各位老大，急求：请求被中止: 连接被意外关闭

[迷迷520]

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

[暖枫无敌]

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

[迷迷520]

        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]

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]

万分感谢，我试下，只是有点不明白，不同样都是关闭吗

[迷迷520]

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]

httpWebRequest
httpWebResponse

这俩需要关闭吗？？

[暖枫无敌]

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]

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

[迷迷520]

        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]

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

[sunny906]

用线程