The previous part of this tutorial taught us how we can add custom methods into a single repository. Although that is a very useful skill, it doesn't help us when we have to add the same method into all repositories of our application. Luckily for us, Spring Data provides a way to add custom methods […] Read more
Spring Framework
A few weeks ago we learned to transform the value of a single request parameter into an object, which is passed to our controller method as a method parameter, by using Spring type converters. Using type converters is a good choice if we want to create "simple" value objects and inject these objects into our […] Read more
A few weeks ago we learned how we can parse date and time information from a request parameter by using the @DateTimeFormat annotation. This is a simple and clean solution that works very well if we don't have "too many" controller methods that use this approach. The drawback of this solution is that we have […] Read more
I think that the best part of writing a blog is to get comments from my readers. Because I have learned a lot from my readers, I want to “reward” the best comments, help you to learn new things, and (hopefully) encourage people to leave more comments. The rules are simple: I select X best […] Read more
A few days ago I had to write a controller method that is used to upload files to a Spring web application. This is an easy task, but I had another requirement that turned out to be a problem: every file has an expiration date that must be given when the file is uploaded. What […] Read more
When we hear the word auditing, the first thing that comes to mind is an audit log that contains each version of the audited entity. Implementing an audit log is a complex task that takes a lot of time. Luckily, most of the time we don’t need to do it. However, it is quite common […] Read more