java生成条码图片、打印二维码、图片合并、图片加文字

淡淡的烟草味﹌ 2022-12-19 08:59 121阅读 0赞

通过java生成二维码图片，可以添加文字内容，非常方便实现打印。

import java.awt.Color;
    import java.awt.Font;
    import java.awt.FontMetrics;
    import java.awt.Graphics;
    import java.awt.Graphics2D;
    import java.awt.Rectangle;
    import java.awt.image.BufferedImage;
    import java.awt.print.PrinterJob;
    import java.io.File;
    import java.io.FileInputStream;
    import java.io.FileNotFoundException;
    import java.io.IOException;
    import java.io.InputStream;
    import java.nio.file.FileSystems;
    import java.nio.file.Path;
    import java.util.Hashtable;
    
    import javax.imageio.ImageIO;
    import javax.print.Doc;
    import javax.print.DocFlavor;
    import javax.print.DocPrintJob;
    import javax.print.PrintException;
    import javax.print.PrintService;
    import javax.print.SimpleDoc;
    import javax.print.attribute.HashPrintRequestAttributeSet;
    import javax.print.attribute.PrintRequestAttributeSet;
    import javax.print.attribute.standard.Copies;
    import javax.print.attribute.standard.MediaPrintableArea;
    import javax.print.attribute.standard.Sides;
    
    import com.google.zxing.BarcodeFormat;
    import com.google.zxing.EncodeHintType;
    import com.google.zxing.MultiFormatWriter;
    import com.google.zxing.WriterException;
    import com.google.zxing.client.j2se.MatrixToImageWriter;
    import com.google.zxing.common.BitMatrix;
    import com.google.zxing.qrcode.decoder.ErrorCorrectionLevel;
    
    public class PrintBarCode {
    	
    	private static final String QR_CODE_IMAGE_PATH = "E:\\MyQRCode.png";
    
    	public static void main(String[] args) throws Exception {
    		// TODO Auto-generated method stub
    		/**/
    		try {
    			String bacode="08000033%ABS 727%181125WG-211181130%55%170";
                createQRCode(bacode, 10, 10, QR_CODE_IMAGE_PATH);
                System.out.println("输出条码图片成功....!" );
                //createImage_pro(bacode, new Font("宋体", Font.PLAIN, 12),QR_CODE_IMAGE_PATH);
                //System.out.println("输出添加文字图片成功....!" );
       	     	String printerName = "HP LaserJet Professional M1213nf MFP";//打印机名包含字串
       	     	JPGPrint(QR_CODE_IMAGE_PATH,printerName);
            } catch (IOException e) {
                System.out.println("Could not generate QR Code, IOException :: " + e.getMessage());
            }
    		
    		//合并图片
    		//createImage("A1003", new Font("宋体", Font.PLAIN, 20), new File("e:/a.png"), 150, 32);
    		//mergerImage(QR_CODE_IMAGE_PATH,"e:/a.png");
    		/*
    		String bacode="08000033%ABS 727%181125WG-211181130%55%170";
    		createQRCode(bacode, 150, 150, QR_CODE_IMAGE_PATH);
    		createImage_pro(bacode, new Font("宋体", Font.PLAIN, 12),QR_CODE_IMAGE_PATH);
    		*/
    
    	}
    	
    	
    
    	// 传入文件和打印机名称
    	public static void JPGPrint(String filePath,String printerName) throws PrintException {
    		File file = new File(filePath);
    		if (file == null) {
    			System.err.println("缺少打印文件");
    		}
    		InputStream fis = null;
    		try {
    			// 设置打印格式，如果未确定类型，可选择autosense
    			// DocFlavor flavor = DocFlavor.INPUT_STREAM.JPEG;
    			DocFlavor flavor = DocFlavor.INPUT_STREAM.PNG;
    			// 设置打印参数
    			PrintRequestAttributeSet aset = new HashPrintRequestAttributeSet();
    			aset.add(new Copies(1)); //份数
    			//aset.add(MediaSize.ISO.A4); //纸张
    			// aset.add(Finishings.STAPLE);//装订
    			//aset.add(Sides.DUPLEX);//单双面
    			aset.add(Sides.ONE_SIDED);//单面
    			//打印区域,左边距，上边距，打印宽度，打印高度，单位毫米
    			aset.add(new MediaPrintableArea(1, 1, 10, 10, MediaPrintableArea.MM));
    			// 定位打印服务
    			PrintService printService = null;
    			if (printerName != null) {
    				//获得本台电脑连接的所有打印机
    				PrintService[] printServices = PrinterJob.lookupPrintServices();
    				if(printServices == null || printServices.length == 0) {
    					System.out.print("打印失败，未找到可用打印机，请检查。");
    					return ;
    				}
    				//匹配指定打印机
    				for (int i = 0;i < printServices.length; i++) {
    					System.out.println(printServices[i].getName());
    					if (printServices[i].getName().contains(printerName)) {
    						printService = printServices[i];
    						break;
    					}
    				}
    				if(printService==null){
    					System.out.print("打印失败，未找到名称为" + printerName + "的打印机，请检查。");
    					return ;
    				}
    			}
    			fis = new FileInputStream(file); // 构造待打印的文件流
    			Doc doc = new SimpleDoc(fis, flavor, null);
    			DocPrintJob job = printService.createPrintJob(); // 创建打印作业
    			job.print(doc, aset);
    		} catch (FileNotFoundException e1) {
    			e1.printStackTrace();
    		} finally {
    			// 关闭打印的文件流
    			if (fis != null) {
    				try {
    					fis.close();
    				} catch (IOException e) {
    					e.printStackTrace();
    				}
    			}
    		}
    	}
    	
    	/**
    	 * 根据内容生成二维码数据
    	 * @param content 二维码文字内容[为了信息安全性，一般都要先进行数据加密]
    	 * @param width 二维码照片宽度
    	 * @param height 二维码照片高度
    	 * @return
    	 * @throws IOException 
    	 */
    	public static void createQRCode(String content, int width, int height, String filePath) throws IOException{
    		Hashtable<EncodeHintType, Object> hints = new Hashtable<EncodeHintType, Object>();   
    		//设置字符编码
            hints.put(EncodeHintType.CHARACTER_SET, "utf-8");  
            // 指定纠错等级
    		hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.H);
            BitMatrix matrix = null;  
            try {  
                matrix = new MultiFormatWriter().encode(content, BarcodeFormat.QR_CODE, width, height, hints); 
                Path path = FileSystems.getDefault().getPath(filePath);
        		MatrixToImageWriter.writeToPath(matrix, "PNG", path);
            } catch (WriterException e) {  
                e.printStackTrace();  
            }
    	}
    	
    	/**
    	 * 合并两张图片
    	 * @param a
    	 * @param b
    	 * @return
    	 * @throws IOException 
    	 */
    	private static BufferedImage mergerImage(String pathA,String pathB) throws IOException {
    		BufferedImage a =ImageIO.read(new File(pathA));
    		BufferedImage b =ImageIO.read(new File(pathB));
    		int width=a.getWidth();
    		int height=a.getHeight()+b.getHeight();
    		BufferedImage bufferedImage=new BufferedImage(width,height,BufferedImage.TYPE_INT_RGB);
    		Graphics2D graphics=bufferedImage.createGraphics();
    		graphics.drawImage(a, 0,0, a.getWidth(), a.getHeight(),null);
    		graphics.drawImage(b, 0,a.getHeight(), b.getWidth(), b.getHeight(),null);
    		graphics.dispose();
    		
    		File outputfile = new File(QR_CODE_IMAGE_PATH); 
    		ImageIO.write(bufferedImage, "PNG", outputfile);
    		return bufferedImage;
    	}
    	
    	/**
         * 根据str,font的样式以及输出文件目录
         * @param str	字符串
         * @param font	字体
         * @param outFile	输出文件位置
         * @param width	宽度
         * @param height	高度
         * @throws Exception
         */
        public static void createImage(String str, Font font, File outFile,
                                       Integer width, Integer height) throws Exception {
            // 创建图片
            BufferedImage image = new BufferedImage(width, height,
                    BufferedImage.TYPE_INT_BGR);
            Graphics g = image.getGraphics();
            g.setClip(0, 0, width, height);
            g.setColor(Color.WHITE);
            // 先用黑色填充整张图片,也就是背景
            g.fillRect(0, 0, width, height);
            // 在换成红色
            g.setColor(Color.BLACK);
            // 设置画笔字体
            g.setFont(font);
            /** 用于获得垂直居中y */
            Rectangle clip = g.getClipBounds();
            FontMetrics fm = g.getFontMetrics(font);
            int ascent = fm.getAscent();
            int descent = fm.getDescent();
            int y = (clip.height - (ascent + descent)) / 2 + ascent;
            // 256 340 0 680
            g.drawString(str, 10, y); //字符串，开始位置，结束位置
            /*
            for (int i = 0; i < 6; i++) {
                // 画出字符串
                g.drawString(str, i * 680, y);
            }
            */
            g.dispose();
            // 输出png图片
            ImageIO.write(image, "png", outFile);
        }
        
        public static void createImage_pro(String str, Font font, String pathA) throws Exception {
    		// 创建图片
    		BufferedImage image = ImageIO.read(new File(pathA));
    		Graphics g = image.getGraphics();
    		g.setColor(Color.BLACK);
    		// 设置画笔字体
    		g.setFont(font);
    		g.drawString(str, 5, 145); //字符串，开始位置，结束位置
    		g.dispose();
    		File outFile = new File(pathA); 
    		// 输出png图片
    		ImageIO.write(image, "png", outFile);
    	}
    
    	
    }