[Spring] 인프런 강의 필기 (4) - 회원 관리 예제 : 웹 MVC 개발

김재연·2022년 10월 18일
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Spring Boot 공부

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1. 홈화면

// src/main/java/hello/hellospring/controller/HomeController.java
package hello.hellospring.controller;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.GetMapping;

@Controller
public class HomeController {
    @GetMapping("/")
    public String home() {
        return "home";
    }
}
<!-- src/main/resources/templates/home.html -->
<div class="container">
    <div>
        <h1>Hello Spring</h1>
        <p>회원 기능</p>
        <p>
            <a href="/members/new">회원가입</a>
            <a href="/members">회원목록</a>
        </p>
    </div>
</div>

원래 아무것도 없으면 /으로 들어갔을 때 static/index.html이 뜨는데 여기서 컨트롤러 HomeController를 만들어줬으니까 우선순위에 따라 static/index.html이 아니라 templates/home.html을 띄운다.


2. 등록

GET : 폼 창 반환

// src/main/java/hello/hellospring/controller/MemberController.java
@Controller
public class MemberController {
    @GetMapping("/members/new")
    public String createForm() {
        return "members/createMemberForm";
    }
}
<!--src/main/resources/templates/members/createMemberForm.html-->
<div class="container">
    <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>

POST : 회원 등록

// src/main/java/hello/hellospring/controller/MemberController.java
@Controller
public class MemberController {
    @PostMapping("/members/new")
    public String create(MemberForm form) {
        Member member = new Member();
        member.setName(form.getName());
        memberService.join(member);
        return "redirect:/";
    }
}
// src/main/java/hello/hellospring/controller/MemberForm.java
public class MemberForm {
    private String name;

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }
}


3. 조회

// src/main/java/hello/hellospring/controller/MemberController.java
@Controller
public class MemberController {
    @GetMapping("/members")
    public String list(Model model) {
        List<Member> members = memberService.findMembers();
        model.addAttribute("members", members);
        return "members/memberList";
    }
}
<!--src/main/resources/templates/members/memberList.html-->
<html lang="en" xmlns="http://www/thymeleaf.org">
  ...
<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>

서버를 껐다가 켜면 다 사라져있다.
=> 디비 연동 해야함

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