Generating PDFs can be a tricky job. If you ever worked with templating engines like Jasper you probably know what I mean. On the other side, HTML makes it extremely simple to describe documents. So why not use HTML to generate PDFs?

No matter what type of software you make, there will always be errors. There might be bugs in your code or an external system is just down at the moment. No matter what, it will cause you trouble.

A couple of days ago I published a post about the difference between queues, topics and virtual topics. Today I want to share some practical information on how to use virtual topics in ActiveMQ with Spring Boot.

ActiveMQ provides a variety of different messaging patterns. While queues and topics are the most known ones, virtual topics can combine the best of both worlds: multiple consumers with their own dedicated queue.

The following example shows how we can use Google’s ReCaptcha for an anonymous login and authentication with JSON Web Token.

Roughly about two years ago, I wrote an article called “Why using Spring’s @Value annotation is bad”. I described why you should avoid the @Value annotation in your code and prefer @ConfigurationProperties:

Yesterday, I received an e-mail from a reader of my blog. He told me that he clicked on the XING link on my “About” page, but was redirected to some shady online trading website instead of my XING profile. So I took my laptop and took a look at it. And - to my surprise - he was right! I started to investigate what was going on. Here’s what I found out.

Most of the time, testing AngularJS applications means testing JavaScript. We test services and we test controllers. But what about directives? What about components? How do we test compiled and injected AngularJS code?

A couple of days ago I finished my capstone project for the Full Stack Web Development specialization on Coursera. It marks the end of the 6-course specialization about Bootstrap CSS, AngularJS and NodeJS.

During the last 6 months I did the Full Stack Web Development course on Coursera. Since I’m currently about to finish the course by implementing my final capstone project (https://github.com/tuhrig/mebo), I wanted to share my thoughts about the course and its pros and cons.