Up until now I’ve written several tutorials already about creating some readonly Spring boot application, but what’s cool about that? Eventually you’ll have to add/update some data in your application. In this example I’ll show you how you can do that with Spring Web and JSR-303 bean validations.
👋Hey there,I'm Dimitri
I like trying out new frameworks and writing about them. Below you can find the latest articles I wrote.
When developing applications, it can be interesting to put labels in a separate properties file, so that they can be re-used. For example, we often noticed that within our applications there were slight variations on specific words, which broke consistency. The easiest way to solve that is to centralize these labels. Another benefit you get […]
A few weeks ago I wrote an article about creating Docker images containing a Spring boot application, introducing both Docker, Docker Machine and Docker Compose. Today I’m going to take those images (both the application image and the MySQL image) to the cloud, using Bluemix.
In my previous tutorial I wrote a small Spring boot application that retrieved data from a database and showed it on a webpage. However, we only handled the happy path, usually stuff may go wrong when retrieving data or doing certain operations.
In my previous tutorial I made a simple application to show some superheroes and supervillains. While the application did what it should do it was pretty statically because I used some mock data. With Spring Data it’s very easy to create a simple CRUD application without the hassle of creating your own DAO’s. Spring Boot […]
Three years ago I wrote this tutorial. Things have changed in the Java and Spring landscape, so let’s see how much easier it is now to write a simple Spring webapplication.
In the next couple of weeks I’m going to develop a small idea sharing/voting application, using several common concepts in web development. First of all, I’m going to write and secure a REST API with Spring Security.
If you’re a web developer like me, then you probably know that writing tests for an application means that you have to test various parts of the application. Modern web architectures usually contain the necessary front-end logic, a REST back-end and some data persistence. Having to test your application means that you want to cover […]
The past couple of weeks I wrote several kind of tests for my Spring Boot application, we started of with some integration tests for our REST service, and today I’m writing the last part of the series with some functional/integration tests for the application using Selenium.
In my previous article I explained how you could rapidly create a completely working, responsive CRUD application with about 150 lines of code. That’s obviously nice, but Spring Boot also makes it easy to write integration tests for your application, because it’s easy to setup a running test application with a few annotations, so then […]