When developing programs that are larger than minuscule I prefer to structure them in a fashion as once inspired by an article by Simon Brown named “An Architecturally Evident Coding Style” that I read some years ago. Not only does this help me to organize my code in a, to me, familiar way but it… Read More »
In this article I will, using a test-case, show how to publish and consume MQTT messages using the reactive HiveMQ client library. I will use the Mosquitto MQTT broker for the test. The example application will be implemented using Spring Boot 3 and Java 17. The example will initially allow unauthenticated access that later will… Read More »
In this article I will show how to reduce the set of application configuration properties available to a Spring Boot test. The reason for me wanting to do this is to be able to write tests for code that relies on a dynamic set of configuration properties. The source-code of the completed example project can… Read More »
Just a short note to say that my book Core Spring 5 Certification in Detail has been updated to reflect the curriculum released by Pivotal in May 2019. Thanks for your patience if you have been waiting for this update! Please do not hesitate to contact me if there are any errors, omissions or with… Read More »
Given that Oracle’s Java licensing model has changed, I have uninstalled all Oracle JDKs from my computer and am using SDKMAN to download free Java JDK versions. However I did not find my favourite Java JVM monitoring tools, VisualVM and Mission Control, in any of the JDKs that I downloaded with SDKMAN. VisualVM VisualVM was… Read More »
After Pivotal have changed the topics of the Spring 5 certification, I have received several requests to update my book Core Spring 5 Certification in Detail. First of all, I want to thanks everyone for their encouragement and patience. It has been a very busy summer and autumn for me, but this is a short… Read More »
It’s been a long time since I started looking at Spring Integration 5 and after miscellaneous interventions, such as a book on the Spring Core certification, having moved and a job that provides a never-ending stream of surprises, I am finally back! This article is an article in a series of articles introducing Spring Integration… Read More »
In this article I will show how to create a Spring MVC web application that uses Spring Security 5 but that does not use SpringBoot. The method used to configure Spring Security 5 in this article is not something I recommend and really is doing things in an overly complicated manner. It is purely a… Read More »
This article is an article in a series of articles introducing Spring Integration 5. I imagine most of the examples can be applied to earlier versions of Spring Integration as well, it just happens that I started out with Spring Integration 5 and I have little reason to investigate compatibility with previous versions. In this… Read More »
This is an article in a series of articles introducing Spring Integration 5. I imagine most of the examples can be applied to earlier versions of Spring Integration as well, it just happens that I started out with Spring Integration 5 and I have little reason to investigate compatibility with previous versions. The articles assume… Read More »