public static bool PrepareEnvironment(Page page,
ref OpacApplication app,
ref SessionInfo sessioninfo)
{
string strErrorInfo = "";
// 获得app对象
// 并检查系统错误字符串
// 2008/6/6
// 错误信息采用两级存放策略。
// 如果LibraryAppliation对象已经存在，则采用其ErrorInfo成员的值；
// 否则，采用Application["errorinfo"]值
app = (OpacApplication)page.Application["app"];
if (app == null)
{
strErrorInfo = (string)page.Application["errorinfo"];
if (String.IsNullOrEmpty(strErrorInfo) == true)
{
strErrorInfo = "app == null";
}
page.Response.Write(HttpUtility.HtmlEncode(strErrorInfo).Replace("\r\n", "<br/>"));
page.Response.End();
return(false);
}
else
{
strErrorInfo = app.GlobalErrorInfo;
if (String.IsNullOrEmpty(strErrorInfo) == false)
{
page.Response.Write(HttpUtility.HtmlEncode(strErrorInfo).Replace("\r\n", "<br/>"));
page.Response.End();
return(false);
}
if (app.XmlLoaded == false)
{
strErrorInfo =
"<html><body><pre>" +
HttpUtility.HtmlEncode("OPAC 初始化时装载 XmlDefs 失败，可能的原因是：OPAC 所依赖的 dp2Library 服务模块尚未启动，或 OPAC 代理帐户不存在、权限不够或密码被修改...。\r\n具体出错原因请察看 dp2OPAC 数据目录 log 子目录下的当日日志文件(log_????????.txt)，并及时排除故障。OPAC 系统将在稍后自动重试装载 XmlDefs。");
page.Response.Write(strErrorInfo);
if (page.Request.UserHostAddress == "localhost" ||
page.Request.UserHostAddress == "::1")
{
page.Response.Write("\r\n\r\n");
// 输出当天日志文件内容
app.DumpErrorLog(page);
}
page.Response.Write("</pre></body></html>");
page.Response.End();
return(false);
}
}
/*
* string strErrorInfo = (string)page.Application["errorinfo"];
*
* if (String.IsNullOrEmpty(strErrorInfo) == false)
* {
* page.Response.Write(HttpUtility.HtmlEncode(strErrorInfo).Replace("\r\n","<br/>"));
* page.Response.End();
* return false; // error
* }*/
// 获得SessionInfo
sessioninfo = (SessionInfo)page.Session["sessioninfo"];
if (sessioninfo == null)
{
/*
* strErrorInfo = "sessioninfo == null";
* page.Response.Write(strErrorInfo);
* page.Response.End();
* return false;
* */
// 2013/12/7
string strClientIP = HttpContext.Current.Request.UserHostAddress.ToString();
// 增量计数
if (app != null)
{
long v = app.IpTable.IncIpCount(strClientIP, 1);
if (v >= app.IpTable.MAX_SESSIONS_PER_IP)
{
app.IpTable.IncIpCount(strClientIP, -1);
strErrorInfo = "同一 IP 前端数量超过配额 " + app.IpTable.MAX_SESSIONS_PER_IP.ToString() + "。请稍后再试。";
page.Response.StatusCode = 403;
// page.Response.StatusDescription = strErrorInfo;
page.Response.Write(strErrorInfo);
page.Response.End();
// TODO: 也可以 redirect 引导到一个说明性的页面
return(false);
}
}
try
{
sessioninfo = new SessionInfo(app);
sessioninfo.ClientIP = strClientIP;
page.Session["sessioninfo"] = sessioninfo;
}
catch (Exception ex)
{
strErrorInfo = "PrepareEnvironment()创建Session出现异常: " + ExceptionUtil.GetDebugText(ex);
page.Response.Write(strErrorInfo);
page.Response.End();
return(false);
}
}
string strLang = (string)page.Session["lang"];
sessioninfo.ChannelLang = strLang;
if (page is MyWebPage)
{
(page as MyWebPage).LoadCookiesLoginToSession();
}
return(true);
}