网络映射的概念 ASP.NET中实现访问链接的静态地址映射

ASP.NET中实现访问链接的静态地址映射  

　　protected void Application_BeginRequest(Object sender EventArgs e) {                string strCurrentPath;        strCurrentPath = Request Path;        //make sure that it ends with aspx   This is some quick validation on the path         //This will shortcut processing for images and other files (WebResource axd for example)         if(System IO Path GetExtension(strCurrentPath) EndsWith(            aspx true System Globalization CultureInfo InvariantCulture)) {            string strCustomPath;            string qString = Request QueryString ToString();            if(qString != string Empty)                qString = & + qString;            strCurrentPath = strCurrentPath ToLowerInvariant();            string appRoot = GetAppRoot(strCurrentPath);            //string pageName = ;            // the URL contains this folder name            //Response Write(strCurrentPath);            if(strCurrentPath IndexOf( catalog/ StringComparison InvariantCultureIgnoreCase) > ) {

　　appRoot = appRoot Replace( catalog/ );                strCustomPath = appRoot + catalog aspx?guid= + System IO Path GetFileNameWithoutExtension(strCurrentPath) + qString;

　　// rewrite the URL                Context RewritePath(strCustomPath false);            }            else if(strCurrentPath IndexOf( product/ StringComparison InvariantCultureIgnoreCase) > ) {                appRoot = appRoot Replace( product/ );

　　strCustomPath = appRoot + product aspx?guid= + System IO Path GetFileNameWithoutExtension(strCurrentPath);                // rewrite the URL