[記事] The Quick Way to generate QR code in java

屬於阿宅世界的技術文章，想看的再點開，切莫自誤 !





1. download 2 Zxing jar libraries (core-2.2.jar, javase-2.2.jar) from Maven release repository

2. write the simple code

package com.abc.def;
import java.io.IOException;

import com.google.zxing.BarcodeFormat;
import com.google.zxing.WriterException;
import com.google.zxing.client.j2se.MatrixToImageWriter;
import com.google.zxing.common.BitMatrix;
import com.google.zxing.qrcode.QRCodeWriter;

public class QRGen {
  public static void main (String[] args){

    QRCodeWriter writer = new QRCodeWriter();
    BitMatrix bitMatrix = null;

    try {
      bitMatrix = writer.encode("http://google.come",
        BarcodeFormat.QR_CODE, 300, 300);
      MatrixToImageWriter.writeToFile(bitMatrix,
        "png", new File("/tmp/qrcode.png"));
    } catch (WriterException e) {
      e.printStackTrace();
    } catch (IOException e) {
      e.printStackTrace();
    }
  }
}


3. build and run it !