本文实例为大家分享了java二维码的实现代码,供大家参考,具体内容如下
这次用到的jar包是zxing,没有用到core的jar包
先导入zxing.jar包
生成二维码
package cn.huse.erweima; import java.io.File; import java.util.HashMap; 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; import com.google.zxing.qrcode.decoder.ErrorCorrectionLevel; /** * 生成二维码 * */ public class CreateQRCode { public static void main(String[] args) { int width = 300; int height = 300; String format = "gif"; String content = "www.baidu.com"; //定义二维码的参数 HashMap hints = new HashMap<>(); hints.put(EncodeHintType.CHARACTER_SET, "utf-8"); hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.M); try { BitMatrix matrix = new MultiFormatWriter().encode(content, BarcodeFormat.QR_CODE, width, height,hints); File file = new File("e:"+File.separator+"new.gif"); MatrixToImageWriter.writeToFile(matrix, format, file); } catch (Exception e) { e.printStackTrace(); } } }
解析二维码
package cn.huse.erweima; import java.awt.image.BufferedImage; import java.io.File; import java.io.IOException; import java.util.HashMap; import javax.imageio.ImageIO; import com.google.zxing.BinaryBitmap; import com.google.zxing.EncodeHintType; import com.google.zxing.MultiFormatReader; import com.google.zxing.NotFoundException; import com.google.zxing.Result; import com.google.zxing.client.j2se.BufferedImageLuminanceSource; import com.google.zxing.common.HybridBinarizer; //解析二维码 public class ReadQRCode { public static void main(String[] args) { MultiFormatReader formatReader = new MultiFormatReader(); File file = new File("e:"+File.separator+"new.gif"); try { BufferedImage image = ImageIO.read(file); BinaryBitmap binaryBitmap = new BinaryBitmap(new HybridBinarizer(new BufferedImageLuminanceSource(image))); HashMap hints = new HashMap<>(); hints.put(EncodeHintType.CHARACTER_SET, "utf-8"); Result result = formatReader.decode(binaryBitmap,hints); System.out.println(result.toString()); System.out.println(result.getBarcodeFormat()); System.out.println(result.getText()); } catch (NotFoundException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } } }
以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持亿速云。
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