[Spring MVC] 컨트롤러 병합

스프링 MVC - 컨트롤러 통합

@RequestMapping을 잘 보면 클래스 단위가 아니라 메서드 단위에 적용된 것을 확인할 수 있다. 

따라서 컨트롤러 클래스를 유연하게 하나로 통합할 수 있다.

 

 

SpringMemberControllerV2

@Controller
@RequestMapping("/springmvc/v2/members")
public class SpringMemberControllerV2 {

    private MemberRepository memberRepository = MemberRepository.getInstance();

    @RequestMapping("/new-form")
    public ModelAndView newForm() {
        return new ModelAndView("new-form");
    }

    @RequestMapping("/save")
    public ModelAndView save(HttpServletRequest request, HttpServletResponse response) {
        String username = request.getParameter("username");
        int age = Integer.parseInt(request.getParameter("age"));

        Member member = new Member(username, age);
        memberRepository.save(member);

        ModelAndView mv = new ModelAndView("save-result");
        mv.addObject("member", member);
        return mv;
    }

    @RequestMapping
    public ModelAndView members() {
        List<Member> members = memberRepository.findAll();
        //Model에 데이터 보관
        ModelAndView mv = new ModelAndView("members");
        mv.addObject("members", members);

        return mv;
    }
}

 

조합

컨트롤러 클래스를 통합하는 것을 넘어서 조합도 가능하다.
다음 코드는 /springmvc/v2/members라는 부분에 중복이 있다.

• @RequestMapping("/springmvc/v2/members/new-form")
• @RequestMapping("/springmvc/v2/members")
• @RequestMapping("/springmvc/v2/members/save")

 

물론 이렇게 사용해도 되지만, 컨트롤러를 통합한 예제 코드를 보면 중복을 어떻게 제거했는지 확인할 수 있다.
클래스 레벨에 다음과 같이 @RequestMapping을 두면 메서드 레벨과 조합이 된다.

 

@Controller
@RequestMapping("/springmvc/v2/members")
public class SpringMemberControllerV2 {}

 

 

조합 결과

• 클래스 레벨 @RequestMapping("/springmvc/v2/members")
  • 메서드 레벨 @RequestMapping("/new-form") -> /springmvc/v2/members/new-form
  • 메서드 레벨 @RequestMapping("/save") -> /springmvc/v2/members/save
  • 메서드 레벨 @RequestMapping -> /springmvc/v2/members

 

 

실행

• 등록: http://localhost:8080/springmvc/v2/members/new-form
• 목록: http://localhost:8080/springmvc/v2/members

 

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출처 : https://www.inflearn.com/course/%EC%8A%A4%ED%94%84%EB%A7%81-mvc-1