Java实现添加条形码到PDF表格的方法详解

<repositories>
        <repository>
            <id>com.e-iceblue</id>
            <name>e-iceblue</name>
            <url>https://repo.e-iceblue.cn/repository/maven-public/</url>
        </repository>
</repositories>
<dependencies>
    <dependency>
        <groupId>e-iceblue</groupId>
        <artifactId>spire.pdf.free</artifactId>
        <version>5.1.0</version>
    </dependency>
</dependencies>

import com.spire.pdf.*;
import com.spire.pdf.barcode.PdfCodabarBarcode;
import com.spire.pdf.barcode.TextLocation;
import com.spire.pdf.graphics.PdfBrushes;
import com.spire.pdf.graphics.PdfImage;
import com.spire.pdf.graphics.PdfRGBColor;
import com.spire.pdf.graphics.PdfTrueTypeFont;
import com.spire.pdf.grid.PdfGrid;

import javax.imageio.ImageIO;
import java.awt.*;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;

public class AddBarcodeToTable {
    public static void main(String[] args)throws IOException {
        //创建PDF文档
        PdfDocument pdf = new PdfDocument();
        PdfPageBase page = pdf.getPages().add();

        //创建PdfGrid类的表格对象
        PdfGrid grid = new PdfGrid();
        grid.getStyle().setCellPadding(new PdfPaddings(5,5,3,3));
        grid.getStyle().setFont(new PdfTrueTypeFont(new Font("Arial Unicode MS", Font.PLAIN,10), true));
        grid.getStyle().setTextBrush(PdfBrushes.getBlack());

        //定义数据
        String[] data = {"产品代码;批次;交易单号;订单条码",
                "A1024;一批次;ORD10610; ;",
        };
        String[][] dataSource = new String[data.length][];
        for (int i = 0; i < data.length; i++) {
            dataSource[i] = data[i].split("[;]");
        }
        //填充数据到表格
        grid.setDataSource(dataSource);

        //创建条形码
        PdfCodabarBarcode barcode = new PdfCodabarBarcode("00:12-3456/7890");
        barcode.setBarcodeToTextGapHeight(1f);
        barcode.setNarrowBarWidth(2);
        barcode.setEnableCheckDigit(true);
        barcode.setShowCheckDigit(true);
        barcode.setTextDisplayLocation(TextLocation.Bottom);
        PdfRGBColor blue = new PdfRGBColor(Color.blue);
        barcode.setTextColor(blue);

        //将条码保存为.png图片并添加到单元格
        BufferedImage bufferedImage = barcode.toImage();
        ImageIO.write(bufferedImage, "png", new File("F:\\IDEAProject\\Table_PDF\\CODE128.png"));
        grid.getRows().get(1).getCells().get(3).getStyle().setBackgroundImage(PdfImage.fromFile("CODE128.png"));
        grid.getRows().get(1).setHeight(50f);
        grid.getColumns().get(3).setWidth(120f);

        //绘制表格到页面指定位置
        grid.draw(page, 50, 100);

        //保存PDF文档
        pdf.saveToFile("AddBarcodeToTable.pdf",FileFormat.PDF);
        pdf.dispose();
    }
}