SpringBoot 3.0 removed the traditional spring.factories file to improve startup performance, modularity, and GraalVM native image support, and introduces a new imports‑based registration mechanism with detailed migration steps, code examples, and best‑practice guidance for developers.
SpringBoot 3.0 removes the long‑standing spring.factories file due to performance, modularity, and GraalVM native image challenges, introduces a new imports‑file mechanism, and provides detailed migration steps, code examples, performance comparisons, and best practices for GraalVM integration.
Spring Boot 2.7 marks the spring.factories auto‑configuration loading method as deprecated, and Spring Boot 3 will remove it entirely, prompting developers to adopt the new AutoConfiguration.imports mechanism, which supports configuration slicing, custom SPI extensions, and more elegant handling via tools like mica‑auto.
This tutorial explains how to build a custom Spring Boot starter in four steps—setting up a Maven project, defining auto‑configuration with AOP, registering the starter via spring.factories, and packaging it—so that methods annotated with a custom @AspectLog annotation automatically log their execution duration.
This article explains the common misunderstanding of JdbcTemplate's queryForList method, shows the resulting IncorrectResultSetColumnCountException, clarifies the method's intended use for single‑column results, and walks through Spring Boot's JdbcTemplate auto‑configuration source code and its key annotations.
