(二维码处理--2)二维码图片和海报背景进行合成(包含生成二维码)

maven依赖 

        
            com.google.zxing
            core
            3.4.0
        

工具类：

import java.awt.*;
import java.awt.geom.Ellipse2D;
import java.awt.geom.RoundRectangle2D;
import java.awt.image.BufferedImage;
import java.io.*;
import java.util.Hashtable;
import java.util.Random;
import javax.imageio.ImageIO;
import java.net.HttpURLConnection;
import java.net.URL;
import com.google.zxing.BarcodeFormat;
import com.google.zxing.EncodeHintType;
import com.google.zxing.MultiFormatWriter;
import com.google.zxing.common.BitMatrix;
import com.google.zxing.qrcode.decoder.ErrorCorrectionLevel;

/**
 * 提供二维码生成和解析工具类
 * @author Administrator
 *
 */
public class QRCodeUtil {

    private static final String CHARSET = "utf-8";
    private static final String FORMAT_NAME = "JPG";
    private static final int QRCODE_SIZE = 150; // 二维码尺寸，宽度和高度均是300
    private static final int WIDTH = 50;  //LOGO宽度
    private static final int HEIGHT = 50; //LOGO高度
    /**
     * 生成二维码的方法
     * @param content 目标url
     * @param imgPath logo图片地址
     * @param needCompress 是否压缩logo
     * @return 二维码图片
     * @throws Exception
     */
    private static BufferedImage createImage(String content, String imgPath,boolean needCompress) throws Exception {
        Hashtable hints = new Hashtable();
        hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.H);//指定二维码的纠错等级为高级
        hints.put(EncodeHintType.CHARACTER_SET, CHARSET);//指定字符编码为“utf-8”
        hints.put(EncodeHintType.MARGIN, 1); //设置图片的边距
        //参数1：内容，目标url,参数2：固定写法，参数3：二维码的宽度，参数4：二维码的高度，参数5：二维码属性设置
        BitMatrix bitMatrix = new MultiFormatWriter().encode(content,BarcodeFormat.QR_CODE, QRCODE_SIZE, QRCODE_SIZE, hints);
        int width = bitMatrix.getWidth();//二维码的宽度
        int height = bitMatrix.getHeight();//二维码的高度
        BufferedImage image = new BufferedImage(width, height,BufferedImage.TYPE_INT_RGB);//生成的二维码image
        for (int x = 0; x < width; x++) {
            for (int y = 0; y < height; y++) {
                image.setRGB(x, y, bitMatrix.get(x, y) ? 0xFF000000: 0xFFFFFFFF);
            }
        }
        if (imgPath == null || "".equals(imgPath)) {//logo图片地址为null或空时
            return image; //只返回二维码图片，无中间的logo
        }
        // 插入logo图片  参数1：二维码图片，参数2：logo图片地址，参数3：压缩图片
        QRCodeUtil.insertImage(image, imgPath, needCompress);
        return image;
    }
    /**
     * 插入logo图片
     * @param source 二维码图片
     * @param imgPath LOGO图片地址
     * @param needCompress 是否压缩
     * @throws Exception
     */
    private static void insertImage(BufferedImage source, String imgPath,boolean needCompress) throws Exception {

        File file = new File(imgPath);//logo图片地址放入文件
        Image src;
        if (!file.exists()) {
            //通过网络路径获取
            InputStream  inputStream=getImageStream(imgPath);
            src = ImageIO.read(inputStream);
        }else {
            //本地路径获取
            src = ImageIO.read(new File(imgPath));
        }
        int width = src.getWidth(null);
        int height = src.getHeight(null);
        if (needCompress) { // 压缩LOGO
            if (width > WIDTH) { //如果上传logo宽 >60
                width = WIDTH;
            }
            if (height > HEIGHT) { //如果上传logo高>60
                height = HEIGHT;
            }
            Image image = src.getScaledInstance(width, height,Image.SCALE_SMOOTH);
            BufferedImage tag = new BufferedImage(width, height,BufferedImage.TYPE_INT_RGB);
            Graphics g = tag.getGraphics();
            g.drawImage(image, 0, 0, null); // 绘制缩小后的图
            g.dispose();
            src = image;
        }
        // 插入LOGO
        Graphics2D graph = source.createGraphics();
        int x = (QRCODE_SIZE - width) / 2;
        int y = (QRCODE_SIZE - height) / 2;
        graph.drawImage(src, x, y, width, height, null);
        Shape shape = new RoundRectangle2D.Float(x, y, width, width, 6, 6);
        graph.setStroke(new BasicStroke(3f));
        graph.draw(shape);
        graph.dispose();
    }
    /**
     * 生成二维码(内嵌LOGO)
     * @param content  内容
     * @param imgPath  logo地址
     * @param destPath 存放目录
     * @param needCompress 是否压缩logo
     * @throws Exception
     */
    public static void encode(String content, String imgPath, String destPath, boolean needCompress) throws Exception {
        BufferedImage image = QRCodeUtil.createImage(content, imgPath,needCompress); //生成二维码
        mkdirs(destPath);
        String file = new Random().nextInt(99999) + ".jpg";
        ImageIO.write(image, FORMAT_NAME, new File(destPath + "/" + file));
    }
    /**
     * 当文件夹不存在时，mkdirs会自动创建多层目录，区别于mkdir．(mkdir如果父目录不存在则会抛出异常)
     * @param destPath 存放目录
     */
    public static void mkdirs(String destPath) {
        File file = new File(destPath);
        if (!file.exists() && !file.isDirectory()) {
            file.mkdirs();
        }
    }


    /**
     * 生成二维码(内嵌LOGO)
     *
     * @param content      内容
     * @param imgPath      LOGO地址
     * @param output       输出流
     * @param needCompress 是否压缩LOGO
     * @throws Exception
     */
    public static void encode(String content, String imgPath,OutputStream output, boolean needCompress) throws Exception {
        BufferedImage image = QRCodeUtil.createImage(content, imgPath,needCompress);
        ImageIO.write(image, FORMAT_NAME, output);
    }
    /**
     * 生成二维码
     *
     * @param content 内容
     * @param output  输出流
     * @throws Exception
     */
    public static void encode(String content, OutputStream output)throws Exception {
        QRCodeUtil.encode(content, null, output, false);
    }


    /**
     * 获取网络图片流
     *
     * @param url
     * @return
     */
    public static InputStream getImageStream(String url) {
        try {
            HttpURLConnection connection = (HttpURLConnection) new URL(url).openConnection();
            connection.setReadTimeout(5000);
            connection.setConnectTimeout(5000);
            connection.setRequestMethod("GET");
            if (connection.getResponseCode() == HttpURLConnection.HTTP_OK) {
                InputStream inputStream = connection.getInputStream();
                return inputStream;
            }
        } catch (IOException e) {
            System.out.println("获取网络图片出现异常，图片路径为：" + url);
            e.printStackTrace();
        }
        return null;
    }


    /**
     *将头像,二维码和海报合成
     * @throws IOException
     */
    public static void drawImage() throws IOException {
        //海报图
        String backgroundImageUrl = "http://img1.juimg.com/171010/330841-1G01000050879.jpg";
        //二维码
        String qrCodeImageUrl = "https://timgsa.baidu.com/timg?image&quality=80&size=b9999_10000&sec=1553504957130&di=02fae20a5c0f885d52299b2b1d682c86&imgtype=0&src=http%3A%2F%2Fimg.atobo.com%2FProductImg%2FEWM%2FUWeb%2F3%2F2%2F1%2F3%2F061%2F3213061%2F1.gif";
        //头像
        String headUrl = "http://pic.51yuansu.com/pic3/cover/00/63/25/589bdedf5475d_610.jpg";

        BufferedImage bgBufImage = ImageIO.read(new URL(backgroundImageUrl));
        Graphics2D bgBufImageGraphics = bgBufImage.createGraphics();

        BufferedImage qrCodeImage = ImageIO.read(new URL(qrCodeImageUrl));
        BufferedImage headImage = ImageIO.read(new URL(headUrl));
        //设置圆形图片
        BufferedImage roundHeadImg = new BufferedImage(headImage.getWidth(), headImage.getHeight(), BufferedImage.TYPE_INT_RGB);

        Graphics2D roundHeadGraphics = roundHeadImg.createGraphics();
        Ellipse2D.Double shape = new Ellipse2D.Double(0, 0, roundHeadImg.getWidth(), roundHeadImg.getHeight());
        roundHeadGraphics.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
        roundHeadImg = roundHeadGraphics.getDeviceConfiguration().createCompatibleImage(headImage.getWidth(), headImage.getHeight(),
                Transparency.TRANSLUCENT);
        roundHeadGraphics = roundHeadImg.createGraphics();
        // 使用 setRenderingHint 设置抗锯齿
        roundHeadGraphics.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
        roundHeadGraphics.setClip(shape);
        roundHeadGraphics.drawImage(headImage, 0, 0, null);
        roundHeadGraphics.dispose();

        bgBufImageGraphics.drawImage(qrCodeImage,390, 200, qrCodeImage.getWidth(), qrCodeImage.getHeight(), null);
        //bgBufImageGraphics.drawImage(roundHeadImg, 50, 100, HEAD_URL_WIDTH, HEAD_URL_HEIGHT, null);
        bgBufImageGraphics.dispose();
        ImageIO.write(bgBufImage, "png", new File("C:\\Users\\Public\\Desktop\\demo2.png"));
        System.out.printf("生成图片完成");

    }

    /**
     *将二维码和海报合成一张图片
     * @throws IOException
     */
    public static void drawImage1(String backgroundImageUrl,BufferedImage qrCodeImage,String putImgPoster) throws IOException {
        //这里对方法进行了修改直接把 BufferedImage qrCodeImage传入进来方便处理  也可以传入 String qrCodeImageUrl  图片网络路径
        BufferedImage bgBufImage = ImageIO.read(new URL(backgroundImageUrl));
        Graphics2D bgBufImageGraphics = bgBufImage.createGraphics();
        //BufferedImage qrCodeImage = ImageIO.read(new URL(qrCodeImageUrl));
        bgBufImageGraphics.drawImage(qrCodeImage,390, 200, qrCodeImage.getWidth(), qrCodeImage.getHeight(), null);
        bgBufImageGraphics.dispose();
        ImageIO.write(bgBufImage, "png", new File(putImgPoster));
        System.out.printf("生成图片完成");
    }


    public static void main(String[] args) throws Exception{
        BufferedImage  ti=createImage("xh6lSOzYdIMVanArR9AY0","https://b-ssl.duitang.com/uploads/item/201706/27/20170627012435_mJLiX.thumb.700_0.jpeg",true);
        //输出文件
        //File file = new File("E:\\123.jpg");
        //ImageIO.write(ti, "jpg", file);
        //drawImage();
        drawImage1("http://img1.juimg.com/171010/330841-1G01000050879.jpg",ti,"C:\\Users\\Public\\Desktop\\dome.jpg");
    }


}

展示效果：