Grails VS Apache PDFBox

And frameworks like Grails build conventions and helpers on top of Spring.

I don't have any direct experience and am only suggesting it because you mentioned RoR...But Grails (https://grails.org/) is basically the JVM version of RoR (Groovy on Rails -> Grails).

Grails - Spring under the hood. Much less boilerplate. Opinionated, which helps keep things consistent. Uses Spring-Security plugin for authentication.

Also, Grails, which a Rails like framework build on Groovy, a JVM scripting language.

Any JVM language to the rescue here? There’s one, but it’s not the one you’re thinking about. In a sign that this index may not accurately reflect our project reality, Groovy saw a meteoric rise of 0.86% to 1.04% last year! That was good for place 17. Yep, Groovy! Are people writing Gradle plugins in Groovy? Or is Grails having a resurgence? I’m as baffled as you are.

Are you looking for a way to render PDF's or produce them? If you want to produce PDF's, I've used https://pdfbox.apache.org/ successfully as well as https://itextpdf.com/ (potentially costs money).

If you don't mind using java, you can use the open source Apache PDFBox library

https://pdfbox.apache.org/

It's relatively performant and it's a mature and supported codebase that can accomplish most pdf tasks.

Then, open the pdf_utils/pom.xml file and add a dependency to PDFBox, in the dependencies section:

There are some libraries for Java that can help you create a PDF file such as PDFBox or IText. Here there's a short exaplanation on how to use them.

So, when I started to view the documents, a lot of them simply failed to open. I had to look around for a library that could verify PDF documents. I had some experience with PDFBox in the past, so it seemed to be a good go-to solution. It had no way to verify documents by default, but it could open and parse them and that was enough to filter out the incorrect ones. It felt a little bit strange just to read the whole PDF into the memory to verify if it is correct or not, but hey I needed a simple fix for now and it worked really well.

PDFBox can do this. It’s not part of the CLI but it wouldn’t be too hard to add:

https://github.com/apache/pdfbox/blob/5b00807463279f1002e245...