When I was working on a project some time ago, I was always looking for a method to dynamically generate HTM pages. The configuration was simple and had nothing to do with the project.
I finally found it. I only need to perform simple configuration in Web. config to dynamically generate static pages without affecting URL redirection. In web. config, You need to note the configuration items <configuration>, <rewriteconfig>, <? XML version = "1.0" encoding = "UTF-8"?>
<! --
Note: In addition to manually editing this file, you can also use
Web management tools to configure applications Program . You can use
"Website"-> "ASP. NET configuration" option.
The complete list of settings and comments is displayed in
In machine. config. Comments, this file is usually located in
\ Windows \ Microsoft. NET \ framework \ v2.x \ config
-->
<Configuration>
<! -- Rul rewrite start -->
<Configsections>
<Section name = "rewriterconfig" type = "urlrewriter. config. rewriterconfigserializersectionhandler, urlrewriter"/>
</Configsections>
<Rewriterconfig>
<Rules>
<! -- Address rewriting rule -->
<! -- Homepage, go to static page -->
<Rewriterrule>
<Type> static </type>
<Lookfor> ~ /Default \. aspx </lookfor>
<Sendto> ~ /Default.htm </sendto>
</Rewriterrule>
<! -- Level 2 page, go to dynamic page -->
<Rewriterrule>
<Type> dynamic </type>
<Lookfor> ~ /List \. aspx </lookfor>
<Sendto> ~ /Show. aspx </sendto>
</Rewriterrule>
</Rules>
</Rewriterconfig>
<! -- Rul rewrite ended -->
<Appsettings/>
<Connectionstrings/>
<System. Web>
<! --
Set compilation DEBUG = "true" to insert the debugging symbol
Compiled pages. However, this
Performance is affected, so this value is only available during development.
Set to true.
-->
<Httpmodules>
<! -- URL rewriting -->
<Add type = "urlrewriter. modulerewriter, urlrewriter" name = "modulerewriter"/>
</Httpmodules>
<Httphandlers>
<! -- Generate static pages -->
<Add verb = "*" Path = "*. aspx" Validate = "false" type = "urlrewriter. rewriterfactoryhandler, urlrewriter"/>
</Httphandlers>
<Compilation DEBUG = "false"/>
<! --
In the <authentication> section, you can configure
Security Authentication mode,
To identify the user.
-->
<Authentication mode = "forms"/>
<! --
If an unprocessed error occurs during request execution,
You can configure the corresponding processing steps in the <mermerrors> section. Specifically,
This section allows developers to configure
HTML error page to be displayed
To replace the error stack trace.
<Customerrors mode = "remoteonly" defaultredirect = "genericerrorpage.htm">
<Error statuscode = "403" Redirect = "noaccess.htm"/>
<Error statuscode = "404" Redirect = "filenotfound.htm"/>
</Customerrors>
-->
<Globalization requestencoding = "UTF-8" responseencoding = "UTF-8"/>
</System. Web>
</Configuration>
Two key classes are modulerewriter and rewriterfactoryhandler.
The modulerewriter class is used for URL redirection, Code As follows:
Modulerewriter
Using system;
Using system. Text. regularexpressions;
Using system. configuration;
Using urlrewriter. config;
Using system. Data;
Using system. Web;
Using system. Web. UI;
Namespace urlrewriter
{
/** // <Summary>
/// Provides a rewriting httpmodule.
/// </Summary>
Public class modulerewriter: basemodulerewriter
{
/** // <Summary>
/// This method is called during the module's beginrequest event.
/// </Summary>
/// <Param name = "requestedrawurl"> the rawurl being requested (required des path and querystring). </param>
/// <Param name = "app"> the httpapplication instance. </param>
Protected override void rewrite (string requestedpath, system. Web. httpapplication APP)
{
// Only valid for the file suffix ASPX page
If (requestedpath. indexof (". aspx ")! =-1)
{
Httpcontext = app. context;
// Get the configuration rules
Rewriterrulecollection rules = rewriterconfiguration. getconfig (). Rules;
// Iterate through each rule
For (INT I = 0; I <rules. Count; I ++)
{
// Get the pattern to look for, and resolve the URL (convert ~ Into the appropriate directory)
String lookfor = "^" + rewriterutils. resolveurl (httpcontext. Request. applicationpath, rules
. Lookfor) + "$ ";
// Create a RegEx (note that ignorecase is set)
RegEx Re = new RegEx (lookfor, regexoptions. ignorecase );
// See if a match is found
If (Re. ismatch (requestedpath ))
{
// The ASPX page is redirected to the HTM page and the HTTP data transmission mode is "get"
If (Rules. Type = webtype. Static & App. Context. Request. requesttype = "get ")
{
// Static Page path
String htmlweb = rewriterutils. resolveurl (httpcontext. Request. applicationpath, rules. Sendto );
// Last modification time of the Static Page
Datetime dt = system. Io. file. getlastwritetime (httpcontext. server. mappath (htmlweb ));
// Compare the current time with the static page generation time. If the time is less than one hour, redirect to the static page
If (datetime. Compare (datetime. Now. addhours (-1), DT) <= 0)
{
Requestedpath = htmlweb;
}
}
Else
{
Requestedpath = Rules. Sendto;
}
// Rewrite the URL
Rewriterutils. rewriteurl (httpcontext, requestedpath );
Break; // exit the For Loop
}
}
}
}
}
}
The createhtmfactoryhandler class is used to generate static pages. The Code is as follows:
Createhtmfactoryhandler
Using system;
Using system. IO;
Using system. Web. UI;
Using system. Web;
Using urlrewriter. config;
Using system. configuration;
Using system. Text. regularexpressions;
Namespace urlrewriter
{
/** // <Summary>
/// Generate a static page based on the Web. config configuration information
/// </Summary>
Public class createhtmfactoryhandler: ihttphandlerfactory
{
/** // <Summary>
///
/// </Summary>
/// <Param name = "context"> httpcontext class instance, which provides internal server objects (such as request, response, session, and server) used to provide services for HTTP requests) </param>
/// <Param name = "requesttype"> HTTP data transmission method (get or post) used by the client </param>
/// <Param name = "url"> rawurl of the requested resource. </Param>
/// <Param name = "pathtranslated"> physicalapplicationpath of the requested resource </param>
/// <Returns> return the instance of the class implementing the ihttphandler interface </returns>
Public Virtual ihttphandler gethandler (httpcontext context, string requesttype, string URL, string pathtranslated)
{
If (requesttype = "get ")
{
// Get the configuration rules
Rewriterrulecollection rules = rewriterconfiguration. getconfig (). Rules;
// Iterate through each rule
For (INT I = 0; I <rules. Count; I ++)
{
// Get the pattern to look for, and resolve the URL (convert ~ Into the appropriate directory)
String lookfor = "^" + rewriterutils. resolveurl (context. Request. applicationpath, rules. Lookfor) + "$ ";
// Create a RegEx (note that ignorecase is set)
RegEx Re = new RegEx (lookfor, regexoptions. ignorecase );
// See if a match is found
If (Re. ismatch (URL) & rules . Type = webtype. Static)
{
// Obtain the physical path of the static page to be generated
String physicsweb = context. server. mappath (rewriterutils. resolveurl (context. Request. applicationpath, rules. Sendto ));
// Set the response Filter
Context. response. Filter = new responsefilter (context. response. filter, physicsweb );
Break;
}
}
}
// Get the compiled instance
Return pageparser. getcompiledpageinstance (URL, pathtranslated, context );
}
Public Virtual void releasehandler (ihttphandler handler)
{
}
}
}
The above are two main classes and some auxiliary classes. I have attached the test projectSource codeAnd examples.
Click here to download: source code and example
I am modifying an open-source project (urlrewrite) to implement the above functions. For more information about urlrewrite, see URL rewriting in ASP. NET.
