RE: RequestDispatcher.forward to cgi?
Thanks Tim, I'll keep working on it then and see where it gets me. Ken -Original Message- From: Tim Funk [mailto:[EMAIL PROTECTED] Sent: Friday, December 05, 2003 12:54 PM To: Tomcat Users List Subject: Re: RequestDispatcher.forward to cgi? I would think that the CGI servlet would work on a forward but you must be sure that: 1) No input streams were open (or that they are compatible with the CGIServlet) 2) On a POST, you do not call or look at request parameters or the input stream since it looks like the CGIServlet wants to pass the Inputstream right to the servlet. 3) I am unsure of how the CGI servlet goes to look for the exe with respect to a forward. (But I think you should be ok) -Tim Januski, Ken wrote: > Tim, > > Now that I look at them closely I see that most of them are due to a looping > problem in my program. So it just logs over and over that it's forwarding > the request. I'll investigate to see if the loop is due to an error in my > progamming (certainly possible since I've had to tinker with a very large > controller servlet in order to incorporate this cgi page) or due to a > failure in forwarding. > > What I was hoping in asking the question though was to find out whether > anyone had done this successfully or not. I'm happy to troubleshoot the > problem if I think there's a chance of success. But I hate to spend the time > on it if I'm just trying to do the impossible or the dumb. > > Ken > > > -Original Message- > From: Tim Funk [mailto:[EMAIL PROTECTED] > Sent: Thursday, December 04, 2003 9:21 PM > To: Tomcat Users List > Subject: Re: RequestDispatcher.forward to cgi? > > > Just curious ... what are the errors? > > -Tim > > Januski, Ken wrote: > > >>I've finally managed to get cgi working in Tomcat. Now I need to forward >>from a servlet to a cgi page. But both RequestDispatcher.forward and >>RequestDispatcher.include are failing. I'm not surprised that include does >>but I thought it might be possible with forward. >> >>Since this is part of a large application that keeps track of the session >>I'd like to be able to include the cgi page in the application. But I'm >>beginning to think that's not possible. So I wonder if anyone knows > > whether > >>it's possible to forward to a cgi page within the same Tomcat webapp. If > > not > >>I'll save myself a lot of trouble and just make it a separate webapp with >>just a cgi component. >> >>Thanks for any advice. >> >>Ken >> >>P.S. I'm using cgi with perl because I can't find a class to add IPTC >>information to a Jpg and I don't have time to write it myself. Such a > > module > >>does already exist in Perl. >> >> >> > > > > - > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] > - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: RequestDispatcher.forward to cgi?
I would think that the CGI servlet would work on a forward but you must be sure that: 1) No input streams were open (or that they are compatible with the CGIServlet) 2) On a POST, you do not call or look at request parameters or the input stream since it looks like the CGIServlet wants to pass the Inputstream right to the servlet. 3) I am unsure of how the CGI servlet goes to look for the exe with respect to a forward. (But I think you should be ok) -Tim Januski, Ken wrote: Tim, Now that I look at them closely I see that most of them are due to a looping problem in my program. So it just logs over and over that it's forwarding the request. I'll investigate to see if the loop is due to an error in my progamming (certainly possible since I've had to tinker with a very large controller servlet in order to incorporate this cgi page) or due to a failure in forwarding. What I was hoping in asking the question though was to find out whether anyone had done this successfully or not. I'm happy to troubleshoot the problem if I think there's a chance of success. But I hate to spend the time on it if I'm just trying to do the impossible or the dumb. Ken -Original Message- From: Tim Funk [mailto:[EMAIL PROTECTED] Sent: Thursday, December 04, 2003 9:21 PM To: Tomcat Users List Subject: Re: RequestDispatcher.forward to cgi? Just curious ... what are the errors? -Tim Januski, Ken wrote: I've finally managed to get cgi working in Tomcat. Now I need to forward from a servlet to a cgi page. But both RequestDispatcher.forward and RequestDispatcher.include are failing. I'm not surprised that include does but I thought it might be possible with forward. Since this is part of a large application that keeps track of the session I'd like to be able to include the cgi page in the application. But I'm beginning to think that's not possible. So I wonder if anyone knows whether it's possible to forward to a cgi page within the same Tomcat webapp. If not I'll save myself a lot of trouble and just make it a separate webapp with just a cgi component. Thanks for any advice. Ken P.S. I'm using cgi with perl because I can't find a class to add IPTC information to a Jpg and I don't have time to write it myself. Such a module does already exist in Perl. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: RequestDispatcher.forward to cgi?
Tim, Now that I look at them closely I see that most of them are due to a looping problem in my program. So it just logs over and over that it's forwarding the request. I'll investigate to see if the loop is due to an error in my progamming (certainly possible since I've had to tinker with a very large controller servlet in order to incorporate this cgi page) or due to a failure in forwarding. What I was hoping in asking the question though was to find out whether anyone had done this successfully or not. I'm happy to troubleshoot the problem if I think there's a chance of success. But I hate to spend the time on it if I'm just trying to do the impossible or the dumb. Ken -Original Message- From: Tim Funk [mailto:[EMAIL PROTECTED] Sent: Thursday, December 04, 2003 9:21 PM To: Tomcat Users List Subject: Re: RequestDispatcher.forward to cgi? Just curious ... what are the errors? -Tim Januski, Ken wrote: > I've finally managed to get cgi working in Tomcat. Now I need to forward > from a servlet to a cgi page. But both RequestDispatcher.forward and > RequestDispatcher.include are failing. I'm not surprised that include does > but I thought it might be possible with forward. > > Since this is part of a large application that keeps track of the session > I'd like to be able to include the cgi page in the application. But I'm > beginning to think that's not possible. So I wonder if anyone knows whether > it's possible to forward to a cgi page within the same Tomcat webapp. If not > I'll save myself a lot of trouble and just make it a separate webapp with > just a cgi component. > > Thanks for any advice. > > Ken > > P.S. I'm using cgi with perl because I can't find a class to add IPTC > information to a Jpg and I don't have time to write it myself. Such a module > does already exist in Perl. > > > - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: RequestDispatcher.forward to cgi?
Just curious ... what are the errors? -Tim Januski, Ken wrote: I've finally managed to get cgi working in Tomcat. Now I need to forward from a servlet to a cgi page. But both RequestDispatcher.forward and RequestDispatcher.include are failing. I'm not surprised that include does but I thought it might be possible with forward. Since this is part of a large application that keeps track of the session I'd like to be able to include the cgi page in the application. But I'm beginning to think that's not possible. So I wonder if anyone knows whether it's possible to forward to a cgi page within the same Tomcat webapp. If not I'll save myself a lot of trouble and just make it a separate webapp with just a cgi component. Thanks for any advice. Ken P.S. I'm using cgi with perl because I can't find a class to add IPTC information to a Jpg and I don't have time to write it myself. Such a module does already exist in Perl. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
