Jasper reports and iReport

Has anyone succeeded in producing Rails reports using jasper reports? I have prepared reports directly with Jasper's iReport tool using my MySQL data. It is a very powerful reporting tool. The reports look greate.

But I have not been able to produce the reports from my Rails application. I have followed the instructions provided at:


but am unable to make it work. I am probably not doing something really basic, relatively new at Rails. When I enter the URL for the controller "http://localhost:3000/reports/report" as described in the tutorial (above) I get the following error:

"Expected ./app/helpers/send_doc_helper.rb to define SendDocHelper"

Should I do something else first?

I have the same problem, but I'm kind of solving it to get my test going by simply copying the code from send_doc_helper.rb into the helper of the controller where I'm calling Jasperreports. It is running now, but I don't get any output yet. There are however quite some deprecation warnings in the log. Let me know how you are getting on.

VSIntl schreef:

I was just doing some investigating on JasperReports yesterday and read through that wiki page thoroughly. Seems like a prime candidate for someone who knows what they’re doing to make into a plugin or gem. I’m thoroughly lost trying to figure out what I need to do to get this to work.

FlexRails wrote:

What if you do what the error message is suggesting? Change the name of the module in send_doc_helper.rb to be SendDocHelper instead of SendDoc, and change helper :send_doc include SendDoc to helper :send_doc include SendDocHelper Fred

I still have to try the suggestion from Fred but I got it to work on my development machine. I had to jump through some loops, but it does work. I can now develop and test a report with iReport and call it from Ruby on Rails. If anyone is interested let me know and I will post some additional information on how I got it to work.

A blog or wiki post with the whole procedure and all pitfalls would be nice. Do you run Jasper Reports as a Webservice or through a commandline call?

Best regards

Peter De Berdt

@Fred Thanks Fred. It works the way you suggested.

@Peter It's based on http://wiki.rubyonrails.org/rails/pages/HowtoIntegrateJasperReports , so it's command line and it's fast enough for me. Where do you think I should put the Wiki description ?

The page you mentioned above might be a good place :slight_smile:

Best regards

Peter De Berdt

If anyone is interested let me know and I will post some additional information on how I got it to work.

Yes, Please!

I hope I'm not stepping upon this thread but continue to ask if anyone is integrating barcodes into .pdf outputs in Rails? I thought perhaps you good people might be somehow involved in inventory applications. Thank you, Kathleen

ok, I will update the wiki, but I need a little bit of time. I'll try to this this tonight.

does jasper reports work on a shared hosting plan?


Does an ultra cheap car come with advanced options like voice commands, keyless entry, active safety systems, wifi hookups, …?

Simple answer: no.

JasperReports is not so easy to deploy an a hosted site, because it requires a Java server (Tomcat, Weblogic, Resin or something else), which isn’t supported by most providers.

Best regards

Peter De Berdt

If you want to use JasperReports as a webservice, yes indeed it will take some effort to get it all set up correctly, although these days, you will find hosting plans including Tomcat servers (or other Servlet/ JSP engines).

If you want to use JapserReports as a command line service, deployment is actually quite simple as long as you are allowed to run Java processes on your hosting server, but a lot of plans allow (short running) Java processes.

I have updated the http://wiki.rubyonrails.org/rails/pages/HowtoIntegrateJasperReports wiki page with a complete description on how I got JasperReports to work from rails. I hope it will be usefull for some of you. Success.

Thanks for the info Flex. I've set things up like you described, but am still having a couple small issues.

1) With a very simple "Hello World" report with just a static text element, I'm able to compile the report and all but when I render it through rails, I get a completely blank PDF. Anybody had a similar problem? thoughts?

2) iReport on Ubuntu7.10 seems to have stability issues. I've installed 2.04, 2.00 and 1.1.0 and all will freeze up when I try to compile or execute a report with any kind of dynamic data, and sometimes even when I'm just trying to work with a "hello world" report with a single static text element. anybody have any thoughts on that?

1) In which banner have you put your static 'Hello world' text, because when I put it in the title banner, or in detail, and I try to run it from within iReport I get a message 'The document has no pages.' The compilation however succeeds. In that case of course there will be no output when you call the report from rails. If you really got a report preview in iReport but no output in rails you might look for a file called XmlJasperInterface.log somewhere in your rails application and see if you find some more information there. I had the same problem untill I copied the iReport lib files to my rails/app/jasper/lib directory. So you might double check if you have missed any of the lib files.

2) I'm running on a Mac and there it works fine. I suppose you could develop your reports on a platform where iReport runs stable, and then still deploy to Ubuntu.

Is there anyone who was successfull using my description, otherwise I will have to check my description for possible errors ?

Flex, thanks a **ton** for your assistance.

My report preview in iReport is now working great even with dyanmic data (on our token windows xp box). I've got the "hello world" text in the "page header" "banner" and a couple dynamic fields in the "detail" banner. the "build/execute with active connection" gives me exactly what I would expect for the page heard and the dynamic data. However, when I put the compiled .jasper file in app/reports I still get a blank pdf.

There are some differences in what I put in the app/jasper/lib directory compared to your instructions. a) you mention a jdt-compiler.jar, but my download of iReport 2.0.4 contained a jdt-compiler-3.1.1.jar. At first, I figured that was just a typo on your part. Later I also found a plain jdt-compiler.jar in the jasperreports_on_rails archive and tried that, too. Neither helped. b) you mention a log4j-1.2.13.jar. However, my 2.0.4 iReport only contains a log4j-1.2.8 and 1.2.9 jars. I put both of those in the lib directory but that didn't work.then I found the log4j-1.2.13.jar in the jasperreports_on_rails archive and replaced the other two with it. Still blank.

So, right now my lib dir has all the same 11 .jar files you mention in your instructions (and no others), the only exceptions being that jdt- compiler.jar and log4j-1.2.13.jar came from the jasperreports_on_rails download instead of the latest version of iReport.

Still getting a blank pdf file though. any more ideas?

Also, if I completely remove the .jasper file, I get the expected java errors, and when I put it back I'm back to the blank pdf's, so I am sure that it's finding and using the correct .jasper file. (just to rule out one possible problem)

WhooHoo! Got it working. I had a typo in the xml_start_path I was passing to send_doc. With the two special files copied from jasperreports_on_rails instead of from iReport, and my typo fixed, it's working great.

I'm going to work on simplyfing this code and either posting some alternate/simplified instructions to my blog or possibly even creating a Rails plugin that makes all this a lot easier to do. I'll post an update to this thread if/when that happens. Flex, if you want to collaborate on the plugin, holler!