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김테드

꾸준하고, 호기심 넘치는 개발자




[스프링부트] [JAVA] [입문] 5. 웹 MVC 개발

업데이트:




✅ @GetMapping 과 @PostMapping

📌 MemberController

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);
		
		// redirect는 :뒤에 /주소로 return시켜준다
		// 여기서는 다시 메인화면을 return
        return "redirect:/";
    }

    @GetMapping("/members")
    public String list(Model model){
        List<Member> members = memberService.findMembers();
        model.addAttribute("members",members);
        return "members/memberList";
    }
}
  • 기본적으로 자바스크립트의 form 태그는 get 방식으로 데이터를 전송한다.
  • @GetMapping 은 get방식으로 전송된 form태그에 접근 시켜준다.
  • @PostMapping은 post방식으로 전송된 form태그에 접근 시켜준다.




📌 /home.html : 메인 화면

  • 회원가입과 회원 목록 으로 구성


<!DOCTYPE HTML>
<html xmlns:th="http://www.thymeleaf.org">
<body>
<div class="container">
    <div>
        <h1>Hello Spring</h1>
        <p>회원 기능</p>
        <p>
            <a href="/members/new">회원 가입</a>
            <a href="/members">회원 목록</a>
        </p>
    </div>
</div> <!-- /container -->
</body>
</html>
  • 회원가입은 /members/new , 회원 목록은 /members 로 주소 설정




📌 /members/createMemberForm.html

<!DOCTYPE HTML>
<html xmlns:th="http://www.thymeleaf.org">
<body>
<div class="container">
	// post방식으로 데이터 전송
    <form action="/members/new" method="post">
        <div class="form-group">
            <label for="name">이름</label>
            <input type="text" id="name" name="name" placeholder="이름을 입력하세요">
        </div>
        <button type="submit">등록</button>
    </form>
</div> <!-- /container -->
</body>
</html>




📌 /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>

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