需要的jar包下載地址 http://download.csdn.net/detail/sinat_22750705/9748085
package BasicsTest;import com.swetake.util.Qrcode;import jp.sourceforge.qrcode.QRCodeDecoder;import jp.sourceforge.qrcode.data.QRCodeImage;import jp.sourceforge.qrcode.exception.DecodingFailedException;import javax.imageio.ImageIO;import java.awt.*;import java.awt.image.BufferedImage;import java.io.File;import java.io.IOException;/** * 二維碼生成 * Created by xs on 2017/2/6. */public class QRCode {    /**     * @param args the command line arguments     */    public static void main(String[] args) {               QRCode handlers = new QRCode();        String imgPaths = "qrCodeTest.png";        String decoderContent = handler.decoderQRCode(imgPaths);        System.out.PRintln("解析結果如下：");        System.out.println(decoderContent);        System.out.println("========decoder success!!!");    }    /**          * 解碼二維碼          * @param imgPath         * @return String         */       public String decoderQRCode(String imgPath) {             // QRCode 二維碼圖片的文件              File imageFile=new File(imgPath);             //BufferedImage 提供創建和修改圖像的各種類              BufferedImage bufImg = null;              String decodedData = null;             try {                     bufImg = ImageIO.read(imageFile);                     QRCodeDecoder decoder = new QRCodeDecoder();                     decodedData = new String(decoder.decode(new J2SEImage(bufImg)));              } catch (IOException e) {                       System.out.println("Error: " + e.getMessage());                       e.printStackTrace();              } catch (DecodingFailedException dfe) {                       System.out.println("Error: " + dfe.getMessage());                       dfe.printStackTrace();              }        return decodedData;      }       //二維碼圖片      class J2SEImage implements QRCodeImage {                BufferedImage bufImg;              public J2SEImage(BufferedImage bufImg) {                     this.bufImg = bufImg;              }              public int getWidth() {                     return bufImg.getWidth();               }              public int getHeight() {                     return bufImg.getHeight();               }               public int getPixel(int x, int y) {                     return bufImg.getRGB(x, y);               }       }}結果如下：