二维码项目ZXing在Java中的使用

项目地址：

http://code.google.com/p/zxing/

可以先到这个地址下载Zxing的支持类库

ZXing是一个开源Java类库用于解析多种格式的1D/2D条形码。目标是能够对QR编码、Data Matrix、UPC的1D条形码进行解码。 其提供了多种平台下的客户端包括：J2ME、J2SE和Android。

下载介绍下ZXing在Java中的使用：

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import java.awt.image.BufferedImage;import java.io.File;import javax.imageio.ImageIO;import com.google.zxing.BarcodeFormat;import com.google.zxing.Binarizer;import com.google.zxing.BinaryBitmap;import com.google.zxing.LuminanceSource;import com.google.zxing.Result;import com.google.zxing.client.j2se.BufferedImageLuminanceSource;import com.google.zxing.client.j2se.MatrixToImageWriter;import com.google.zxing.common.BitMatrix;import com.google.zxing.common.HybridBinarizer;import com.google.zxing.qrcode.QRCodeReader;import com.google.zxing.qrcode.QRCodeWriter;/** * 二维码学习 * @author LiYongqiang */public class ZxingTest {public static void main(String[] args) throws Exception{String content = "http://192.168.0.1:8080/sfda/";content = new String(content.getBytes("GBK"),"iso-8859-1");String imagePath = "c:\\code.png";File file = new File(imagePath);QRCodeWriter writer = new QRCodeWriter();try {//生成二维码BitMatrix matrix = writer.encode(content, BarcodeFormat.QR_CODE,200, 200);MatrixToImageWriter.writeToFile(matrix, "png", file);//读取二维码QRCodeReader reader = new QRCodeReader();BufferedImage image = ImageIO.read(file);LuminanceSource source = new BufferedImageLuminanceSource(image );Binarizer binarizer = new HybridBinarizer(source );BinaryBitmap imageBinaryBitmap = new BinaryBitmap(binarizer  );Result result = reader.decode(imageBinaryBitmap);System.out.println("result = "+ result.toString());            System.out.println("resultFormat = "+ result.getBarcodeFormat());            System.out.println("resultText = "+ result.getText());} catch (Exception e) {e.printStackTrace();}}}

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