java生成带logo的二维码和下方带内容的条形码

一、导入zxing包

        
        
            com.google.zxing
            core
            3.5.2
        
        
            com.google.zxing
            javase
            3.5.2
        
        

二、生成带logo的二维码工具类

package com.example.demo.utils;

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;

import javax.imageio.ImageIO;
import java.awt.*;
import java.awt.geom.RoundRectangle2D;
import java.awt.image.BufferedImage;
import java.io.File;
import java.util.Hashtable;

public class QrCodeUtil {
    //编码格式,采用utf-8
    private static final String UNICODE = "utf-8";
    //图片格式
    private static final String FORMAT = "JPG";
    //二维码宽度像素pixels数量
    private static final int QRCODE_WIDTH = 512;
    //二维码高度像素pixels数量
    private static final int QRCODE_HEIGHT = 512;
    //LOGO宽度像素pixels数量
    private static final int LOGO_WIDTH = 128;
    //LOGO高度像素pixels数量
    private static final int LOGO_HEIGHT = 128;

    /**
     * 生成二维码图片
     * @param content 二维码内容
     * @param logoPath logo图片地址
     * @return
     * @throws Exception
     */
    private static BufferedImage createQrCode(String content, String logoPath) throws Exception {
        Hashtable hints = new Hashtable();
        hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.H);
        hints.put(EncodeHintType.CHARACTER_SET, UNICODE);
        hints.put(EncodeHintType.MARGIN, 1);

        BitMatrix bitMatrix = new MultiFormatWriter().encode(content,
                BarcodeFormat.QR_CODE, QRCODE_WIDTH, QRCODE_HEIGHT,
                hints);
        int width = bitMatrix.getWidth();
        int height = bitMatrix.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, bitMatrix.get(x, y) ? 0xFF000000 : 0xFFFFFFFF);
            }
        }

        if (logoPath == null || "".equals(logoPath)) {
            return image;
        }

        // 插入图片
        insertLogo(image, logoPath);
        return image;
    }

    //在图片上插入LOGO
    //source 二维码图片内容
    //logoPath LOGO图片地址
    private static void insertLogo(BufferedImage source, String logoPath) throws Exception {
        File file = new File(logoPath);
        if (!file.exists()) {
            throw new Exception("logo file not found.");
        }
        Image src = ImageIO.read(new File(logoPath));
        int width = src.getWidth(null);
        int height = src.getHeight(null);
        if (width > LOGO_WIDTH) {
            width = LOGO_WIDTH;
        }
        if (height > LOGO_HEIGHT) {
            height = LOGO_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();
        setGraphics2D(graph);
        int x = (QRCODE_WIDTH - width) / 2;
        int y = (QRCODE_HEIGHT - 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();
    }

    /**
     * 设置 Graphics2D 属性 （抗锯齿）
     *
     * @param g2d Graphics2D提供对几何形状、坐标转换、颜色管理和文本布局更为复杂的控制
     */
    private static void setGraphics2D(Graphics2D g2d) {
        g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
        g2d.setRenderingHint(RenderingHints.KEY_STROKE_CONTROL, RenderingHints.VALUE_STROKE_DEFAULT);
        Stroke s = new BasicStroke(1, BasicStroke.CAP_ROUND, BasicStroke.JOIN_MITER);
        g2d.setStroke(s);
    }

    public static void main(String[] args) {
        try {
            ImageIO.write(createQrCode("www.gnetek.com", "D:/logo.png"), FORMAT, new File("D:/bbb.jpg"));
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}

三、生成带内容的条形码工具类

package com.example.demo.utils;

import com.google.zxing.BarcodeFormat;
import com.google.zxing.EncodeHintType;
import com.google.zxing.client.j2se.MatrixToImageWriter;
import com.google.zxing.common.BitMatrix;
import com.google.zxing.oned.Code128Writer;
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.util.Hashtable;

public class BarCodeUtil {
    private static final String CHARSET = "utf-8";
    private static final String FORMAT = "JPG";
    /**
     * 条形码宽度
     */
    private static final int WIDTH = 512;
    /**
     * 条形码高度
     */
    private static final int HEIGHT = 128;

    /**
     * 字体大小
     */
    private static final int FONT_SIZE = 32;

    /**
     * 加文字 条形码
     */
    private static final int WORD_HEIGHT = HEIGHT + FONT_SIZE;

    public static BufferedImage createBarCode(String code){
        Hashtable hints = new Hashtable<>();
        hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.H);
        hints.put(EncodeHintType.CHARACTER_SET, CHARSET);
        hints.put(EncodeHintType.MARGIN, 1);

        Code128Writer writer = new Code128Writer();
        // 编码内容, 编码类型, 宽度, 高度, 设置参数
        BitMatrix bitMatrix = writer.encode(code, BarcodeFormat.CODE_128, WIDTH, HEIGHT, hints);
        BufferedImage image = MatrixToImageWriter.toBufferedImage(bitMatrix);

        BufferedImage outImage = new BufferedImage(WIDTH, WORD_HEIGHT, BufferedImage.TYPE_INT_RGB);
        Graphics2D g2d = outImage.createGraphics();
        // 抗锯齿
        setGraphics2D(g2d);
        // 设置白色
        setColorWhite(g2d);
        // 画条形码到新的面板
        g2d.drawImage(image, 0, 5, image.getWidth(), image.getHeight(), null);
        // 画文字到新的面板
        g2d.setColor(Color.BLACK);
        // 字体、字型、字号
        g2d.setFont(new Font("黑体", Font.PLAIN, FONT_SIZE));
        //设置条形码下面的文本的纵坐标
        int wordStartY = HEIGHT + 26;
        String[] split = code.split("");
        int len = split.length;
        int stepWidth = WIDTH / len;
        for (int i = 0; i < len; i++) {
            int x = stepWidth*(i+1);
            g2d.drawString(split[i], x, wordStartY);
        }
        outImage.flush();
        return outImage;
    }

    /**
     * 设置 Graphics2D 属性 （抗锯齿）
     *
     * @param g2d Graphics2D提供对几何形状、坐标转换、颜色管理和文本布局更为复杂的控制
     */
    private static void setGraphics2D(Graphics2D g2d) {
        g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
        g2d.setRenderingHint(RenderingHints.KEY_STROKE_CONTROL, RenderingHints.VALUE_STROKE_DEFAULT);
        Stroke s = new BasicStroke(1, BasicStroke.CAP_ROUND, BasicStroke.JOIN_MITER);
        g2d.setStroke(s);
    }

    /**
     * 设置背景为白色
     *
     * @param g2d Graphics2D提供对几何形状、坐标转换、颜色管理和文本布局更为复杂的控制
     */
    private static void setColorWhite(Graphics2D g2d) {
        g2d.setColor(Color.WHITE);
        // 填充整个屏幕
        g2d.fillRect(0, 0, 600, 600);
        // 设置笔刷
        g2d.setColor(Color.BLACK);
    }

    public static void main(String[] args) {
        try {
            ImageIO.write(createBarCode("9111119911"), FORMAT, new File("D:/aaa.jpg"));
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}