Java快速生成二维码(内附代码)

package com;

import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import java.util.Hashtable;

import javax.imageio.ImageIO;

import com.google.zxing.BarcodeFormat;
import com.google.zxing.EncodeHintType;
import com.google.zxing.MultiFormatWriter;
import com.google.zxing.WriterException;
import com.google.zxing.common.BitMatrix;

public class testQR {

@SuppressWarnings("static-access")
public static void main(String[] args) {
String adress = "http://blog.csdn.net/itzhangdaopin";
testQR get = new testQR();
get.picture(adress);
System.out.println("执行成功！！！");
}
/**
* @param args
* @return
* @throws Exception
*/
@SuppressWarnings({ "rawtypes", "unchecked" })
protected static void picture(String adress){

int width = 300;
int height = 300;
//二维码的图片格式
String format = "gif";
Hashtable hints = new Hashtable();
//内容所使用编码
hints.put(EncodeHintType.CHARACTER_SET, "utf-8");
try {
BitMatrix bitMatrix = new MultiFormatWriter().encode(adress,
BarcodeFormat.QR_CODE, width, height, hints);
//生成二维码
File outputFile = new File("d:"+File.separator+"news.gif");
testQR.writeToFile(bitMatrix, format, outputFile);
} catch (WriterException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
private static final int BLACK = 0xFF000000;
private static final int WHITE = 0xFFFFFFFF;

public 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;
}

public static void writeToFile(BitMatrix matrix, String format, File file)
throws IOException {
BufferedImage image = toBufferedImage(matrix);
if (!ImageIO.write(image, format, file)) {
throw new IOException("Could not write an image of format " + format + " to " + file);
}
}

}