package org.jeecg.modules.tms.utils;
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import com.google.zxing.BarcodeFormat;
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import com.google.zxing.EncodeHintType;
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import com.google.zxing.client.j2se.MatrixToImageWriter;
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import com.google.zxing.common.BitMatrix;
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import com.google.zxing.qrcode.QRCodeWriter;
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import javax.print.*;
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import javax.print.attribute.HashPrintRequestAttributeSet;
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import javax.print.attribute.PrintRequestAttributeSet;
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import javax.print.attribute.standard.Copies;
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import javax.swing.*;
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import java.awt.*;
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import java.awt.image.BufferedImage;
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import java.awt.print.*;
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import java.io.ByteArrayInputStream;
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import java.io.ByteArrayOutputStream;
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import java.util.HashMap;
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import java.util.Map;
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public class QrCodeUtils {
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/**
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* 生成二维码图片
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* @param content 二维码内容
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* @param width 图片宽度
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* @param height 图片高度
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* @return BufferedImage 对象
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*/
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public static BufferedImage generateQrCode(String content, int width, int height) {
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try {
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Map<EncodeHintType, Object> hints = new HashMap<>();
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hints.put(EncodeHintType.CHARACTER_SET, "UTF-8");
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QRCodeWriter writer = new QRCodeWriter();
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BitMatrix bitMatrix = writer.encode(content, BarcodeFormat.QR_CODE, width, height, hints);
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return MatrixToImageWriter.toBufferedImage(bitMatrix);
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} catch (Exception e) {
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throw new RuntimeException("生成二维码失败", e);
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}
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}
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/**
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* 打印二维码
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*/
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public static void printBarcode(final BufferedImage image) {
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PrinterJob job = PrinterJob.getPrinterJob();
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// 设置打印页面
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PageFormat pf = job.defaultPage();
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Paper paper = pf.getPaper();
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// 设置纸张大小匹配条形码图像
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paper.setSize(image.getWidth(), image.getHeight() + 50);
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paper.setImageableArea(0, 0, image.getWidth(), image.getHeight() + 50);
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pf.setPaper(paper);
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// 设置打印内容
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job.setPrintable(new Printable() {
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@Override
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public int print(Graphics graphics, PageFormat pageFormat, int pageIndex) {
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if (pageIndex > 0) {
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return NO_SUCH_PAGE;
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}
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Graphics2D g2d = (Graphics2D) graphics;
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g2d.translate(pageFormat.getImageableX(), pageFormat.getImageableY());
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g2d.drawImage(image, 0, 0, null);
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return PAGE_EXISTS;
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}
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}, pf);
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// 显示打印对话框
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if (job.printDialog()) {
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try {
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job.print();
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JOptionPane.showMessageDialog(null, "打印任务已发送到打印机");
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} catch (PrinterException e) {
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JOptionPane.showMessageDialog(null, "打印失败: " + e.getMessage());
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e.printStackTrace();
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}
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}
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}
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/**
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* 默认打印机打印二维码
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*/
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private static void printBarcode2(BufferedImage image) throws Exception {
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// 1. 将BufferedImage转换为字节数组
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ByteArrayOutputStream baos = new ByteArrayOutputStream();
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javax.imageio.ImageIO.write(image, "png", baos);
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byte[] imageData = baos.toByteArray();
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// 2. 查找打印服务
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PrintService[] services = PrintServiceLookup.lookupPrintServices(null, null);
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if (services.length == 0) {
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throw new Exception("没有找到可用的打印机");
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}
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// 3. 选择默认打印机(也可以让用户选择)
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PrintService defaultPrinter = PrintServiceLookup.lookupDefaultPrintService();
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if (defaultPrinter == null) {
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defaultPrinter = services[0]; // 使用第一个找到的打印机
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}
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// 4. 创建打印作业
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DocPrintJob job = defaultPrinter.createPrintJob();
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// 5. 设置打印属性
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PrintRequestAttributeSet attributes = new HashPrintRequestAttributeSet();
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attributes.add(new Copies(1)); // 打印份数
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// 6. 创建打印文档
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DocFlavor flavor = DocFlavor.INPUT_STREAM.PNG;
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Doc doc = new SimpleDoc(new ByteArrayInputStream(imageData), flavor, null);
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// 7. 执行打印
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job.print(doc, attributes);
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}
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}
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