feat: create user

src/main/java/com/example/demo/constant/Role.java

+package com.example.demo.constant;
+
+public enum Role {
+    USER, ADMIN
+}

src/main/java/com/example/demo/controller/MemberController.java

+package com.example.demo.controller;
+
+import com.example.demo.service.MemberService;
+import com.example.demo.entity.Member;
+import com.example.demo.dto.MemberDto;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.data.repository.query.Param;
+import org.springframework.web.bind.annotation.*;
+import com.google.gson.JsonParser;
+import com.google.gson.JsonElement;
+import com.google.gson.JsonObject;
+import com.example.demo.constant.Role;
+
+
+@RestController
+public class MemberController {
+
+    @Autowired
+    MemberService memberService;
+
+    public Member createMember(){
+        MemberDto memberDto = new MemberDto();
+        memberDto.setEmail("test@email.com");
+        memberDto.setName("홍길동");
+        memberDto.setAddress("서울시 마포구 합정동");
+        memberDto.setPassword("1234");
+        return Member.createMember(memberDto);
+    }
+
+    @RequestMapping(value = "/membertest", method = RequestMethod.GET)
+    public void membertest(){
+
+        Member member = createMember();
+        Member savedMember = memberService.saveMember(member);
+
+        System.out.println(member);
+        System.out.println(savedMember);
+
+    }
+
+    @RequestMapping(value = "/makeMember", method = RequestMethod.POST)
+    public String makeMember(@RequestBody String param){
+    
+        System.out.println(param);
+        JsonElement element = JsonParser.parseString(param);
+        JsonObject object = element.getAsJsonObject();
+    
+        String id = object.get("id").getAsString();
+        System.out.println("id : " + id);
+    
+        String email = object.get("email").getAsString();
+        System.out.println("email : " + email);
+    
+        String address = object.get("address").getAsString();
+        System.out.println("address : " + address);
+    
+        String name = object.get("name").getAsString();
+        System.out.println("name : " + name);
+    
+        String password = object.get("password").getAsString();
+        System.out.println("password : " + password);
+    
+        Member member = new Member();
+        member.setName(name);
+        member.setEmail(email);
+        member.setAddress(address);
+        member.setPassword(password);
+        member.setRole(Role.USER);
+    
+        memberService.saveMember(member);
+    
+        return "OK";
+    
+    }
+
+
+}

src/main/java/com/example/demo/dto/MemberDto.java

+package com.example.demo.dto;
+
+import lombok.Getter;
+import lombok.Setter;
+
+@Getter
+@Setter
+public class MemberDto {
+
+    private String name;
+    private String email;
+    private String password;
+    private String address;
+    
+}

src/main/java/com/example/demo/entity/Member.java

+package com.example.demo.entity;
+import javax.persistence.*;
+import com.example.demo.dto.MemberDto;
+import com.example.demo.constant.Role;
+import lombok.Getter;
+import lombok.Setter;
+import lombok.ToString;
+
+@Entity
+@Table(name="member")
+@Getter
+@Setter
+@ToString
+public class Member {
+
+    @Id
+    @Column(name="member_id")
+    @GeneratedValue(strategy = GenerationType.AUTO)
+    private Long id;
+
+    private String name;
+
+    @Column(unique = true)
+    private String email;
+
+    private String password;
+
+    private String address;
+
+    @Enumerated(EnumType.STRING)
+    private Role role;
+
+    public static Member createMember(MemberDto memberDto){
+        Member member = new Member();
+        member.setName(memberDto.getName());
+        member.setEmail((memberDto.getEmail()));
+        member.setAddress((memberDto.getAddress()));
+        member.setPassword(memberDto.getPassword());
+        member.setRole(Role.USER);
+        return member;
+
+    }
+}

src/main/java/com/example/demo/repository/MemberRepository.java

+package com.example.demo.repository;
+
+import org.springframework.data.jpa.repository.JpaRepository;
+import com.example.demo.entity.*;
+
+public interface MemberRepository extends JpaRepository<Member, Long>{
+
+    Member findByEmail(String email);
+    
+}

src/main/java/com/example/demo/service/MemberService.java

+package com.example.demo.service;
+
+import com.example.demo.entity.Member;
+import com.example.demo.repository.MemberRepository;
+import lombok.RequiredArgsConstructor;
+
+import org.springframework.scheduling.annotation.Async;
+import org.springframework.stereotype.Service;
+
+import javax.transaction.Transactional;
+
+@Service
+@Transactional
+@RequiredArgsConstructor
+public class MemberService {
+
+    private final MemberRepository memberRepository;
+
+   public Member saveMember(Member member){
+        validateDuplicatetMember(member);
+
+        return memberRepository.save(member);
+    }
+
+    
+    private boolean validateDuplicatetMember(Member member){
+        
+            Member findMember = memberRepository.findByEmail(member.getEmail());
+            if(findMember != null){
+                System.out.println("이미 가입된 회원입니다.");
+                return false;
+            }
+    
+            return true;
+     
+    }
+
+}