ZXing Maven的POM.xml文件 Google提供的Util类 入口类 生成的二维码 参考资料 ZXing ZXing(Zebra Crossing)是一个Google开源的,支持多种格式的条形码图像处理库,使用java实现,同时为其他语言提供接口。 Maven的POM.xml文件 <dependency> <groupId>com.google.zxing</groupId> <artifactId>core</artifactId> <version>3.2.0</version> </dependency> <dependency> <groupId>com.google.zxing</groupId> <artifactId>javase</artifactId> <version>3.2.0</version> </dependency> Google提供的Util类 package com.freud.test.TestZxing; import java.awt.image.BufferedImage; import java.io.File; import java.io.IOException; import java.io.OutputStream; import javax.imageio.ImageIO; import com.google.zxing.common.BitMatrix; public final class MatrixToImageWriter { private static final int BLACK = 0xFF000000; private static final int WHITE = 0xFFFFFFFF; private MatrixToImageWriter() { } public static BufferedImage toBufferedImage(BitMatrix matrix) { int width = matrix.getWidth(); int height = matrix.getHeight(); BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB); for (int x = 0; x < width; x++) { for (int y = 0; y < height; y++) { image.setRGB(x, y, matrix.get(x, y) ? BLACK : WHITE); } } return image; } public static void writeToFile(BitMatrix matrix, String format, File file) throws IOException { BufferedImage image = toBufferedImage(matrix); if (!ImageIO.write(image, format, file)) { throw new IOException("Could not write an image of format " + format + " to " + file); } } public static void writeToStream(BitMatrix matrix, String format, OutputStream stream) throws IOException { BufferedImage image = toBufferedImage(matrix); if (!ImageIO.write(image, format, stream)) { throw new IOException("Could not write an image of format " + format); } } } 入口类 package com.freud.test.TestZxing; import java.awt.image.BufferedImage; import java.io.File; import java.text.SimpleDateFormat; import java.util.Date; import java.util.HashMap; import java.util.Hashtable; import java.util.Map; import javax.imageio.ImageIO; import com.google.zxing.BarcodeFormat; import com.google.zxing.Binarizer; import com.google.zxing.BinaryBitmap; import com.google.zxing.DecodeHintType; import com.google.zxing.EncodeHintType; import com.google.zxing.LuminanceSource; import com.google.zxing.MultiFormatReader; import com.google.zxing.MultiFormatWriter; import com.google.zxing.Reader; import com.google.zxing.Result; import com.google.zxing.client.j2se.BufferedImageLuminanceSource; import com.google.zxing.common.BitMatrix; import com.google.zxing.common.HybridBinarizer; public class Test { public static String generate() throws Exception { String text = "HelloWorld"; int width = 300; int height = 300; // 二维码的图片格式 String format = "png"; Hashtable<EncodeHintType, String> hints = new Hashtable<EncodeHintType, String>(); // 内容所使用编码 hints.put(EncodeHintType.CHARACTER_SET, "utf-8"); BitMatrix bitMatrix = new MultiFormatWriter().encode(text, BarcodeFormat.QR_CODE, width, height, hints); // 生成二维码 File outputFile = new File( "f:" + File.separator + "qrcode" + File.separator + new SimpleDateFormat("yyyy-MM-dd HH-mm-ss") .format(new Date()) + ".png"); System.out.println("图片生成在:[" + outputFile.getAbsolutePath() + "]"); MatrixToImageWriter.writeToFile(bitMatrix, format, outputFile); return outputFile.getAbsolutePath(); } public static void read(String fileName) throws Exception { Reader reader = new MultiFormatReader(); BufferedImage image = ImageIO.read(new File(fileName)); LuminanceSource source = new BufferedImageLuminanceSource(image); Binarizer binarizer = new HybridBinarizer(source); BinaryBitmap bitmap = new BinaryBitmap(binarizer); Map<DecodeHintType, String> hints = new HashMap<DecodeHintType, String>(); hints.put(DecodeHintType.CHARACTER_SET, "UTF-8"); Result result = reader.decode(bitmap); System.out.println(result.toString()); } public static void main(String[] args) throws Exception { String filePath = generate(); read(filePath); } } 生成的二维码 参考资料 http://blog.csdn.net/feiyu84/article/details/9089497 ZXing官网https://github.com/zxing/zxing