Adres controllera na poziomie klasy

PC30-SklepSpring/src/main/java/sklep/alternatywne_wersje_bazy_danych/ProductController_v2.java

+package sklep.alternatywne_wersje_bazy_danych;
+
+import java.sql.Connection;
+import java.sql.PreparedStatement;
+import java.sql.ResultSet;
+import java.sql.SQLException;
+
+import javax.sql.DataSource;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Controller;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestParam;
+import org.springframework.web.bind.annotation.ResponseBody;
+
+@Controller
+@RequestMapping(path="/alt2", produces="text/plain")
+public class ProductController_v2 {
+	@Autowired
+	private DataSource dataSource;
+	
+	@GetMapping
+	@ResponseBody
+	public String wszystkieProdukty() {
+		StringBuilder sb = new StringBuilder();
+		
+		final String sql = "SELECT * FROM products ORDER BY product_id";
+		try(Connection c = dataSource.getConnection();
+			PreparedStatement stmt = c.prepareStatement(sql);
+			ResultSet rs = stmt.executeQuery()) {
+			
+			while(rs.next()) {
+				sb.append("* produkt ")
+					.append(rs.getString("product_name"))
+					.append(" za cenę ")
+					.append(rs.getBigDecimal("price"))
+					.append('\n');
+			}
+		} catch (SQLException e) {
+			e.printStackTrace();
+			sb.append("Błąd: " + e);
+		}
+		return sb.toString();
+	}
+
+	@GetMapping("/{id}")
+	@ResponseBody
+	public String jedenProdukt(@PathVariable int id) {
+		StringBuilder sb = new StringBuilder();
+		
+		final String sql = "SELECT * FROM products WHERE product_id = ?";
+		try(Connection c = dataSource.getConnection();
+			PreparedStatement stmt = c.prepareStatement(sql)) {
+			stmt.setInt(1, id);
+			try(ResultSet rs = stmt.executeQuery()) {
+				if(rs.next()) {
+					sb.append("Znaleziony produkt:\n")
+						.append(rs.getString("product_name"))
+						.append(" za cenę ")
+						.append(rs.getBigDecimal("price"))
+						.append('\n');
+				} else {
+					sb.append("Nie ma produktu o numerze ").append(id);
+				}
+			}
+		} catch (SQLException e) {
+			e.printStackTrace();
+			sb.append("Błąd: " + e);
+		}
+		return sb.toString();
+	}
+	
+	@GetMapping("/szukaj")
+	@ResponseBody
+	public String wyszukajProdukty(@RequestParam String name) {
+		StringBuilder sb = new StringBuilder();
+		
+		final String sql = "SELECT * FROM products WHERE product_name = ? ORDER BY product_id";
+		try(Connection c = dataSource.getConnection();
+			PreparedStatement stmt = c.prepareStatement(sql)) {
+			
+			stmt.setString(1, name);
+		
+			try(ResultSet rs = stmt.executeQuery()) {
+				while(rs.next()) {
+					sb.append("* produkt ")
+						.append(rs.getString("product_name"))
+						.append(" za cenę ")
+						.append(rs.getBigDecimal("price"))
+						.append('\n');
+				}
+			}
+		} catch (SQLException e) {
+			e.printStackTrace();
+			sb.append("Błąd: " + e);
+		}
+		return sb.toString();
+	}
+}

PC30-SklepSpring/src/main/java/sklep/controller/ProductController.java

 package sklep.controller;
 
 import java.sql.Connection;
-import java.sql.DriverManager;
 import java.sql.PreparedStatement;
 import java.sql.ResultSet;
 import java.sql.SQLException;
-import java.sql.Statement;
 
 import javax.sql.DataSource;
 
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Controller;
+import org.springframework.web.bind.annotation.GetMapping;
 import org.springframework.web.bind.annotation.PathVariable;
 import org.springframework.web.bind.annotation.RequestMapping;
 import org.springframework.web.bind.annotation.RequestParam;
 import org.springframework.web.bind.annotation.ResponseBody;
 
 @Controller
+@RequestMapping(path="/products", produces="text/plain")
 public class ProductController {
 	@Autowired
 	private DataSource dataSource;
 	
-	@RequestMapping(path="/products", produces="text/plain")
+	@GetMapping
 	@ResponseBody
 	public String wszystkieProdukty() {
 		StringBuilder sb = new StringBuilder();
@@ -45,7 +45,7 @@ public class ProductController {
 		return sb.toString();
 	}
 
-	@RequestMapping(path="/products/{id}", produces="text/plain")
+	@GetMapping("/{id}")
 	@ResponseBody
 	public String jedenProdukt(@PathVariable int id) {
 		StringBuilder sb = new StringBuilder();
@@ -72,7 +72,7 @@ public class ProductController {
 		return sb.toString();
 	}
 	
-	@RequestMapping(path="/products/szukaj", produces="text/plain")
+	@GetMapping("/szukaj")
 	@ResponseBody
 	public String wyszukajProdukty(@RequestParam String name) {
 		StringBuilder sb = new StringBuilder();