[Week04] 게시판 CRUD, 권한 처리

.gitignore

@@ -35,3 +35,10 @@ out/
 
 ### VS Code ###
 .vscode/
+
+# 데이터베이스 데이터 폴더 제외
+/mysql_data/
+
+# OS 관련 임시 파일
+.DS_Store
+Thumbs.db

build.gradle

@@ -1,6 +1,6 @@
 plugins {
     id 'java'
-    id 'org.springframework.boot' version '4.0.3'
+    id 'org.springframework.boot' version '3.5.11'
     id 'io.spring.dependency-management' version '1.1.7'
 }
 
@@ -26,13 +26,20 @@ repositories {
 
 dependencies {
     implementation 'org.springframework.boot:spring-boot-starter-data-jpa'
-    implementation 'org.springframework.boot:spring-boot-starter-webmvc'
+    implementation 'org.springframework.boot:spring-boot-starter-web'
+    implementation 'org.springframework.boot:spring-boot-starter-validation'
     compileOnly 'org.projectlombok:lombok'
     runtimeOnly 'com.mysql:mysql-connector-j'
     annotationProcessor 'org.projectlombok:lombok'
-    testImplementation 'org.springframework.boot:spring-boot-starter-data-jpa-test'
-    testImplementation 'org.springframework.boot:spring-boot-starter-webmvc-test'
+    testImplementation 'org.springframework.boot:spring-boot-starter-test'
     testRuntimeOnly 'org.junit.platform:junit-platform-launcher'
+    testRuntimeOnly 'org.junit.platform:junit-platform-launcher'
+
+    // Swagger
+    implementation 'org.springdoc:springdoc-openapi-starter-webmvc-ui:2.8.13'
+    implementation 'org.springdoc:springdoc-openapi-starter-webmvc-api:2.8.13'
+    // Validation
+    implementation 'org.springframework.boot:spring-boot-starter-validation'
 }
 
 tasks.named('test') {

docker-compose.yml

@@ -0,0 +1,12 @@
+version: '3.8'
+services:
+  db:
+    image: mysql:8.0
+    container_name: spring-study-db
+    ports:
+      - "3307:3306"
+    environment:
+      MYSQL_ROOT_PASSWORD: tngus3872
+      MYSQL_DATABASE: spring-1team
+    volumes:
+      - ./mysql_data:/var/lib/mysql

src/main/java/com/study/spring1team/Spring1teamApplication.java

@@ -2,7 +2,9 @@
 
 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.data.jpa.repository.config.EnableJpaAuditing;
 
+@EnableJpaAuditing
 @SpringBootApplication
 public class Spring1teamApplication {
 

src/main/java/com/study/spring1team/domain/comment/controller/CommentController.java

@@ -0,0 +1,31 @@
+package com.study.spring1team.domain.comment.controller;
+
+import com.study.spring1team.domain.comment.dto.CommentRequestDTO;
+import com.study.spring1team.domain.comment.service.CommentService;
+import com.study.spring1team.global.apiPayload.ApiResponse;
+import com.study.spring1team.global.apiPayload.code.GeneralSuccessCode;
+import jakarta.validation.Valid;
+import lombok.RequiredArgsConstructor;
+import org.springframework.web.bind.annotation.*;
+
+@RestController
+@RequiredArgsConstructor
+public class CommentController {
+
+    private final CommentService commentService;
+
+    @PostMapping("/posts/{postId}/comments")
+    public ApiResponse<String> createComment(
+            @PathVariable Long postId,
+            @Valid @RequestBody CommentRequestDTO request
+    ) {
+        commentService.createComment(postId, request);
+        return ApiResponse.onSuccess(GeneralSuccessCode.OK, "댓글이 성공적으로 작성되었습니다.");
+    }
+
+    @DeleteMapping("/comments/{commentId}")
+    public ApiResponse<String> deleteComment(@PathVariable Long commentId) {
+        commentService.deleteComment(commentId);
+        return ApiResponse.onSuccess(GeneralSuccessCode.OK, "댓글이 성공적으로 삭제되었습니다.");
+    }
+}

src/main/java/com/study/spring1team/domain/comment/dto/CommentRequestDTO.java

@@ -0,0 +1,11 @@
+package com.study.spring1team.domain.comment.dto;
+
+import jakarta.validation.constraints.NotBlank;
+import lombok.Getter;
+
+@Getter
+public class CommentRequestDTO {
+
+    @NotBlank(message = "댓글을 입력해주세요.")
+    private String content;
+}

src/main/java/com/study/spring1team/domain/comment/entity/Comment.java

@@ -0,0 +1,30 @@
+package com.study.spring1team.domain.comment.entity;
+
+import com.study.spring1team.domain.post.entity.Post;
+import com.study.spring1team.domain.user.entity.User;
+import com.study.spring1team.global.entity.BaseEntity;
+import jakarta.persistence.*;
+import lombok.*;
+
+@Entity
+@Getter
+@Builder
+@NoArgsConstructor(access = AccessLevel.PROTECTED)
+@AllArgsConstructor
+public class Comment extends BaseEntity {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    private Long id;
+
+    @Column(nullable = false, columnDefinition = "TEXT")
+    private String content;
+
+    @ManyToOne(fetch = FetchType.LAZY)
+    @JoinColumn(name = "user_id")
+    private User author;
+
+    @ManyToOne(fetch = FetchType.LAZY)
+    @JoinColumn(name = "post_id")
+    private Post post;
+}

src/main/java/com/study/spring1team/domain/comment/repository/CommentRepository.java

@@ -0,0 +1,7 @@
+package com.study.spring1team.domain.comment.repository;
+
+import com.study.spring1team.domain.comment.entity.Comment;
+import org.springframework.data.jpa.repository.JpaRepository;
+
+public interface CommentRepository extends JpaRepository<Comment, Long> {
+}

src/main/java/com/study/spring1team/domain/comment/service/CommentService.java

@@ -0,0 +1,48 @@
+package com.study.spring1team.domain.comment.service;
+
+import com.study.spring1team.domain.comment.dto.CommentRequestDTO;
+import com.study.spring1team.domain.comment.entity.Comment;
+import com.study.spring1team.domain.comment.repository.CommentRepository;
+import com.study.spring1team.domain.post.entity.Post;
+import com.study.spring1team.domain.post.repository.PostRepository;
+import com.study.spring1team.domain.user.entity.User;
+import com.study.spring1team.domain.user.repository.UserRepository;
+import lombok.RequiredArgsConstructor;
+import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
+
+@Service
+@Transactional
+@RequiredArgsConstructor
+public class CommentService {
+
+    private final CommentRepository commentRepository;
+    private final PostRepository postRepository;
+    private final UserRepository userRepository;
+
+    // 유저 고정값 설정
+    private static final Long DEFAULT_USER_ID = 1L;
+
+    public Long createComment(Long postId, CommentRequestDTO request) {
+        Post post = postRepository.findById(postId)
+                .orElseThrow(() -> new IllegalArgumentException("해당 게시글이 없습니다."));
+
+        User user = userRepository.findById(DEFAULT_USER_ID)
+                .orElseThrow(() -> new IllegalArgumentException("해당 사용자가 없습니다."));
+
+        Comment comment = Comment.builder()
+                .content(request.getContent())
+                .author(user)
+                .post(post)
+                .build();
+
+        return commentRepository.save(comment).getId();
+    }
+
+    public void deleteComment(Long commentId) {
+        Comment comment = commentRepository.findById(commentId)
+                .orElseThrow(() -> new IllegalArgumentException("해당 댓글이 없습니다."));
+
+        commentRepository.delete(comment);
+    }
+}

src/main/java/com/study/spring1team/controller/PingController.java → src/main/java/com/study/spring1team/domain/ping/controller/PingController.java

@@ -1,5 +1,7 @@
-package com.study.spring1team.controller;
+package com.study.spring1team.domain.ping.controller;
 
+import com.study.spring1team.global.apiPayload.ApiResponse;
+import com.study.spring1team.global.apiPayload.code.GeneralSuccessCode;
 import org.springframework.web.bind.annotation.GetMapping;
 import org.springframework.web.bind.annotation.RequestMapping;
 import org.springframework.web.bind.annotation.RestController;
@@ -9,7 +11,7 @@
 public class PingController {
 
     @GetMapping("/ping")
-    public String ping() {
-        return "pong";
+    public ApiResponse ping() {
+        return ApiResponse.onSuccess(GeneralSuccessCode.OK,"pong");
     }
 }

src/main/java/com/study/spring1team/domain/post/controller/PostController.java

@@ -0,0 +1,50 @@
+package com.study.spring1team.domain.post.controller;
+
+import com.study.spring1team.domain.post.entity.Post;
+import com.study.spring1team.domain.post.service.PostService;
+import com.study.spring1team.global.apiPayload.ApiResponse;
+import com.study.spring1team.domain.post.dto.PostRequestDTO;
+import com.study.spring1team.global.apiPayload.code.GeneralSuccessCode;
+import jakarta.validation.Valid;
+import lombok.RequiredArgsConstructor;
+import org.springframework.web.bind.annotation.*;
+
+import java.util.List;
+
+@RestController
+@RequestMapping("/posts")
+@RequiredArgsConstructor
+public class PostController {
+    private final PostService postService;
+
+    @PostMapping()
+    public ApiResponse<String> createPost(@Valid @RequestBody PostRequestDTO request) {
+        postService.createPost(request);
+        return ApiResponse.onSuccess(GeneralSuccessCode.OK, "게시글이 성공적으로 생성되었습니다.");
+    }
+
+    @GetMapping
+    public List<Post> getPosts() {
+        return postService.getPostList();
+    }
+
+    @GetMapping("/{postId}")
+    public ApiResponse<Post> getPost(@PathVariable Long postId) {
+        return ApiResponse.onSuccess(GeneralSuccessCode.OK, postService.getPost(postId));
+    }
+
+    @PutMapping("/{postId}")
+    public ApiResponse<String> updatePost(
+            @PathVariable Long postId,
+            @Valid @RequestBody PostRequestDTO request
+    ) {
+        postService.updatePost(postId, request);
+        return ApiResponse.onSuccess(GeneralSuccessCode.OK, "게시글이 성공적으로 수정되었습니다.");
+    }
+
+    @DeleteMapping("/{postId}")
+    public ApiResponse<String> deletePost(@PathVariable Long postId) {
+        postService.deletePost(postId);
+        return ApiResponse.onSuccess(GeneralSuccessCode.OK, "게시글이 성공적으로 삭제되었습니다.");
+    }
+}

src/main/java/com/study/spring1team/domain/post/dto/PostRequestDTO.java

@@ -0,0 +1,18 @@
+package com.study.spring1team.domain.post.dto;
+
+import jakarta.validation.constraints.NotBlank;
+import jakarta.validation.constraints.Size;
+import lombok.Getter;
+
+@Getter
+public class PostRequestDTO {
+
+    @NotBlank(message = "제목은 필수 입력 항목입니다.")
+    @Size(min = 1, max = 50, message = "제목은 1자 이상 50자 이하로 입력해주세요.")
+    private String title;
+
+    @NotBlank(message = "내용은 필수 입력 항목입니다.")
+    private String content;
+
+    private Long categoryId;
+}

src/main/java/com/study/spring1team/domain/post/dto/PostResponseDTO.java

@@ -0,0 +1,4 @@
+package com.study.spring1team.domain.post.dto;
+
+public class PostResponseDTO {
+}

src/main/java/com/study/spring1team/domain/post/entity/Category.java

@@ -0,0 +1,26 @@
+package com.study.spring1team.domain.post.entity;
+
+import com.study.spring1team.global.entity.BaseEntity;
+import jakarta.persistence.*;
+import lombok.*;
+
+import java.util.ArrayList;
+import java.util.List;
+
+@Entity
+@Getter
+@Builder
+@NoArgsConstructor(access = AccessLevel.PROTECTED)
+@AllArgsConstructor
+public class Category extends BaseEntity {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    private Long id;
+
+    @Column(nullable = false, length = 20)
+    private String name;
+
+    @OneToMany(mappedBy = "category", cascade = CascadeType.ALL)
+    private List<Post> postList = new ArrayList<>();
+}

src/main/java/com/study/spring1team/domain/post/entity/Post.java

@@ -0,0 +1,41 @@
+package com.study.spring1team.domain.post.entity;
+
+import com.study.spring1team.domain.comment.entity.Comment;
+import com.study.spring1team.domain.user.entity.User;
+import com.study.spring1team.global.entity.BaseEntity;
+import jakarta.persistence.*;
+import lombok.*;
+
+import java.util.ArrayList;
+import java.util.List;
+
+@Entity
+@Getter
+@Builder
+@NoArgsConstructor(access = AccessLevel.PROTECTED)
+@AllArgsConstructor
+public class Post extends BaseEntity {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    private Long id;
+
+    @Setter
+    @Column(nullable = false, length = 50)
+    private String title;
+
+    @Setter
+    @Column(columnDefinition = "TEXT", nullable = false)
+    private String content;
+
+    @ManyToOne(fetch = FetchType.LAZY)
+    @JoinColumn(name = "user_id")
+    private User author; // 작성자 매핑
+
+    @ManyToOne(fetch = FetchType.LAZY)
+    @JoinColumn(name = "category_id")
+    private Category category; // 카테고리 매핑
+
+    @OneToMany(mappedBy = "post", cascade = CascadeType.ALL, orphanRemoval = true)
+    private List<Comment> commentList = new ArrayList<>();
+}

src/main/java/com/study/spring1team/domain/post/repository/PostRepository.java

@@ -0,0 +1,7 @@
+package com.study.spring1team.domain.post.repository;
+
+import com.study.spring1team.domain.post.entity.Post;
+import org.springframework.data.jpa.repository.JpaRepository;
+
+public interface PostRepository extends JpaRepository<Post, Long> {
+}