各位老大，急求：请求被中止: 连接被意外关闭

2011-06-12 05:54:25 1.8k 阅读 AI 写同款 · GEO 优化AI 选题数据监测一键分发 ›

请求被中止: 连接被意外关闭

在 System.Net.ConnectStream.Read(Byte[] buffer, Int32 offset, Int32 size)
在 System.IO.StreamReader.ReadBuffer()
在 System.IO.StreamReader.ReadLine()

如何解决

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切换为时间正序

sunny906 2011-06-13

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用线程

迷迷520 2011-06-13

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public void CloseHttp()
{
if (this.httpWebResponse != null)
{
this.httpWebResponse.Close();
}
this.httpWebResponse = null;
}

迷迷520 2011-06-13

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        public string GetResponseText(string url, string referer, Encoding encode)

        {

            if (encode == null)

            {

                encode = Encoding.GetEncoding("gb2312");

            }



            Stream responseStream = null;

            StreamReader streamReader = null;



            int num = this._tryTimes;

            string html = String.Empty;

            string tmpStr = String.Empty;

            bool ishtml = false;



            while (num-- > 0)

            {

                html = String.Empty;

                tmpStr = String.Empty;

                ishtml = false;



                int millisecondsTimeout = MyUtils._rnd.Next(0, this._delayTime);

                Thread.Sleep(millisecondsTimeout);



                HttpWebRequest httpWebRequest = null;

                try

                {

                    httpWebRequest = (HttpWebRequest)WebRequest.Create(new Uri(url));

                    httpWebRequest.UserAgent = this._reqUserAgent;

                    httpWebRequest.CookieContainer = this._cc;

                    httpWebRequest.ServicePoint.ConnectionLimit = _maxTry;

                    httpWebRequest.Referer = referer;

                    httpWebRequest.Accept = this._accept;

                    httpWebRequest.KeepAlive = true;

                    httpWebRequest.Method = "GET";

                    httpWebRequest.Timeout = 2000000;

                    httpWebRequest.UnsafeAuthenticatedConnectionSharing = true;



                    httpWebResponse = (HttpWebResponse)httpWebRequest.GetResponse();

                    responseStream = httpWebResponse.GetResponseStream();

                    streamReader = new StreamReader(responseStream, encode);

                    while ((tmpStr = streamReader.ReadLine()) != null)

                    {

                        html += tmpStr;

                    }

                    ishtml = true;

                }

                catch (Exception msg)

                {

                    MyUtils.ErrLog("GetResponseText-1.3", msg.TargetSite.Name, msg.Message, "转换URL：\r\n" + url + "\r\n数据：\r\n" + msg.StackTrace);  

                }

                finally

                {

                    streamReader.Close();

                    responseStream.Close();

                    this.CloseHttp();

                }



                if (ishtml) { break; } else { continue; }

            }



            return html;

        }

迷迷520 2011-06-12

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好的，谢谢谢谢。

读DataSet的时候会特别的卡。窗体会白一会才反映过来

暖枫无敌 2011-06-12

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WinForm中数据量大的话，你要显示的话，就通过获取数据集DataSet，然后通过分页进行显示。

httpWebRequest
httpWebResponse
这些当然也是需要关闭的，都放在finally块中处理吧。

迷迷520 2011-06-12

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httpWebRequest
httpWebResponse

这俩需要关闭吗？？

迷迷520 2011-06-12

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楼上高手，再请教一个问题，
像如WINFORM数据比较大的操作，应该如何处理才不会是窗体卡

迷迷520 2011-06-12

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万分感谢，我试下，只是有点不明白，不同样都是关闭吗

暖枫无敌 2011-06-12

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将流定义放在你的循环外面，然后在finally块内关闭，你还在循环的时候就关闭了，肯定出问题了。



 public string GetResponseText(string url, string referer, Encoding encode)

        {

            Stream responseStream ;

            StreamReader streamReader;

            if (encode == null)

            {

                encode = Encoding.GetEncoding("gb2312");

            }

            int num = this._tryTimes;

            while (num-- > 0)

            {

                string html = String.Empty;

                string tmpStr = String.Empty;



                int millisecondsTimeout = MyUtils._rnd.Next(0, this._delayTime);

                Thread.Sleep(millisecondsTimeout);

                HttpWebRequest httpWebRequest = null;

                try

                {

                    httpWebRequest = (HttpWebRequest)WebRequest.Create(new Uri(url));

                    httpWebRequest.UserAgent = this._reqUserAgent;

                    httpWebRequest.CookieContainer = this._cc;

                    httpWebRequest.ServicePoint.ConnectionLimit = _maxTry;

                    httpWebRequest.Referer = referer;

                    httpWebRequest.Accept = this._accept;

                    httpWebRequest.KeepAlive = true;

                    httpWebRequest.Method = "GET";

                    httpWebRequest.Timeout = 2000000;

                    httpWebRequest.UnsafeAuthenticatedConnectionSharing = true;



                    httpWebResponse = (HttpWebResponse)httpWebRequest.GetResponse();

                    responseStream = httpWebResponse.GetResponseStream();

                    streamReader = new StreamReader(responseStream, encode);

                    while ((tmpStr = streamReader.ReadLine()) != null)

                    {

                        html += tmpStr;

                    }

                    return html;

                }

                catch (Exception msg)

                {

                    MyUtils.ErrLog("GetResponseText-1.1", msg.TargetSite.Name, msg.Message, "转换URL：\r\n" + url + "\r\n数据：\r\n" + msg.StackTrace);



                    continue;

                }

                finally

                {

                      streamReader.Close();

                    responseStream.Close();

                }

            }

            return string.Empty;

        }

迷迷520 2011-06-12

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        public string GetResponseText(string url, string referer, Encoding encode)

        {

            if (encode == null)

            {

                encode = Encoding.GetEncoding("gb2312");

            }

            int num = this._tryTimes;

            while (num-- > 0)

            {

                string html = String.Empty;

                string tmpStr = String.Empty;



                int millisecondsTimeout = MyUtils._rnd.Next(0, this._delayTime);

                Thread.Sleep(millisecondsTimeout);

                HttpWebRequest httpWebRequest = null;

                try

                {

                    httpWebRequest = (HttpWebRequest)WebRequest.Create(new Uri(url));

                    httpWebRequest.UserAgent = this._reqUserAgent;

                    httpWebRequest.CookieContainer = this._cc;

                    httpWebRequest.ServicePoint.ConnectionLimit = _maxTry;

                    httpWebRequest.Referer = referer;

                    httpWebRequest.Accept = this._accept;

                    httpWebRequest.KeepAlive = true;

                    httpWebRequest.Method = "GET";

                    httpWebRequest.Timeout = 2000000;

                    httpWebRequest.UnsafeAuthenticatedConnectionSharing = true;



                    httpWebResponse = (HttpWebResponse)httpWebRequest.GetResponse();

                    Stream responseStream = httpWebResponse.GetResponseStream();

                    StreamReader streamReader = new StreamReader(responseStream, encode);

                    while ((tmpStr = streamReader.ReadLine()) != null)

                    {

                        html += tmpStr;

                    }

                    streamReader.Close();

                    responseStream.Close();

                    return html;

                }

                catch (Exception msg)

                {

                    MyUtils.ErrLog("GetResponseText-1.1", msg.TargetSite.Name, msg.Message, "转换URL：\r\n" + url + "\r\n数据：\r\n" + msg.StackTrace);



                    continue;

                }

            }

            return string.Empty;

        }

暖枫无敌 2011-06-12

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贴出代码看看，应该是你在读取数据的时候，你已经将文件流关闭造成的

各位老大，急求：请求被中止: 连接被意外关闭

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