import java.awt.Color;
import java.awt.Graphics2D;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.OutputStream;
import javax.imageio.ImageIO;
import com.swetake.util.Qrcode;
public class TwoDimensionCode {
public void encoderQRCode(String content, String imgPath, String imgType) {
this.encoderQRCode(content, imgPath, imgType, 7);
}
public void encoderQRCode(String content, String imgPath, String imgType,
int size) {
try {
BufferedImage bufImg = this.qRCodeCommon(content, imgType, size);
File imgFile = new File(imgPath);
ImageIO.write(bufImg, imgType, imgFile);
} catch (Exception e) {
e.printStackTrace();
}
}
public void encoderQRCode(String content, OutputStream output,
String imgType, int size) {
try {
BufferedImage bufImg = this.qRCodeCommon(content, imgType, size);
ImageIO.write(bufImg, imgType, output);
} catch (Exception e) {
e.printStackTrace();
}
}
private BufferedImage qRCodeCommon(String content, String imgType, int size) {
BufferedImage bufImg = null;
try {
Qrcode qrcodeHandler = new Qrcode();
qrcodeHandler.setQrcodeErrorCorrect('M');
qrcodeHandler.setQrcodeEncodeMode('B');
qrcodeHandler.setQrcodeVersion(size);
byte[] contentBytes = content.getBytes("utf-8");
int imgSize = 67 + 12 * (size - 1);
bufImg = new BufferedImage(imgSize, imgSize,
BufferedImage.TYPE_INT_RGB);
Graphics2D gs = bufImg.createGraphics();
gs.setBackground(Color.WHITE);
gs.clearRect(0, 0, imgSize, imgSize);
gs.setColor(Color.BLACK);
int pixoff = 2;
if (contentBytes.length > 0 && contentBytes.length < 800) {
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 {
throw new Exception("QRCode content bytes length = "
+ contentBytes.length + " not in [0, 800].");
}
gs.dispose();
bufImg.flush();
} catch (Exception e) {
e.printStackTrace();
}
return bufImg;
}
public static void main(String[] args) {
String imgPath = "D:/abing.png";
String encoderContent = "本地生活技术部-开发一组-阿丙 [email protected] 新浪微博http://weibo.com/bingyingao";
TwoDimensionCode handler = new TwoDimensionCode();
handler.encoderQRCode(encoderContent, imgPath, "png");
}
}
所需jar包见附件