[Spring Boot] 8. Spring Boot Project (Store v2)_1.User - Join

Mar 31, 2025

[Spring Boot] 8. Spring Boot Project (Store v2)_1.User - Join

Contents

header join UserRequest UserController UserService UserRepository

header


<!DOCTYPE html>
<html lang="en">
<head>
    <title>Store</title>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/css/bootstrap.min.css" rel="stylesheet">
    <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/js/bootstrap.bundle.min.js"></script>
</head>
<body>

<nav class="navbar navbar-expand-sm bg-dark navbar-dark">
    <div class="container-fluid">
        <a class="navbar-brand" href="/">Home</a>
        <button class="navbar-toggler" type="button" data-bs-toggle="collapse" data-bs-target="#collapsibleNavbar">
            <span class="navbar-toggler-icon"></span>
        </button>
        <div class="collapse navbar-collapse" id="collapsibleNavbar">
            <ul class="navbar-nav">
                <li class="nav-item">
                    <a class="nav-link" href="/join-form">회원가입</a>
                </li>
                <li class="nav-item">
                    <a class="nav-link" href="#">로그인</a>
                </li>
                <li class="nav-item">
                    <a class="nav-link" href="#">상품목록</a>
                </li>
                <li class="nav-item">
                    <a class="nav-link" href="#">상품등록</a>
                </li>
                <li class="nav-item">
                    <a class="nav-link" href="#">구매목록</a>
                </li>
                <li class="nav-item">
                    <a class="nav-link" href="#">로그아웃</a>
                </li>
            </ul>
        </div>
    </div>
</nav>
<!--네브바종료-->

join


{{> layout/header}}

<div class="container mt-2">
    <div class="mt-4 p-5 bg-light text-dark rounded-4">
        <h1>회원가입 페이지</h1>
        <form action="/join" method="post">
            <div class="mb-3 mt-3">
                <input type="text" class="form-control" placeholder="Enter username" name="username">
            </div>
            <div class="mb-3">
                <input type="password" class="form-control" placeholder="Enter password" name="password">
            </div>
            <div class="mb-3">
                <input type="text" class="form-control" placeholder="Enter fullname" name="fullname">
            </div>
            <button type="submit" class="btn btn-primary">회원가입</button>
        </form>
    </div>
</div>
</body>
</html>

UserRequest


package com.metacoding.storev2.user;

import lombok.Data;

public class UserRequest {

    @Data
    public static class JoinDTO {
        private String username;
        private String password;
        public String fullname;
    }

}

UserController


package com.metacoding.storev2.user;

import jakarta.servlet.http.HttpSession;
import lombok.RequiredArgsConstructor;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PostMapping;

@RequiredArgsConstructor
@Controller
public class UserController {
    private final UserService userService;
    private final HttpSession session;

    @GetMapping("/")
    public String home() {
        return "home";
    }

    @GetMapping("/login-form")
    public String loginForm() {
        return "user/login-form";
    }


    @GetMapping("/join-form")
    public String joinForm() {
        return "user/join-form";
    }

    @PostMapping("/join")
    public String join(UserRequest.JoinDTO joinDTO) {
        userService.회원가입(joinDTO);
        return "redirect:/login-form";
    }

}

UserService


package com.metacoding.storev2.user;

import lombok.RequiredArgsConstructor;
import org.springframework.stereotype.Service;

@RequiredArgsConstructor
@Service
public class UserService {
    private final UserRepository userRepository;

		@Transactional
    public void 회원가입(UserRequest.JoinDTO joinDTO) {
        // 1. 동일 회원 있는지 검사
        User user = userRepository.findByUsername(joinDTO.getUsername());
        if (user != null) {
            throw new RuntimeException("동일한 username이 존재합니다.");
        }

        // 2. 회원가입
        userRepository.save(joinDTO.getUsername(), joinDTO.getPassword(), joinDTO.getFullname());

    }

    
}

UserRepository


package com.metacoding.storev2.user;

import jakarta.persistence.EntityManager;
import jakarta.persistence.Query;
import lombok.RequiredArgsConstructor;
import org.springframework.stereotype.Repository;
import org.springframework.transaction.annotation.Transactional;

@RequiredArgsConstructor
@Repository
public class UserRepository {
    private final EntityManager em;

    public User findByUsername(String username) {
        Query query = em.createNativeQuery("select * from user_tb where username = ?", User.class);
        query.setParameter(1, username);
        try {
            return (User) query.getSingleResult();
        } catch (RuntimeException e) {
            return null;
        }
    }

    public void save(String username, String password, String fullname) {
        Query query = em.createNativeQuery("insert into user_tb(username,password,fullname,created_at) values(?,?,?,now())");
        query.setParameter(1, username);
        query.setParameter(2, password);
        query.setParameter(3, fullname);
        query.executeUpdate();

    }
}