发布时间:2019-01-20作者:spider阅读(2588)
Java二维码的解码和编码
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()); } }
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原文地址: https://www.sunjs.com/article/detail/0dc48b17258a4d81b7bfb43bd71e7a66.html
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