protected void Page_Load(object sender, EventArgs e)
{
if (WebUtil.PrepareEnvironment(this,
ref app,
ref sessioninfo) == false)
{
return;
}
/*
* // 是否登录?
* if (sessioninfo.UserID == "")
* {
* sessioninfo.LoginCallStack.Push(Request.RawUrl);
* Response.Redirect("login.aspx", true);
* return;
* }
* */
if (sessioninfo.UserID == "")
{
sessioninfo.UserID = "public";
sessioninfo.IsReader = false;
}
string strError = "";
int nRet = 0;
// string strAction = Request.QueryString["action"];
string strURI = Request.QueryString["uri"];
string strStyle = Request.QueryString["style"];
string strBiblioRecPath = Request.QueryString["biblioRecPath"];
LibraryChannel channel = null;
#if CHANNEL_POOL
channel = sessioninfo.GetChannel(true /*, sessioninfo.Parameters*/);
#else
channel = sessioninfo.GetChannel(false);
#endif
try
{
Uri uri = GetUri(strURI);
if (uri != null &&
(uri.Scheme == "http" || uri.Scheme == "https"))
{
// 以下是处理 dp2 系统外部的 URL
if (StringUtil.IsInList("hitcount", strStyle) == true)
{
#if NO
if (app.SearchLog != null)
{
long lHitCount = app.SearchLog.GetHitCount(strURI);
OpacApplication.OutputImage(this,
Color.FromArgb(200, Color.Blue),
lHitCount.ToString());
this.Response.End();
return;
}
OpacApplication.OutputImage(this,
Color.FromArgb(200, Color.Blue),
"*"); // 星号表示尚未启用外部链接计数功能
this.Response.End();
#endif
int nFontSize = 8;
string strFontSize = Request.QueryString["fontSize"];
if (string.IsNullOrEmpty(strFontSize) == false)
{
Int32.TryParse(strFontSize, out nFontSize);
}
if (StringUtil.IsInList("hitcount", app.SearchLogEnable) == false)
{
OpacApplication.OutputImage(this,
Color.FromArgb(200, Color.Blue),
"*",
nFontSize); // 星号表示尚未启用外部链接计数功能
this.Response.End();
return;
}
// TODO: 这里可以优化一下，当 lValue == -1 的时候，可以为 App 设置一个标志，以后就不再为外部 URL 请求 dp2library 的 HitCounver() API 了
string strText = "";
long lValue = 0;
long lRet = app.GetHitCount(channel,
strBiblioRecPath + "|" + strURI,
out lValue,
out strError);
if (lRet == -1)
{
strText = strError;
}
else
{
strText = (lValue == -1 ? "*" : lValue.ToString()); // * 表示 dp2library 中 mongodb 没有启用
}
OpacApplication.OutputImage(this,
Color.FromArgb(200, Color.Blue),
strText,
nFontSize);
// 不但返回图像，而且滞后增量一次
if (StringUtil.IsInList("inc", strStyle) == true)
{
lRet = app.IncHitCount(channel,
strBiblioRecPath + "|" + strURI,
this.Request.UserHostAddress,
false, // 是否要创建日志
out strError);
if (lRet == -1)
{
Response.Write("IncHitCount 出错: " + strError);
this.Response.End();
return;
}
}
this.Response.End();
return;
}
else
{
#if NO
if (app.SearchLog != null)
{
app.SearchLog.IncHitCount(strURI);
}
#endif
if (StringUtil.IsInList("hitcount", app.SearchLogEnable) == false)
{
this.Response.Redirect(strURI, true);
return;
}
long lRet = app.IncHitCount(channel,
strBiblioRecPath + "|" + strURI,
this.Request.UserHostAddress,
StringUtil.IsInList("log", app.SearchLogEnable), // 是否要创建日志
out strError);
if (lRet == -1)
{
Response.Write("IncHitCount 出错: " + strError);
this.Response.End();
}
else
{
this.Response.Redirect(strURI, true);
}
return;
}
}
// *** 以下是处理 dp2 系统内部对象
// TODO: dp2 系统内部对象总是有访问计数功能的，是否需要设计为 SearchLogEnable 中的 hitcount 具备与否对它无影响?
string strSaveAs = Request.QueryString["saveas"];
bool bSaveAs = false;
if (strSaveAs == "true")
{
bSaveAs = true;
}
// FlushOutput flushdelegate = new FlushOutput(MyFlushOutput);
// this.Response.BufferOutput = false;
this.Server.ScriptTimeout = 10 * 60 * 60; // 10 个小时
nRet = app.DownloadObject(
this,
// flushdelegate,
// sessioninfo.Channels,
channel,
strURI,
bSaveAs,
strStyle,
out strError);
if (nRet == -1)
{
// Response.Write(strError);
OpacApplication.OutputImage(Page,
Color.FromArgb(200, Color.DarkRed),
strError);
}
Response.End();
return;
}
finally
{
#if CHANNEL_POOL
sessioninfo.ReturnChannel(channel);
#endif
}
}