Full-stack Java development with Vue 2/3 front-end suite; hands-on examples and source code analysis for Spring, Spring Boot 2/3, and Spring Cloud.
The article explains how Spring Boot's @AliasFor annotation, available since Spring 4.2, can create explicit and implicit attribute aliases in both built‑in annotations like @ComponentScan and custom composed annotations, with complete code examples and test output demonstrating the aliasing behavior.
This article examines ten common pitfalls when using Spring Boot's @Transactional annotation, explains why each issue occurs—from self‑invocation and private methods to swallowed exceptions, read‑only settings, long transactions, lock interactions, and deadlocks—and provides concrete code examples and three‑step solutions to avoid them.
This article demonstrates how to apply ByteBuddy in Java 21 to create dynamic classes, delegate methods, define new methods and fields, and redefine existing classes at runtime, enabling urgent bug fixes and logic changes without restarting the application.
The article explains how to replace repetitive @Qualifier annotations in Spring by using generic‑type based injection and custom qualifier annotations, providing concrete code examples and showing how Spring resolves beans without explicit qualifiers.
This article shows how to quickly generate PDF documents in a Spring Boot 3.5.0 project using the x‑easypdf library, covering both the FOP and PDFBox modules, required dependencies, configuration files, sample controller code, and a runnable example that renders a PDF in the browser.
Spring Boot 4.1 introduces 20 major updates, including removal of deprecated APIs, new gRPC support, enhanced Jackson configuration, improved observability with OpenTelemetry, SSL for RabbitMQ streams, lazy JDBC connections, and numerous Gradle and Maven plugin enhancements, while providing detailed migration guidance for developers.
This article demonstrates four techniques for persisting flexible JSON data in Spring Boot 3.5.0—using JPA @Convert with AttributeConverter, Hibernate @JdbcTypeCode, a custom MyBatis TypeHandler, and MyBatis‑Plus annotations—complete with code snippets, test cases, and execution results.
The article benchmarks three Spring Boot aggregation approaches—sequential calls, CompletableFuture parallelism, and virtual‑thread structured concurrency—using JMeter on a Spring Boot 3.5.0 service, showing that CompletableFuture delivers the lowest latency, structured concurrency offers better reliability, and sequential execution performs the worst.
This article shows how Spring Boot 3.5.0’s built‑in UrlHandlerFilter can safely handle trailing‑slash URLs by either issuing a permanent redirect or wrapping the request, with step‑by‑step examples for Spring MVC, custom servlet filters, reactive WebFlux filters, and equivalent Nginx configuration.
This article demonstrates how to combine Spring Boot's @ConfigurationProperties with Java records to create concise, immutable, and type‑safe configuration classes, covering scanning setup, record definition, YAML binding, constructor injection, validation with @Validated, and best‑practice recommendations for managing configuration in Spring Boot 3.5.0.
