zxing 这个是google的
下载地址
http://code.google.com/p/zxing/downloads/list
二维码源码案例
package com.utils; import java.awt.image.BufferedImage; import java.awt.image.DataBufferByte; import java.io.File; import java.io.IOException; import java.util.Date; import java.util.Hashtable; import javax.imageio.ImageIO; import com.google.zxing.BarcodeFormat; import com.google.zxing.EncodeHintType; import com.google.zxing.MultiFormatWriter; import com.google.zxing.common.BitMatrix; public class UtilsQrCode { private static final int BLACK = 0xff000000; private static final int WHITE = 0xFFFFFFFF; /** * @param args */ public static void main(String[] args) { File file = new File("C:\\Users\\huage\\Desktop\\图片\\"+new Date().getTime()+".png"); encode("http://www.baidu.com", file, BarcodeFormat.QR_CODE, 200, 200); } /** * @param contents * @param file * @param format * @param width * @param height */ public static void encode(String contents, File file, BarcodeFormat format, int width, int height) { try { contents = new String(contents.getBytes("UTF-8"), "ISO-8859-1"); Hashtable<EncodeHintType, Object> hints = new Hashtable<EncodeHintType, Object>(); hints.put(EncodeHintType.CHARACTER_SET, "utf-8"); hints.put(EncodeHintType.MARGIN, 1); BitMatrix bitMatrix = new MultiFormatWriter().encode(contents, format, width, height,hints); BufferedImage image = toBufferedImage(bitMatrix); writeToFile(image, "png", file); } catch (Exception e) { e.printStackTrace(); } } public static byte[] imgToBytes(BufferedImage image){ if( image == null ) return new byte[0]; byte[] data = ((DataBufferByte) image.getData().getDataBuffer()).getData(); return data; } public static void writeToFile(BufferedImage image, String format, File file) throws IOException { if( image == null || file == null ) return; ImageIO.write(image, format, file); } public static BufferedImage toBufferedImage(BitMatrix matrix) { int width = matrix.getWidth(); int height = matrix.getHeight(); BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_ARGB); for (int x = 0; x < width; x++) { for (int y = 0; y < height; y++) { image.setRGB(x, y, matrix.get(x, y) == true ? BLACK : WHITE); } } return image; } }
时间: 2024-10-14 17:00:43