java生成带logo的二维码并且可以嵌套背景图片

一、效果图

二、代码

• 使用的是zxing所以需要2个依赖,下面是pom.xml的配置:

<properties>
        <zxing.version>3.3.1</zxing.version>
        <zxing.javase.version>3.1.0</zxing.javase.version>
    </properties>
      <!--QrCode-->
        <dependency>
            <groupId>com.google.zxing</groupId>
            <artifactId>core</artifactId>
            <version>${zxing.version}</version>
        </dependency>

        <dependency>
            <groupId>com.google.zxing</groupId>
            <artifactId>javase</artifactId>
            <version>${zxing.javase.version}</version>
        </dependency>

• 完整代码ZXingBackGroundUtils.java:

package com.zzq.test.zxing;


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;
import com.google.zxing.qrcode.decoder.ErrorCorrectionLevel;

import javax.imageio.ImageIO;
import java.awt.*;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import java.net.URL;
import java.util.HashMap;
import java.util.Map;
import java.util.Objects;


/**
  依赖的jar
   <properties>
        <zxing.version>3.3.1</zxing.version>
        <zxing.javase.version>3.1.0</zxing.javase.version>
    </properties>
      <!--QrCode-->
        <dependency>
            <groupId>com.google.zxing</groupId>
            <artifactId>core</artifactId>
            <version>${zxing.version}</version>
        </dependency>

        <dependency>
            <groupId>com.google.zxing</groupId>
            <artifactId>javase</artifactId>
            <version>${zxing.javase.version}</version>
        </dependency>
 * */
/**
 * @author Zhou Zhong Qing
 * @Title: ${file_name}
 * @Package ${package_name}
 * @Description: 合成图片 ---- 生成二维码和嵌套背景图片
 * @date 2018/10/10 14:44
 */

public class ZXingBackGroundUtils {

    private static final int QRCOLOR = 0xFF000000; // 默认是黑色
    private static final int BGWHITE = 0xFFFFFFFF; // 背景颜色

    private static final int WIDTH = 200; // 二维码宽
    private static final int HEIGHT = 200; // 二维码高

    // 用于设置QR二维码参数
    private static Map<EncodeHintType, Object> hints = new HashMap<EncodeHintType, Object>() {
        private static final long serialVersionUID = 1L;

        {
            put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.H);// 设置QR二维码的纠错级别（H为最高级别）具体级别信息
            put(EncodeHintType.CHARACTER_SET, "utf-8");// 设置编码方式
            put(EncodeHintType.MARGIN, 0);
        }
    };


    // 生成带logo的二维码图片
    /***
     *@param logoFile  logo图地址
     * @param codeFile  二维码生成地址
     * @param qrUrl 扫描二维码方位地址
     * */
    public static void drawLogoQRCode(File logoFile, File codeFile, String qrUrl) {
        try {
            MultiFormatWriter multiFormatWriter = new MultiFormatWriter();
            // 参数顺序分别为：编码内容，编码类型，生成图片宽度，生成图片高度，设置参数
            BitMatrix bm = multiFormatWriter.encode(qrUrl, BarcodeFormat.QR_CODE, WIDTH, HEIGHT, hints);
            BufferedImage image = new BufferedImage(WIDTH, HEIGHT, BufferedImage.TYPE_INT_RGB);

            // 开始利用二维码数据创建Bitmap图片，分别设为黑（0xFFFFFFFF）白（0xFF000000）两色
            for (int x = 0; x < WIDTH; x++) {
                for (int y = 0; y < HEIGHT; y++) {
                    image.setRGB(x, y, bm.get(x, y) ? QRCOLOR : BGWHITE);
                }
            }

            int width = image.getWidth();
            int height = image.getHeight();
            if (Objects.nonNull(logoFile) && logoFile.exists()) {
                // 构建绘图对象
                Graphics2D g = image.createGraphics();
                // 读取Logo图片
                BufferedImage logo = ImageIO.read(logoFile);
                // 开始绘制logo图片
                g.drawImage(logo, width * 2 / 5, height * 2 / 5, width * 2 / 10, height * 2 / 10, null);
                g.dispose();
                logo.flush();
            }

            image.flush();

            ImageIO.write(image, "png", codeFile); // TODO
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    public static void main(String[] args) throws  Exception {
        //头像logo
        File logoFile = new File("C://Users//Administrator//Desktop//2.jpg");
        //生成二维码地址
        File QrCodeFile = new File("C://Users//Administrator//Desktop//test.jpg");
        String url = "https://www.baidu.com/";
       drawLogoQRCode(logoFile, QrCodeFile, url);

        mergeImage("C://Users//Administrator//Desktop//1.jpg", "C://Users//Administrator//Desktop//test.jpg", "C://Users//Administrator//Desktop//test2.jpg","63", "163");
    }



        /***
         * 二维码嵌套背景图的方法
         *@param bigPath 背景图 - 可传网络地址
         *@param smallPath 二维码地址 - 可传网络地址
         *@param newFilePath 生成新图片的地址
         * @param  x 二维码x坐标
         *  @param  y 二维码y坐标
         * */
        public static void mergeImage(String bigPath, String smallPath, String newFilePath,String x, String y) throws IOException {

            try {
                BufferedImage small;
                BufferedImage big;
                if (bigPath.contains("http://") || bigPath.contains("https://")) {
                    URL url = new URL(bigPath);
                    big = ImageIO.read(url);
                } else {
                    big = ImageIO.read(new File(bigPath));
                }


                if (smallPath.contains("http://") || smallPath.contains("https://")) {

                    URL url = new URL(smallPath);
                    small = ImageIO.read(url);
                } else {
                    small = ImageIO.read(new File(smallPath));
                }

                Graphics2D g = big.createGraphics();

                float fx = Float.parseFloat(x);
                float fy = Float.parseFloat(y);
                int x_i = (int) fx;
                int y_i = (int) fy;
                g.drawImage(small, x_i, y_i, small.getWidth(), small.getHeight(), null);
                g.dispose();
                ImageIO.write(big, "png", new File(newFilePath));

            } catch (Exception e) {
                e.printStackTrace();
            }

        }

}

• 主要2个方法:
  • 1、drawLogoQRCode生成二维码
  • 2、mergeImage给二维码嵌套背景合并图片