SPRING

간단한 회원 관리 예제6-회원조회

2022년 04월 06일

회원관리 스프링

hello-spring\src\main\java\hello\hellospring\controller\MemberController.java

package hello.hellospring.controller;

import hello.hellospring.domain.Member;
import hello.hellospring.service.MemberService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PostMapping;

import java.util.List;

@Controller
public class MemberController {

    private final MemberService memberService;

    @Autowired
    public MemberController(MemberService memberService) {
        this.memberService = memberService;
    }

    @GetMapping("/members/new")
    public String createForm() {

        return "members/createMemberForm";
    }

    @PostMapping("/members/new")
    public String create(MemberForm form) {

        Member member = new Member();
        member.setName(form.getName());

        memberService.join(member);

        return "redirect:/";
    }

    @GetMapping("/members")
    public String list(Model model) {

        List<Member> members = memberService.findMembers();
        model.addAttribute("members", members);

        return "members/memberList";
    }
}

@GetMapping(“/members)

    @GetMapping("/members")
    public String list(Model model) {

        List<Member> members = memberService.findMembers();
        model.addAttribute("members", members);

        return "members/memberList";
    }

members는 모든 회원을 조회해서 List로 담아놨음
model.addAttribute(String key, Object value)

hello-spring\src\main\resources\templates\members\memberList.html

<!DOCTYPE HTML>
<html xmlns:th="http://www.thymeleaf.org">
<body>
<div class="container">
    <div>
        <table>
            <thead> <tr>
                <th>#</th>
                <th>이름</th>
            </tr>
            </thead>
            <tbody>
            <tr th:each="member : ${members}">
                <td th:text="${member.id}"></td>
                <td th:text="${member.name}"></td>
            </tr>
            </tbody>
        </table>
    </div>
</div> <!-- /container -->
</body>
</html>

결과

회원 등록 후 회원 목록 클릭하면 나온다.
로컬서버를 껐다가 다시 키면 사라진다.
이유는 데이터베이스가 아니라 메모리의 어느 한 부분에 저장되어 있기 때문에 서버 내리는 순간 사라진다.