feat: 이메일로 멤버 정보 조회 메소드 추가

- MemberEmailDTO.java: email 을 받기 위한 DTO 추가
- MemberRepository.java: findByEmail로 DB 조회하는 코드 추가
- MemberService.java: 이메일로 멤버를 조회하는 서비스단 코드 추가
- UserController.java: 이메일로 멤버를 조회하는 컨트롤러단 코드 추가

back-end/src/main/java/kr/co/ssalon/domain/repository/MemberRepository.java

@@ -15,4 +15,5 @@ public interface MemberRepository extends JpaRepository<Member,Long>, MemberRepo
 
     List<Member> findByBlackReasonIsNotNull();
 
+    Optional<Member> findByEmail(String email);
 }

back-end/src/main/java/kr/co/ssalon/domain/service/MemberService.java

@@ -57,6 +57,13 @@ public Member findMember(Long id) throws BadRequestException {
         return member;
     }
 
+    public Member findMemberByEmail(String email) throws BadRequestException {
+        Optional<Member> findMember = memberRepository.findByEmail(email);
+        Member member = ValidationService.validationMember(findMember);
+        return member;
+    }
+
+
     public List<Member> findAllMember() {
         return memberRepository.findAll();
     }

back-end/src/main/java/kr/co/ssalon/web/controller/UserController.java

@@ -8,6 +8,7 @@
 import io.swagger.v3.oas.annotations.tags.Tag;
 import kr.co.ssalon.domain.dto.MemberDomainDTO;
 import kr.co.ssalon.domain.entity.Member;
+import kr.co.ssalon.domain.repository.MemberRepository;
 import kr.co.ssalon.domain.service.MemberService;
 import kr.co.ssalon.oauth2.CustomOAuth2Member;
 import kr.co.ssalon.web.dto.*;
@@ -28,6 +29,7 @@
 public class UserController {
 
     private final MemberService memberService;
+    private final MemberRepository memberRepository;
 
     @Operation(summary = "회원가입")
     @ApiResponses(value = {
@@ -76,6 +78,17 @@ public MemberDomainDTO getUserInfo(@AuthenticationPrincipal CustomOAuth2Member c
         return new MemberDomainDTO(member);
     }
 
+    @Operation(summary = "이메일로 회원 정보 조회")
+    @ApiResponses(value = {
+            @ApiResponse(responseCode = "200", description = "이메일로 회원 정보 조회 성공"),
+    })
+    @GetMapping("/api/users/email/profile")
+    public MemberDomainDTO getUserInfoByEmail(@AuthenticationPrincipal CustomOAuth2Member customOAuth2Member, @RequestBody MemberEmailDTO memberEmailDTO) throws BadRequestException {
+        Member member = memberService.findMemberByEmail(memberEmailDTO.getEmail());
+        return new MemberDomainDTO(member);
+    }
+
+
     @Operation(summary = "회원 정보 수정")
     @ApiResponses(value = {
             @ApiResponse(responseCode = "200", description = "회원 정보 수정 성공"),

back-end/src/main/java/kr/co/ssalon/web/dto/MemberEmailDTO.java

@@ -0,0 +1,17 @@
+package kr.co.ssalon.web.dto;
+
+import lombok.AllArgsConstructor;
+import lombok.Builder;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+
+@Data
+@NoArgsConstructor
+@AllArgsConstructor
+@Builder
+public class MemberEmailDTO {
+
+    private String email;
+
+}
+