// 摘要:
// 通过实现 System.Web.IHttpHandler 接口的自定义 HttpHandler 启用 HTTP Web 请求的处理。
//
// 参数:
// context:
// System.Web.HttpContext 对象，它提供对用于为 HTTP 请求提供服务的内部服务器对象（如 Request、Response、Session
// 和 Server）的引用。
public void ProcessRequest(HttpContext context)
{
string sendToUrl = context.Request.Url.PathAndQuery;
string applicationPath = context.Request.PhysicalApplicationPath;
//检测是否为Ajax调用
bool AjaxProcess = WebHelper.GetRequestParam <bool>(context.Request, "X-Ajax-Process", false);
if (!AjaxProcess && context.Request.RequestType == "GET")
{
var config = StaticPageConfiguration.GetConfig();
//判断config配置信息
if (config != null && config.Enabled)
{
bool isMatch = false;
// iterate through the rules
foreach (StaticPageRule rule in config.Rules)
{
// get the pattern to look for, and Resolve the Url (convert ~ into the appropriate directory)
string lookFor = "^" + RewriterUtils.ResolveUrl(context.Request.ApplicationPath, rule.LookFor) + "$";
// Create a regex (note that IgnoreCase is set...)
Regex reg = new Regex(lookFor, RegexOptions.IgnoreCase);
if (reg.IsMatch(sendToUrl))
{
isMatch = true;
// match found - do any replacement needed
string staticUrl = RewriterUtils.ResolveUrl(context.Request.ApplicationPath, reg.Replace(sendToUrl, rule.WriteTo));
string staticFile = context.Server.MapPath(staticUrl);
//将域名进行替换
staticFile = staticFile.Replace("{domain}", context.Request.Url.Authority);
//需要生成静态页面
if (!File.Exists(staticFile)) //静态页面不存在
{
var filter = new ResponseFilter(context.Response.Filter, staticFile, rule.ValidateString, config.Replace, config.Extension);
context.Response.Filter = filter;
break;
}
else
{
//静态页面存在
FileInfo file = new FileInfo(staticFile);
//按秒检测页面重新生成
int span = (int)DateTime.Now.Subtract(file.LastWriteTime).TotalSeconds;
if (rule.Timeout > 0 && span >= rule.Timeout) //静态页面过期
{
var filter = new ResponseFilter(context.Response.Filter, staticFile, rule.ValidateString, config.Replace, config.Extension);
context.Response.Filter = filter;
break;
}
//检测是否需要更新
else if (!string.IsNullOrEmpty(rule.UpdateFor) && CheckUpdate(context, rule.UpdateFor))
{
var filter = new ResponseFilter(context.Response.Filter, staticFile, rule.ValidateString, config.Replace, config.Extension);
context.Response.Filter = filter;
break;
}
else
{
//设置格式
SetContentType(context, file.Extension);
//将文件写入流中
context.Response.Clear();
context.Response.WriteFile(staticFile);
//结束请求
context.Response.Close();
context.ApplicationInstance.CompleteRequest();
}
}
}
}
//如果没有匹配上
if (!isMatch)
{
//处理updates
if (config.Replace && !string.IsNullOrEmpty(config.Extension))
{
var filter = new AspNetFilter(context.Response.Filter, config.Replace, config.Extension);
context.Response.Filter = filter;
}
}
}
}
//进行错误处理，如果出错，则转到原有的静态页面
try
{
//if (sendToUrl.IndexOf('?') > 0) sendToUrl = sendToUrl.Substring(0, sendToUrl.IndexOf('?'));
//IHttpHandler handler = BuildManager.CreateInstanceFromVirtualPath(sendToUrl, typeof(Page)) as IHttpHandler;
string sendToUrlLessQString;
RewriterUtils.RewriteUrl(context, sendToUrl, out sendToUrlLessQString, out applicationPath);
IHttpHandler handler = PageParser.GetCompiledPageInstance(sendToUrlLessQString, applicationPath, context);
handler.ProcessRequest(context);
}
catch (ThreadAbortException) { }
catch (Exception)
{
throw;
}
}
// 摘要:
// 通过实现 System.Web.IHttpHandler 接口的自定义 HttpHandler 启用 HTTP Web 请求的处理。
//
// 参数:
// context:
// System.Web.HttpContext 对象，它提供对用于为 HTTP 请求提供服务的内部服务器对象（如 Request、Response、Session
// 和 Server）的引用。
public void ProcessRequest(HttpContext context)
{
string sendToUrl = context.Request.Url.PathAndQuery;
string applicationPath = context.Request.PhysicalApplicationPath;
//检测是否为Ajax调用
bool AjaxProcess = WebHelper.GetRequestParam<bool>(context.Request, "X-Ajax-Process", false);
if (!AjaxProcess && context.Request.RequestType == "GET")
{
var config = StaticPageConfiguration.GetConfig();
//判断config配置信息
if (config != null && config.Enabled)
{
bool isMatch = false;
// iterate through the rules
foreach (StaticPageRule rule in config.Rules)
{
// get the pattern to look for, and Resolve the Url (convert ~ into the appropriate directory)
string lookFor = "^" + RewriterUtils.ResolveUrl(context.Request.ApplicationPath, rule.LookFor) + "$";
// Create a regex (note that IgnoreCase is set...)
Regex reg = new Regex(lookFor, RegexOptions.IgnoreCase);
if (reg.IsMatch(sendToUrl))
{
isMatch = true;
// match found - do any replacement needed
string staticUrl = RewriterUtils.ResolveUrl(context.Request.ApplicationPath, reg.Replace(sendToUrl, rule.WriteTo));
string staticFile = context.Server.MapPath(staticUrl);
//将域名进行替换
staticFile = staticFile.Replace("{domain}", context.Request.Url.Authority);
//需要生成静态页面
if (!File.Exists(staticFile)) //静态页面不存在
{
var filter = new ResponseFilter(context.Response.Filter, staticFile, rule.ValidateString, config.Replace, config.Extension);
context.Response.Filter = filter;
break;
}
else
{
//静态页面存在
FileInfo file = new FileInfo(staticFile);
//按秒检测页面重新生成
int span = (int)DateTime.Now.Subtract(file.LastWriteTime).TotalSeconds;
if (rule.Timeout > 0 && span >= rule.Timeout) //静态页面过期
{
var filter = new ResponseFilter(context.Response.Filter, staticFile, rule.ValidateString, config.Replace, config.Extension);
context.Response.Filter = filter;
break;
}
//检测是否需要更新
else if (!string.IsNullOrEmpty(rule.UpdateFor) && CheckUpdate(context, rule.UpdateFor))
{
var filter = new ResponseFilter(context.Response.Filter, staticFile, rule.ValidateString, config.Replace, config.Extension);
context.Response.Filter = filter;
break;
}
else
{
//设置格式
SetContentType(context, file.Extension);
//将文件写入流中
context.Response.Clear();
context.Response.WriteFile(staticFile);
//结束请求
context.Response.Close();
context.ApplicationInstance.CompleteRequest();
}
}
}
}
//如果没有匹配上
if (!isMatch)
{
//处理updates
if (config.Replace && !string.IsNullOrEmpty(config.Extension))
{
var filter = new AspNetFilter(context.Response.Filter, config.Replace, config.Extension);
context.Response.Filter = filter;
}
}
}
}
//进行错误处理，如果出错，则转到原有的静态页面
try
{
//if (sendToUrl.IndexOf('?') > 0) sendToUrl = sendToUrl.Substring(0, sendToUrl.IndexOf('?'));
//IHttpHandler handler = BuildManager.CreateInstanceFromVirtualPath(sendToUrl, typeof(Page)) as IHttpHandler;
string sendToUrlLessQString;
RewriterUtils.RewriteUrl(context, sendToUrl, out sendToUrlLessQString, out applicationPath);
IHttpHandler handler = PageParser.GetCompiledPageInstance(sendToUrlLessQString, applicationPath, context);
handler.ProcessRequest(context);
}
catch (ThreadAbortException) { }
catch (Exception)
{
throw;
}
}
