Feat/11 : 무한스크롤 기능 구현

build.gradle

@@ -24,7 +24,7 @@ repositories {
 }
 
 dependencies {
-//	implementation 'org.springframework.boot:spring-boot-starter-data-jpa'
+	implementation 'org.springframework.boot:spring-boot-starter-data-mongodb'
 	implementation 'org.springframework.boot:spring-boot-starter-web'
 	implementation 'org.springframework.boot:spring-boot-starter-websocket'
 	implementation group: 'org.webjars', name: 'stomp-websocket', version: '2.3.3-1'

src/main/java/Be9room/festime/apiPayLoad/code/status/ErrorStatus.java

@@ -15,7 +15,8 @@ public enum ErrorStatus implements BaseErrorCode {
     _UNAUTHORIZED(HttpStatus.UNAUTHORIZED,"COMMON401","인증이 필요합니다."),
     _FORBIDDEN(HttpStatus.FORBIDDEN, "COMMON403", "금지된 요청입니다."),
 
-    // 멤버 관려 예외
+    //페이지 관련 에러
+    _PAGE_ERROR(HttpStatus.INTERNAL_SERVER_ERROR, "PAGE2001", "page 번호는 0 이상이여야 합니다")
     ;
     private final HttpStatus httpStatus;
     private final String code;

src/main/java/Be9room/festime/apiPayLoad/code/status/SuccessStatus.java

@@ -13,7 +13,10 @@ public enum SuccessStatus implements BaseCode {
     _OK(HttpStatus.OK, "COMMON200","success"),
 
     //멤버 관련 응답
-    MEMBER_ENTER(HttpStatus.OK, "MEMBER2001", "member entered")
+    MEMBER_ENTER(HttpStatus.OK, "MEMBER2001", "member entered"),
+
+    //방명록 관련 응답
+    MESSAGE_RETURN(HttpStatus.OK,"GUESTBOOK2001", "message list returned")
     ;
 
     private final HttpStatus httpStatus;

src/main/java/Be9room/festime/controller/MemberController.java

@@ -26,6 +26,4 @@ public ApiResponse<MemberDto.MemberResponseDto> enter(){
         return ApiResponse.of(SuccessStatus.MEMBER_ENTER, memberDto);
     }
 
-
-
 }

src/main/java/Be9room/festime/controller/MessageController.java

@@ -1,29 +1,41 @@
 package Be9room.festime.controller;
 
-import Be9room.festime.dto.MessageDto;
+import Be9room.festime.apiPayLoad.ApiResponse;
+import Be9room.festime.apiPayLoad.code.status.SuccessStatus;
+import Be9room.festime.converter.MessageConverter;
+import Be9room.festime.domain.Message;
+import Be9room.festime.dto.MessageChatDto;
+import Be9room.festime.dto.MessageWebDto;
 import Be9room.festime.enums.MessageType;
+import Be9room.festime.service.MessageService;
+import Be9room.festime.validation.annotation.CheckPage;
 import lombok.RequiredArgsConstructor;
 import lombok.extern.slf4j.Slf4j;
+import org.springframework.data.domain.Page;
 import org.springframework.messaging.handler.annotation.MessageMapping;
 import org.springframework.messaging.simp.SimpMessagingTemplate;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RequestParam;
 import org.springframework.web.bind.annotation.RestController;
 
 @RestController
 @RequiredArgsConstructor
 @Slf4j
 public class MessageController {
     private final SimpMessagingTemplate template;
+    private final MessageService messageService;
     /**
      * 채팅 입장
      * /pub/chat/enter 로 보내면 여기로 온다.
      * @param message
      */
     @MessageMapping(value = "/guestbook/enter")
-    public void enter(MessageDto message){
+    @Deprecated
+    public void enter(MessageChatDto message){
         message.setMessageType(MessageType.ENTER.toString());
         message.setMessage(message.getMemberName() + "님이 방명록에 참여했어요!");
 
-        /* 메세지 저장 부분 */
+        messageService.save(message);
 
         template.convertAndSend("/topic/guestbook", message);
     }
@@ -33,10 +45,10 @@ public void enter(MessageDto message){
      * @param message
      */
     @MessageMapping(value = "/guestbook/message")
-    public void message(MessageDto message){
+    public void message(MessageChatDto message){
         message.setMessageType(MessageType.MESSAGE.toString());
 
-        /* 메세지 저장 부분 */
+        messageService.save(message);
 
         template.convertAndSend("/topic/guestbook", message);
     }
@@ -46,14 +58,21 @@ public void message(MessageDto message){
      * @param message
      */
     @MessageMapping(value = "/guestbook/leave")
-    public void leave(MessageDto message){
+    @Deprecated
+    public void leave(MessageChatDto message){
         message.setMessageType(MessageType.LEAVE.toString());
         message.setMessage(message.getMemberName() + "님이 방명록에서 나가셨어요!");
 
-        /* 메세지 저장 부분 */
+        messageService.save(message);
 
         template.convertAndSend("/topic/guestbook",  message);
     }
 
+    @GetMapping(value = "/message")
+    public ApiResponse<MessageWebDto.MessageResponseDtoList> getMessageList(@CheckPage @RequestParam(name = "page") Integer page){
+        Page<Message> messagePage = messageService.getMessages(page);
+        MessageWebDto.MessageResponseDtoList messageResponseDtoList = MessageConverter.toMessageResponseDtoList(messagePage);
+        return ApiResponse.of(SuccessStatus.MESSAGE_RETURN, messageResponseDtoList);
+    }
 
-}
+}

src/main/java/Be9room/festime/converter/MessageConverter.java

@@ -0,0 +1,34 @@
+package Be9room.festime.converter;
+
+import Be9room.festime.domain.Message;
+import Be9room.festime.dto.MessageChatDto;
+import Be9room.festime.dto.MessageWebDto;
+import org.springframework.data.domain.Page;
+
+import java.util.List;
+import java.util.stream.Collectors;
+
+public class MessageConverter {
+    public static MessageWebDto.MessageResponseDto toMessageResponseDto(Message message){
+        return MessageWebDto.MessageResponseDto.builder()
+                .memberName(message.getMemberName())
+                .memberId(message.getMemberId())
+                .message(message.getMessage())
+                .createdAt(message.getCreatedAt())
+                .build();
+    }
+    public static MessageWebDto.MessageResponseDtoList toMessageResponseDtoList(Page<Message> messagePage){
+        List<MessageWebDto.MessageResponseDto> messageList = messagePage.stream()
+                .map(MessageConverter::toMessageResponseDto)
+                .toList();
+
+        return MessageWebDto.MessageResponseDtoList.builder()
+                .messageDtoList(messageList)
+                .isLast(messagePage.isLast())
+                .isFirst(messagePage.isFirst())
+                .totalPage(messagePage.getTotalPages())
+                .totalElements(messagePage.getTotalElements())
+                .listSize(messageList.size())
+                .build();
+    }
+}

src/main/java/Be9room/festime/domain/Message.java

@@ -0,0 +1,24 @@
+package Be9room.festime.domain;
+
+import lombok.AllArgsConstructor;
+import lombok.Builder;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+import org.springframework.data.annotation.Id;
+import org.springframework.data.mongodb.core.mapping.Document;
+
+import java.time.LocalDateTime;
+
+@Getter
+@Document(collection = "messages")
+@Builder
+@AllArgsConstructor
+@NoArgsConstructor
+public class Message {
+    @Id
+    private String id;
+    private String memberName;
+    private String memberId;
+    private String message;
+    private LocalDateTime createdAt;
+}

src/main/java/Be9room/festime/dto/MessageDto.java → src/main/java/Be9room/festime/dto/MessageChatDto.java

@@ -7,7 +7,7 @@
 @AllArgsConstructor
 @NoArgsConstructor
 @ToString
-public class MessageDto {
+public class MessageChatDto {
     private String memberName;
     private String memberId;
     private String messageType;

src/main/java/Be9room/festime/dto/MessageWebDto.java

@@ -0,0 +1,34 @@
+package Be9room.festime.dto;
+
+import lombok.AllArgsConstructor;
+import lombok.Builder;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+
+import java.time.LocalDateTime;
+import java.util.List;
+
+public class MessageWebDto {
+    @Builder
+    @NoArgsConstructor
+    @AllArgsConstructor
+    @Getter
+    public static class MessageResponseDtoList{
+        List<MessageResponseDto> messageDtoList;
+        Boolean isFirst;
+        Boolean isLast;
+        Long totalElements;
+        Integer listSize;
+        Integer totalPage;
+    }
+    @Builder
+    @NoArgsConstructor
+    @AllArgsConstructor
+    @Getter
+    public static class MessageResponseDto{
+        private String memberName;
+        private String memberId;
+        private String message;
+        private LocalDateTime createdAt;
+    }
+}

src/main/java/Be9room/festime/repository/MessageRepository.java

@@ -0,0 +1,12 @@
+package Be9room.festime.repository;
+
+import Be9room.festime.domain.Message;
+import org.springframework.data.domain.Page;
+import org.springframework.data.domain.PageRequest;
+import org.springframework.data.mongodb.repository.MongoRepository;
+
+import java.time.LocalDateTime;
+
+public interface MessageRepository extends MongoRepository<Message, String> {
+    Page<Message> findMessagesByCreatedAtAfterOrderByCreatedAtDesc(LocalDateTime time, PageRequest pageRequest);
+}

src/main/java/Be9room/festime/service/MessageService.java

@@ -0,0 +1,10 @@
+package Be9room.festime.service;
+
+import Be9room.festime.domain.Message;
+import Be9room.festime.dto.MessageChatDto;
+import org.springframework.data.domain.Page;
+
+public interface MessageService {
+    Message save(MessageChatDto messageChatDto);
+    Page<Message> getMessages(Integer page);
+}

src/main/java/Be9room/festime/service/MessageServiceImpl.java

@@ -0,0 +1,34 @@
+package Be9room.festime.service;
+
+import Be9room.festime.domain.Message;
+import Be9room.festime.dto.MessageChatDto;
+import Be9room.festime.repository.MessageRepository;
+import lombok.RequiredArgsConstructor;
+import org.springframework.data.domain.Page;
+import org.springframework.data.domain.PageRequest;
+import org.springframework.stereotype.Service;
+
+import java.time.LocalDateTime;
+
+@Service
+@RequiredArgsConstructor
+public class MessageServiceImpl implements MessageService {
+    private final MessageRepository messageRepository;
+
+    @Override
+    public Message save(MessageChatDto messageChatDto) {
+        Message message = Message.builder()
+                .memberId(messageChatDto.getMemberId())
+                .memberName(messageChatDto.getMemberName())
+                .message(messageChatDto.getMessage())
+                .createdAt(LocalDateTime.now())
+                .build();
+
+        return messageRepository.save(message);
+    }
+
+    @Override
+    public Page<Message> getMessages(Integer page) {
+        return messageRepository.findMessagesByCreatedAtAfterOrderByCreatedAtDesc(LocalDateTime.now().minusHours(3),PageRequest.of(page, 30));
+    }
+}

src/main/java/Be9room/festime/validation/annotation/CheckPage.java

@@ -0,0 +1,17 @@
+package Be9room.festime.validation.annotation;
+
+import Be9room.festime.validation.validator.CheckPageValidator;
+import jakarta.validation.Constraint;
+import jakarta.validation.Payload;
+
+import java.lang.annotation.*;
+
+@Documented
+@Constraint(validatedBy = CheckPageValidator.class)
+@Target({ElementType.PARAMETER})
+@Retention(RetentionPolicy.RUNTIME)
+public @interface CheckPage {
+    String message() default "페이지는 0 이상이여야 합니다.";
+    Class<?>[] groups() default {};
+    Class<? extends Payload>[] payload() default {};
+}

src/main/java/Be9room/festime/validation/validator/CheckPageValidator.java

@@ -0,0 +1,30 @@
+package Be9room.festime.validation.validator;
+
+import Be9room.festime.apiPayLoad.code.status.ErrorStatus;
+import Be9room.festime.validation.annotation.CheckPage;
+import jakarta.validation.ConstraintValidator;
+import jakarta.validation.ConstraintValidatorContext;
+import lombok.RequiredArgsConstructor;
+import org.springframework.stereotype.Component;
+
+@Component
+@RequiredArgsConstructor
+public class CheckPageValidator implements ConstraintValidator<CheckPage, Integer>{
+    @Override
+    public void initialize(CheckPage constraintAnnotation) {
+        ConstraintValidator.super.initialize(constraintAnnotation);
+    }
+
+    @Override
+    public boolean isValid(Integer value, ConstraintValidatorContext context) {
+        boolean isValid = true;
+        if(value < 0){
+            isValid = false;
+        }
+        if(!isValid){
+            context.disableDefaultConstraintViolation();
+            context.buildConstraintViolationWithTemplate(ErrorStatus._PAGE_ERROR.toString()).addConstraintViolation();
+        }
+        return isValid;
+    }
+}

src/main/resources/application.yml

@@ -1,7 +1,9 @@
 spring:
   application:
     name: festime_BE
-
+  data:
+    mongodb:
+      uri: ${MONGO_HOST}
 
 rabbit:
   host: ${RABBIT_HOST}