Esempio n. 1
0
        // 连Flush带看IsConnected状态
        // 如果返回true表示正常,false表示输出流已经切断,没有必要再继续dump了
        public static long DumpStream(Stream streamSource,
            Stream streamTarget,
            FlushOutput flushOutputMethod)
        {
            int nChunkSize = 8192;
            byte[] bytes = new byte[nChunkSize];
            long lLength = 0;
            while (true)
            {
                int n = streamSource.Read(bytes, 0, nChunkSize);

                if (n != 0)	// 2005/6/8
                    streamTarget.Write(bytes, 0, n);

                if (flushOutputMethod != null)
                {
                    if (flushOutputMethod() == false)
                        break;
                }

                if (n <= 0)
                    break;

                lLength += n;
                //if (n<1000)
                //	break;
            }

            return lLength;
        }
Esempio n. 2
0
    // return:
    //      -1  出错
    //      0   成功
    //      1   暂时不能访问
    int DumpFile(string strFilename,
                 string strContentType,
                 out string strError)
    {
        strError = "";

        if (string.IsNullOrEmpty(strFilename))
        {
            strError = "DumpFile() strFilename 参数不应为空";
            return(-1);
        }
#if NO
        // 不让浏览器缓存页面
        this.Response.AddHeader("Pragma", "no-cache");
        this.Response.AddHeader("Cache-Control", "no-store, no-cache, must-revalidate, post-check=0, pre-check=0");
        this.Response.AddHeader("Expires", "0");
#endif
        this.Response.ContentType = strContentType;

        FileInfo fi           = new FileInfo(strFilename);
        DateTime lastmodified = fi.LastWriteTimeUtc;

        this.Response.AddHeader("Last-Modified", DateTimeUtil.Rfc1123DateTimeString(lastmodified)); // .ToUniversalTime()

        try
        {
            using (Stream stream = File.Open(strFilename,
                                             FileMode.Open,
                                             FileAccess.Read,
                                             FileShare.ReadWrite)) // 2015/1/12
            {
                this.Response.AddHeader("Content-Length", stream.Length.ToString());

                FlushOutput flushdelegate = new FlushOutput(MyFlushOutput);
                stream.Seek(0, SeekOrigin.Begin);
                StreamUtil.DumpStream(stream, this.Response.OutputStream,
                                      flushdelegate);
            }
        }
        catch (FileNotFoundException)
        {
            strError = "文件 '" + strFilename + "' 不存在";
            return(0);
        }
        catch (DirectoryNotFoundException)
        {
            strError = "文件 '" + strFilename + "' 路径中某一级目录不存在";
            return(0);
        }
        catch (Exception ex)
        {
            strError = ExceptionUtil.GetAutoText(ex);
            return(-1);
        }

        return(1);
    }
Esempio n. 3
0
    // return:
    //      -1  出错
    //      0   成功
    //      1   暂时不能访问
    int DumpRssFile(string strRssFile,
                    out string strError)
    {
        strError = "";

        // 不让浏览器缓存页面
        this.Response.AddHeader("Pragma", "no-cache");
        this.Response.AddHeader("Cache-Control", "no-store, no-cache, must-revalidate, post-check=0, pre-check=0");
        this.Response.AddHeader("Expires", "0");

        this.Response.ContentType = "application/rss+xml";

        try
        {
            // http://stackoverflow.com/questions/904952/whats-causing-session-state-has-created-a-session-id-but-cannot-save-it-becau
            string sessionId = Session.SessionID;

            app.ResultsetLocks.LockForRead(strRssFile, 500);

            try
            {
                using (Stream stream = File.Open(strRssFile,
                                                 FileMode.Open,
                                                 FileAccess.ReadWrite,
                                                 FileShare.ReadWrite))
                {
                    this.Response.AddHeader("Content-Length", stream.Length.ToString());

                    FlushOutput flushdelegate = new FlushOutput(MyFlushOutput);

                    stream.Seek(0, SeekOrigin.Begin);

                    StreamUtil.DumpStream(stream, this.Response.OutputStream,
                                          flushdelegate);
                }
            }
            finally
            {
                app.ResultsetLocks.UnlockForRead(strRssFile);
            }
        }
        catch (System.ApplicationException /*ex*/)
        {
            this.Response.ContentType       = "text/plain";
            this.Response.StatusCode        = 503;
            this.Response.StatusDescription = "相关的XML缓存正在被创建,请稍后重新访问";
            return(1);
        }

        return(0);
    }
Esempio n. 4
0
        public static long DumpStream(Stream streamSource,
                                      Stream streamTarget,
                                      long lLength,
                                      FlushOutput flushOutputMethod)
        {
            long lWrited    = 0;
            long lThisRead  = 0;
            int  nChunkSize = 8192;

            byte[] bytes = new byte[nChunkSize];
            while (true)
            {
                long lLeft = lLength - lWrited;
                if (lLeft > nChunkSize)
                {
                    lThisRead = nChunkSize;
                }
                else
                {
                    lThisRead = lLeft;
                }
                long n = streamSource.Read(bytes, 0, (int)lThisRead);

                if (n != 0)     // 2005/6/8
                {
                    streamTarget.Write(bytes, 0, (int)n);
                }

                if (flushOutputMethod != null)
                {
                    if (flushOutputMethod() == false)
                    {
                        break;
                    }
                }


                //if (n<nChunkSize)
                //	break;
                if (n <= 0)
                {
                    break;
                }

                lWrited += n;
            }

            return(lWrited);
        }
Esempio n. 5
0
 public void WriteTo(FlushOutput flushOutputDelegate, CloseOutput closeOutputDelegate, ThreadPriority priority, object to)
 {
     if (flushOutputDelegate != null)
     {
         flushOutput += flushOutputDelegate;
     }
     if (closeOutputDelegate != null)
     {
         closeOutput += closeOutputDelegate;
     }
     _writeThread              = new Thread(FlushThread);
     _writeThread.Priority     = priority;
     _writeThread.IsBackground = true;
     _writeThread.Start(to);
 }
Esempio n. 6
0
    // return:
    //      -1  出错
    //      0   成功
    //      1   暂时不能访问
    int DumpFile(string strFilename,
                 string strContentType,
                 out string strError)
    {
        strError = "";

        // 不让浏览器缓存页面
        this.Response.AddHeader("Pragma", "no-cache");
        this.Response.AddHeader("Cache-Control", "no-store, no-cache, must-revalidate, post-check=0, pre-check=0");
        this.Response.AddHeader("Expires", "0");

        this.Response.ContentType = strContentType;

        try
        {
            using (Stream stream = File.Open(strFilename,
                                             FileMode.Open,
                                             FileAccess.ReadWrite,
                                             FileShare.ReadWrite))
            {
                this.Response.AddHeader("Content-Length", stream.Length.ToString());

                FlushOutput flushdelegate = new FlushOutput(MyFlushOutput);

                stream.Seek(0, SeekOrigin.Begin);

                StreamUtil.DumpStream(stream, this.Response.OutputStream,
                                      flushdelegate);
            }
        }
        catch (FileNotFoundException)
        {
            strError = "文件 '" + strFilename + "' 不存在";
            return(0);
        }
        catch (DirectoryNotFoundException)
        {
            strError = "文件 '" + strFilename + "' 路径中某一级目录不存在";
            return(0);
        }
        catch (Exception ex)
        {
            strError = ExceptionUtil.GetAutoText(ex);
            return(-1);
        }

        return(1);
    }
Esempio n. 7
0
    void OutputLogo(string strFileName,
                    string strText)
    {
        FileInfo fi           = new FileInfo(strFileName);
        DateTime lastmodified = fi.LastWriteTimeUtc;

        this.Response.AddHeader("Last-Modified", DateTimeUtil.Rfc1123DateTimeString(lastmodified)); // .ToUniversalTime()

        TextInfo info = new TextInfo();

        info.FontFace  = "Microsoft YaHei";
        info.FontSize  = 10;
        info.colorText = Color.Gray;

        // 文字图片
        using (MemoryStream image = ArtText.PaintText(
                   strFileName,
                   strText,
                   info,
                   "center",
                   "100%",
                   "100%",
                   "65%",
                   ImageFormat.Jpeg))
        {
            this.Response.ContentType = "image/jpeg";
            this.Response.AddHeader("Content-Length", image.Length.ToString());

            //this.Response.AddHeader("Pragma", "no-cache");
            //this.Response.AddHeader("Cache-Control", "no-store, no-cache, must-revalidate, post-check=0, pre-check=0");
            //this.Response.AddHeader("Expires", "0");

            FlushOutput flushdelegate = new FlushOutput(MyFlushOutput);
            image.Seek(0, SeekOrigin.Begin);
            StreamUtil.DumpStream(image, Response.OutputStream, flushdelegate);
        }
        // Response.Flush();
        Response.End();
    }
Esempio n. 8
0
        // 连Flush带看IsConnected状态
        // 如果返回true表示正常,false表示输出流已经切断,没有必要再继续dump了

        public static long DumpStream(Stream streamSource,
                                      Stream streamTarget,
                                      FlushOutput flushOutputMethod)
        {
            int nChunkSize = 8192;

            byte[] bytes   = new byte[nChunkSize];
            long   lLength = 0;

            while (true)
            {
                int n = streamSource.Read(bytes, 0, nChunkSize);

                if (n != 0)     // 2005/6/8
                {
                    streamTarget.Write(bytes, 0, n);
                }

                if (flushOutputMethod != null)
                {
                    if (flushOutputMethod() == false)
                    {
                        break;
                    }
                }

                if (n <= 0)
                {
                    break;
                }

                lLength += n;
                //if (n<1000)
                //	break;
            }

            return(lLength);
        }
Esempio n. 9
0
    //OpacApplication app = null;
    //SessionInfo sessioninfo = null;

    protected void Page_Load(object sender, EventArgs e)
    {
        if (WebUtil.PrepareEnvironment(this,
ref app,
ref sessioninfo) == false)
            return;

        string strError = "";
        int nRet = 0;

        string strBarcode = Request.QueryString["barcode"];
#if NO
        if (strBarcode.IndexOf("@") != -1)
        {
            if (sessioninfo.UserID == strBarcode
                && string.IsNullOrEmpty(sessioninfo.PhotoUrl) == false)
            {
                this.Response.Redirect(this.sessioninfo.PhotoUrl, true);
                return;
            }
        }
#endif

        string strAction = Request.QueryString["action"];

        // 获得一般 QR 图像
        // getphoto.aspx?action=qri&barcode=????????&width=???&height=??? 其中 width 和 height 参数可以缺省
        // 获得读者证号 QR 图像
        // getphoto.aspx?action=pqri&barcode=????????&width=???&height=??? 其中 barcode 参数是读者证条码号。要求当前账户具有 getpatrontempid 的权限,而且读者身份只能获取自己的 tempid
        if (strAction == "qri"
            || strAction == "pqri")
        {
            string strCharset = Request.QueryString["charset"];
            string strWidth = Request.QueryString["width"];
            string strHeight = Request.QueryString["height"];
            string strDisableECI = Request.QueryString["disableECI"];

            bool bDisableECI = false;
            if (string.IsNullOrEmpty(strDisableECI) == false &&
                (strDisableECI.ToLower() == "true"
                || strDisableECI.ToLower() == "yes"
                || strDisableECI.ToLower() == "on"))
                bDisableECI = true;

            int nWidth = 0;

            if (string.IsNullOrEmpty(strWidth) == false)
            {
                if (Int32.TryParse(strWidth, out nWidth) == false)
                {
                    strError = "width 参数 '" + strWidth + "' 格式不合法";
                    goto ERROR1;
                }
            }
            int nHeight = 0;
            if (string.IsNullOrEmpty(strHeight) == false)
            {
                if (Int32.TryParse(strHeight, out nHeight) == false)
                {
                    strError = "height 参数 '" + strHeight + "' 格式不合法";
                    goto ERROR1;
                }
            }

            if (strAction == "qri")
            {
                nRet = app.OutputQrImage(
                    this.Page,
                    strBarcode,
                    strCharset,
                    nWidth,
                    nHeight,
                    bDisableECI,
                    false,
                    out strError);
                if (nRet == -1)
                    goto ERROR1;
            }
            else if (strAction == "pqri")
            {
                // 读者证号二维码
                string strCode = "";
                // 获得读者证号二维码字符串
                nRet = app.GetPatronTempId(
                    // sessioninfo,
                    strBarcode,
                    out strCode,
                    out strError);
                if (nRet == -1)
                    goto ERROR1;    // 把出错信息作为图像返回
                nRet = app.OutputQrImage(
                    this.Page,
                    strCode,
                    strCharset,
                    nWidth,
                    nHeight,
                    bDisableECI,
                    false,
                    out strError);
                if (nRet == -1)
                    goto ERROR1;
            }
            this.Response.End();
            return;
        }


        string strDisplayName = Request.QueryString["displayName"];
        string strEncyptBarcode = Request.QueryString["encrypt_barcode"];

        // 2012/5/22
        // 较新的用法 userid=xxxx 或者 userid=encrypt:xxxx
        string strUserID = Request.QueryString["userid"];
        if (string.IsNullOrEmpty(strUserID) == false)
        {
            if (StringUtil.HasHead(strUserID, "encrypt:") == true)
            {
                strEncyptBarcode = strUserID.Substring("encrypt:".Length);
            }
            else
            {
                strBarcode = strUserID;
            }
        }

        string strPhotoPath = "";
        // 根据读者证条码号找到头像资源路径
        // return:
        //      -1  出错
        //      0   没有找到。包括读者记录不存在,或者读者记录里面没有头像对象
        //      1   找到
        nRet = app.GetReaderPhotoPath(
            // sessioninfo,
            strBarcode,
            strEncyptBarcode,
            strDisplayName,
            out strPhotoPath,
            out strError);
        if (nRet == -1)
            goto ERROR1;

        if (nRet == 0)
        {
            this.Response.Redirect(MyWebPage.GetStylePath(app, "nonephoto.png"), true);
            return;
        }

        // TODO: HEAD / if-modify-since等精细处理

        // FlushOutput flushdelegate = new FlushOutput(MyFlushOutput);

        nRet = app.DownloadObject(
            this,
            null,
            strPhotoPath,
            false,
            "",
            out strError);
        if (nRet == -1)
            goto ERROR1;

        Response.End();
        return;
#if NO
    ERROR1:
        Response.Write(strError);
        Response.End();
        return;
#endif
    ERROR1:
        {
            // 文字图片
            using (MemoryStream image = WebUtil.TextImage(
                ImageFormat.Gif,
                strError,
                Color.Black,
                Color.Yellow,
                10,
                300))
            {
                Page.Response.ContentType = "image/gif";
                this.Response.AddHeader("Content-Length", image.Length.ToString());

                this.Response.AddHeader("Pragma", "no-cache");
                this.Response.AddHeader("Cache-Control", "no-store, no-cache, must-revalidate, post-check=0, pre-check=0");
                this.Response.AddHeader("Expires", "0");

                FlushOutput flushdelegate = new FlushOutput(MyFlushOutput);

                image.Seek(0, SeekOrigin.Begin);
                StreamUtil.DumpStream(image, Response.OutputStream, flushdelegate);
            }
            Response.Flush();
            Response.End();
        }
    }
Esempio n. 10
0
    // return:
    //      -1  出错
    //      0   成功
    int DumpImageFile(
        string strImageFile,
        out string strError)
    {
        strError = "";

        FileInfo fi = new FileInfo(strImageFile);

        Page page = this;

        DateTime lastmodified = fi.LastWriteTimeUtc;
        string   strIfHeader  = page.Request.Headers["If-Modified-Since"];

        if (String.IsNullOrEmpty(strIfHeader) == false)
        {
            DateTime isModifiedSince = DateTimeUtil.FromRfc1123DateTimeString(strIfHeader); // .ToLocalTime();

            if (DateTimeUtil.CompareHeaderTime(isModifiedSince, lastmodified) != 0)
            {
                // 修改过
            }
            else
            {
                // 没有修改过
                page.Response.StatusCode      = 304;
                page.Response.SuppressContent = true;
                return(0);
            }
        }

        page.Response.AddHeader("Last-Modified", DateTimeUtil.Rfc1123DateTimeString(lastmodified)); // .ToUniversalTime()

        // string strContentType = API.MimeTypeFrom(ReadFirst256Bytes(strImageFile), "");
        string strContentType = PathUtil.MimeTypeFrom(strImageFile);

        page.Response.ContentType = strContentType;

        try
        {
            using (Stream stream = File.Open(strImageFile,
                                             FileMode.Open,
                                             FileAccess.ReadWrite,
                                             FileShare.ReadWrite))
            {
                page.Response.AddHeader("Content-Length", stream.Length.ToString());

                FlushOutput flushdelegate = new FlushOutput(MyFlushOutput);

                stream.Seek(0, SeekOrigin.Begin);

                StreamUtil.DumpStream(stream, page.Response.OutputStream,
                                      flushdelegate);
            }
        }
        catch (Exception ex)
        {
            page.Response.ContentType       = "text/plain";
            page.Response.StatusCode        = 503;
            page.Response.StatusDescription = ex.Message;
            return(-1);
        }

        return(0);
    }
Esempio n. 11
0
    void OutputLogo(string strFileName,
        string strText)
    {
        FileInfo fi = new FileInfo(strFileName);
        DateTime lastmodified = fi.LastWriteTimeUtc;

        this.Response.AddHeader("Last-Modified", DateTimeUtil.Rfc1123DateTimeString(lastmodified)); // .ToUniversalTime()

        TextInfo info = new TextInfo();
        info.FontFace = "Microsoft YaHei";
        info.FontSize = 10;
        info.colorText = Color.Gray;

        // 文字图片
        using (MemoryStream image = ArtText.PaintText(
            strFileName,
            strText,
            info,
            "center",
            "100%",
            "100%",
            "65%",
            ImageFormat.Jpeg))
        {
            this.Response.ContentType = "image/jpeg";
            this.Response.AddHeader("Content-Length", image.Length.ToString());

            //this.Response.AddHeader("Pragma", "no-cache");
            //this.Response.AddHeader("Cache-Control", "no-store, no-cache, must-revalidate, post-check=0, pre-check=0");
            //this.Response.AddHeader("Expires", "0");

            FlushOutput flushdelegate = new FlushOutput(MyFlushOutput);
            image.Seek(0, SeekOrigin.Begin);
            StreamUtil.DumpStream(image, Response.OutputStream, flushdelegate);
        }
        // Response.Flush();
        Response.End();
    }
Esempio n. 12
0
    // return:
    //      -1  出错
    //      0   成功
    //      1   暂时不能访问
    int DumpRssFile(string strRssFile,
        out string strError)
    {
        strError = "";

        // 不让浏览器缓存页面
        this.Response.AddHeader("Pragma", "no-cache");
        this.Response.AddHeader("Cache-Control", "no-store, no-cache, must-revalidate, post-check=0, pre-check=0");
        this.Response.AddHeader("Expires", "0");

        this.Response.ContentType = "application/rss+xml";

        try
        {
            app.ResultsetLocks.LockForRead(strRssFile, 500);

            try
            {

                Stream stream = File.Open(strRssFile,
                    FileMode.Open,
                    FileAccess.ReadWrite,
                    FileShare.ReadWrite);
                try
                {
                    this.Response.AddHeader("Content-Length", stream.Length.ToString());

                    FlushOutput flushdelegate = new FlushOutput(MyFlushOutput);

                    stream.Seek(0, SeekOrigin.Begin);

                    StreamUtil.DumpStream(stream, this.Response.OutputStream,
                        flushdelegate);
                }
                finally
                {
                    stream.Close();
                }
            }
            finally
            {
                app.ResultsetLocks.UnlockForRead(strRssFile);
            }
        }
        catch (System.ApplicationException /*ex*/)
        {
            this.Response.ContentType = "text/plain";
            this.Response.StatusCode = 503;
            this.Response.StatusDescription = "相关的XML缓存正在被创建,请稍后重新访问";
            return 1;
        }

        return 0;
    }
Esempio n. 13
0
    void GetReportFile(string strUrl, string strFormat)
    {
        string strError = "";

        if (string.IsNullOrEmpty(app.ReportDir) == true)
        {
            strError = "dp2OPAC 尚未配置报表目录";
            goto ERROR1;
        }

        {
            // 检查路径的第一级
            string strFirstLevel = GetFirstLevel(strUrl);

            // 观察当前用户是否具有管辖这个分馆的权限
            if (
                string.IsNullOrEmpty(strFirstLevel) == false &&
                // sessioninfo.Channel != null &&
                (
                    sessioninfo.GlobalUser == true ||
                    StringUtil.IsInList(strFirstLevel, sessioninfo.LibraryCodeList) == true)
                )
            {
            }
            else
            {
                strError = "当前用户不具备查看分馆 '" + strFirstLevel + "' 的报表的权限";
                goto ERROR1;
            }
        }

#if NO
        string strLibraryCode = this.TitleBarControl1.SelectedLibraryCode;
        strLibraryCode = GetDisplayLibraryCode(strLibraryCode);

        string strReportDir = Path.Combine(app.ReportDir, strLibraryCode);
#endif
        string strReportDir = app.ReportDir;

        string strFileName = Path.Combine(strReportDir, CutLinkHead(strUrl));

        if (strFormat == "excel" ||
            strFormat == "xslx" ||
            strFormat == ".xslx")
        {
            strFileName = Path.Combine(Path.GetDirectoryName(strFileName),
                                       Path.GetFileNameWithoutExtension(strFileName) + ".xlsx");
        }

        string strOriginFileName = "";
        string strRequestExt     = "";

        // 探测文件是否存在
        // patameters:
        //      strRequestFileName  请求的文件名
        //      strOriginFileName   返回 原始文件名
        //      strRequestExt       返回 请求的文件扩展名 例如 .html
        // return:
        //      -1  出错
        //      1   成功
        int nRet = DetectFileName(strFileName,
                                  out strOriginFileName,
                                  out strRequestExt,
                                  out strError);
        if (nRet == -1)
        {
            this.Response.Write(GetErrorString(strError));
            this.Response.End();
            return;
        }

        // 不让浏览器缓存页面
        this.Response.AddHeader("Pragma", "no-cache");
        this.Response.AddHeader("Cache-Control", "no-store, no-cache, must-revalidate, post-check=0, pre-check=0");
        this.Response.AddHeader("Expires", "0");

        string strMime = "";
        // string strExt = Path.GetExtension(strFileName);
        if (string.Compare(strRequestExt, ".rml", true) == 0)
        {
            strMime = "text/xml";
        }
        else
        {
            PathUtil.GetWindowsMimeType(strRequestExt, out strMime);
        }

        if (string.IsNullOrEmpty(strMime) == true)
        {
            this.Response.ContentType = "text/html";
        }
        else
        {
            this.Response.ContentType = strMime;
        }

        this.Response.AddHeader("Content-Disposition", "inline;filename=" + HttpUtility.UrlEncode(Path.GetFileName(strFileName)));

        string strTempFileName = "";

        if (strFileName != strOriginFileName)
        {
            string strTempDir = Path.Combine(app.DataDir, "temp");
            PathUtil.TryCreateDir(strTempDir);
            strTempFileName = Path.Combine(strTempDir, "~temp_" + Guid.NewGuid().ToString());
            string strCssTemplate = @"BODY {
	FONT-FAMILY: Microsoft YaHei, Verdana, 宋体;
	FONT-SIZE: 10pt;
}

DIV.tabletitle
{
	font-size: 14pt;
	font-weight: bold;
	text-align: center;
	margin: 16pt;

	color: #444444;
}

DIV.titlecomment
{
	text-align: center;
	color: #777777;
}

DIV.createtime
{
	text-align: center;
	color: #777777;

	padding: 4pt;
}

TABLE.table
{
        font-size: 10pt;
        /*width: 100%;*/
	margin: auto;
	border-color: #efefef;
	border-width: 16px; 
	border-style: solid;
	border-collapse:collapse;
	background-color: #eeeeee;
}

TABLE.table TR
{

	border-color: #999999;
	border-width: 0px; 
	border-bottom-width: 1px;
	border-style: solid;
} 

TABLE.table THEAD TH 
{
	font-weight: bold;
	white-space:nowrap;
}

TABLE.table TD, TABLE.table TH 
{
	padding: 4pt;
	padding-left: 10pt;
	padding-right: 10pt;
	text-align: left;

}

%columns%

DIV.createtime
{
	text-align: center;
	font-size: 0.8em;
}";

            if (string.Compare(strRequestExt, ".html", true) == 0)
            {
                nRet = DigitalPlatform.dp2.Statis.Report.RmlToHtml(strOriginFileName,
                                                                   strTempFileName,
                                                                   strCssTemplate,
                                                                   out strError);
                if (nRet == -1)
                {
                    goto ERROR1;
                }
            }
            else if (string.Compare(strRequestExt, ".xlsx", true) == 0)
            {
                nRet = DigitalPlatform.dp2.Statis.Report.RmlToExcel(strOriginFileName,
                                                                    strTempFileName,
                                                                    out strError);
                if (nRet == -1)
                {
                    goto ERROR1;
                }
            }

            strFileName = strTempFileName;
        }

        try
        {
            using (Stream stream = File.Open(strFileName,
                                             FileMode.Open,
                                             FileAccess.ReadWrite,
                                             FileShare.ReadWrite))
            {
                this.Response.AddHeader("Content-Length", stream.Length.ToString());

                FlushOutput flushdelegate = new FlushOutput(MyFlushOutput);

                stream.Seek(0, SeekOrigin.Begin);

                StreamUtil.DumpStream(stream, this.Response.OutputStream,
                                      flushdelegate);
            }
        }
        catch (System.Web.HttpException)
        {
            // 2016/1/14
            // 因为 Client 端切断通讯
        }
        finally
        {
            if (string.IsNullOrEmpty(strTempFileName) == false)
            {
                File.Delete(strTempFileName);
            }
        }

        this.Response.OutputStream.Flush();
        this.Response.End();
        return;

ERROR1:
        this.Response.Write(GetErrorString(strError));
        this.Response.End();
    }
Esempio n. 14
0
    // return:
    //      -1  出错
    //      0   成功
    //      1   暂时不能访问
    int DumpRssFile(string strRssFile,
        out string strError)
    {
        strError = "";

        // 不让浏览器缓存页面
        this.Response.AddHeader("Pragma", "no-cache");
        this.Response.AddHeader("Cache-Control", "no-store, no-cache, must-revalidate, post-check=0, pre-check=0");
        this.Response.AddHeader("Expires", "0");

        this.Response.ContentType = "application/rss+xml";

        try
        {
            // http://stackoverflow.com/questions/904952/whats-causing-session-state-has-created-a-session-id-but-cannot-save-it-becau
            string sessionId = Session.SessionID;

            app.ResultsetLocks.LockForRead(strRssFile, 500);

            try
            {
                using (Stream stream = File.Open(strRssFile,
                    FileMode.Open,
                    FileAccess.ReadWrite,
                    FileShare.ReadWrite))
                {
                    this.Response.AddHeader("Content-Length", stream.Length.ToString());

                    FlushOutput flushdelegate = new FlushOutput(MyFlushOutput);

                    stream.Seek(0, SeekOrigin.Begin);

                    StreamUtil.DumpStream(stream, this.Response.OutputStream,
                        flushdelegate);
                }
            }
            finally
            {
                app.ResultsetLocks.UnlockForRead(strRssFile);
            }
        }
        catch (System.ApplicationException /*ex*/)
        {
            this.Response.ContentType = "text/plain";
            this.Response.StatusCode = 503;
            this.Response.StatusDescription = "相关的XML缓存正在被创建,请稍后重新访问";
            return 1;
        }

        return 0;
    }
Esempio n. 15
0
    // return:
    //      -1  出错
    //      0   成功
    //      1   暂时不能访问
    int DumpFile(string strFilename,
        string strContentType,
        out string strError)
    {
        strError = "";

#if NO
        // 不让浏览器缓存页面
        this.Response.AddHeader("Pragma", "no-cache");
        this.Response.AddHeader("Cache-Control", "no-store, no-cache, must-revalidate, post-check=0, pre-check=0");
        this.Response.AddHeader("Expires", "0");
#endif
        this.Response.ContentType = strContentType;

        FileInfo fi = new FileInfo(strFilename);
        DateTime lastmodified = fi.LastWriteTimeUtc;

        this.Response.AddHeader("Last-Modified", DateTimeUtil.Rfc1123DateTimeString(lastmodified)); // .ToUniversalTime()

        try
        {
            using (Stream stream = File.Open(strFilename,
                FileMode.Open,
                FileAccess.Read,
                FileShare.ReadWrite))   // 2015/1/12
            {
                this.Response.AddHeader("Content-Length", stream.Length.ToString());

                FlushOutput flushdelegate = new FlushOutput(MyFlushOutput);
                stream.Seek(0, SeekOrigin.Begin);
                StreamUtil.DumpStream(stream, this.Response.OutputStream,
                    flushdelegate);
            }
        }
        catch (FileNotFoundException)
        {
            strError = "文件 '" + strFilename + "' 不存在";
            return 0;
        }
        catch (DirectoryNotFoundException)
        {
            strError = "文件 '" + strFilename + "' 路径中某一级目录不存在";
            return 0;
        }
        catch (Exception ex)
        {
            strError = ExceptionUtil.GetAutoText(ex);
            return -1;
        }

        return 1;
    }
Esempio n. 16
0
    // return:
    //      -1  出错
    //      0   成功
    int DumpImageFile(
        string strImageFile,
        out string strError)
    {
        strError = "";

        FileInfo fi = new FileInfo(strImageFile);

        Page page = this;

        DateTime lastmodified = fi.LastWriteTimeUtc;
        string strIfHeader = page.Request.Headers["If-Modified-Since"];

        if (String.IsNullOrEmpty(strIfHeader) == false)
        {
            DateTime isModifiedSince = DateTimeUtil.FromRfc1123DateTimeString(strIfHeader); // .ToLocalTime();

            if (DateTimeUtil.CompareHeaderTime(isModifiedSince, lastmodified) != 0)
            {
                // 修改过
            }
            else
            {
                // 没有修改过
                page.Response.StatusCode = 304;
                page.Response.SuppressContent = true;
                return 0;
            }

        }

        page.Response.AddHeader("Last-Modified", DateTimeUtil.Rfc1123DateTimeString(lastmodified)); // .ToUniversalTime()

        string strContentType = API.MimeTypeFrom(ReadFirst256Bytes(strImageFile),
"");

        page.Response.ContentType = strContentType;

        try
        {

            Stream stream = File.Open(strImageFile,
                FileMode.Open,
                FileAccess.ReadWrite,
                FileShare.ReadWrite);
            try
            {
                page.Response.AddHeader("Content-Length", stream.Length.ToString());

                FlushOutput flushdelegate = new FlushOutput(MyFlushOutput);

                stream.Seek(0, SeekOrigin.Begin);

                StreamUtil.DumpStream(stream, page.Response.OutputStream,
                    flushdelegate);
            }
            finally
            {
                stream.Close();
            }
        }
        catch (Exception ex)
        {
            page.Response.ContentType = "text/plain";
            page.Response.StatusCode = 503;
            page.Response.StatusDescription = ex.Message;
            return -1;
        }

        return 0;
    }
Esempio n. 17
0
        // 获得资源。写入文件的版本。特别适用于获得资源,也可用于获得主记录体。
        // parameters:
        //		fileTarget	文件。注意在调用函数前适当设置文件指针位置。函数只会在当前位置开始向后写,写入前不会主动改变文件指针。
        //		strStyleParam	一般设置为"content,data,metadata,timestamp,outputpath";
        //		input_timestamp	若!=null,则本函数会把第一个返回的timestamp和本参数内容比较,如果不相等,则报错
        // return:
        //		-1	出错。具体出错原因在this.ErrorCode中。this.ErrorInfo中有出错信息。
        //		0	成功
        public long GetRes(string strPath,
            Stream fileTarget,
			FlushOutput flushOutputMethod,
            DigitalPlatform.Stop stop,
            string strStyleParam,
            byte[] input_timestamp,
            out string strMetaData,
            out byte[] baOutputTimeStamp,
            out string strOutputPath,
            out string strError)
        {
            strError = "";
            baOutputTimeStamp = null;
            strMetaData = "";
            strOutputPath = "";

            this.ErrorCode = ChannelErrorCode.None;
            this.ErrorInfo = "";

            string strStyle = strStyleParam;

            if (StringUtil.IsInList("attachment", strStyle) == true)
            {
                Debug.Assert(false, "attachment style暂时不能使用");
            }


            // 检查参数
            if (StringUtil.IsInList("data", strStyle) == false)
            {
                if (fileTarget != null)
                {
                    strError = "strStyle参数中若不包含data风格,则无法获得数据...";
                    return -1;
                }
            }
            if (StringUtil.IsInList("data", strStyle) == true)
            {
                if (fileTarget == null)
                {
                    strError = "strStyle参数中若包含data风格,而fileTarget为null,会浪费通讯资源...";
                    return -1;
                }
            }

            bool bHasMetadataStyle = false;
            if (StringUtil.IsInList("metadata", strStyle) == true)
            {
                bHasMetadataStyle = true;
            }

            // string id = "";
            byte[] baContent = null;

            long lStart = 0;
            int nPerLength = -1;

            byte[] old_timestamp = null;
            byte[] timestamp = null;

            long lTotalLength = -1;

            for (; ; )
            {
                DoIdle(); // 出让控制权,避免CPU资源耗费过度

                if (stop != null && stop.State != 0)
                {
                    strError = "用户中断";
                    return -1;
                }

                REDO:
                try
                {

                    string strMessage = "";

                    string strPercent = "";
                    if (lTotalLength != -1)
                    {
                        double ratio = (double)lStart / (double)lTotalLength;
                        strPercent = String.Format("{0,3:N}", ratio * (double)100) + "%";
                    }

                    if (stop != null)
                    {
                        strMessage = "正在下载 " + Convert.ToString(lStart) + "-"
                            + (lTotalLength == -1 ? "?" : Convert.ToString(lTotalLength))
                            + " " + strPercent + " "
                            + strPath;
                        stop.SetMessage(strMessage);
                    }

                    IAsyncResult soapresult = this.ws.BeginGetRes(strPath,
                        fileTarget == null ? 0 : lStart,
                        fileTarget == null ? 0 : nPerLength,
                        strStyle,
                        null,
                        null);

                    for (; ; )
                    {

                        /*
                        try 
                        {
                            Application.DoEvents();	// 出让界面控制权
                        }
                        catch
                        {
                        }
					

                        // System.Threading.Thread.Sleep(10);	// 避免CPU资源过度耗费
                         */
                        DoIdle(); // 出让控制权,避免CPU资源耗费过度

                        bool bRet = soapresult.AsyncWaitHandle.WaitOne(100, false);
                        if (bRet == true)
                            break;
                    }
                    if (this.m_ws == null)
                    {
                        strError = "用户中断";
                        this.ErrorCode = ChannelErrorCode.RequestCanceled;
                        return -1;
                    }
                    // string strOutputResPath;
                    Result result = this.ws.EndGetRes(
                        out baContent,
                        // out id,
                        out strMetaData,
                        out strOutputPath,
                        out timestamp,soapresult);

                    // 即便不是返回-1,也可能有错误码和错误信息字符串
                    ConvertErrorCode(result);
                    strError = result.ErrorString;

                    if (result.Value == -1)
                    {
                        if (result.ErrorCode == ErrorCodeValue.NotLogin
                            && this.Container != null)
                        {
                            // return:
                            //		-1	error
                            //		0	login failed
                            //		1	login succeed
                            int nRet = this.UiLogin(strPath,
                                out strError);
                            if (nRet == -1 || nRet == 0)
                            {
                                return -1;
                            }

                            goto REDO;
                        }

                        /*
                        ConvertErrorCode(result);
                        strError = result.ErrorString;
                         */
                        return -1;
                    }

                    if (bHasMetadataStyle == true)
                    {
                        StringUtil.RemoveFromInList("metadata",
                            true,
                            ref strStyle);
                        bHasMetadataStyle = false;
                    }


                    lTotalLength = result.Value;


                    if (StringUtil.IsInList("timestamp", strStyle) == true
                        /*
                        && lTotalLength > 0
                         * */ )    // 2012/1/11
                    {
                        if (input_timestamp != null)
                        {
                            if (ByteArray.Compare(input_timestamp, timestamp) != 0)
                            {
                                strError = "下载过程中发现时间戳和input_timestamp参数中的时间戳不一致,下载失败 ...";
                                return -1;
                            }
                        }
                        if (old_timestamp != null)
                        {
                            if (ByteArray.Compare(old_timestamp, timestamp) != 0)
                            {
                                strError = "下载过程中发现时间戳变化,下载失败 ...";
                                return -1;
                            }
                        }
                    }

                    old_timestamp = timestamp;

                    if (fileTarget == null)
                        break;

                    // 写入文件
                    if (StringUtil.IsInList("attachment", strStyle) == true)
                    {
                        Debug.Assert(false, "attachment style暂时不能使用");
                        /*
						Attachment attachment = ws.ResponseSoapContext.Attachments[id];
						if (attachment == null)
						{
							strError = "id为 '" +id+ "' 的attachment在WebService响应中没有找到...";
							return -1;
						}
						StreamUtil.DumpStream(attachment.Stream, fileTarget);
						nStart += (int)attachment.Stream.Length;

						Debug.Assert(attachment.Stream.Length <= result.Value, "每次返回的包尺寸["+Convert.ToString(attachment.Stream.Length)+"]应当小于result.Value["+Convert.ToString(result.Value)+"]");
                         */

                    }
                    else
                    {
                        Debug.Assert(StringUtil.IsInList("content", strStyle) == true,
                            "不是attachment风格,就应是content风格");

                        Debug.Assert(baContent != null, "返回的baContent不能为null");
                        Debug.Assert(baContent.Length <= result.Value, "每次返回的包尺寸[" + Convert.ToString(baContent.Length) + "]应当小于result.Value[" + Convert.ToString(result.Value) + "]");

                        fileTarget.Write(baContent, 0, baContent.Length);
                        if (flushOutputMethod != null)
                        {
                            if (flushOutputMethod() == false)
                            {
                                strError = "FlushOutputMethod()用户中断";
                                return -1;
                            }
                        } 
                        lStart += baContent.Length;
                    }

                    if (lStart >= result.Value)
                        break;	// 结束

                } // end try


                catch (Exception ex)
                {
                    /*
                    strError = ConvertWebError(ex);
                    return -1;
                     * */
                    int nRet = ConvertWebError(ex, out strError);
                    if (nRet == 0)
                        return -1;
                    goto REDO;
                }

            } // end of for

            baOutputTimeStamp = timestamp;
            this.ClearRedoCount();
            return 0;
        }
Esempio n. 18
0
    //OpacApplication app = null;
    //SessionInfo sessioninfo = null;

    protected void Page_Load(object sender, EventArgs e)
    {
        if (WebUtil.PrepareEnvironment(this,
                                       ref app,
                                       ref sessioninfo) == false)
        {
            return;
        }

        string strError = "";
        int    nRet     = 0;

        string strBarcode = Request.QueryString["barcode"];

#if NO
        if (strBarcode.IndexOf("@") != -1)
        {
            if (sessioninfo.UserID == strBarcode &&
                string.IsNullOrEmpty(sessioninfo.PhotoUrl) == false)
            {
                this.Response.Redirect(this.sessioninfo.PhotoUrl, true);
                return;
            }
        }
#endif

        string strAction = Request.QueryString["action"];

        // 获得一般 QR 图像
        // getphoto.aspx?action=qri&barcode=????????&width=???&height=??? 其中 width 和 height 参数可以缺省
        // 获得读者证号 QR 图像
        // getphoto.aspx?action=pqri&barcode=????????&width=???&height=??? 其中 barcode 参数是读者证条码号。要求当前账户具有 getpatrontempid 的权限,而且读者身份只能获取自己的 tempid
        if (strAction == "qri" ||
            strAction == "pqri")
        {
            string strCharset    = Request.QueryString["charset"];
            string strWidth      = Request.QueryString["width"];
            string strHeight     = Request.QueryString["height"];
            string strDisableECI = Request.QueryString["disableECI"];

            bool bDisableECI = false;
            if (string.IsNullOrEmpty(strDisableECI) == false &&
                (strDisableECI.ToLower() == "true" ||
                 strDisableECI.ToLower() == "yes" ||
                 strDisableECI.ToLower() == "on"))
            {
                bDisableECI = true;
            }

            int nWidth = 0;

            if (string.IsNullOrEmpty(strWidth) == false)
            {
                if (Int32.TryParse(strWidth, out nWidth) == false)
                {
                    strError = "width 参数 '" + strWidth + "' 格式不合法";
                    goto ERROR1;
                }
            }
            int nHeight = 0;
            if (string.IsNullOrEmpty(strHeight) == false)
            {
                if (Int32.TryParse(strHeight, out nHeight) == false)
                {
                    strError = "height 参数 '" + strHeight + "' 格式不合法";
                    goto ERROR1;
                }
            }

            if (strAction == "qri")
            {
                nRet = app.OutputQrImage(
                    this.Page,
                    strBarcode,
                    strCharset,
                    nWidth,
                    nHeight,
                    bDisableECI,
                    false,
                    out strError);
                if (nRet == -1)
                {
                    goto ERROR1;
                }
            }
            else if (strAction == "pqri")
            {
                // 读者证号二维码
                string strCode = "";
                // 获得读者证号二维码字符串
                nRet = app.GetPatronTempId(
                    // sessioninfo,
                    strBarcode,
                    out strCode,
                    out strError);
                if (nRet == -1)
                {
                    goto ERROR1;    // 把出错信息作为图像返回
                }
                nRet = app.OutputQrImage(
                    this.Page,
                    strCode,
                    strCharset,
                    nWidth,
                    nHeight,
                    bDisableECI,
                    false,
                    out strError);
                if (nRet == -1)
                {
                    goto ERROR1;
                }
            }
            this.Response.End();
            return;
        }


        string strDisplayName   = Request.QueryString["displayName"];
        string strEncyptBarcode = Request.QueryString["encrypt_barcode"];

        // 2012/5/22
        // 较新的用法 userid=xxxx 或者 userid=encrypt:xxxx
        string strUserID = Request.QueryString["userid"];
        if (string.IsNullOrEmpty(strUserID) == false)
        {
            if (StringUtil.HasHead(strUserID, "encrypt:") == true)
            {
                strEncyptBarcode = strUserID.Substring("encrypt:".Length);
            }
            else
            {
                strBarcode = strUserID;
            }
        }

        string strPhotoPath = "";
        // 根据读者证条码号找到头像资源路径
        // return:
        //      -1  出错
        //      0   没有找到。包括读者记录不存在,或者读者记录里面没有头像对象
        //      1   找到
        nRet = app.GetReaderPhotoPath(
            // sessioninfo,
            strBarcode,
            strEncyptBarcode,
            strDisplayName,
            out strPhotoPath,
            out strError);
        if (nRet == -1)
        {
            goto ERROR1;
        }

        if (nRet == 0)
        {
            this.Response.Redirect(MyWebPage.GetStylePath(app, "nonephoto.png"), true);
            return;
        }

        // TODO: HEAD / if-modify-since等精细处理

        // FlushOutput flushdelegate = new FlushOutput(MyFlushOutput);

        nRet = app.DownloadObject(
            this,
            null,
            strPhotoPath,
            false,
            "",
            out strError);
        if (nRet == -1)
        {
            goto ERROR1;
        }

        Response.End();
        return;

#if NO
ERROR1:
        Response.Write(strError);
        Response.End();
        return;
#endif
ERROR1:
        {
            // 文字图片
            using (MemoryStream image = WebUtil.TextImage(
                       ImageFormat.Gif,
                       strError,
                       Color.Black,
                       Color.Yellow,
                       10,
                       300))
            {
                Page.Response.ContentType = "image/gif";
                this.Response.AddHeader("Content-Length", image.Length.ToString());

                this.Response.AddHeader("Pragma", "no-cache");
                this.Response.AddHeader("Cache-Control", "no-store, no-cache, must-revalidate, post-check=0, pre-check=0");
                this.Response.AddHeader("Expires", "0");

                FlushOutput flushdelegate = new FlushOutput(MyFlushOutput);

                image.Seek(0, SeekOrigin.Begin);
                StreamUtil.DumpStream(image, Response.OutputStream, flushdelegate);
            }
            Response.Flush();
            Response.End();
        }
    }
Esempio n. 19
0
    void GetReportFile(string strUrl, string strFormat)
    {
        string strError = "";

        if (string.IsNullOrEmpty(app.ReportDir) == true)
        {
            strError = "dp2OPAC 尚未配置报表目录";
            goto ERROR1;
        }

        {
            // 检查路径的第一级
            string strFirstLevel = GetFirstLevel(strUrl);

            // 观察当前用户是否具有管辖这个分馆的权限
            if (
                string.IsNullOrEmpty(strFirstLevel) == false &&
                // sessioninfo.Channel != null &&
                (
                sessioninfo.GlobalUser == true
                || StringUtil.IsInList(strFirstLevel, sessioninfo.LibraryCodeList) == true)
                )
            {
            }
            else
            {
                strError = "当前用户不具备查看分馆 '" + strFirstLevel + "' 的报表的权限";
                goto ERROR1;
            }
        }

#if NO
        string strLibraryCode = this.TitleBarControl1.SelectedLibraryCode;
        strLibraryCode = GetDisplayLibraryCode(strLibraryCode);

        string strReportDir = Path.Combine(app.ReportDir, strLibraryCode);
#endif
        string strReportDir = app.ReportDir;

        string strFileName = Path.Combine(strReportDir, CutLinkHead(strUrl));

        if (strFormat == "excel"
            || strFormat == "xslx"
            || strFormat == ".xslx")
        {
            strFileName = Path.Combine(Path.GetDirectoryName(strFileName),
                Path.GetFileNameWithoutExtension(strFileName) + ".xlsx");
        }

        string strOriginFileName = "";
        string strRequestExt = "";

        // 探测文件是否存在
        // patameters:
        //      strRequestFileName  请求的文件名
        //      strOriginFileName   返回 原始文件名
        //      strRequestExt       返回 请求的文件扩展名 例如 .html
        // return:
        //      -1  出错
        //      1   成功
        int nRet = DetectFileName(strFileName,
        out strOriginFileName,
        out strRequestExt,
        out strError);
        if (nRet == -1)
        {
            this.Response.Write(GetErrorString(strError));
            this.Response.End();
            return;
        }

        // 不让浏览器缓存页面
        this.Response.AddHeader("Pragma", "no-cache");
        this.Response.AddHeader("Cache-Control", "no-store, no-cache, must-revalidate, post-check=0, pre-check=0");
        this.Response.AddHeader("Expires", "0");

        string strMime = "";
        // string strExt = Path.GetExtension(strFileName);
        if (string.Compare(strRequestExt, ".rml", true) == 0)
            strMime = "text/xml";
        else
            PathUtil.GetWindowsMimeType(strRequestExt, out strMime);

        if (string.IsNullOrEmpty(strMime) == true)
            this.Response.ContentType = "text/html";
        else
            this.Response.ContentType = strMime;

        this.Response.AddHeader("Content-Disposition", "inline;filename=" + HttpUtility.UrlEncode(Path.GetFileName(strFileName)));

        string strTempFileName = "";

        if (strFileName != strOriginFileName)
        {
            string strTempDir = Path.Combine(app.DataDir, "temp");
            PathUtil.CreateDirIfNeed(strTempDir);
            strTempFileName = Path.Combine(strTempDir, "~temp_" + Guid.NewGuid().ToString());
            string strCssTemplate = @"BODY {
	FONT-FAMILY: Microsoft YaHei, Verdana, 宋体;
	FONT-SIZE: 10pt;
}

DIV.tabletitle
{
	font-size: 14pt;
	font-weight: bold;
	text-align: center;
	margin: 16pt;

	color: #444444;
}

DIV.titlecomment
{
	text-align: center;
	color: #777777;
}

DIV.createtime
{
	text-align: center;
	color: #777777;

	padding: 4pt;
}

TABLE.table
{
    	font-size: 10pt;
    	/*width: 100%;*/
	margin: auto;
	border-color: #efefef;
	border-width: 16px; 
	border-style: solid;
	border-collapse:collapse;
	background-color: #eeeeee;
}

TABLE.table TR
{

	border-color: #999999;
	border-width: 0px; 
	border-bottom-width: 1px;
	border-style: solid;
} 

TABLE.table THEAD TH 
{
	font-weight: bold;
	white-space:nowrap;
}

TABLE.table TD, TABLE.table TH 
{
	padding: 4pt;
	padding-left: 10pt;
	padding-right: 10pt;
	text-align: left;

}

%columns%

DIV.createtime
{
	text-align: center;
	font-size: 0.8em;
}";

            if (string.Compare(strRequestExt, ".html", true) == 0)
            {
                nRet = DigitalPlatform.dp2.Statis.Report.RmlToHtml(strOriginFileName,
    strTempFileName,
    strCssTemplate,
    out strError);
                if (nRet == -1)
                    goto ERROR1;
            }
            else if (string.Compare(strRequestExt, ".xlsx", true) == 0)
            {
                nRet = DigitalPlatform.dp2.Statis.Report.RmlToExcel(strOriginFileName,
    strTempFileName,
    out strError);
                if (nRet == -1)
                    goto ERROR1;
            }

            strFileName = strTempFileName;
        }

        try
        {
            using (Stream stream = File.Open(strFileName,
                FileMode.Open,
                FileAccess.ReadWrite,
                FileShare.ReadWrite))
            {
                this.Response.AddHeader("Content-Length", stream.Length.ToString());

                FlushOutput flushdelegate = new FlushOutput(MyFlushOutput);

                stream.Seek(0, SeekOrigin.Begin);

                StreamUtil.DumpStream(stream, this.Response.OutputStream,
                    flushdelegate);
            }
        }
        catch (System.Web.HttpException)
        {
            // 2016/1/14
            // 因为 Client 端切断通讯
        }
        finally
        {
            if (string.IsNullOrEmpty(strTempFileName) == false)
            {
                File.Delete(strTempFileName);
            }
        }

        this.Response.OutputStream.Flush();
        this.Response.End();
        return;
    ERROR1:
        this.Response.Write(GetErrorString(strError));
        this.Response.End();
    }
Esempio n. 20
0
        public static long DumpStream(Stream streamSource,
            Stream streamTarget,
            long lLength,
            FlushOutput flushOutputMethod)
        {
            long lWrited = 0;
            long lThisRead = 0;
            int nChunkSize = 8192;
            byte[] bytes = new byte[nChunkSize];
            while (true)
            {
                long lLeft = lLength - lWrited;
                if (lLeft > nChunkSize)
                    lThisRead = nChunkSize;
                else
                    lThisRead = lLeft;
                long n = streamSource.Read(bytes, 0, (int)lThisRead);

                if (n != 0)	// 2005/6/8
                    streamTarget.Write(bytes, 0, (int)n);

                if (flushOutputMethod != null)
                {
                    if (flushOutputMethod() == false)
                        break;
                }

                //if (n<nChunkSize)
                //	break;
                if (n <= 0)
                    break;

                lWrited += n;
            }

            return lWrited;
        }
Esempio n. 21
0
    // return:
    //      -1  出错
    //      0   成功
    //      1   暂时不能访问
    int DumpFile(string strFilename,
        string strContentType,
        out string strError)
    {
        strError = "";

        // 不让浏览器缓存页面
        this.Response.AddHeader("Pragma", "no-cache");
        this.Response.AddHeader("Cache-Control", "no-store, no-cache, must-revalidate, post-check=0, pre-check=0");
        this.Response.AddHeader("Expires", "0");

        this.Response.ContentType = strContentType;

        try
        {

            Stream stream = File.Open(strFilename,
                FileMode.Open,
                FileAccess.ReadWrite,
                FileShare.ReadWrite);
            try
            {
                this.Response.AddHeader("Content-Length", stream.Length.ToString());

                FlushOutput flushdelegate = new FlushOutput(MyFlushOutput);

                stream.Seek(0, SeekOrigin.Begin);

                StreamUtil.DumpStream(stream, this.Response.OutputStream,
                    flushdelegate);
            }
            finally
            {
                stream.Close();
            }

        }
        catch (FileNotFoundException)
        {
            strError = "文件 '" + strFilename + "' 不存在";
            return 0;
        }
        catch (DirectoryNotFoundException)
        {
            strError = "文件 '" + strFilename + "' 路径中某一级目录不存在";
            return 0;
        }
        catch (Exception ex)
        {
            strError = ex.Message;
            return -1;
        }

        return 1;
    }
 public void WriteTo(FlushOutput flushOutputDelegate, CloseOutput closeOutputDelegate, ThreadPriority priority, object to)
 {
     if (flushOutputDelegate != null)
         flushOutput += flushOutputDelegate;
     if (closeOutputDelegate != null)
         closeOutput += closeOutputDelegate;
     _writeThread = new Thread(FlushThread);
     _writeThread.Priority = priority;
     _writeThread.IsBackground = true;
     _writeThread.Start(to);
 }
Esempio n. 23
0
        // 下载对象资源
        // return:
        //      -1  出错
        //      0   304返回
        //      1   200返回
        public int DownloadObject(System.Web.UI.Page Page,
            FlushOutput flushOutputMethod,
    RmsChannelCollection channels,
    string strPath,
    bool bSaveAs,
    out string strError)
        {
            strError = "";

            WebPageStop stop = new WebPageStop(Page);

            RmsChannel channel = channels.GetChannel(this.WsUrl);

            if (channel == null)
            {
                strError = "GetChannel() Error...";
                return -1;
            }

            // strPath = boards.GetCanonicalUri(strPath);

            // 获得资源。写入文件的版本。特别适用于获得资源,也可用于获得主记录体。
            // parameters:
            //		fileTarget	文件。注意在调用函数前适当设置文件指针位置。函数只会在当前位置开始向后写,写入前不会主动改变文件指针。
            //		strStyleParam	一般设置为"content,data,metadata,timestamp,outputpath";
            //		input_timestamp	若!=null,则本函数会把第一个返回的timestamp和本参数内容比较,如果不相等,则报错
            // return:
            //		-1	出错。具体出错原因在this.ErrorCode中。this.ErrorInfo中有出错信息。
            //		0	成功
            string strMetaData = "";
            string strOutputPath;
            byte[] baOutputTimeStamp = null;

            // 获得媒体类型
            long lRet = channel.GetRes(
                strPath,
                null,	// Response.OutputStream,
                stop,
                "metadata",
                null,	// byte [] input_timestamp,
                out strMetaData,
                out baOutputTimeStamp,
                out strOutputPath,
                out strError);
            if (lRet == -1)
            {
                strError = "GetRes() '"+strPath+"' (for metadata) Error : " + strError;
                return -1;
            }

            if (Page.Response.IsClientConnected == false)
                return -1;

            // 取metadata中的mime类型信息
            Hashtable values = StringUtil.ParseMetaDataXml(strMetaData,
                out strError);

            if (values == null)
            {
                strError = "ParseMedaDataXml() Error :" + strError;
                return -1;
            }

            string strLastModifyTime = (string)values["lastmodifytime"];
            if (String.IsNullOrEmpty(strLastModifyTime) == false)
            {
                DateTime lastmodified = DateTime.Parse(strLastModifyTime);
                string strIfHeader = Page.Request.Headers["If-Modified-Since"];

                if (String.IsNullOrEmpty(strIfHeader) == false)
                {
                    DateTime isModifiedSince = DateTimeUtil.FromRfc1123DateTimeString(strIfHeader).ToLocalTime();

                    if (isModifiedSince != lastmodified)
                    {
                        // 修改过
                    }
                    else
                    {
                        // 没有修改过
                        Page.Response.StatusCode = 304;
                        Page.Response.SuppressContent = true;
                        return 0;
                    }

                }

                Page.Response.AddHeader("Last-Modified", DateTimeUtil.Rfc1123DateTimeString(lastmodified.ToUniversalTime()));
                /*
                                Page.Response.Cache.SetLastModified(lastmodified);
                                Page.Response.Cache.SetCacheability(HttpCacheability.Public);
                 * */
            }

            string strMime = (string)values["mimetype"];
            string strClientPath = (string)values["localpath"];
            if (strClientPath != "")
                strClientPath = PathUtil.PureName(strClientPath);

            // TODO: 如果是非image/????类型,都要加入content-disposition
            // 是否出现另存为对话框
            if (bSaveAs == true)
            {
                string strEncodedFileName = HttpUtility.UrlEncode(strClientPath, Encoding.UTF8);
                Page.Response.AddHeader("content-disposition", "attachment; filename=" + strEncodedFileName);
            }

            /*
            Page.Response.AddHeader("Accept-Ranges", "bytes");
            Page.Response.AddHeader("Last-Modified", "Wed, 21 Nov 2007 07:10:54 GMT");
             * */

            // 用 text/plain IE XML 搜索google
            // http://support.microsoft.com/kb/329661
            // http://support.microsoft.com/kb/239750/EN-US/
            /*
To use this fix, you must add the following registry value to the key listed below: 
Key: HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings

Value name: IsTextPlainHonored
Value type: DWORD
Value data: HEX 0x1 
             * */

            /*

            Page.Response.CacheControl = "no-cache";    // 如果不用此句,text/plain会被当作xml文件打开
            Page.Response.AddHeader("Pragma", "no-cache");
            Page.Response.AddHeader("Cache-Control", "no-store, no-cache, must-revalidate, post-check=0, pre-check=0");
//            Page.Response.AddHeader("Cache-Control", "public");
            Page.Response.AddHeader("Expires", "0");
            Page.Response.AddHeader("Content-Transfer-Encoding", "binary");
             * */


            // 设置媒体类型
            if (strMime == "text/plain")
                strMime = "text";
            Page.Response.ContentType = strMime;

            string strSize = (string)values["size"];
            if (String.IsNullOrEmpty(strSize) == false)
            {
                Page.Response.AddHeader("Content-Length", strSize);
            }

            if (Page.Response.IsClientConnected == false)
                return -1;

            // 传输数据
            lRet = channel.GetRes(
                strPath,
                Page.Response.OutputStream,
                flushOutputMethod,
                stop,
                "content,data",
                null,	// byte [] input_timestamp,
                out strMetaData,
                out baOutputTimeStamp,
                out strOutputPath,
                out strError);
            if (lRet == -1)
            {
                strError = "GetRes() (for res) Error : " + strError;
                return -1;
            }

            return 1;
        }