java生成二维码并融合模板工具类

二维码融合模板

二维码融合图片

import java.awt.AlphaComposite;
import java.awt.Graphics2D;
import java.awt.Image;
import java.awt.Toolkit;
import java.awt.image.BufferedImage;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.IOException;
import java.util.Hashtable;
import javax.imageio.ImageIO;
import org.springframework.beans.factory.annotation.Autowired;
import com.google.zxing.BarcodeFormat;
import com.google.zxing.EncodeHintType;
import com.google.zxing.MultiFormatWriter;
import com.google.zxing.common.BitMatrix;
import com.skjd.service.system.driver.DriverService;

public class ImageAndQRcode {

    @Autowired
    DriverService driverService;

    private static final int BLACK = 0xFF000000;

    private static final int WHITE = 0xFFFFFFFF;

    ImageAndQRcode() {

    }

    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 = toBufferedImage(matrix);

        if (!ImageIO.write(image, format, file)) {
            throw new IOException("Could not write an image of format " + format + " to " + file);
        }
    }

         /**

         * @Title: 构造图片

         * @Description: 生成水印并返回java.awt.image.BufferedImage

         * @param file源文件(图片)

         * @param waterFile水印文件(图片)

         * @param x距离右下角的X偏移量

         * @param y 距离右下角的Y偏移量

         * @param alpha 透明度, 选择值从0.0~1.0: 完全透明~完全不透明

         * @return BufferedImage

         * @throws IOException

         */
    private static BufferedImage watermark(File file, File waterFile, int x, int y, float alpha) throws IOException {

        Image src=Toolkit.getDefaultToolkit().getImage(file.getPath());
        BufferedImage image=BufferedImageBuilder.toBufferedImage(src);

        Image src1=Toolkit.getDefaultToolkit().getImage(waterFile.getPath());
        BufferedImage image1=BufferedImageBuilder.toBufferedImage(src1);

        Graphics2D g2d = image.createGraphics();

        int waterImgWidth = image1.getWidth();// 获取层图的宽度

        int waterImgHeight = image1.getHeight();// 获取层图的高度

        g2d.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_ATOP, alpha));

        g2d.drawImage(image1, x, y, waterImgWidth, waterImgHeight, null);

        g2d.dispose();// 释放图形上下文使用的系统资源

        return image;
    }

     /**
     * 输出水印图片
     * @param buffImg 图像加水印之后的BufferedImage对象
     * @param savePath 图像加水印之后的保存路径
     */
    private void generateWaterFile(BufferedImage buffImg, String savePath) {

        int temp = savePath.lastIndexOf(".") + 1;

        try {

            ImageIO.write(buffImg, savePath.substring(temp), new File(savePath));

        } catch (IOException e1) {

            e1.printStackTrace();
        }

    }

          /**
         * 
         * @param text 二维码内容
         * @param width 二维码图片宽度
         * @param height 二维码图片高度
         * @param format 二维码的图片格式
         * @param sourceFilePath 底层图片路径
         * @param waterFilePath 二维码路径
         * @param saveFilePath 合成图片路径
         * @param maginx  二维码距离底图x轴距离
         * @param maginy  二维码距离底图y轴距离
         * @throws Exception
        
          * @return */
    public static byte[] addImageQRcode(String text, int width, int height, String format, String sourceFilePath,
            String waterFilePath, String saveFilePath, int maginx, int maginy) throws Exception {

        Hashtable<EncodeHintType, String> hints = new Hashtable<EncodeHintType, String>();

        hints.put(EncodeHintType.CHARACTER_SET, "utf-8"); // 内容所使用字符集编码

        BitMatrix bitMatrix = new MultiFormatWriter().encode(text,

                BarcodeFormat.QR_CODE, width, height, hints);

        File outputFile = new File(waterFilePath);

        ImageAndQRcode.writeToFile(bitMatrix, format, outputFile);

        ImageAndQRcode newImageUtils = new ImageAndQRcode();

        BufferedImage buffImg = ImageAndQRcode.watermark(new File(sourceFilePath), new File(waterFilePath), maginx,
                maginy, 1.0f);

        newImageUtils.generateWaterFile(buffImg, saveFilePath);

        ByteArrayOutputStream os = new ByteArrayOutputStream();
        boolean flag = ImageIO.write(buffImg, "jpg", os);
        byte[] byteArray = os.toByteArray();
        return byteArray;

    }

    public static void main(String[] args) throws IOException {

        ImageAndQRcode add = new ImageAndQRcode();

             /**
             * 
             * @param text 二维码内容
             * @param width 二维码图片宽度
             * @param height 二维码图片高度
             * @param format 二维码的图片格式
             * @param sourceFilePath 底层图片路径
             * @param waterFilePath 二维码路径
             * @param saveFilePath 合成图片路径
             * @param maginx  二维码距离底图x轴距离
             * @param maginy  二维码距离底图y轴距离
             * @throws Exception
             */
        try {

            add.addImageQRcode("http://www.baidu.com", 300, 300, "jpg",
                    "C:/Users/admin/Desktop/1.png",
                    "C:/Users/admin/Desktop/new.jpg",
                    "C:/Users/admin/Desktop/3.png",
                    250, 250);

        } catch (Exception e) {

            e.printStackTrace();

        }
    }
}

调用案例

    public static byte[] t4(HttpServletRequest request,String t,String id){
        String realPath = "";
        if("1".equals(t)){
        realPath = request.getSession().getServletContext().getRealPath("/static/images/1.png").replaceAll("\\\\", "/");
        }else{
            realPath= request.getSession().getServletContext().getRealPath("/static/images/2.png").replaceAll("\\\\", "/");
        }
        String uuid1 = UuidUtils.getUUID();
        String uuid3 = UuidUtils.getUUID();
        String realPath3= request.getSession().getServletContext().getRealPath("/static/images/)"+uuid1+"(.jpg").replaceAll("\\\\", "/");
        String realPath4 = request.getSession().getServletContext().getRealPath("/static/images/)"+uuid3+"(.jpg").replaceAll("\\\\", "/");
        String contentz = "www.skjiadao.com?id="+id+"&type="+t;

        byte[] addImageQRcode1;
        try {
            addImageQRcode1 = ImageAndQRcode.addImageQRcode(contentz, 300, 300, "jpg",
                    realPath,
                    realPath4,
                    realPath3,
                    250,
                    250);
        } catch (Exception e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
            return new byte[1];
        }
        return addImageQRcode1;

    }