Hi, As a long time Java/J2EE exponent I wanted to give Rails a fair crack of the whip and after we evaluated it for several weeks I have to say I like it. The installation process for the base system/framework is straightforward on the two platforms we''ve tried (Windows and Mac OS X). However, the charting components available, relying on ImageMagick or GraphicsMagick seem less clear cut. OS X was no problem - but Windows XP proved tricky. The other option we considered was using a Java servlet on Tomcat to provide the charts (using JChart or something). Is there a way within a Rails controller (for example) to proxy a call to another server (on port 8080 in this case) within the firewall, to return a resource (a generated image). Obviously we don''t want to embed an <img> link to something on 8080 since this won''t be available outside of the firewall. The only thing I can think to do is to use Apache proxying but we are trying to keep the installation and configuration process simple. We did some PHP/J2EE development on a previous project and the installation process for PHP and Apache got quite exotic towards the end. Sean. -------------- next part -------------- An HTML attachment was scrubbed... URL: http://wrath.rubyonrails.org/pipermail/rails/attachments/20060326/9523990b/attachment.html
Sean Blezard wrote:> proved tricky. The other option we considered was using a Java servlet > on Tomcat to provide the charts (using JChart or something). Is there a > way within a Rails controller (for example) to proxy a call to another > server (on port 8080 in this case) within the firewall, to return a > resource (a generated image). Obviously we don''t want to embed an <img> > link to something on 8080 since this won''t be available outside of the > firewall. The only thing I can think to do is to use Apache proxying but > we are trying to keep the installation and configuration process simple. > We did some PHP/J2EE development on a previous project and the > installation process for PHP and Apache got quite exotic towards the end.Hah! I was just working on this... only using a simple servlet running in tomcat and using batik to transcode an svg to a png. It''s called by a php page. Anyway, check out the Net::HTTP module: http://www.ruby-doc.org/stdlib/libdoc/net/http/rdoc/classes/Net/HTTP.html You can use this to make an HTTP connection to the servlet running on localhost:8080 and pass it the data. The servlet can then write the chart into the appropriate image dir and the rails response will just find it there. On the other hand, you might just be fine using gruff: http://nubyonrails.topfunky.com/pages/gruff b
Hi Ben, I really liked the look of Gruff and as I said, installing the pre-requisites (GraphicsMagick via Darwin Ports) was easy on my Powerbook ... less easy on one the developer Windows boxes. I don''t know if Instant Rails ships with it. I am trying to secure a couple of new projects in the next few weeks and I''d really like to bring Rails into the mix (with a splash of Java services fronted by REST web services). The clients are energy traders/brokers and a European government agency and they seem to have a bias towards Windows 2003 Server... so I really need a solution that can be concisely and easily installed on such a server (even though I''d much prefer to see them use Linux, Solaris 10 or OS X Server!) Charting is a key component of these projects. Thanks for the steer on Net::HTTP. On 26/03/06, Ben Munat <bent@munat.com> wrote:> > Sean Blezard wrote: > > proved tricky. The other option we considered was using a Java servlet > > on Tomcat to provide the charts (using JChart or something). Is there a > > way within a Rails controller (for example) to proxy a call to another > > server (on port 8080 in this case) within the firewall, to return a > > resource (a generated image). Obviously we don''t want to embed an <img> > > link to something on 8080 since this won''t be available outside of the > > firewall. The only thing I can think to do is to use Apache proxying but > > we are trying to keep the installation and configuration process simple. > > We did some PHP/J2EE development on a previous project and the > > installation process for PHP and Apache got quite exotic towards the > end. > > Hah! I was just working on this... only using a simple servlet running in > tomcat and using > batik to transcode an svg to a png. It''s called by a php page. > > Anyway, check out the Net::HTTP module: > > http://www.ruby-doc.org/stdlib/libdoc/net/http/rdoc/classes/Net/HTTP.html > > You can use this to make an HTTP connection to the servlet running on > localhost:8080 and > pass it the data. The servlet can then write the chart into the > appropriate image dir and > the rails response will just find it there. > > On the other hand, you might just be fine using gruff: > > http://nubyonrails.topfunky.com/pages/gruff > > b > _______________________________________________ > Rails mailing list > Rails@lists.rubyonrails.org > http://lists.rubyonrails.org/mailman/listinfo/rails >-------------- next part -------------- An HTML attachment was scrubbed... URL: http://wrath.rubyonrails.org/pipermail/rails/attachments/20060326/10a686d2/attachment-0001.html
I have writtn code for charts using easy charts. The only thing we need to do is
extract jar files such as chart.jar,chartserver.jar,chart.ext.jar; and create
objects and run the code as we run java pgms.
Now i''m facing with a problem: i''m unable to run this java
code using tomcat. i would be grateful to u if u help me as i m a final year
engg student and need the same in regard to my project. waiting for ur reply
Yours sincerely
Sarika