Updated:

회원 웹 기능 - 홈 화면 추가

src/main/java/hello.hellospring/controller에 HomeController.java를 생성한다.

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/templates에 home.html을 생성한다.

<!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>

 index.html이 있었지만, Controller가 우선순위가 높기 때문에 localhost:8080/ 에서home.html이 실행이 된다.

회원 웹 기능 - 등록

 MemberController.java에 코드를 추가한다.

package hello.hellospring.controller;

import hello.hellospring.service.MemberService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.GetMapping;

@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";
    }
}

templates폴더에 members폴더를 만들고, createMemberForm.html을 생성한다.

<!DOCTYPE HTML>
<html xmlns:th="http://www.thymeleaf.org">
<body>

<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> <!-- /container -->
</body>
</html>

controller에 MemberForm.java를 생성한다.

package hello.hellospring.controller;

public class MemberForm {
    private String name;

    public String getName() {
        return name;
    }

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

 이후 MemberContoller.java에 코드를 추가한다.

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.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PostMapping;

@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;/"; // 회원가입이 끝나면 다시 홈화면으로
    }
}

회원 웹 기능 - 조회

 MemberContoller.java에 코드를 추가한다.

package hello.hellospring.controller;

import org.springframework.ui.Model;
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.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PostMapping;

import java.util.List;

@Controller // 스프링 컨테이너가 MemberController 객체를 생성함
public class MemberController {

    // private final MemberService memberService = new MemberService();
    // new로 만들면 여러 컨트롤러에서 MemberService()를 가져다 사용할 수 있음, 이렇게 사용하지않음

    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;/"; // 회원가입이 끝나면 다시 홈화면으로
    }

    @GetMapping(value = "/members")
    public String list(Model model) {
        List<Member> members = memberService.findMembers();
        model.addAttribute("members", members);
        return "members/memberList";
    }
}

templates/members에 memberList.html을 추가한다.

<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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