Pierwszy odczyt bazy sklep za pomocą JDBC

PC25-SklepWeb/pom.xml

@@ -22,6 +22,12 @@
             <version>9.1.0</version>
             <scope>provided</scope>
         </dependency>
+        <dependency>
+            <groupId>org.postgresql</groupId>
+            <artifactId>postgresql</artifactId>
+            <version>42.6.0</version>
+            <scope>runtime</scope>
+        </dependency>
     </dependencies>
     
     <build>

PC25-SklepWeb/src/main/java/sklep/db/ZwyklyOdczyt.java

+package sklep.db;
+
+import java.sql.Connection;
+import java.sql.DriverManager;
+import java.sql.PreparedStatement;
+import java.sql.ResultSet;
+import java.sql.SQLException;
+
+public class ZwyklyOdczyt {
+
+	public static void main(String[] args) {
+		String url = "jdbc:postgresql://localhost:5432/sklep";
+		String sql = "SELECT * FROM products";
+		try(Connection c = DriverManager.getConnection(url, "kurs", "abc123");
+			PreparedStatement stmt= c.prepareStatement(sql);
+			ResultSet rs = stmt.executeQuery()) {
+			
+			while(rs.next()) {
+				System.out.printf("%d: %s za cenę %s\n",
+						rs.getInt("product_id"), rs.getString("product_name"), rs.getBigDecimal("price"));
+			}
+		} catch (SQLException e) {
+			e.printStackTrace();
+		}
+	}
+
+}