[ADD] Генерация QR-кода

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());
+ }
 }