QRCode 二维码生成

package QRCode;

import java.awt.Color;
import java.awt.Graphics2D;
import java.awt.Image;
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.Binarizer;
import com.google.zxing.BinaryBitmap;
import com.google.zxing.DecodeHintType;
import com.google.zxing.LuminanceSource;
import com.google.zxing.MultiFormatReader;
import com.google.zxing.MultiFormatWriter;
import com.google.zxing.NotFoundException;
import com.google.zxing.Result;
import com.google.zxing.WriterException;
import com.google.zxing.client.j2se.BufferedImageLuminanceSource;
import com.google.zxing.common.BitMatrix;
import com.google.zxing.common.HybridBinarizer;
import com.swetake.util.Qrcode;

public class QRCodeUtil {
    // 二维码颜色
    private static final int BLACK = 0xFF000000;
    // 二维码颜色
    private static final int WHITE = 0xFFFFFFFF;

    /**
     * <span style="font-size:18px;font-weight:blod;">ZXing 方式生成二维码</span>
     * 
     * @param text
     *            <a href="javascript:void();">二维码内容</a>
     * @param width
     *            二维码宽
     * @param height
     *            二维码高
     * @param outPutPath
     *            二维码生成保存路径
     * @param imageType
     *            二维码生成格式
     */
    public static void zxingCodeCreate(String text, int width, int height,
            String outPutPath, String imageType) {

        try {
            // 1、生成二维码
            BitMatrix encode = new MultiFormatWriter().encode(
                    new String(text.getBytes("GBK"), "ISO-8859-1"),
                    BarcodeFormat.QR_CODE, width, height);

            // 2、获取二维码宽高
            int codeWidth = encode.getWidth();
            int codeHeight = encode.getHeight();

            // 3、将二维码放入缓冲流
            BufferedImage image = new BufferedImage(codeWidth, codeHeight,
                    BufferedImage.TYPE_INT_RGB);
            for (int i = 0; i < codeWidth; i++) {
                for (int j = 0; j < codeHeight; j++) {
                    // 4、循环将二维码内容定入图片
                    image.setRGB(i, j, encode.get(i, j) ? BLACK : WHITE);
                }
            }
            File outPutImage = new File(outPutPath);
            // 如果图片不存在创建图片
            if (!outPutImage.exists())
                outPutImage.createNewFile();
            // 5、将二维码写入图片
            ImageIO.write(image, imageType, outPutImage);
            System.out.println("OK");
        } catch (WriterException e) {
            e.printStackTrace();
            System.out.println("二维码生成失败");
        } catch (IOException e) {
            e.printStackTrace();
            System.out.println("生成二维码图片失败");
        }
    }

    /**
     * <span style="font-size:18px;font-weight:blod;">二维码解析</span>
     * 
     * @param analyzePath
     *            二维码路径
     * @return
     * @throws IOException
     */
    @SuppressWarnings({ "rawtypes", "unchecked" })
    public static Result zxingCodeAnalyze(String analyzePath) throws Exception {
        MultiFormatReader formatReader = new MultiFormatReader();
        Result result = null;
        try {
            File file = new File(analyzePath);
            if (!file.exists()) {
                return null;
            }
            BufferedImage image = ImageIO.read(file);

            LuminanceSource source = new LuminanceSourceUtil(image);
            // LuminanceSource source = new BufferedImageLuminanceSource(image);

            Binarizer binarizer = new HybridBinarizer(source);
            BinaryBitmap binaryBitmap = new BinaryBitmap(binarizer);
            Hashtable hints = new Hashtable();
            hints.put(DecodeHintType.CHARACTER_SET, "gb2312");
            result = formatReader.decode(binaryBitmap, hints);
            String resultStr = result.getText();
            System.out.println("解码内容：" + resultStr);
        } catch (NotFoundException e) {
            e.printStackTrace();
        }
        return result;
    }

    /**
     * <span style="font-size:18px;font-weight:blod;">QRCode 方式生成二维码</span>
     * 
     * @param content
     *            二维码内容
     * @param imgPath
     *            二维码生成路径
     * @param version
     *            二维码版本
     * @param isFlag
     *            是否生成Logo图片 为NULL不生成
     */
    public static void QRCodeCreate(String content, String imgPath,
            int version, String logoPath) {

        try {
            Qrcode qrcodeHandler = new Qrcode();
            // 设置二维码排错率，可选L(7%) M(15%) Q(25%) H(30%)，排错率越高可存储的信息越少，但对二维码清晰度的要求越小
            qrcodeHandler.setQrcodeErrorCorrect('M');
            // N代表数字,A代表字符a-Z,B代表其他字符
            qrcodeHandler.setQrcodeEncodeMode('B');
            // 版本1为21*21矩阵，版本每增1，二维码的两个边长都增4；所以版本7为45*45的矩阵；最高版本为是40，是177*177的矩阵
            qrcodeHandler.setQrcodeVersion(version);
            // 根据版本计算尺寸
            int imgSize = 67 + 12 * (version - 1);
            byte[] contentBytes = content.getBytes("gb2312");
            BufferedImage bufImg = new BufferedImage(imgSize, imgSize,
                    BufferedImage.TYPE_INT_RGB);
            Graphics2D gs = bufImg.createGraphics();
            gs.setBackground(Color.WHITE);
            gs.clearRect(0, 0, imgSize, imgSize);
            // 设定图像颜色 > BLACK
            gs.setColor(Color.BLACK);
            // 设置偏移量 不设置可能导致解析出错
            int pixoff = 2;
            // 输出内容 > 二维码
            if (contentBytes.length > 0 && contentBytes.length < 130) {
                boolean[][] codeOut = qrcodeHandler.calQrcode(contentBytes);
                for (int i = 0; i < codeOut.length; i++) {
                    for (int j = 0; j < codeOut.length; j++) {
                        if (codeOut[j][i]) {
                            gs.fillRect(j * 3 + pixoff, i * 3 + pixoff, 3, 3);
                        }
                    }
                }
            } else {
                System.err.println("QRCode content bytes length = "
                        + contentBytes.length + " not in [ 0,130 ]. ");
            }
            // 判断是否需要添加logo图片
            if (logoPath != null) {
                File icon = new File(logoPath);
                if (icon.exists()) {
                    int width_4 = imgSize / 4;
                    int width_8 = width_4 / 2;
                    int height_4 = imgSize / 4;
                    int height_8 = height_4 / 2;
                    Image img = ImageIO.read(icon);
                    gs.drawImage(img, width_4 + width_8, height_4 + height_8,
                            width_4, height_4, null);
                    gs.dispose();
                    bufImg.flush();
                } else {
                    System.out.println("Error: login图片不存在！");
                }
            }
            gs.dispose();
            bufImg.flush();
            // 创建二维码文件
            File imgFile = new File(imgPath);
            if (!imgFile.exists())
                imgFile.createNewFile();
            // 根据生成图片获取图片
            String imgType = imgPath.substring(imgPath.lastIndexOf(".") + 1,
                    imgPath.length());
            // 生成二维码QRCode图片
            ImageIO.write(bufImg, imgType, imgFile);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}

引用jar分享包地址：https://pan.baidu.com/s/14A4PiAvuFqvnQc3qarSxJw