QRCode generation prototype

gistfile1.java

import com.google.zxing.common.BitMatrix;
import com.google.zxing.qrcode.QRCodeWriter;

import javax.imageio.ImageIO;
import java.awt.*;
import java.awt.image.BufferedImage;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.TimeUnit;

import static com.google.zxing.BarcodeFormat.QR_CODE;

/**
 * QRCode Test
 *
 * @author : bhkim
 * @since : 2014-04-28 오후 3:27
 */
public class Main {
    private static final Path BaseImagePath = Paths.get("/Users/bhkim/temp");
    static ExecutorService q = Executors.newFixedThreadPool(4);

    static class Job implements Runnable {
        private int start;
        private int end;

        public Job(int start, int end) {
            this.start = start;
            this.end = end;
        }

        @Override
        public void run() {
            for (; start < end; start++)
                writeQRImage("http://memestudio.kr/code?q=cXdlcnF3ZXJxd2VycWVyYWZkYXNkZmFzZGZhc2RmYXNkZmFzZGZhc2RmcXdlcnF3ZXJxd2VycWVy\n" +
                        "YWZkYXNkZmFzZGZhc2RmYXNkZmFzZGZhc2RmcXdlcnF3ZXJxd2VycWVyYWZkYXNkZmFzZGZhc2Rm" +
                        "YXNkZmFzZGZhc2RmcXdlcnF3ZXJxd2VycWVyYWZkYXNkZmFzZGZhc2RmYXNkZmFzZGZhc2Rm", start);
        }
    }

    public static void main(String[] args) throws InterruptedException {
        int cpucount = Runtime.getRuntime().availableProcessors();
        int jobCount = 10000; // 좝 카운트
        int div = jobCount / cpucount; // 좝당 할당할 작업 갯수
        int jobOffset = 0;

        System.out.println("Processor number: " + cpucount);
        for (int i = 0; i < cpucount; i++) {
            q.submit(new Job(jobOffset, jobOffset + div));
            jobOffset += div;
        }
        q.shutdown();
        q.awaitTermination(1, TimeUnit.DAYS);
    }

    public static void writeQRImage(String content, int i) {
        int imageSize = 256;
        QRCodeWriter writer = new QRCodeWriter();
        try {
            BitMatrix matrix = writer.encode(content, QR_CODE, imageSize, imageSize, null);
            BufferedImage img = toImage(matrix);
            ImageIO.write(img, "png", BaseImagePath.resolve("a" + i + ".png").toFile());
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    /**
     * QRCode Matrix 를 Image 형태로 변환한다.
     *
     * @param mat
     * @return BufferedImage
     */
    static BufferedImage toImage(BitMatrix mat) {
        int width = mat.getWidth(), height = mat.getHeight();
        BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_ARGB);
        for (int x = 0; x < width; x++) {
            for (int y = 0; y < height; y++) {
                image.setRGB(x, y, (mat.get(x, y) ? Color.BLACK : Color.WHITE).getRGB());
            }
        }
        return image;
    }
}