使用ZXing生成可供手机识别的二维码

以下是代码

package com.paliec.test.qrcodegenerator;
import com.google.zxing.BarcodeFormat;

import com.google.zxing.EncodeHintType;

import com.google.zxing.MultiFormatWriter;

import com.google.zxing.common.BitMatrix;

import java.awt.image.BufferedImage;

import java.io.File;

import java.io.IOException;

import java.util.HashMap;

import java.util.Map;

import javax.imageio.ImageIO;

/**

* Hello world!

*

*/

public class App {

private static final int BLACK = 0xFF000000;

private static final int WHITE = 0xFFFFFFFF;

private static BufferedImage toBufferedImage(BitMatrix matrix) {

int width = matrix.getWidth();

int height = matrix.getHeight();

BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);

for (int x = 0; x < width; x++) {

for (int y = 0; y < height; y++) {

image.setRGB(x, y, matrix.get(x, y) ? BLACK : WHITE);

}

}

return image;

}

private static void writeToFile(BitMatrix matrix, String format, File file)

throws IOException {

BufferedImage image = App.toBufferedImage(matrix);

if (!ImageIO.write(image, format, file)) {

throw new IOException("Could not write an image of format " + format + " to " + file);

}

}

public static void main(String[] args) {

try {

String content = "http://my.oschina.net/mogralee/blog/测试";

String path = "G:/mobileProject/practice/qrcode";

MultiFormatWriter multiFormatWriter = new MultiFormatWriter();

Map hints = new HashMap();

hints.put(EncodeHintType.CHARACTER_SET, "
utf-8"); //红色部分一定要是小写，不然会产生无法识别的问题

BitMatrix bitMatrix = multiFormatWriter.encode(content, BarcodeFormat.QR_CODE, 200, 200, hints);

File file1 = new File(path, "pic.jpg");

App.writeToFile(bitMatrix, "jpg", file1);

System.out.println("生成成功");

} catch (Exception e) {

e.printStackTrace();

}

}

}