<dependency>  <groupId>com.google.zxing</groupId>  <artifactId>core</artifactId>  <version>3.0.0</version>  </dependency>  <dependency>  <groupId>com.google.zxing</groupId>  <artifactId>javase</artifactId>  <version>3.0.0</version>    </dependency>

public static void main(String[] args) throws IOException {String text="www.baidu.com";int width=100;int height=100;String format="png";Hashtable hints=new Hashtable();hints.put(EncodeHintType.CHARACTER_SET, "utf-8");hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.M);hints.put(EncodeHintType.MARGIN, 2);try {BitMatrix bitMatrix=new MultiFormatWriter().encode(text, BarcodeFormat.QR_CODE, width, height,hints); Path file=new Java.io.File("D:/new.png").toPath();MatrixToImageWriter.writeToPath(bitMatrix, format, file);} catch (WriterException e) {// TODO Auto-generated catch blocke.printStackTrace();}解析二維碼：public static void main(String[] args) throws NotFoundException {MultiFormatReader formatReader=new MultiFormatReader();File file =new File("D:/new.png");BufferedImage image=null;try {image = ImageIO.read(file);} catch (IOException e) {// TODO Auto-generated catch blocke.printStackTrace();}BinaryBitmap binaryBitmap =new BinaryBitmap(new HybridBinarizer(new BufferedImageLuminanceSource(image)));Hashtable hints=new Hashtable();hints.put(EncodeHintType.CHARACTER_SET, "utf-8");Result result=formatReader.decode(binaryBitmap,hints);System.err.println("解析結果："+result.toString());System.out.println(result.getBarcodeFormat());System.out.println(result.getText());}