Jackson 3 in Spring Boot 4: JsonMapper, JSON Views, and What's Changed
Learn how to use Jackson 3 in Spring Boot 4 with the new JsonMapper, immutable configuration, unchecked exceptions, and JSON Views with the hint() method.
Writing on software development and anything else I find interesting.
All of my long-form thoughts on programming, content creation, and more, collected in chronological order.
Filtering by tag: Spring Boot
HTTP Interfaces in Spring Boot 4: Say Goodbye to Boilerplate
Learn how HTTP interfaces let you define declarative HTTP clients in Spring Boot, and discover how Spring Framework 7 eliminates the configuration boilerplate with @ImportHttpServices.
Stop NullPointerExceptions Before Production with Spring Boot 4's Null Safety
Discover how Spring Boot 4 and JSpecify annotations catch NullPointerExceptions at compile-time instead of runtime. Learn to implement @NullMarked and @Nullable for bulletproof Java code with practical examples.
Spring Boot 4's Bean Registrar: A Cleaner Way to Register Beans Programmatically
Learn how Spring Boot 4's new BeanRegistrar interface simplifies programmatic bean registration in Spring Framework 7. This tutorial demonstrates dynamic bean creation based on environment properties, conditional registration with complex logic, and performance optimization techniques. Discover when to use BeanRegistrar vs @Bean annotations with practical code examples and testing strategies...
Testing Spring REST APIs with RestTestClient: A Complete Guide
Explore the new Rest Test Client in Spring Framework 7, a modern replacement for RestTemplate that provides a fluent API for testing REST APIs with improved type safety and better integration with modern testing practices.