Differences Between @Service, @Repository, and @Controller in Spring Boot and How to Use Them - From Their Relationship with @Component to Exception Translation
@Service, @Repository, and @Controller are all derived from @Component, but they differ in actual effects beyond DI registration, such as exception translation in @Repository and handler mapping in @Controller. This article demonstrates the differences with source code and verification code, and explains the criteria for choosing annotations for each layer with a quick reference table.