二维码的生成

package com.gce;

import java.io.*;
import java.util.Date;

import java.awt.*;
import java.awt.image.*;
import javax.imageio.*;
import com.swetake.util.Qrcode;

public class QRCodeEncoderTest
{

 /** Creates a new instance of QRCodeEncoderTest */
 public QRCodeEncoderTest()
 {
 }
 
 public static void create_image(String sms_info)throws Exception{
  try{
	  Qrcode testQrcode =new Qrcode();
            testQrcode.setQrcodeErrorCorrect('M');
            testQrcode.setQrcodeEncodeMode('B');
            testQrcode.setQrcodeVersion(7);
            String testString = sms_info;
            byte[] d = testString.getBytes("gbk");
            System.out.println(d.length);
            //BufferedImage bi = new BufferedImage(98, 98, BufferedImage.TYPE_INT_RGB);
            BufferedImage bi = new BufferedImage(98, 98, BufferedImage.TYPE_BYTE_BINARY);
            Graphics2D g = bi.createGraphics();
            g.setBackground(Color.WHITE);
            g.clearRect(0, 0, 98, 98);
            g.setColor(Color.BLACK);
            
            // 限制最大字节数为120
            if (d.length>0 && d.length <120){
                boolean[][] s = testQrcode.calQrcode(d);
                for (int i=0;i<s.length;i++){
                    for (int j=0;j<s.length;j++){
                        if (s[j][i]) {
                            g.fillRect(j*2+3,i*2+3,2,2);
                        }
                    }
                }
            }
            g.dispose();
            bi.flush();
            File f = new File("D:\\QRCodeTest\\"+sms_info+".jpg");
            if(!f.exists()){
       f.createNewFile();
            }
            //创建图片
            ImageIO.write(bi, "jpg", f);
            
        } // end try
        catch (Exception e) {
            e.printStackTrace();
        } // end catch
 }

 public static void main(String[] args) throws Exception {
        System.out.println(new Date());
        for(int i =1; i < 100000; i ++){
         QRCodeEncoderTest.create_image(i+"");
        }
        System.out.println(new Date());
    } // end main
}

package com.gce;

import java.awt.Color;  
import java.awt.Graphics2D;  
import java.awt.image.BufferedImage;  
import java.io.File;  
  
import javax.imageio.ImageIO;  
  
import com.swetake.util.Qrcode;  
  
/** 
 * 二维码生成器 
 * @blog http://sjsky.iteye.com 
 * @author Michael 
 */  
public class QRCodeEncoderHandler {
  
    /** 
     * 生成二维码(QRCode)图片 
     * @param content 
     * @param imgPath 
     */  
    public void encoderQRCode(String content, String imgPath) {  
        try {  
  
            Qrcode qrcodeHandler = new Qrcode();  
            qrcodeHandler.setQrcodeErrorCorrect('M');  
            qrcodeHandler.setQrcodeEncodeMode('B');  
            qrcodeHandler.setQrcodeVersion(7);  
  
            System.out.println(content);  
            byte[] contentBytes = content.getBytes("gb2312");  
  
            BufferedImage bufImg = new BufferedImage(140, 140,  
                    BufferedImage.TYPE_INT_RGB);  
  
            Graphics2D gs = bufImg.createGraphics();  
  
            gs.setBackground(Color.WHITE);  
            gs.clearRect(0, 0, 140, 140);  
  
            // 设定图像颜色 > BLACK  
            gs.setColor(Color.BLACK);  
  
            // 设置偏移量 不设置可能导致解析出错  
            int pixoff = 2;  
            // 输出内容 > 二维码  
            if (contentBytes.length > 0 && contentBytes.length < 120) {  
                boolean[][] codeOut = qrcodeHandler.calQrcode(contentBytes);  
                for (int i = 0; i < codeOut.length; i++) {  
                    for (int j = 0; j < codeOut.length; j++) {  
                        if (codeOut[j][i]) {  
                            gs.fillRect(j * 3 + pixoff, i * 3 + pixoff, 3, 3);  
                        }  
                    }  
                }  
            } else {  
                System.err.println("QRCode content bytes length = "  
                        + contentBytes.length + " not in [ 0,120 ]. ");  
            }  
  
            gs.dispose();  
            bufImg.flush();  
  
            File imgFile = new File(imgPath);  
  
            // 生成二维码QRCode图片  
            ImageIO.write(bufImg, "png", imgFile);  
  
        } catch (Exception e) {  
            e.printStackTrace();  
        }  
  
    }  
  
    /** 
     * @param args the command line arguments 
     */  
    public static void main(String[] args) {  
        String imgPath = "C://Michael_QRCode.png";  
  
        String content = "Hello,welcome to QRCode!"  
                + "\nEMail [ [e-mail] ]" + "\nTwitter [ @sj134 ]";  
  
        QRCodeEncoderHandler handler = new QRCodeEncoderHandler();  
        handler.encoderQRCode(content, imgPath);  
  
        System.out.println("encoder QRcode success");  
    }
} 

package com.gce;

import java.awt.image.BufferedImage;  
import java.io.File;  
import java.io.IOException;  
  
import javax.imageio.ImageIO;  
  
import jp.sourceforge.qrcode.QRCodeDecoder;  
import jp.sourceforge.qrcode.data.QRCodeImage;  
import jp.sourceforge.qrcode.exception.DecodingFailedException;  
  
/** 
 * @blog http://sjsky.iteye.com 
 * @author Michael 
 */  
public class QRCodeDecoderHandler {  
  
    /** 
     * 解码二维码 
     * @param imgPath 
     * @return String 
     */  
    public String decoderQRCode(String imgPath) {  
  
        // QRCode 二维码图片的文件  
        File imageFile = new File(imgPath);  
  
        BufferedImage bufImg = null;  
        String decodedData = null;  
        try {  
            bufImg = ImageIO.read(imageFile);  
  
            QRCodeDecoder decoder = new QRCodeDecoder();  
            decodedData = new String(decoder.decode(new J2SEImage(bufImg)));  
  
            // try {  
            // System.out.println(new String(decodedData.getBytes("gb2312"),  
            // "gb2312"));  
            // } catch (Exception e) {  
            // // TODO: handle exception  
            // }  
        } catch (IOException e) {  
            System.out.println("Error: " + e.getMessage());  
            e.printStackTrace();  
        } catch (DecodingFailedException dfe) {  
            System.out.println("Error: " + dfe.getMessage());  
            dfe.printStackTrace();  
        }  
        return decodedData;  
    }  
  
    /** 
     * @param args the command line arguments 
     */  
    public static void main(String[] args) {  
        QRCodeDecoderHandler handler = new QRCodeDecoderHandler();  
        String imgPath = "C://Michael_QRCode.png";  
        String decoderContent = handler.decoderQRCode(imgPath);  
        System.out.println("解析结果如下：");  
        System.out.println(decoderContent);  
        System.out.println("========decoder success!!!");  
    }  
  
    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);  
        }  
  
    }  
}  

这里需要用下面的几个jar包