RE: calling Perl Script from JSP?
Chris, Thank you. This is starting to make more sense now. I may have more questions but, I'll go do some homework first. I'll start with the book you mentioned. Thanks, Drue Chris Devers [EMAIL PROTECTED] wrote: First of all, Perl is the language, perl is the program that runs programs written in Perl, and PERL isn't a word. On Tue, 21 Sep 2004, Drue Reeves wrote: Why is it bad to mix JSP and Perl? They are just much different frameworks. Most Java systems I'm aware of (and I'll plead guilty to some ignorance here) pretty much want you to do everything in Java, from the JSP scripts that display pages to the beans (or whatever) that implement the site logic to, sometimes, the database itself. Perl on the other hand is often the glue holding a heterogeneous system together. It's very good for getting a bunch of disparate pieces that are either old or maybe came from different places to play nicely together. I know nothing about your JSP system, but conventionally, shops that have decided to go with JSP seem to do everything in JSP, just because there's so much inertia behind getting everything locked in to Java. I seem to be talking about the cultures more than the languages. Oh well. Maybe a better question is how do you call a Perl script from a web page (and pass parameters)? There is a lot of flexibility here. Often, Perl *is* the web page, whether by a CGI script that runs perl and executes the script with each page view, or a mod_perl plugin that embeds perl into Apache so that scripts are persistent in memory (which is the approach that JSP and other languages seem to take, right?). But if you just have a static HTML document that needs to call Perl somehow, the usual way is either by a form's tag or just by following a link. In either case, this usually ends up being a GET or POST request to a Perl script that has been exposed as a web page with a URL. For POST requests, the parameters are sent to the script basically as a text document that is uploaded to the server, while for GET requests the data comes in following the script. Hence, http://google.com/search?q=http%20protocol ^ ^ ^ ^-- parameters to the script | | +--- the script / program / whatever | + the domain +- the protocol And if this doesn't make sense, there's lots of documentation out there. This book may help clarify things -- it's old now, but the fundamentals haven't changed since it was published: So, if you're working via HTTP -- as you're doing on the web -- then it just ends up being a URL that you GET from or maybe POST to. Make sense? More questions? -- Chris Devers
RE: calling Perl Script from JSP?
-Original Message- From: Drue Reeves [mailto:[EMAIL PROTECTED] Sent: Tuesday, September 21, 2004 4:49 AM To: [EMAIL PROTECTED]; Cary Andrews Subject: calling Perl Script from JSP? Anyone know how to call a PERL Script from a JSP and pass parameters to the script? I have a JSP that will call PERL but, everytime we try to add a script nothing happens. Any ideas? Very bad idea trying to mix Perl and JSP ... Which feature of Perl do you want to use in your JSP page that you can't get from Java ? José. DISCLAIMER This e-mail and any attachment thereto may contain information which is confidential and/or protected by intellectual property rights and are intended for the sole use of the recipient(s) named above. Any use of the information contained herein (including, but not limited to, total or partial reproduction, communication or distribution in any form) by other persons than the designated recipient(s) is prohibited. If you have received this e-mail in error, please notify the sender either by telephone or by e-mail and delete the material from any computer. Thank you for your cooperation. For further information about Proximus mobile phone services please see our website at http://www.proximus.be or refer to any Proximus agent. -- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] http://learn.perl.org/ http://learn.perl.org/first-response
RE: calling Perl Script from JSP?
From: NYIMI Jose \(BMB\) [EMAIL PROTECTED] -Original Message- From: Drue Reeves [mailto:[EMAIL PROTECTED] Anyone know how to call a PERL Script from a JSP and pass parameters to the script? I have a JSP that will call PERL but, everytime we try to add a script nothing happens. Any ideas? Very bad idea trying to mix Perl and JSP ... Which feature of Perl do you want to use in your JSP page that you can't get from Java ? Jos. Ease of use? Freedom? The loads of CPAN modules? Simply ... the power? What exactly do you mean by call? Do you need to 1) run a Perl script after the user clicks a link or button on the page returned by your JSP? 2) start a local Perl script while processing the JSP on the server, capture the output and include it in the resulting page? 3) start a remote Perl CGI script while processing the JSP on the server, capture the output and include it in the resulting page? In the first case you just need to either construct the URL to the script plus the parameters or create a form action=URL of the script with some hidden fields for those values and let the user submit the form. In the other two cases you are very unlikely to get much help in here. Try a Java/JSP related mailing list. I have no idea how to do either in Java and I'd love it to remain so. Jenda = [EMAIL PROTECTED] === http://Jenda.Krynicky.cz = When it comes to wine, women and song, wizards are allowed to get drunk and croon as much as they like. -- Terry Pratchett in Sourcery -- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] http://learn.perl.org/ http://learn.perl.org/first-response
RE: calling Perl Script from JSP?
Mainly some LDAP calls. PERL makes it easy to develop applications that do search and modify in LDAP with very little code. Java and C++ take much more code. Plus, PERL had some example code that made the development very simple. Why is it bad to mix JSP and PERL? Maybe a better question is how do you call a PERL script from a web page (and pass parameters)? Thank you, Drue NYIMI Jose (BMB) [EMAIL PROTECTED] wrote: -Original Message- From: Drue Reeves [mailto:[EMAIL PROTECTED] Sent: Tuesday, September 21, 2004 4:49 AM To: [EMAIL PROTECTED]; Cary Andrews Subject: calling Perl Script from JSP? Anyone know how to call a PERL Script from a JSP and pass parameters to the script? I have a JSP that will call PERL but, everytime we try to add a script nothing happens. Any ideas? Very bad idea trying to mix Perl and JSP ... Which feature of Perl do you want to use in your JSP page that you can't get from Java ? José. DISCLAIMER This e-mail and any attachment thereto may contain information which is confidential and/or protected by intellectual property rights and are intended for the sole use of the recipient(s) named above. Any use of the information contained herein (including, but not limited to, total or partial reproduction, communication or distribution in any form) by other persons than the designated recipient(s) is prohibited. If you have received this e-mail in error, please notify the sender either by telephone or by e-mail and delete the material from any computer. Thank you for your cooperation. For further information about Proximus mobile phone services please see our website at http://www.proximus.be or refer to any Proximus agent.
RE: calling Perl Script from JSP?
First of all, Perl is the language, perl is the program that runs programs written in Perl, and PERL isn't a word. On Tue, 21 Sep 2004, Drue Reeves wrote: Why is it bad to mix JSP and Perl? They are just much different frameworks. Most Java systems I'm aware of (and I'll plead guilty to some ignorance here) pretty much want you to do everything in Java, from the JSP scripts that display pages to the beans (or whatever) that implement the site logic to, sometimes, the database itself. Perl on the other hand is often the glue holding a heterogeneous system together. It's very good for getting a bunch of disparate pieces that are either old or maybe came from different places to play nicely together. I know nothing about your JSP system, but conventionally, shops that have decided to go with JSP seem to do everything in JSP, just because there's so much inertia behind getting everything locked in to Java. I seem to be talking about the cultures more than the languages. Oh well. Maybe a better question is how do you call a Perl script from a web page (and pass parameters)? There is a lot of flexibility here. Often, Perl *is* the web page, whether by a CGI script that runs perl and executes the script with each page view, or a mod_perl plugin that embeds perl into Apache so that scripts are persistent in memory (which is the approach that JSP and other languages seem to take, right?). But if you just have a static HTML document that needs to call Perl somehow, the usual way is either by a form's action tag or just by following a link. In either case, this usually ends up being a GET or POST request to a Perl script that has been exposed as a web page with a URL. For POST requests, the parameters are sent to the script basically as a text document that is uploaded to the server, while for GET requests the data comes in following the script. Hence, http://google.com/search?q=http%20protocol ^ ^ ^ ^-- parameters to the script | | +--- the script / program / whatever | + the domain +- the protocol And if this doesn't make sense, there's lots of documentation out there. This book may help clarify things -- it's old now, but the fundamentals haven't changed since it was published: http://www.oreilly.com/openbook/webclient/ So, if you're working via HTTP -- as you're doing on the web -- then it just ends up being a URL that you GET from or maybe POST to. Make sense? More questions? -- Chris Devers -- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] http://learn.perl.org/ http://learn.perl.org/first-response
