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.
This article demonstrates five advanced techniques for creating Spring Boot prototype beans with runtime parameters—including @Bean with @Scope, ApplicationContext.getBean, @Lookup, Function beans, and ObjectProvider—providing code examples, usage notes, and output showing distinct bean instances.
This article walks through using the Java‑based Docx4j library with Spring Boot 3.5.0 to create, style, insert images, generate tables, and read Word (docx) files, providing complete Maven dependencies, step‑by‑step code examples, and the resulting document screenshots.
This article demonstrates how to replace static Resilience4j circuit‑breaker parameters in a Spring Boot 3.5 application with dynamically generated values using Spring AI, detailing environment setup, code examples, AI prompt construction, and runtime configuration replacement to improve fault tolerance.
Evrete is a lightweight, high‑performance Java rule engine that implements the RETE algorithm, complies with JSR‑94, and offers flexible rule authoring via Java code, annotations, or CSV‑driven models, with full code examples and benchmark results demonstrated for Java 21.
This article shows how to replace static DTO definitions with a zero‑intrusion, high‑concurrency solution for column‑level data masking in Spring Boot 3.5.0 by leveraging Jackson's serialization pipeline, a global Mixin, custom annotations, a contextual serializer, and a ResponseBodyAdvice that respects request‑scoped permissions.
In Spring Boot 3.5.0, asynchronous threads lose MDC, security, and request data because ThreadLocal is not shared; the article demonstrates five concrete solutions—including InheritableThreadLocal, thread joining, custom TaskDecorator, Spring Security delegating wrappers, and MDC propagation—each with code samples, pitfalls, and best‑practice warnings.
This article explains how to use Java's built‑in WatchService API to monitor file‑system changes in real time, covering service creation, directory registration, event handling, key lifecycle, polling methods, a complete runnable example, and an advanced version that leverages virtual threads for efficient concurrency.
This guide walks through configuring comprehensive logging in Spring Boot 3.5 for eight common scenarios—including JPA SQL, transaction flow, JDBC operations, RestTemplate, RestClient, WebClient, controller requests, and Feign calls—providing concrete code samples, YAML settings, and sample output to help developers troubleshoot and monitor applications effectively.
This tutorial shows how to replace manual MySQL query writing with Spring AI by extracting the database schema into Markdown, prompting a large language model to produce precise SQL, and wiring the result through Spring Boot services, a controller, and execution logic.
The article demonstrates four practical techniques—@Qualifier, manual ApplicationContext lookup, Map injection, and a FactoryBean with dynamic proxy—to dynamically select among multiple Spring Boot beans, eliminating static if‑else wiring and improving code flexibility and maintainability.
