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Outputting text from a perl script to a html page.

mott3510
New User

Aug 12, 2009, 2:52 PM

Post #1 of 11 (936 views)

Outputting text from a perl script to a html page.	Can't Post

I wrote a script in perl that outputs several lines of text. I can run the script in y terminal window by typing..../decodeMetars.pl KOUN KCAK. This will output the current conditions at each location in several lines of text. I have an already existing html page (forecast.html) and I would like to add what is output from that script directly to my html page. If at all possible I would like to be able to call the script from within my html page. Any help is greatly appreciated!

spider
User

Aug 12, 2009, 11:46 PM

Post #2 of 11 (929 views)

Re: [mott3510] Outputting text from a perl script to a html page. [In reply to]	Can't Post

What you should do is to create a cgi-script to replace your forcast.html.
I don't think it is possible to run the script directly in you html-code.

FishMonger
Veteran / Moderator

Aug 13, 2009, 6:25 AM

Post #3 of 11 (921 views)

Re: [mott3510] Outputting text from a perl script to a html page. [In reply to]	Can't Post

Based on your description of how you want to execute the script, I think you might want to look at using AJAX.
http://en.wikipedia.org/wiki/Ajax_(programming)

I've never worked with AJAX, so I can't help with its coding, but this tutorial may help.
http://www.w3schools.com/Ajax/Default.Asp

If you want a more Perlish solution, you could use HTML::Template and your html file would be the template.
http://search.cpan.org/~samtregar/HTML-Template-2.9/Template.pm

KevinR
Veteran

Aug 13, 2009, 9:18 AM

Post #4 of 11 (918 views)

Re: [mott3510] Outputting text from a perl script to a html page. [In reply to]	Can't Post

In Reply To

The simplest way might be to use an SSI tag in your html document (might have to change the extension to .shtm or .shtml) that calls the script and inserts the cgi script output. SSI tags are a way to have some dynamic content in an otherwise static html document. Most likely you will want to use the 'virtual' SSI tag. Something like:



Google for SSI tutorials if you are totally unfamiliar with SSI.
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mott3510
New User

Aug 13, 2009, 9:51 AM

Post #5 of 11 (916 views)

Re: [KevinR] Outputting text from a perl script to a html page. [In reply to]	Can't Post

I figured that would be the easiest way and i tried:




and keep getting the same error message:
[an error occurred while processing this directive]

I know this is a very common error and can be just about anything, but I have yet to figure out what is causing it.

KevinR
Veteran

Aug 13, 2009, 10:19 AM

Post #6 of 11 (915 views)

Re: [mott3510] Outputting text from a perl script to a html page. [In reply to]	Can't Post

In Reply To

I would use the actual folder name the script is in instead of ./

Does the perl script print a valid MIME header for the content it delivers before printing anything else?

Does the perl script have its permissions set correctly?

Can you run the perl script directly from its URL?
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KevinR
Veteran

Aug 13, 2009, 10:22 AM

Post #7 of 11 (914 views)

Re: [mott3510] Outputting text from a perl script to a html page. [In reply to]	Can't Post

In Reply To

oops... this also looks wrong:



It is running as a CGI process so you need to send the data as query string data:



and the perl script has to know it needs to extract KOUN out of the query string. Maybe using 'exec' you can send command line data to the perl script, but I'm not sure.
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(This post was edited by KevinR on Aug 13, 2009, 10:22 AM)

mott3510
New User

Aug 13, 2009, 11:04 AM

Post #8 of 11 (908 views)

Re: [KevinR] Outputting text from a perl script to a html page. [In reply to]	Can't Post

The perl script prints this heading:

print "Content-type: text/html\n\n" ;

I have checked the permissions and they are correct.

(I changed the perl code a bit so that it knows to pull KOUN from within the script, so now all I have to do is run it and it outputs what I need.)

I can run the script by putting the following in my terminal window:
./decodeMetars.pl

I also tried the entire path, like so:


but I still get the same error.

KevinR
Veteran

Aug 13, 2009, 12:58 PM

Post #9 of 11 (906 views)

Re: [mott3510] Outputting text from a perl script to a html page. [In reply to]	Can't Post

Is the script on a local http server or are you running it on a remote server (web hosting service)? If its a hosted account see if they have some SSI FAQs you can read or contact tech support. If you can't get it to work you may need to try and alternate method.
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mott3510
New User

Aug 13, 2009, 2:36 PM

Post #10 of 11 (903 views)

Re: [KevinR] Outputting text from a perl script to a html page. [In reply to]	Can't Post

It is a local http server. What other method would you suggest to try?

KevinR
Veteran

Aug 13, 2009, 5:53 PM

Post #11 of 11 (901 views)

Re: [mott3510] Outputting text from a perl script to a html page. [In reply to]	Can't Post

In Reply To

It is a local http server. What other method would you suggest to try?

If its a local server then you should be able to get it to work. See your servers manual for SSI instructions or google around for them.
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