| Using AJAX To Update Data On A Web Page |
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| Written by David Hollingworth | |
| Thursday, 19 July 2007 | |
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Page 4 of 5 The Responder ScriptThe job of the responder script is to send the XML file back to the web browser when the browser makes a request for it. I used the Ruby language for my script and here it is: #!/usr/bin/ruby
# Define any constants # XMLFile = 'The name and path of your XML file goes in here. E.g. /home/me/myfile.xml'
# Print the headers # puts "Content-type: text/xml" puts "Cache-Control: no-cache, must-revalidate" puts "Expires: Mon, 26 Jul 1997 05:00:00 GMT" puts "\n\n"
# Open the file and loop through its contents putting them to the output # open(XMLFile).each { |f| print f } exit This file has to go into the cgi-bin directory on your web server and must be made executable. Becuase not all web services provide Ruby here's a PHP version of the same thing: <?php
{// // Send the appropriate headers // header('Content-Type: text/xml'); header("Cache-Control: no-cache, must-revalidate");//A date in the past header("Expires: Mon, 26 Jul 1997 05:00:00 GMT");
// Read to the end of the file putting the contents on the // output while (!feof($handle)) {$buffer = fgets($handle); echo $buffer; } fclose($handle); }
NB. I've not tested the above PHP script; but it should work.
You can save the PHP script as a .php file (e.g. responder.php) anywhere you fancy on your web server. It doesn't have to be in the cgi-bin directory.
To test that the XML file and responder script are working then you can call them directly in your web browser. For example: http://your-host.domain/responder.php. If all is well you'll get a rendition of your XML file in your browser. Possible problems are:
<curtemp>^vxv007^</currtemp> The start and end tags don't match. If the browser displays the XML OK then we're into the final stage, the Javascript. |
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| Last Updated ( Thursday, 19 July 2007 ) |
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