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ASP. NET static page generation

Source: Internet
Author: User
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ASP. NET static page generation Implementation Method
<! -- Main. aspx -->
<% @ Page Language = "C #" %>
<% @ Import namespace = system. Io %>
<SCRIPT runat = "server">
Protected override void oninit (eventargs E)
{
Int ID;
Try
{
Id = int. parse (request. querystring ["ID"]);
}
Catch
{
Throw (new exception ("No ID specified on the page "));
}

String filename = server. mappath ("statichtml _" + ID + ". html ");

// Try to read an existing file
Stream S = getfilestream (filename );
If (s! = NULL) // if the file exists and is read successfully
{
Using (s)
{
Stream2stream (S, response. outputstream );
Response. End ();
}
}


// Call main_execute and obtain its output
Stringwriter Sw = new stringwriter ();
Server. Execute ("main_execute.aspx", SW );

String content = Sw. tostring ();

// Output to the client
Response. Write (content );
Response. Flush ();

// Write the file

Try
{
Using (filestream FS = new filestream (filename, filemode. Create, fileaccess. Write, fileshare. Write ))
{
Using (streamwriter = new streamwriter (FS, response. contentencoding ))
{
Streamwriter. Write (content );
}
}
}
Finally
{
// Response. End ();
}
}
Static public void stream2stream (Stream SRC, stream DST)
{
Byte [] Buf = new byte [1, 4096];
While (true)
{
Int c = SRC. Read (BUF, 0, Buf. Length );
If (C = 0)
Return;
DST. Write (BUF, 0, C );
}
}
Public stream getfilestream (string filename)
{
Try
{
Datetime dt = file. getlastwritetime (filename );
Timespan Ts = DT-datetime. now;
If (TS. totalhours> 1)
Return NULL; // expired after 1 hour
Return new filestream (filename, filemode. Open, fileaccess. Read, fileshare. Read );
}
Catch
{
Return NULL;
}
}
</SCRIPT>

<! -- Main_execute.aspx -->
<% @ Page Language = "C #" %>
<HTML>
<Head runat = "server">
<Title> untitled page </title>
</Head>
<Body>
ID:
<% = Request. querystring ["ID"] %>
</Body>
</Html>
<! -- Main. aspx -->
<% @ Page Language = "C #" %>
<% @ Import namespace = system. Io %>
<SCRIPT runat = "server">
Protected override void oninit (eventargs E)
{
Int ID;
Try
{
Id = int. parse (request. querystring ["ID"]);
}
Catch
{
Throw (new exception ("No ID specified on the page "));
}

String filename = server. mappath ("statichtml _" + ID + ". html ");

// Try to read an existing file
Stream S = getfilestream (filename );
If (s! = NULL) // if the file exists and is read successfully
{
Using (s)
{
Stream2stream (S, response. outputstream );
Response. End ();
}
}


// Call main_execute and obtain its output
Stringwriter Sw = new stringwriter ();
Server. Execute ("main_execute.aspx", SW );

String content = Sw. tostring ();

// Output to the client
Response. Write (content );
Response. Flush ();

// Write the file

Try
{
Using (filestream FS = new filestream (filename, filemode. Create, fileaccess. Write, fileshare. Write ))
{
Using (streamwriter = new streamwriter (FS, response. contentencoding ))
{
Streamwriter. Write (content );
}
}
}
Finally
{
// Response. End ();
}
}
Static public void stream2stream (Stream SRC, stream DST)
{
Byte [] Buf = new byte [1, 4096];
While (true)
{
Int c = SRC. Read (BUF, 0, Buf. Length );
If (C = 0)
Return;
DST. Write (BUF, 0, C );
}
}
Public stream getfilestream (string filename)
{
Try
{
Datetime dt = file. getlastwritetime (filename );
Timespan Ts = DT-datetime. now;
If (TS. totalhours> 1)
Return NULL; // expired after 1 hour
Return new filestream (filename, filemode. Open, fileaccess. Read, fileshare. Read );
}
Catch
{
Return NULL;
}
}
</SCRIPT>

<! -- Main_execute.aspx -->
<% @ Page Language = "C #" %>
<HTML>
<Head runat = "server">
<Title> untitled page </title>
</Head>
<Body>
ID:
<% = Request. querystring ["ID"] %>
</Body>
</Html>

The principle is as follows.

Main_execute.aspx is the HTML page generated.

Now we use main. aspx to cache it.

The process is as follows:

First, calculate the file name based on the page parameters. (This example is based on request. querystring ["ID)

Try to read the cached file. If successful, then response. End ();

If not:

Use server. Execute to call main_execute.aspx and obtain its results.

After the content is obtained, it is immediately output to the client.

Finally, write the content into the file and provide it to the next cache.

This article is an English version of an article which is originally in the Chinese language on aliyun.com and is provided for information purposes only. This website makes no representation or warranty of any kind, either expressed or implied, as to the accuracy, completeness ownership or reliability of the article or any translations thereof. If you have any concerns or complaints relating to the article, please send an email, providing a detailed description of the concern or complaint, to info-contact@alibabacloud.com. A staff member will contact you within 5 working days. Once verified, infringing content will be removed immediately.

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