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스프링/스프링 웹 개발 활용

[Spring] 회원가입 구현

by drCode 2023. 11. 10.
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회원가입을 하려면 Member class가 있어야 한다.

 

Member.java

package hello.login.domain.member;

import lombok.Data;

import javax.validation.constraints.NotEmpty;

@Data
public class Member {

    private Long id;

    @NotEmpty
    private String loginId;  // 로그인 ID
    @NotEmpty
    private String name; // 사용자 이름
    @NotEmpty
    private String password;
}

 

 

MemberRepository.java

package hello.login.domain.member;

import lombok.extern.slf4j.Slf4j;
import org.springframework.stereotype.Repository;

import javax.swing.text.html.Option;
import java.util.*;

@Slf4j
@Repository
public class MemberRepository {

    private static Map<Long, Member> store = new HashMap<>(); // static 사용
    private static Long sequence = 0L;

    public Member save(Member member) {
        member.setId(++sequence);
        log.info("save : member={}", member);
        store.put(member.getId(), member);
        return member;
    }

    public Member findById(Long id) {
        return store.get(id);
    }

    public Optional<Member> findByLoginId(String loginId) {
        /*List<Member> all = findAll();
        for (Member m : all) {
            if(m.getLoginId().equals(loginId)) {
                return Optional.of(m);
            }
        }

        return Optional.empty();*/

        // 조건에 맞는 것만 반환함
        // 자바 8버전 이상에서는 stream, Lambda는 기본으로 씀
        return findAll().stream()
                .filter(m -> m.getLoginId().equals(loginId))
                .findFirst();
    }

    public List<Member> findAll() {
        ArrayList<Member> members = new ArrayList<>(store.values());
        return members;
    }
}

 

MemberController.java

package hello.login.web.member;

import hello.login.domain.member.Member;
import hello.login.domain.member.MemberRepository;
import lombok.RequiredArgsConstructor;
import org.springframework.stereotype.Controller;
import org.springframework.validation.BindingResult;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.ModelAttribute;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;

import javax.validation.Valid;

@Controller
@RequiredArgsConstructor
@RequestMapping("/members")
public class MemberController {
    private final MemberRepository memberRepository;

    @GetMapping("/add")
    public String addForm(@ModelAttribute("member") Member member) {
        return "members/addMemberForm";
    }

    @PostMapping("/add")
    public String save(@Valid @ModelAttribute Member member, BindingResult bindingResult) {
        if(bindingResult.hasErrors()) {
            return "members/addMemberForm";
        }

        memberRepository.save(member);
        return "redirect:/";
    }
}

 

@ModelAttribute("member") 를 @ModelAttribute 로 변경해도 결과는 같다.

가끔 어떤 IDE에서는 인식 문제가 있어서 적용했다

 

회원 가입 뷰 템플릿

templates/members/addMemberForm.html

<!DOCTYPE HTML>
<html xmlns:th="http://www.thymeleaf.org">
<head>
    <meta charset="utf-8">
    <link th:href="@{/css/bootstrap.min.css}"
          href="../css/bootstrap.min.css" rel="stylesheet">
    <style>
        .container {
            max-width: 560px;
        }
        .field-error {
            border-color: #dc3545;
            color: #dc3545;
        }
    </style>
</head>
<body>
<div class="container">
    <div class="py-5 text-center">
        <h2>회원 가입</h2>
    </div>
    <h4 class="mb-3">회원 정보 입력</h4>
    <form action="" th:action th:object="${member}" method="post">
        <div th:if="${#fields.hasGlobalErrors()}">
            <p class="field-error" th:each="err : ${#fields.globalErrors()}"
               th:text="${err}">전체 오류 메시지</p>
        </div>
        <div>
            <label for="loginId">로그인 ID</label>
            <input type="text" id="loginId" th:field="*{loginId}" class="form-control"
                   th:errorclass="field-error">
            <div class="field-error" th:errors="*{loginId}" />
        </div>
        <div>
            <label for="password">비밀번호</label>
            <input type="password" id="password" th:field="*{password}"
                   class="form-control"
                   th:errorclass="field-error">
            <div class="field-error" th:errors="*{password}" />
        </div>
        <div>
            <label for="name">이름</label>
            <input type="text" id="name" th:field="*{name}" class="form-control"
                   th:errorclass="field-error">
            <div class="field-error" th:errors="*{name}" />
        </div>
        <hr class="my-4">
        <div class="row">
            <div class="col">
                <button class="w-100 btn btn-primary btn-lg" type="submit">회원
                    가입</button>
            </div>
            <div class="col">
                <button class="w-100 btn btn-secondary btn-lg"
                        onclick="location.href='items.html'"
                        th:onclick="|location.href='@{/}'|"
                        type="button">취소</button>
            </div>
        </div>
    </form>
</div> <!-- /container -->
</body>
</html>

 

 

addMemberForm

 

 

회원용 테스트 데이터 추가

편의상 테스트용 회원 데이터를 추가하자.

loginId : test

password : test!

name : 테스터

 

TestDataInit.java

package hello.login;

import hello.login.domain.item.Item;
import hello.login.domain.item.ItemRepository;
import hello.login.domain.member.Member;
import hello.login.domain.member.MemberRepository;
import lombok.RequiredArgsConstructor;
import org.springframework.stereotype.Component;

import javax.annotation.PostConstruct;

@Component
@RequiredArgsConstructor
public class TestDataInit {

    private final ItemRepository itemRepository;
    private final MemberRepository memberRepository;

    /**
     * 테스트용 데이터 추가
     */
    @PostConstruct
    public void init() {
        itemRepository.save(new Item("itemA", 10000, 10));
        itemRepository.save(new Item("itemB", 20000, 20));

        Member member = new Member();
        member.setLoginId("test");
        member.setPassword("test!");
        member.setName("테스터");
        memberRepository.save(member);
    }

}

 

PostConstruct

 

TestDataInit.java 에 등록해둔 PostConstruct에 보면 미리 정의해놓은 데이터가 있는데

 

이를 아래와 같이 확인할 수 있다.

save : member=Member(id=1, loginId=test, name=테스터, password=test!)

 

 

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