RProducts - odczyt

PC35-RestSerwer/src/main/java/rest/PhotoUtil.java

+package rest;
+
+import java.io.File;
+import java.io.IOException;
+import java.io.InputStream;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.Paths;
+import java.nio.file.StandardCopyOption;
+import java.nio.file.StandardOpenOption;
+
+import sklep.db.DBException;
+import sklep.db.DBSettings;
+import sklep.db.RecordNotFound;
+
+public class PhotoUtil {
+    
+    private static final String EXT = ".jpg";
+
+    public static File getFile(int productId) throws DBException, RecordNotFound {
+        Path path = getPath(productId);
+        File file = path.toFile();
+        if(file.exists()) {
+            return file;
+        } else {
+            throw new RecordNotFound("Cannot read photo for product id = " + productId);
+        }
+    }
+
+    public static byte[] readBytes(int productId) throws DBException, RecordNotFound {
+        Path path = getPath(productId);
+        try {
+            return Files.readAllBytes(path);
+        } catch (IOException e) {
+        	// System.err.println(e);
+            throw new RecordNotFound("Cannot read photo for product id = " + productId);
+        }
+    }
+
+	public static void writeStream(int productId, InputStream inputStream) {
+		try {
+			Path path = getPath(productId);
+			Files.copy(inputStream, path, StandardCopyOption.REPLACE_EXISTING);
+		} catch (Exception e) {
+			// wypisujemy błąd, ale metoda kończy się normalnie
+			e.printStackTrace();
+		}
+	}
+
+	public static void writeBytes(int productId, byte[] bytes) {
+		try {
+			Path path = getPath(productId);
+			Files.write(path, bytes, StandardOpenOption.CREATE);
+		} catch (Exception e) {
+			// wypisujemy błąd, ale metoda kończy się normalnie
+			e.printStackTrace();
+		}
+	}
+	
+	private static Path getPath(int productId) throws DBException {
+		String dir = DBSettings.load().getProperty("photo_dir");
+		String fileName = productId + EXT;
+		return Paths.get(dir, fileName);
+	}
+
+}

PC35-RestSerwer/src/main/java/rest/RProducts.java

+package rest;
+
+import java.util.List;
+
+import jakarta.ws.rs.GET;
+import jakarta.ws.rs.Path;
+import jakarta.ws.rs.PathParam;
+import jakarta.ws.rs.Produces;
+import sklep.db.DBConnection;
+import sklep.db.DBException;
+import sklep.db.ProductDAO;
+import sklep.db.RecordNotFound;
+import sklep.model.Product;
+
+@Path("products")
+public class RProducts {
+	
+	@GET
+	@Produces("application/json")
+	public List<Product> readAll() throws DBException {
+		try(DBConnection db = DBConnection.open()) {
+			ProductDAO productDAO = db.productDAO();
+			return productDAO.readAll();
+		}
+	}
+
+	@GET
+	@Path("/{id}")
+	@Produces("application/json")
+	public Product readOne(@PathParam("id") int productId) throws DBException, RecordNotFound {
+		try(DBConnection db = DBConnection.open()) {
+			ProductDAO productDAO = db.productDAO();
+			return productDAO.findById(productId);
+		}
+	}
+	
+	@GET
+	@Path("/{id}/photo")
+	@Produces("image/jpeg")
+	public byte[] getPhoto(@PathParam("id") int productId) throws DBException, RecordNotFound {
+		return PhotoUtil.readBytes(productId);
+	}
+
+	
+}