[이서현] 6주차 과제 - complete

6주차 Server S-Day 과제/LeeSeohyun/Book.java

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+package ServerStudy6Cloud.ServerStudy6Cloud.Domain;
+
+import jakarta.persistence.*;
+import lombok.Getter;
+import lombok.Setter;
+
+@Entity
+@Getter @Setter
+@Table(name= "book_info")
+public class Book {
+    @Id
+    @GeneratedValue
+    @Column(name="book_id")
+    private Long id;
+
+    private String name; //책 이름
+    private String reason; //해당 책을 좋아하는 이유
+}

6주차 Server S-Day 과제/LeeSeohyun/BookForm.java

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+package ServerStudy6Cloud.ServerStudy6Cloud.Controller;
+
+import lombok.Getter;
+import lombok.Setter;
+
+//BookForm: 폼에서 입력받은 내용과 entity에 넣을 내용 분리 위해 만든 클래스
+@Getter @Setter
+public class BookForm {
+    //책 이름, 책 좋아하는 이유
+    private String name;
+    private String reason;
+}

6주차 Server S-Day 과제/LeeSeohyun/RdsController.java

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+package ServerStudy6Cloud.ServerStudy6Cloud.Controller;
+
+import ServerStudy6Cloud.ServerStudy6Cloud.Domain.Book;
+import ServerStudy6Cloud.ServerStudy6Cloud.Service.RdsService;
+import lombok.RequiredArgsConstructor;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+import java.util.List;
+
+@RestController //API 만들기
+@RequiredArgsConstructor
+public class RdsController {
+    private final RdsService rdsService;
+    //AWS RDS에서 Book list를 가져오는 GetMapping
+
+    @GetMapping("/")
+    public ResponseEntity<List<Book>> readDB(){
+        List<Book> bookList = rdsService.findBooks();
+        return new ResponseEntity<>(bookList, HttpStatus.OK);
+    }
+
+    @PostMapping("/upload")
+    public ResponseEntity<Void> updateDB(BookForm form){
+        Book book = new Book();
+        book.setName(form.getName());
+        book.setReason(form.getReason());
+        rdsService.saveBook(book);
+        return new ResponseEntity<>(HttpStatus.CREATED);
+    }
+
+
+    //AWS RDS에 Book 객체를 저장하는 PostMapping
+}
+
+//@Controller에서 view에 리턴할 때의 컨트롤러 코드
+    /*@GetMapping("/")
+    public String readDB(Model model){
+        model.addAttribute("bookForm", new BookForm()); //BookForm 객체 넘기기
+        model.addAttribute("books", rdsService.findBooks());
+        return "index";
+    }
+    @PostMapping("/upload")
+    public String updateDB(BookForm form){
+        Book book = new Book();
+        book.setName(form.getName());
+        book.setReason(form.getReason());
+        rdsService.saveBook(book);
+        return "redirect:/";
+    }
+    */

6주차 Server S-Day 과제/LeeSeohyun/RdsRepository.java

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+package ServerStudy6Cloud.ServerStudy6Cloud.Repository;
+
+import ServerStudy6Cloud.ServerStudy6Cloud.Domain.Book;
+import jakarta.persistence.EntityManager;
+import lombok.RequiredArgsConstructor;
+import org.springframework.stereotype.Repository;
+
+import java.util.List;
+
+@Repository
+@RequiredArgsConstructor
+public class RdsRepository {
+    private final EntityManager em;
+    //DB에 새로운 책 저장하는 메서드
+    public void save(Book book){
+        em.persist(book);
+    }
+    //DB에서 모든 책 리스트 가져오는 메서드
+    public List<Book> findAll() {
+        return em.createQuery("select b from Book b", Book.class) //JPQL 쿼리와 조회할 class
+                .getResultList();
+    }
+}

6주차 Server S-Day 과제/LeeSeohyun/RdsService.java

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+package ServerStudy6Cloud.ServerStudy6Cloud.Service;
+
+import ServerStudy6Cloud.ServerStudy6Cloud.Domain.Book;
+import ServerStudy6Cloud.ServerStudy6Cloud.Repository.RdsRepository;
+import lombok.RequiredArgsConstructor;
+import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
+
+import java.util.List;
+
+@Service
+@Transactional
+@RequiredArgsConstructor
+public class RdsService {
+    //RdsRepository를 사용해 DB에 저장하는 로직
+    private final RdsRepository rdsRepository; //레포지토리 주입받음
+
+    @Transactional(readOnly=true) //조회에 최적화되게 Transaction 사용가능
+    public List<Book> findBooks() {
+        return rdsRepository.findAll();
+    }
+
+    public Long saveBook(Book book) {
+        rdsRepository.save(book);
+        return book.getId(); //값 저장되었는지 확인하는 용도
+    }
+}

6주차 Server S-Day 과제/LeeSeohyun/application.yml

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+# RDS
+spring:
+  datasource:
+    url: jdbc:mysql://gdsc-rds2.cf0i42aimwar.ap-northeast-2.rds.amazonaws.com:3306/study_6
+    username: admin
+    password: [password]
+    driver-class-name: com.mysql.cj.jdbc.Driver
+  # hibernate
+  jpa:
+    show-sql: true
+    hibernate:
+      ddl-auto: update
+      dialect: org.hibernate.dialect.MySQL8Dialect