Spring21 [Spring] spring Framework IOC(Inversion of Control) - 제어의 역전 DI(Dependency injection) - 의존 관계 객체 자동 DL(Dependency Lookup) ##DI(Dependency injection) 1,xml 2,anotaion 3,configuration java class ##xml ex) Book dto 1 = new Magazine(); dto.setXXX(XXX); Book dto 1 = new Magazine(); //다형성 Book magazine = new Magazine("a","b"); Book comicbook = new ComicBook("a","b"); BookDao dao = BookDaoImpl.getInstance(); request.setAttribut.. 2022. 10. 19. 이전 1 ··· 3 4 5 6 다음
