전남대 BE_안원모 1주차 과제(3단계)

README.md

@@ -1 +1,32 @@
-# spring-gift-product
+# spring-gift-product
+## 제품 정보를 관리하는 간단한 애플리케이션
+H2 데이터베이스를 사용하여 제품 정보를 저장하며, RESTful API를 통해 제품 데이터를 관리할 수 있습니다.
+
+### 기능 
+- 제품에 대한 CRUD 작업 (생성, 조회, 수정, 삭제)
+- H2 데이터베이스 초기화 및 샘플 데이터 삽입
+- 제품 관리를 위한 RESTful API 제공
+- H2 데이터베이스 콘솔을 통한 데이터베이스 관리
+
+### REST API 사용법
+Postman 또는 브라우저를 사용하여 다음 REST API 엔드포인트를 테스트할 수 있습니다:
+
+- 모든 제품 조회: GET /products
+- 특정 제품 조회: GET /products/{id}
+- 제품 생성: POST /products
+Body (JSON):
+
+{
+"name": "New Product",
+"price": 15.99,
+"description": "Description for new product"
+}
+
+제품 수정: PUT /products/{id}
+Body (JSON):
+{
+"name": "Updated Product",
+"price": 18.99,
+"description": "Updated description"
+}
+제품 삭제: DELETE /products/{id}

build.gradle

@@ -9,7 +9,7 @@ version = '0.0.1-SNAPSHOT'
 
 java {
     toolchain {
-        languageVersion = JavaLanguageVersion.of(21)
+        languageVersion = JavaLanguageVersion.of(17)
     }
 }
 

src/main/java/gift/Product.java

@@ -0,0 +1,43 @@
+package gift;
+
+import java.math.BigDecimal;
+
+public class Product {
+    private Long id;
+    private String name;
+    private BigDecimal price;
+    private String description;
+
+    // Getters and Setters
+    public Long getId() {
+        return id;
+    }
+
+    public void setId(Long id) {
+        this.id = id;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public BigDecimal getPrice() {
+        return price;
+    }
+
+    public void setPrice(BigDecimal price) {
+        this.price = price;
+    }
+
+    public String getDescription() {
+        return description;
+    }
+
+    public void setDescription(String description) {
+        this.description = description;
+    }
+}

src/main/java/gift/ProductController.java

@@ -0,0 +1,42 @@
+package gift;
+
+import org.springframework.web.bind.annotation.*;
+
+import java.util.List;
+
+@RestController
+@RequestMapping("/products")
+public class ProductController {
+
+    private final ProductService productService;
+
+    public ProductController(ProductService productService) {
+        this.productService = productService;
+    }
+
+    @GetMapping
+    public List<Product> getAllProducts() {
+        return productService.getAllProducts();
+    }
+
+    @GetMapping("/{id}")
+    public Product getProductById(@PathVariable Long id) {
+        return productService.getProductById(id);
+    }
+
+    @PostMapping
+    public void createProduct(@RequestBody Product product) {
+        productService.saveProduct(product);
+    }
+
+    @PutMapping("/{id}")
+    public void updateProduct(@PathVariable Long id, @RequestBody Product product) {
+        product.setId(id);
+        productService.updateProduct(product);
+    }
+
+    @DeleteMapping("/{id}")
+    public void deleteProduct(@PathVariable Long id) {
+        productService.deleteProduct(id);
+    }
+}

src/main/java/gift/ProductRepository.java

@@ -0,0 +1,72 @@
+package gift;
+import org.springframework.jdbc.core.ResultSetExtractor;
+import org.springframework.dao.DataAccessException;
+import org.springframework.jdbc.core.JdbcTemplate;
+import org.springframework.jdbc.core.RowMapper;
+import org.springframework.stereotype.Repository;
+import java.sql.ResultSet;
+import java.sql.SQLException;
+import java.util.List;
+
+@Repository
+public class ProductRepository {
+
+    private final JdbcTemplate jdbcTemplate;
+
+    public ProductRepository(JdbcTemplate jdbcTemplate) {
+        this.jdbcTemplate = jdbcTemplate;
+    }
+
+    private static final class ProductRowMapper implements RowMapper<Product> {
+
+        @Override
+        public Product mapRow(ResultSet rs, int rowNum) throws SQLException {
+            Product product = new Product();
+            product.setId(rs.getLong("id"));
+            product.setName(rs.getString("name"));
+            product.setPrice(rs.getBigDecimal("price"));
+            product.setDescription(rs.getString("description"));
+            return product;
+        }
+    }
+
+    public List<Product> findAll() {
+        return jdbcTemplate.query("SELECT * FROM product", new ProductRowMapper());
+    }
+
+    public Product findById(Long id) {
+        return jdbcTemplate.query(
+            "SELECT * FROM product WHERE id = ?",
+            new Object[]{id},
+            new ResultSetExtractor<Product>() {
+                @Override
+                public Product extractData(ResultSet rs) throws SQLException, DataAccessException {
+                    if (rs.next()) {
+                        Product product = new Product();
+                        product.setId(rs.getLong("id"));
+                        product.setName(rs.getString("name"));
+                        product.setPrice(rs.getBigDecimal("price"));
+                        product.setDescription(rs.getString("description"));
+                        return product;
+                    }
+                    return null; // or throw an exception if the product is not found
+                }
+            }
+        );
+    }
+
+    public void save(Product product) {
+        jdbcTemplate.update("INSERT INTO product (name, price, description) VALUES (?, ?, ?)",
+            product.getName(), product.getPrice(), product.getDescription());
+    }
+
+    public void update(Product product) {
+        jdbcTemplate.update("UPDATE product SET name = ?, price = ?, description = ? WHERE id = ?",
+            product.getName(), product.getPrice(), product.getDescription(), product.getId());
+    }
+
+    public void deleteById(Long id) {
+        jdbcTemplate.update("DELETE FROM product WHERE id = ?", id);
+    }
+
+}

src/main/java/gift/ProductService.java

@@ -0,0 +1,35 @@
+package gift;
+
+import java.util.List;
+import org.springframework.stereotype.Service;
+
+@Service
+public class ProductService {
+
+    private final ProductRepository productRepository;
+
+    public ProductService(ProductRepository productRepository) {
+        this.productRepository = productRepository;
+    }
+
+    public List<Product> getAllProducts() {
+        return productRepository.findAll();
+    }
+
+    public Product getProductById(Long id) {
+        return productRepository.findById(id);
+    }
+
+    public void saveProduct(Product product) {
+        productRepository.save(product);
+    }
+
+    public void updateProduct(Product product) {
+        productRepository.update(product);
+    }
+
+    public void deleteProduct(Long id) {
+        productRepository.deleteById(id);
+    }
+
+}

src/main/resources/application.properties

@@ -1 +1,11 @@
 spring.application.name=spring-gift
+# H2 Database configuration
+spring.datasource.url=jdbc:h2:mem:testdb
+spring.datasource.driverClassName=org.h2.Driver
+spring.datasource.username=sa
+spring.datasource.password=password
+
+# Initialize the database with schema.sql and data.sql
+spring.sql.init.mode=always
+spring.sql.init.schema-locations=classpath:schema.sql
+spring.sql.init.data-locations=classpath:data.sql

src/main/resources/data.sql

@@ -0,0 +1,2 @@
+INSERT INTO product (name, price, description) VALUES ('Product1', 10.00, 'Description for Product1');
+INSERT INTO product (name, price, description) VALUES ('Product2', 20.00, 'Description for Product2');

src/main/resources/schema.sql

@@ -0,0 +1,6 @@
+CREATE TABLE IF NOT EXISTS product (
+    id BIGINT AUTO_INCREMENT PRIMARY KEY,
+    name VARCHAR(255) NOT NULL,
+    price DECIMAL(10, 2) NOT NULL,
+    description VARCHAR(255)
+);