private void Application_BeginRequest(Object source, EventArgs e)
{
HttpApplication Application = (HttpApplication)source;
HttpResponse Response = Application.Context.Response;
#region 判断域名是二级城市域名，如果是则重定向到相应目录
string oldUrl = Application.Context.Request.Url.ToString().ToLower();
//EventLog.WriteLog(oldUrl);
//url中含有/city/sanmenxia，错误地址，不能直接访问，进行替换
//oldUrl = oldUrl.Replace("/city/sanmenxia", "");
//解决在分站访问当页面路径唯有文件名情况下。系统自动会加上/city/sanmenxia而导致的地址栏中实际显示的路径与访问的虚拟路径不同的问题
if (oldUrl.Contains("/city/sanmenxia"))
{
//直接重定向
Application.Context.Response.Redirect(oldUrl.Replace("/city/sanmenxia", ""));
}
if (UrlRewriteRules.OldCitySiteUrl.Contains("," + Application.Context.Request.Url.Host + ","))
{
//EventLog.WriteLog(oldUrl);
string newUrl = oldUrl.Replace("http://" + Application.Context.Request.Url.Host, UrlRewriteRules.NewCitySiteUrl);
//解决访问的链接地址没有文件名的情况下，httpmodule会处理两次的情况
if (FileManager.GetFileExtension(newUrl).IsNullOrEmpty())
{
if (!newUrl.EndsWith("/"))
{
newUrl += "/";
}
newUrl += "index.aspx";
}
//EventLog.WriteLog(newUrl);
Application.Context.RewritePath(newUrl, false);
return;
}
#endregion
if (!FileManager.Exists(Application.Context.Request.PhysicalPath, FsoMethod.All))
{
//EventLog.WriteLog(Application.Context.Request.PhysicalPath);
//获取请求的URL
string path = Application.Context.Request.RawUrl;
//EventLog.WriteLog(path);
//去除路径中?后面的内容
if (path.IndexOf("?") >= 0)
{
path = Utility.Left(path, path.IndexOf("?"));
}
//EventLog.WriteLog(path);
//EventLog.WriteLog(path.IndexOf("?").ToString());
List <PathMapping> list = UrlRewriteRules.UrlRewrite();
//EventLog.WriteLog("开始1");
foreach (PathMapping pathMapping in list)
{
//EventLog.WriteLog("开始2");
string pattern = @"^" + pathMapping.VirtualPath + "$";
string realPathRules = pathMapping.RealPath;
//匹配url规则
Regex regex = new Regex(pattern, RegexOptions.IgnoreCase);
//EventLog.WriteLog(regex.IsMatch(path).ToString());
if (regex.IsMatch(path)) //如果匹配成功
{
//获取匹配集合
Match mc = regex.Match(path);
//EventLog.WriteLog("mc.Groups.Count:" + mc.Groups.Count + "<br/>");
string realPath = "";
for (int i = 0; i < mc.Groups.Count; i++)
{
//EventLog.WriteLog("continue前");
if (i == 0) //第一个匹配串是整串匹配，没用，丢弃
{
continue;
}
//EventLog.WriteLog("continue后");
//从第二个匹配字串起，替换$1,$2,$3这样url串中的参数
realPath = realPathRules.Replace("$" + i.ToString(), mc.Groups[i].Value);
//realPathRules值重置，因为如果是多个参数$1,$2,$3,不重置，则上行的realPathRules仍然是原来的$1,$2,$3,循环替换就没有成功
realPathRules = realPath;
//EventLog.WriteLog(realPath);
}
//EventLog.WriteLog(realPath);
//重写url
Application.Context.RewritePath(realPath);
return;
}
}
}
}