请教HttpRequest类

Question

HttpRequest抓取网页数据，程序设置好后要不要刷新网页触发代码？还是不用管它，它自动会完成给它安排的工作？

Answer 1

HttpRequest是请求操作对象，里面可以请求你要的网页，然后可以使用方法获得返回的数据流，你把返回流打印在界面上就可以了！

Answer 2

request.AllowAutoRedirect = true;
request.Timeout = this.m_nTimeOut;
HttpWebResponse response = (HttpWebResponse)request.GetResponse();
responseStream = response.GetResponseStream();

Answer 3

public string Get(string url, string referer)
        {
            int failedTimes = _tryTimes;
            while (failedTimes-- > 0)
            {
                try
                {
                    DelaySomeTime();                    HttpWebRequest req = (HttpWebRequest)WebRequest.Create(new Uri(url));
                    req.UserAgent = reqUserAgent;
                    req.CookieContainer = _cc;
                    req.Referer = referer;
                    req.Method = "GET";
                    req.Timeout = _timeout;
                    if (null != _proxy && null != _proxy.Credentials)
                    {
                        req.UseDefaultCredentials = true;
                    }
                    req.ContentType = "application/x-www-form-urlencoded";
                    req.Proxy = _proxy;
                    //req.Connection = "Keep-Alive";                    //接收返回字串
                    HttpWebResponse res = (HttpWebResponse)req.GetResponse();
                    StreamReader sr = new StreamReader(res.GetResponseStream(), Encoding.UTF8);
                    return sr.ReadToEnd();
                }
                catch (Exception e)
                {
                    log.Error("HTTP GET Error: " + e.Message);
                    log.Error("Url: " + url);
                }
            }

Answer 4

给你贴的就是我正在做的get获取网页信息的方法