如题,想获取网页的“源代码”,用这个方法
public String GetPageCode(String PageURL, String Charset)
{
try
{
String strHtml = "";
HttpWebRequest wreq = (HttpWebRequest)WebRequest.Create(PageURL);
CookieContainer cookieCon = new CookieContainer();
wreq.CookieContainer = cookieCon;
HttpWebResponse wresp = (HttpWebResponse)wreq.GetResponse();
Stream s = wresp.GetResponseStream();
StreamReader objReader = new StreamReader(s, System.Text.Encoding.GetEncoding(Charset));
string strLine = "";
while (strLine != null)
{
strLine = objReader.ReadLine();
if (strLine != null)
{
strHtml += strLine.Trim();
}
}
strHtml = strHtml.Replace("<br />", "\r\n"); return strHtml;
}
catch (Exception n)
{
return n.Message;
}
}
传入的网址,是正确的,但总提示:无法连接远程服务器,请问怎么解决,谢谢了
public String GetPageCode(String PageURL, String Charset)
{
try
{
String strHtml = "";
HttpWebRequest wreq = (HttpWebRequest)WebRequest.Create(PageURL);
CookieContainer cookieCon = new CookieContainer();
wreq.CookieContainer = cookieCon;
HttpWebResponse wresp = (HttpWebResponse)wreq.GetResponse();
Stream s = wresp.GetResponseStream();
StreamReader objReader = new StreamReader(s, System.Text.Encoding.GetEncoding(Charset));
string strLine = "";
while (strLine != null)
{
strLine = objReader.ReadLine();
if (strLine != null)
{
strHtml += strLine.Trim();
}
}
strHtml = strHtml.Replace("<br />", "\r\n"); return strHtml;
}
catch (Exception n)
{
return n.Message;
}
}
传入的网址,是正确的,但总提示:无法连接远程服务器,请问怎么解决,谢谢了
/// 创建GET方式的HTTP请求
/// </summary>
/// <param name="url">请求的URL</param>
/// <param name="timeout">请求的超时时间</param>
/// <param name="userAgent">请求的客户端浏览器信息,可以为空</param>
/// <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>
/// <returns></returns>
public static HttpWebResponse CreateGetHttpResponse(string url,int? timeout, string userAgent,CookieCollection cookies)
{
if (string.IsNullOrEmpty(url))
{
throw new ArgumentNullException("url");
}
HttpWebRequest request = WebRequest.Create(url) as HttpWebRequest;
request.Method = "GET";
request.UserAgent = DefaultUserAgent;
if (!string.IsNullOrEmpty(userAgent))
{
request.UserAgent = userAgent;
}
if (timeout.HasValue)
{
request.Timeout = timeout.Value;
}
if (cookies != null)
{
request.CookieContainer = new CookieContainer();
request.CookieContainer.Add(cookies);
}
return request.GetResponse() as HttpWebResponse;
} 用这个看看
提示:当前上下文中不存在名称“DefaultUserAgent“