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需要用到的Jar包:ZXing-core.jar和ZXing-javase.jar。
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 | import java.io.File; import java.util.Hashtable; import com.google.zxing.BarcodeFormat; import com.google.zxing.EncodeHintType; import com.google.zxing.MultiFormatWriter; import com.google.zxing.client.j2se.MatrixToImageWriter; import com.google.zxing.common.BitMatrix; //编码 public class QREncoder { public static void main(String[] args) throws Exception { String content = "hello world" ; String encoding = "utf-8" ; int width = 150 ; int height = 150 ; String format = "jpg" ; File imagePath = new File( "d:/test.jpg" ); com.google.zxing.Writer writer = new MultiFormatWriter(); Hashtable<EncodeHintType, String> hints = new Hashtable<EncodeHintType, String>( 2 ); hints.put(EncodeHintType.CHARACTER_SET, encoding); BitMatrix matrix = writer.encode(content, BarcodeFormat.QR_CODE, width, height, hints); MatrixToImageWriter.writeToFile(matrix, format, imagePath); } } import java.io.File; import java.util.Hashtable; import javax.imageio.ImageIO; import com.google.zxing.Binarizer; import com.google.zxing.BinaryBitmap; import com.google.zxing.DecodeHintType; import com.google.zxing.LuminanceSource; import com.google.zxing.MultiFormatReader; import com.google.zxing.Reader; import com.google.zxing.Result; import com.google.zxing.client.j2se.BufferedImageLuminanceSource; import com.google.zxing.common.GlobalHistogramBinarizer; //解码 public class QRDecoder { public static void main(String[] args) throws Exception { File imagePath = new File( "d:/test.jpg" ); String encoding = "utf-8" ; Reader reader = new MultiFormatReader(); LuminanceSource ls = new BufferedImageLuminanceSource(ImageIO.read(imagePath)); Binarizer b = new GlobalHistogramBinarizer(ls); Hashtable<DecodeHintType, String> hint1 = new Hashtable<DecodeHintType, String>( 2 ); hint1.put(DecodeHintType.CHARACTER_SET, encoding); Result r = reader.decode( new BinaryBitmap(b), hint1); System.out.println(r.getText()); } } |