QRcode生成二维码

import com.google.zxing.BarcodeFormat;
import com.google.zxing.EncodeHintType;
import com.google.zxing.MultiFormatWriter;
import com.google.zxing.client.j2se.MatrixToImageWriter;
import com.google.zxing.common.BitMatrix;
import com.google.zxing.qrcode.decoder.ErrorCorrectionLevel;
import java.io.File;
import java.util.HashMap;
import java.util.Map;

/**
 * Created by wjb on 2017/3/7.
 * 生成二维码
 */
public class CreateQRcode {
    public static void main(String[] args) {
        int width = 300;
        int height = 300;
        String format = "png";
        String content = "www.baidu.com";
//下面这个是解决中文乱码的
try {
    content = new String(content.getBytes("UTF-8"),"ISO-8859-1");
} catch (UnsupportedEncodingException e) {
    e.printStackTrace();
}




//        定义二维码的参数
        Map map = new HashMap();
        map.put(EncodeHintType.CHARACTER_SET,"utf-8");
        map.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.M);
        map.put(EncodeHintType.MARGIN,2);

        try {
            BitMatrix bitMatrix = new MultiFormatWriter().encode(content, BarcodeFormat.QR_CODE, width, height);
            File file = new File("f:/aaa");
            MatrixToImageWriter.writeToFile(bitMatrix,format,file);
        } catch (Exception e) {
            e.printStackTrace();
        }

    }

}

上面是生成二维码到F盘，先导入两个JAR包（zxing code 3.2.1 , zxing javase 3.2.1）,下面是解析二维码：

import com.google.zxing.BinaryBitmap;
import com.google.zxing.EncodeHintType;
import com.google.zxing.MultiFormatReader;
import com.google.zxing.Result;
import com.google.zxing.client.j2se.BufferedImageLuminanceSource;
import com.google.zxing.common.HybridBinarizer;

import javax.imageio.ImageIO;
import java.awt.image.BufferedImage;
import java.io.File;
import java.util.HashMap;
import java.util.Map;

/**
 * Created by wjb on 2017/3/7.
 * 解析二维码内容
 */
public class ReadQRcode {
    public static void main(String[] args) {
        MultiFormatReader multiFormatReader = new MultiFormatReader();
        File file = new File("f:/aaa");
        try {
            BufferedImage bufferedImage = ImageIO.read(file);
            BinaryBitmap binaryBitmap = new BinaryBitmap(new HybridBinarizer(new BufferedImageLuminanceSource(bufferedImage)));
            Map map = new HashMap();
            map.put(EncodeHintType.CHARACTER_SET,"utf-8");
            Result result = multiFormatReader.decode(binaryBitmap, map);
            System.out.println("解析结果："+result.toString());
            System.out.println("二维码类型："+result.getBarcodeFormat());
        } catch (Exception e) {
            e.printStackTrace();
        }


    }
}

还有另一种方式，使用Jquery.qrcode的方式生成

<%@ page contentType="text/html;charset=UTF-8" language="java" %>


    
    
    



生成的二维码如下: