package erweima;
import java.awt.Color;
import java.awt.Graphics2D;
import java.awt.Image;
import java.awt.image.BufferedImage;
import java.io.File;
import javax.imageio.ImageIO;
import com.swetake.util.Qrcode;
public class WeiXinCode {
  public static void main(String[] args) {
    String s="https://blog.csdn.net/qq_26230421";
    getQrcodeImage(s, "d:/output.png");
  }
  public static void getQrcodeImage(String content, String imgPath) {
    int width = 235;
    int height = 235;
    //实例化一个对象
    Qrcode qrcode = new Qrcode();
    //编码方式
    qrcode.setQrcodeEncodeMode('B');
    //设置拍错率
    qrcode.setQrcodeErrorCorrect('M');
    //二维码的版本
    qrcode.setQrcodeVersion(15);
    //绘制二维码
    //画板
    BufferedImage image = new BufferedImage(width, height,
    BufferedImage.TYPE_INT_RGB);
    //画笔
    Graphics2D gs = image.createGraphics();
    //设置背景颜色
    gs.setBackground(Color.red);
    //设置二维码的颜色
    gs.setColor(Color.red);
    //创建一个二维码的绘制区域
    gs.clearRect(0, 0, width, height);
    byte[] codeOut;
    try {
      codeOut = content.getBytes("utf-8");
      boolean[][] code = qrcode.calQrcode(codeOut);
      for (int i = 0; i < code.length; i++) {
        for (int j = 0; j < code.length; j++) {
          if (code[j][i]) {
            gs.fillRect(j * 3 + 2, i * 3 + 2, 3, 3);
          }
        }
      }
      //加载logo  D:/111.png 这个你需要改成你自己的
      File file = new File("D:/input.png");
      Image srcImage = ImageIO.read(file);
      int imgWidth = srcImage.getWidth(null);
      int imgHeith = srcImage.getHeight(null);
      gs.drawImage(srcImage, 50, 90, imgWidth, imgHeith, null);
      //释放资源
      gs.dispose();
      image.flush();
      //写入指定路径
      ImageIO.write(image, "png", new File(imgPath));
      System.out.println("二维码生成成功了！");
    } catch (Exception e) {
      //TODO Auto-generated catch block
      e.printStackTrace();
    } finally {
    }
  }
}