[ADD] Генерация QR-кода

Author: gevorg95

pom.xml

@@ -81,6 +81,14 @@
                 </execution>
             </executions>
         </plugin>
+        <plugin>
+            <groupId>org.apache.maven.plugins</groupId>
+            <artifactId>maven-compiler-plugin</artifactId>
+            <configuration>
+                <source>7</source>
+                <target>7</target>
+            </configuration>
+        </plugin>
     </plugins>
     </build>
 </project>

src/main/java/isc/barcode.java

@@ -1,17 +1,32 @@
 package isc;
 
-import java.io.FileInputStream;
-import java.io.IOException;
+import java.io.*;
+import java.nio.file.FileSystems;
+import java.nio.file.Files;
+import java.nio.file.Path;
 import java.util.EnumMap;
 import java.util.EnumSet;
 import java.util.Map;
 import javax.imageio.ImageIO;
+
 import com.google.zxing.*;
 import com.google.zxing.client.j2se.BufferedImageLuminanceSource;
+import com.google.zxing.client.j2se.MatrixToImageWriter;
 import com.google.zxing.common.HybridBinarizer;
 import com.google.zxing.multi.GenericMultipleBarcodeReader;
 
+import java.awt.Color;
+import java.awt.Graphics2D;
+import java.awt.image.BufferedImage;
+import java.io.IOException;
+import java.util.Hashtable;
 
+import com.google.zxing.BarcodeFormat;
+import com.google.zxing.EncodeHintType;
+import com.google.zxing.WriterException;
+import com.google.zxing.common.BitMatrix;
+import com.google.zxing.qrcode.QRCodeWriter;
+import com.google.zxing.qrcode.decoder.ErrorCorrectionLevel;
 import static com.google.zxing.common.CharacterSetECI.UTF8;
 
 public class barcode {
@@ -26,20 +41,77 @@ public barcode() {
     }
 
     // Function to read the file with Barcode
-    public String[] readBarCode(String path) throws IOException {
+    public String[] readBarCode(String path) throws IOException
+    {
         BinaryBitmap binaryBitmap = new BinaryBitmap(new HybridBinarizer(new BufferedImageLuminanceSource(ImageIO.read(new FileInputStream(path)))));
         String[] resultsText = new String[0];
         try {
             Result[] results = reader.decodeMultiple(binaryBitmap, hintsMap);
             resultsText = new String[results.length];
             for (int i = 0; i < results.length; i++) {
+                System.out.println(results[i].getText());
                 resultsText[i] = results[i].getText();
             }
-        } catch (NotFoundException ex) {
+        } catch (NotFoundException ex)
+        {
         }
 
         return resultsText;
     }
 
+//    public static void main(String[] args) throws WriterException, IOException {
+//        String qrCodeText = "Hi";
+//        String filePath = "Test.png";
+//        int size = 25;
+//        String fileType = "png";
+//
+//        boolean sc = createQRImage(filePath, qrCodeText, size, fileType);
+//        barcode barcode = new barcode();
+//
+//        generateQRCode("Hi",25,25,"new.png");
+//        System.out.println(barcode.readBarCode("new.png").length);
+//        System.out.println("Ура: "+ sc);
+//    }
+
+    public boolean createQRImage(String filePath,String qrCodeText, int size, String fileType) throws WriterException, IOException {
+        // Create the ByteMatrix for the QR-Code that encodes the given String
+        Hashtable<EncodeHintType, ErrorCorrectionLevel> hintMap = new Hashtable<>();
+        hintMap.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.L);
+        QRCodeWriter qrCodeWriter = new QRCodeWriter();
+        BitMatrix byteMatrix = qrCodeWriter.encode(qrCodeText, BarcodeFormat.QR_CODE, size, size, hintMap);
+        // Make the BufferedImage that are to hold the QRCode
+        int matrixWidth = byteMatrix.getWidth();
+        BufferedImage image = new BufferedImage(matrixWidth, matrixWidth, BufferedImage.TYPE_INT_RGB);
+        image.createGraphics();
+
+        Graphics2D graphics = (Graphics2D) image.getGraphics();
+        graphics.setColor(Color.WHITE);
+        graphics.fillRect(0, 0, matrixWidth, matrixWidth);
+        // Paint and save the image using the ByteMatrix
+        graphics.setColor(Color.BLACK);
+
+        for (int i = 0; i < matrixWidth; i++) {
+            for (int j = 0; j < matrixWidth; j++) {
+                if (byteMatrix.get(i, j)) {
+                    graphics.fillRect(i, j, 1, 1);
+                }
+            }
+        }
+
+        File qrFile = new File(filePath);
+        return ImageIO.write(image, fileType, qrFile);
+    }
+
+    public byte[] generateQRCode(String filePath, String text, int height, String fileType) throws WriterException, IOException
+    {
+        QRCodeWriter writer = new QRCodeWriter();
+        BitMatrix matrix = writer.encode(text, BarcodeFormat.QR_CODE, height, height);
+
+        Path path = FileSystems.getDefault().getPath(filePath);
+        MatrixToImageWriter.writeToPath(matrix, fileType, path);
+
+        File qrFile = new File(filePath);
+        return Files.readAllBytes(qrFile.toPath());
+    }
 }