二维码生成代码

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 {


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(20);


String testString = sms_info;


byte[] d = testString.getBytes("gbk");


System.out.println(d.length);


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 < 300) {


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:\\" + 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 {


QRCodeEncoderTest.create_image("QRCode");


}


}