개발자되기 프로젝트

1. ex) 문자 -> 숫자 @RestController public class HelloController { @GetMapping("/hello-v1") public String helloV1(HttpServletRequest request){ String data = request.getParameter("data"); //문자 타입 조회 Integer integer = Integer.valueOf(data); //숫자 타입으로 변경 System.out.println("integer = " + integer); return "ok"; } } 분석 localhost:8080/hello-v1?data=10 String data = request.getParameter("data") HTTP 요청 파라미..

The Stpring team recommends that you annotate only concrete classeds with the @Transactinal annotation as apposed to annotating interfaces. you certainly can place the @Transactional annotation on an interface( or an interface method), but this works only as you would expect it to if you use inferface-based proxies. 1. @Transactional은 interface보다는 구체 class에 사용하는 것을 권장 2. interface는, interface-ba..