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1、域名 长度 后缀 删除日期 删除类型 33d.cc 3 cc 2012/9/4 Delete 今天朋友问我一个二维码的东西，说实话我重来也没接触过，于是上网找了一下，和朋友分享一下.用qrcode.jar也能做，但是一看小日本的，于是马上闪过，听所zxing挺好用的，于是就去google下了架包用了这个感觉确实简单，重百度找到写完一个例子只用了，10来分钟. /www.hake.ccZxing是Google提供的关于条码（一维码、二维码）的解析工具，提供了二维码的生成与解析的方法，现在我简单介绍一下使用Java利用Zxing生成与解析二维码1、二维码的生成1.1 将core.jar 包加入到c
2、lasspath下。 1.2 二维码的生成需要借助MatrixToImageWriter类，该类是由Google提供的，可以将该类拷贝到源码中，这里我将该类的源码贴上，可以直接使用。java view plaincopyprint?import mon.BitMatrix; import javax.imageio.ImageIO; import java.io.File; import java.io.OutputStream; import java.io.IOException; import java.awt.image.BufferedImage; public final clas
3、s 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 Buffer
4、edImage(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 = toBuf
5、feredImage(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 (!Im
6、ageIO.write(image, format, stream) throw new IOException(Could not write an image of format + format); import mon.BitMatrix; import javax.imageio.ImageIO; import java.io.File; import java.io.OutputStream; import java.io.IOException; import java.awt.image.BufferedImage; public final class MatrixToIma
7、geWriter 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
8、, 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(ma
9、trix); 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(i
10、mage, format, stream) throw new IOException(Could not write an image of format + format); 1.3 编写生成二维码的实现代码 /www.hake.ccjava view plaincopyprint?import java.io.File; import java.util.Hashtable; import com.google.zxing.BarcodeFormat; import com.google.zxing.EncodeHintType; import com.google.zxing.Mult
11、iFormatWriter; import mon.BitMatrix; public class TestEncode public static void main(String args)throws Exception String text = 你好; int width = 100; int height = 100; String format = png; Hashtable hints= new Hashtable(); hints.put(EncodeHintType.CHARACTER_SET, UTF-8); BitMatrix bitMatrix = new Mult
12、iFormatWriter().encode(text, BarcodeFormat.QR_CODE, width, height,hints); File outputFile = new File(d:/new.png); MatrixToImageWriter.writeToFile(bitMatrix, format, outputFile); import java.io.File; import java.util.Hashtable; import com.google.zxing.BarcodeFormat; import com.google.zxing.EncodeHint
13、Type; import com.google.zxing.MultiFormatWriter; import mon.BitMatrix; public class TestEncode public static void main(String args)throws Exception String text = 你好; int width = 100; int height = 100; String format = png; Hashtable hints= new Hashtable(); hints.put(EncodeHintType.CHARACTER_SET, UTF-
14、8); BitMatrix bitMatrix = new MultiFormatWriter().encode(text, BarcodeFormat.QR_CODE, width, height,hints); File outputFile = new File(d:/new.png); MatrixToImageWriter.writeToFile(bitMatrix, format, outputFile); 现在运行后即可生成一张二维码图片，是不是很简单啊？ 接下来我们看看如何解析二维码2、二维码的解析2.1 将core.jar 包加入到classpath下。2.2 和生成一样，我们需要一个辅助类（ BufferedImageLuminanceSource），同样该类Google也提供了，这里我同样将该类的源码贴出来，可以直接拷贝使用个，省去查找的麻烦java view plaincopyprint?import com.google.zxing.LuminanceSource; import java.awt.Graphics2D; import java.awt.geom.AffineTr
