[8주차]Cow_mvc_practice(fuirian)

src/main/java/com/cow/cow_mvc_practice/comment/controller/CommentController.java

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+package com.cow.cow_mvc_practice.comment.controller;
+
+import com.cow.cow_mvc_practice.comment.controller.dto.request.CommentRequest;
+import com.cow.cow_mvc_practice.comment.controller.dto.request.UpdateCommentRequest;
+import com.cow.cow_mvc_practice.comment.entity.Comment;
+import com.cow.cow_mvc_practice.comment.service.CommentService;
+import com.cow.cow_mvc_practice.member.entity.Member;
+import lombok.RequiredArgsConstructor;
+import org.hibernate.annotations.Comments;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.PutMapping;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RestController;
+
+import java.security.cert.Extension;
+import java.util.List;
+
+@RequiredArgsConstructor
+@RestController
+public class CommentController {
+
+    private final CommentService commentService;
+
+    @PostMapping("/api/comments")
+    public ResponseEntity<Comment> Comment(@RequestBody CommentRequest request, Member member) {
+        Comment savedComment = commentService.save(request, member.getId());
+
+        return ResponseEntity.status(HttpStatus.CREATED)
+                    .body(savedComment);
+    }
+
+    @GetMapping("/api/comments/{commentId}")
+    public void findComment(@PathVariable long commentId) {
+        Comment comment = commentService.findComment(commentId);
+    }
+
+    @PutMapping("/api/comments/{commentId}")
+    public ResponseEntity<Comment> updateComment(@PathVariable long id, @RequestBody UpdateCommentRequest request) {
+        Comment updatedComment = commentService.update(id, request);
+
+        return ResponseEntity.ok()
+                .body(updatedComment);
+    }
+}

src/main/java/com/cow/cow_mvc_practice/comment/controller/dto/request/CommentRequest.java

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+package com.cow.cow_mvc_practice.comment.controller.dto.request;
+
+import java.sql.ConnectionBuilder;
+import java.util.List;
+import com.cow.cow_mvc_practice.comment.entity.Comment;
+import com.cow.cow_mvc_practice.member.controller.dto.response.MemberResponse;
+import com.cow.cow_mvc_practice.member.entity.Member;
+import lombok.Getter;
+
+@Getter
+public class CommentRequest {
+
+    private Member member;
+    private String title;
+    private String comment;
+
+
+    public Comment toEntity(Member member) {
+        return Comment.builder()
+                .member(member)
+                .title(title)
+                .comment(comment)
+                .build();
+    }
+}

src/main/java/com/cow/cow_mvc_practice/comment/controller/dto/request/UpdateCommentRequest.java

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+package com.cow.cow_mvc_practice.comment.controller.dto.request;
+
+import lombok.AllArgsConstructor;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+
+@AllArgsConstructor
+@NoArgsConstructor
+@Getter
+public class UpdateCommentRequest {
+    private String title;
+    private String comment;
+}

src/main/java/com/cow/cow_mvc_practice/comment/controller/dto/response/CommentDto.java

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+package com.cow.cow_mvc_practice.comment.controller.dto.response;
+
+import com.cow.cow_mvc_practice.comment.entity.Comment;
+import lombok.Builder;
+import lombok.Getter;
+
+@Getter
+public class CommentDto {
+    private final Long commentId;
+    private final String title;
+    private final String comment;
+
+    @Builder
+    private CommentDto(Long commentId, String title, String comment) {
+        this.commentId = commentId;
+        this.title = title;
+        this.comment = comment;
+    }
+
+    public static CommentDto of(Comment comment) {
+        return CommentDto.builder()
+                .commentId(comment.getId())
+                .title(comment.getTitle())
+                .comment(comment.getComment())
+                .build();
+    }
+}

src/main/java/com/cow/cow_mvc_practice/comment/controller/dto/response/CommentResponse.java

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+package com.cow.cow_mvc_practice.comment.controller.dto.response;
+
+import com.cow.cow_mvc_practice.comment.entity.Comment;
+import lombok.Builder;
+
+import java.util.List;
+
+@Builder
+public class CommentResponse {
+    private final String title;
+    private final String comment;
+
+    @Builder
+    public CommentResponse(String title, String comment) {
+        this.title = title;
+        this.comment = comment;
+    }
+
+    public static CommentResponse from(Comment comment) {
+        return CommentResponse.builder()
+                .title(comment.getTitle())
+                .comment(comment.getComment())
+                .build();
+    }
+}

src/main/java/com/cow/cow_mvc_practice/comment/entity/Comment.java

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+package com.cow.cow_mvc_practice.comment.entity;
+
+import com.cow.cow_mvc_practice.member.entity.Member;
+import jakarta.persistence.CascadeType;
+import jakarta.persistence.Column;
+import jakarta.persistence.Entity;
+import jakarta.persistence.FetchType;
+import jakarta.persistence.GeneratedValue;
+import jakarta.persistence.GenerationType;
+import jakarta.persistence.Id;
+import jakarta.persistence.JoinColumn;
+import jakarta.persistence.ManyToOne;
+import jakarta.persistence.OneToMany;
+import lombok.AccessLevel;
+import lombok.Builder;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+@Entity
+@Getter
+@NoArgsConstructor(access = AccessLevel.PROTECTED)
+public class Comment {
+
+        @Id
+        @GeneratedValue(strategy = GenerationType.IDENTITY)
+        @Column(name = "comment_id")
+        private Long id;
+
+        @ManyToOne(fetch = FetchType.LAZY)
+        @JoinColumn(name = "member_id")
+        private Member member;
+
+        private String title;
+        private String comment;
+
+        @Builder
+        private Comment(Member member, String title, String comment) {
+            this.member = member;
+            this.title = title;
+            this.comment = comment;
+        }
+
+        public void update(String title, String comment) {
+            this.title = title;
+            this.comment = comment;
+        }
+}

src/main/java/com/cow/cow_mvc_practice/comment/repository/CommentRepository.java

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+package com.cow.cow_mvc_practice.comment.repository;
+
+import com.cow.cow_mvc_practice.comment.entity.Comment;
+import org.springframework.data.jpa.repository.JpaRepository;
+
+import java.util.Optional;
+
+public interface CommentRepository extends JpaRepository<Comment, Long> {
+
+    @Override
+    Optional<Comment> findById(Long commentId);
+}

src/main/java/com/cow/cow_mvc_practice/comment/service/CommentService.java

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+package com.cow.cow_mvc_practice.comment.service;
+
+import com.cow.cow_mvc_practice.comment.controller.dto.request.CommentRequest;
+import com.cow.cow_mvc_practice.comment.controller.dto.request.UpdateCommentRequest;
+import com.cow.cow_mvc_practice.comment.entity.Comment;
+import com.cow.cow_mvc_practice.comment.repository.CommentRepository;
+import com.cow.cow_mvc_practice.member.service.MemberService;
+import jakarta.persistence.EntityNotFoundException;
+import jakarta.transaction.Transactional;
+import lombok.RequiredArgsConstructor;
+import org.springframework.stereotype.Service;
+
+@RequiredArgsConstructor
+@Service
+@Transactional
+public class CommentService {
+
+    private final CommentRepository commentRepository;
+    private final MemberService memberService;
+
+    public Comment save(CommentRequest commentRequest, Long memberId) {
+        Comment comment = CommentRequest.toEntity(memberService.findOne(memberId));
+        return commentRepository.save(comment);
+    }
+
+    public Comment findComment(long id) {
+        return commentRepository.findById(id)
+                .orElseThrow(() -> new EntityNotFoundException("not found : " + id));
+    }
+
+    @Transactional
+    public Comment update(long id, UpdateCommentRequest request) {
+        Comment comment = commentRepository.findById(id)
+                .orElseThrow(() -> new IllegalArgumentException("not found : " + id));
+
+        comment.update(request.getTitle(), request.getComment());
+
+        return comment;
+    }
+}