feat(user-service): 고객 고유번호 리스트로 고객 가져오기 API 구현

user-service/src/main/java/com/justpickup/userservice/domain/user/service/UserService.java

@@ -3,7 +3,10 @@ package com.justpickup.userservice.domain.user.service;
 import com.justpickup.userservice.domain.user.dto.CustomerDto;
 import com.justpickup.userservice.domain.user.dto.StoreOwnerDto;
 
+import java.util.List;
+
 public interface UserService {
     CustomerDto findCustomerByUserId(Long userId);
     void saveStoreOwner(StoreOwnerDto storeOwnerDto);
+    List<CustomerDto> findCustomerByUserIds(List<Long> userIds);
 }

user-service/src/main/java/com/justpickup/userservice/domain/user/service/UserServiceImpl.java

@@ -22,10 +22,12 @@ import org.springframework.transaction.annotation.Transactional;
 
 import java.util.ArrayList;
 import java.util.Collection;
+import java.util.List;
+import java.util.stream.Collectors;
 
 @Service
 @RequiredArgsConstructor
-@Transactional(readOnly = true,propagation = Propagation.SUPPORTS)
+@Transactional(readOnly = true, propagation = Propagation.SUPPORTS)
 @Slf4j
 public class UserServiceImpl implements UserService, UserDetailsService {
 
@@ -64,7 +66,15 @@ public class UserServiceImpl implements UserService, UserDetailsService {
         StoreOwner storeOwner = new StoreOwner(email, encode, storeOwnerDto.getName(),
                 storeOwnerDto.getPhoneNumber(), storeOwnerDto.getBusinessNumber());
 
-        StoreOwner save = userRepository.save(storeOwner);
+        userRepository.save(storeOwner);
+    }
+
+    @Override
+    public List<CustomerDto> findCustomerByUserIds(List<Long> userIds) {
+        return customerRepository.findAllById(userIds)
+                .stream()
+                .map(CustomerDto::new)
+                .collect(Collectors.toList());
     }
 
 }

user-service/src/main/java/com/justpickup/userservice/domain/user/web/UserController.java

@@ -16,6 +16,8 @@ import org.springframework.web.bind.annotation.*;
 import javax.validation.Valid;
 import javax.validation.constraints.Email;
 import javax.validation.constraints.NotEmpty;
+import java.util.List;
+import java.util.stream.Collectors;
 
 @RestController
 @RequiredArgsConstructor
@@ -35,6 +37,19 @@ public class UserController {
                 .body(Result.createSuccessResult(getCustomerResponse));
     }
 
+    @GetMapping("/customers/{userIds}")
+    public ResponseEntity getCustomers(@PathVariable List<Long> userIds) {
+
+        List<CustomerDto> customers = userService.findCustomerByUserIds(userIds);
+
+        List<GetCustomerResponse> responses = customers
+                .stream()
+                .map(GetCustomerResponse::new)
+                .collect(Collectors.toList());
+
+        return ResponseEntity.ok(Result.createSuccessResult(responses));
+    }
+
     @Data @NoArgsConstructor @AllArgsConstructor
     static class GetCustomerResponse {
         private Long userId;