Java生成二维码，基于QRCode

package test;

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 {

		System.out.println(new Date());

		QRCodeEncoderTest.create_image("QRCode");

		System.out.println(new Date());

	}

}

jar包：