最近公司要求扫描二维码和生成二维码的功能。而群里部分网友也提到了。我这里就写了一个demo,和大家分享。代码很简介,希望大家能够喜欢。
网友表示在网上搜索了很多,发现不是代码不全,就是jar不匹配。
我这里共享了一个zxing的2.2版本的例子,也提供了下载地址。实现代码如下:
package com.herman.test; import java.io.File; import java.io.FileInputStream; import java.io.FileNotFoundException; import java.io.IOException; import java.util.HashMap; import java.util.Map; import javax.imageio.ImageIO; import com.google.zxing.BarcodeFormat; import com.google.zxing.BinaryBitmap; import com.google.zxing.DecodeHintType; import com.google.zxing.EncodeHintType; import com.google.zxing.MultiFormatReader; import com.google.zxing.MultiFormatWriter; import com.google.zxing.NotFoundException; import com.google.zxing.WriterException; import com.google.zxing.client.j2se.BufferedImageLuminanceSource; import com.google.zxing.client.j2se.MatrixToImageWriter; import com.google.zxing.common.HybridBinarizer; import com.google.zxing.qrcode.decoder.ErrorCorrectionLevel; /** * 二维码工具类 * @author Herman.Xiong * @date 2015-7-10 上午10:52:15 * @version V3.0 * @since jdk 1.6,tomcat 6.0 */ public class ZxingUtil { private static final Map<EncodeHintType, ErrorCorrectionLevel> encodeMap = new HashMap<EncodeHintType, ErrorCorrectionLevel>(); private static final Map<DecodeHintType, ErrorCorrectionLevel> decodeMap=new HashMap<DecodeHintType, ErrorCorrectionLevel>(); private static final String charset="UTF-8",format="png"; private static final int size=150; private ZxingUtil() {} /** * 生成二维码图片 * @author Herman.Xiong * @date 2015-7-10 上午10:26:33 * @param file * @throws WriterException * @throws IOException */ public static void createQRCode(String data, File file) throws WriterException, IOException { MatrixToImageWriter.writeToFile(new MultiFormatWriter().encode( new String(data.getBytes(charset), charset), BarcodeFormat.QR_CODE, size, size, encodeMap), format, file); } /** * 读取二维码信息 * @author Herman.Xiong * @date 2015-7-10 上午10:25:58 * @param filePath 二维码图片路径 * @return * @throws FileNotFoundException * @throws IOException * @throws NotFoundException */ public static String readQRCode(String filePath) throws FileNotFoundException, IOException, NotFoundException { return new MultiFormatReader().decode(new BinaryBitmap(new HybridBinarizer(new BufferedImageLuminanceSource(ImageIO.read(new FileInputStream(filePath))))),decodeMap).getText(); } public static void main(String [] arg){ try{ createQRCode("http://blog.csdn.net/xmtblog", new File("D:\\111.png")); System.out.println(readQRCode("D:\\111.png")); //源码下载地址:http://download.csdn.net/detail/xmt1139057136/8886473 //欢迎大家关注我的博客!如有疑问,请加QQ群:454796847共同学习! }catch(Exception e){ e.printStackTrace(); } } }运行效果如下:
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源码下载地址:http://download.csdn.net/detail/xmt1139057136/8886473