内容大部分属于转载
并且个人进行一些内容搜集
编码:
QRCodeEncoderHandler.java
package QrTest; 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; public class QRCodeEncodeHandler { 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 > Color.Black gs.setColor(Color.BLACK); //设置偏移量,不设置可能会导致解析出错 int pixoff = 3; //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++) { //这里注意,二维码打印应该是 if (codeOut[j][i]) { gs.fillRect(j * 3 + pixoff, i * 3 + pixoff, 3, 3); } } } } else { System.err.println("QRCode content bytes length = " + content.length() + " not in [0, 120]"); } gs.dispose(); bufImg.flush(); File imgFile = new File(imgPath); //生成二维码的图片 ImageIO.write(bufImg, "png", imgFile); } catch (Exception e) { // TODO: handle exception e.printStackTrace(); } } public static void main(String[] args) { // TODO Auto-generated method stub String imgPath = "H:/qrtest/1.png"; String content = "I love you"; QRCodeEncodeHandler handler = new QRCodeEncodeHandler(); handler.encoderQRcode(content, imgPath); System.out.println("succeed"); } }
引自:http://www.micmiu.com/enterprise-app/java-qrcode/
里面有更多的内容,比如解码和新的类库zxing的介绍
链接:http://download.csdn.net/detail/liuzhen_333/7346643
csdn 0积分下载qrcode_swetake.jar
链接:http://coolshell.cn/articles/10590.html
二维码详解
链接:http://blog.csdn.net/lcx46/article/details/13626841
使用zxing生成嵌入图片的二维码
链接:http://blog.csdn.net/u014184244/article/details/39692971
更加详细的