// 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;
}
// 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);
}
// 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);
}
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);
}
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);
}
// 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);
}
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();
}
// 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);
}
//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();
}
}
// 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);
}
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();
}
// 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;
}
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();
}
// 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;
}
// 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;
}
// 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;
}
// 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;
}
//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();
}
}
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();
}
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;
}
// 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);
}
// 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;
}
