /// summary /// 获得页面的html源码 主要用于后台生成静态文件时获得源码UTF-8 /// /summary /// param name= url /param /// returns /returns public static string GetPageHTMLUTF8(string url) string httpString = string.Empty; WebRequest request = WebRequest.Create(url); request.Timeout = 200000;  using (HttpWebResponse response = (HttpWebResponse)request.GetResponse()) if (response.StatusDescription.ToLower().Equals( ok )) using (StreamReader writer = new StreamReader(response.GetResponseStream(), Encoding.GetEncoding( UTF-8 ))) httpString = writer.ReadToEnd(); return httpString;
 /// summary /// post提交JSON数据。支持.net4.0及以下的版本 /// /summary /// param name= url /param /// param name= json /param /// returns /returns public static string GetHtmlByJson(string url, string json = ) var result = string.Empty; try { var request = WebRequest.Create(url) as HttpWebRequest; request.ContentType = text/json  request.Method = post  //request.CookieContainer = _cookie; using (var streamWriter = new StreamWriter(request.GetRequestStream())) streamWriter.Write(json); streamWriter.Flush(); streamWriter.Close(); var response = (HttpWebResponse)request.GetResponse(); using (var reader = new StreamReader(response.GetResponseStream())) result = reader.ReadToEnd(); catch (UriFormatException uex) // 出错处理 } return result; /// summary /// 利用WebClient 远程POST数据并返回数据 /// /summary /// param name= strUrl 远程URL地址 /param /// param name= strParams 参数，要提交的JSON字符串 /param /// param name= RespEncode POST数据的编码 /param /// param name= ReqEncode 获取数据的编码 /param /// returns /returns public static string PostData(string strUrl, string strParams, Encoding RespEncode, Encoding ReqEncode) /** * 本函数只支持.net4.5以上的框架 HttpClient httpclient = new HttpClient(); try { //打开页面 httpclient.Credentials = CredentialCache.DefaultCredentials; //从指定的URI下载资源 byte[] responseData = httpclient.DownloadData(strUrl); string srcString = RespEncode.GetString(responseData); httpclient.Headers.Add( Content-Type , application/x-www-form-urlencoded string postString = strParams; // 将字符串转换成字节数组 byte[] postData = Encoding.ASCII.GetBytes(postString); // 上传数据，返回页面的字节数组 responseData = httpclient.UploadData(strUrl, POST , postData); srcString = ReqEncode.GetString(responseData); return srcString; } catch (Exception ex) { //记录异常日志 //释放资源 httpclient.Dispose(); return string.Empty; } */ return 
 /// summary /// 执行POST提交范例 /// /summary /// param name= url /param /// param name= postdata LoginName=365admin Password=fob123 /param /// returns /returns public static string PostPageHTMLUTF8(string url, string postdata) WebClient client = new WebClient(); System.Collections.Specialized.NameValueCollection list = new System.Collections.Specialized.NameValueCollection();  list.Add( opencheckindatatype , 3  list.Add( starttime , 1492617600  list.Add( endtime , 1492790400  // useridlist : [ james , paul ] list.Add( useridlist , [ TuHuaXing ]  byte[] j = client.UploadValues(url, list); //var dec = BitConverter.ToInt64(j,0); //string jS = BitConverter.ToString(j); //jS = Convert.ToString(jS,10); return System.Text.Encoding.Default.GetString(j); //目标页面获取值 request.form[ id ] /** WebRequest request7 = WebRequest.Create(url); request7.Method = POST  //post传参数 byte[] bytes = Encoding.ASCII.GetBytes(postdata); request7.ContentType = application/x-www-form-urlencoded request7.ContentLength = postdata.Length; request7.S Stream sendStream = request7.GetRequestStream(); sendStream.Write(bytes, 0, bytes.Length); sendStream.Close(); //得到返回值 WebResponse response7 = request7.GetResponse(); string OrderQuantity = new StreamReader(response7.GetResponseStream(), Encoding.GetEncoding( utf-8 )).ReadToEnd(); return OrderQuantity; //转化成json对象处理 //List GetOrderQuantity getOrderQuantity = sr.Deserialize List GetOrderQuantity (OrderQuantity); **/ }

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