feat: 회원가입 API 구현

src/main/java/com/umc/dream/controller/UserController.java

@@ -0,0 +1,29 @@
+package com.umc.dream.controller;
+
+import com.umc.dream.apiPayload.ApiResponse;
+import com.umc.dream.domain.User;
+import com.umc.dream.dto.UserRequestDTO;
+import com.umc.dream.dto.UserResponseDTO;
+import com.umc.dream.service.UserService.UserService;
+import com.umc.dream.converter.UserConverter;
+import io.swagger.v3.oas.annotations.Operation;
+import lombok.RequiredArgsConstructor;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+@RestController
+@RequiredArgsConstructor
+@RequestMapping("/user")
+public class UserController {
+
+    private final UserService userService;
+
+    @Operation(summary = "회원가입 API")
+    @PostMapping("/join")
+    public ApiResponse<UserResponseDTO.JoinResultDTO> join(@RequestBody UserRequestDTO.JoinDto request){
+        User user = userService.join(request);
+        return ApiResponse.onSuccess(UserConverter.toJoinResultDTO(user));
+    }
+}

src/main/java/com/umc/dream/converter/UserConverter.java

@@ -0,0 +1,27 @@
+package com.umc.dream.converter;
+
+import com.umc.dream.domain.User;
+import com.umc.dream.domain.enums.Role;
+import com.umc.dream.dto.UserRequestDTO;
+import com.umc.dream.dto.UserResponseDTO;
+
+import java.time.LocalDateTime;
+
+public class UserConverter {
+    public static UserResponseDTO.JoinResultDTO toJoinResultDTO(User user) {
+        return UserResponseDTO.JoinResultDTO.builder()
+                .userId(user.getId())
+                .createdAt(LocalDateTime.now())
+                .build();
+    }
+
+
+    public static User toUser(UserRequestDTO.JoinDto joinDto) {
+        return User.builder()
+                .name(joinDto.getName())
+                .account(joinDto.getAccount())
+                .password(joinDto.getPassword())
+                .role(Role.NORMAL)
+                .build();
+    }
+}

src/main/java/com/umc/dream/domain/Dream.java

@@ -21,7 +21,7 @@ public class Dream extends BaseEntity {
     private Long id;
 
     @ManyToOne(fetch = FetchType.LAZY)
-    @JoinColumn(name = "users_id", nullable = false)
+    @JoinColumn(name = "user_id", nullable = false)
     private User user;
 
     private LocalDate date;

src/main/java/com/umc/dream/domain/Character.java → src/main/java/com/umc/dream/domain/People.java

@@ -9,7 +9,7 @@
 @Entity
 @Getter
 @NoArgsConstructor(access = AccessLevel.PROTECTED)
-public class Character extends BaseEntity {
+public class People extends BaseEntity {
 
     @Id
     @GeneratedValue(strategy = GenerationType.IDENTITY)

src/main/java/com/umc/dream/dto/UserRequestDTO.java

@@ -0,0 +1,21 @@
+package com.umc.dream.dto;
+
+import jakarta.validation.constraints.NotBlank;
+import jakarta.validation.constraints.NotNull;
+import lombok.Getter;
+
+public class UserRequestDTO {
+
+    @Getter
+    public static class JoinDto {
+        @NotBlank
+        String name;
+        @NotNull
+        String account;
+        @NotNull
+        String password;
+        @NotNull
+        String passwordConfirm;
+    }
+
+}

src/main/java/com/umc/dream/dto/UserResponseDTO.java

@@ -0,0 +1,21 @@
+package com.umc.dream.dto;
+
+import lombok.AllArgsConstructor;
+import lombok.Builder;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+
+import java.time.LocalDateTime;
+
+public class UserResponseDTO {
+
+    @Builder
+    @Getter
+    @NoArgsConstructor
+    @AllArgsConstructor
+    public static class JoinResultDTO{
+        Long userId;
+        LocalDateTime createdAt;
+    }
+
+}

src/main/java/com/umc/dream/repository/UserRepository.java

@@ -0,0 +1,7 @@
+package com.umc.dream.repository;
+
+import com.umc.dream.domain.User;
+import org.springframework.data.jpa.repository.JpaRepository;
+
+public interface UserRepository extends JpaRepository<User, Long> {
+}

src/main/java/com/umc/dream/service/UserService/UserService.java

@@ -0,0 +1,8 @@
+package com.umc.dream.service.UserService;
+
+import com.umc.dream.domain.User;
+import com.umc.dream.dto.UserRequestDTO;
+
+public interface UserService {
+    User join(UserRequestDTO.JoinDto request);
+}

src/main/java/com/umc/dream/service/UserService/UserServiceImpl.java

@@ -0,0 +1,22 @@
+package com.umc.dream.service.UserService;
+
+import com.umc.dream.converter.UserConverter;
+import com.umc.dream.domain.User;
+import com.umc.dream.dto.UserRequestDTO;
+import com.umc.dream.repository.UserRepository;
+import lombok.RequiredArgsConstructor;
+import org.springframework.stereotype.Service;
+
+@Service
+@RequiredArgsConstructor
+public class UserServiceImpl implements UserService {
+
+    private final UserRepository userRepository;
+
+    @Override
+    public User join(UserRequestDTO.JoinDto request) {
+        User user = UserConverter.toUser(request);
+        return userRepository.save(user);
+    }
+
+}