使用Java将图片添加到Excel的几种方式

1、超链接

使用POI，依赖如下

         <dependency>
            <groupId>org.apache.poigroupId>
            <artifactId>poiartifactId>
            <version>4.1.2version>
        dependency>

Java代码如下,运行该程序它会在桌面创建ImageLinks.xlsx文件。

import org.apache.poi.common.usermodel.HyperlinkType;
import org.apache.poi.ss.usermodel.IndexedColors;
import org.apache.poi.xssf.usermodel.*;

import java.io.FileOutputStream;
import java.io.IOException;

public class ExportTest {
    public static void main(String[] args) {
        // 创建工作簿
        XSSFWorkbook workbook = new XSSFWorkbook();
        XSSFSheet sheet = workbook.createSheet("Image Links");

        // 创建超链接
        XSSFRow row = sheet.createRow(0);
        XSSFCell cell = row.createCell(0);

        XSSFCreationHelper creationHelper = workbook.getCreationHelper();
        XSSFHyperlink hyperlink = creationHelper.createHyperlink(HyperlinkType.URL);
        hyperlink.setAddress("https://img1.baidu.com/it/u=727029913,321119353&fm=253&app=138&size=w931&n=0&f=JPEG&fmt=auto?sec=1698771600&t=fcf922a02fa5fc68ebf888e7fc1c9dcd");

        // 将超链接添加到单元格
        cell.setHyperlink(hyperlink);
        // 设置字体样式为蓝色
        XSSFFont font = workbook.createFont();
        font.setColor(IndexedColors.BLUE.getIndex());

        XSSFCellStyle style = workbook.createCellStyle();
        style.setFont(font);

        cell.setCellStyle(style);
        cell.setHyperlink(hyperlink);
        cell.setCellValue("点击这里下载图片");
        // 保存Excel文件到桌面
        String desktopPath = System.getProperty("user.home") + "/Desktop/";
        String filePath = desktopPath + "ImageLinks.xlsx";

        try (FileOutputStream outputStream = new FileOutputStream(filePath)) {
            workbook.write(outputStream);
            System.out.println("Excel file has been saved to the desktop.");
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}

点击它会自动打开浏览器访问设置的超链接

2、单元格插入图片 - POI

使用POI
下面是java代码

import org.apache.poi.ss.usermodel.Workbook;
import org.apache.poi.util.IOUtils;
import org.apache.poi.xssf.usermodel.*;

import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.URL;


public class ExportTest {
    public static void main(String[] args) {
        // 创建工作簿
        XSSFWorkbook workbook = new XSSFWorkbook();
        XSSFSheet sheet = workbook.createSheet("Images");

        // 从URL加载图片
        try {
            URL imageUrl = new URL("https://img1.baidu.com/it/u=727029913,321119353&fm=253&app=138&size=w931&n=0&f=JPEG&fmt=auto?sec=1698771600&t=fcf922a02fa5fc68ebf888e7fc1c9dcd");
            InputStream imageStream = imageUrl.openStream();
            byte[] bytes = IOUtils.toByteArray(imageStream);

            // 将图片插入到单元格
            XSSFRow row = sheet.createRow(0);
            XSSFCell cell = row.createCell(0);

            XSSFDrawing drawing = sheet.createDrawingPatriarch();
            XSSFClientAnchor anchor = drawing.createAnchor(0, 0, 0, 0, cell.getColumnIndex(), row.getRowNum(), cell.getColumnIndex() + 1, row.getRowNum() + 1);
            int pictureIdx = workbook.addPicture(bytes, Workbook.PICTURE_TYPE_JPEG);

            XSSFPicture picture = drawing.createPicture(anchor, pictureIdx);
            picture.resize(); // 调整图片大小

            imageStream.close();
        } catch (IOException e) {
            e.printStackTrace();
        }

        // 保存Excel文件到桌面
        String desktopPath = System.getProperty("user.home") + "/Desktop/";
        String filePath = desktopPath + "ExcelWithImage.xlsx";

        try (FileOutputStream outputStream = new FileOutputStream(filePath)) {
            workbook.write(outputStream);
            System.out.println("Excel file with image has been saved to the desktop.");
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}

运行代码之后会在桌面生成文件ExcelWithImage.xlsx

可以看到图片插入到了单元格中

但是尺寸太大了并且占了n行n列，下面设置成占1行1列，只需要修改一行代码

// 设置固定尺寸
 picture.resize(1, 1);

看着还是有点别扭，再设置一下宽高，看下效果

可以看到已经非常Nice了，下面是调整后的代码

import org.apache.poi.ss.usermodel.Workbook;
import org.apache.poi.util.IOUtils;
import org.apache.poi.xssf.usermodel.*;

import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.URL;


public class ExportTest {
    public static void main(String[] args) {
        // 创建工作簿
        XSSFWorkbook workbook = new XSSFWorkbook();
        XSSFSheet sheet = workbook.createSheet("Images");

        // 从URL加载图片
        try {
            URL imageUrl = new URL("https://img1.baidu.com/it/u=727029913,321119353&fm=253&app=138&size=w931&n=0&f=JPEG&fmt=auto?sec=1698771600&t=fcf922a02fa5fc68ebf888e7fc1c9dcd");
            InputStream imageStream = imageUrl.openStream();
            byte[] bytes = IOUtils.toByteArray(imageStream);

            // 将图片插入到单元格
            XSSFRow row = sheet.createRow(0);
            XSSFCell cell = row.createCell(0);
            // 设置单元格宽度，单位为字符
            int widthInCharacters = 10;
            row.getSheet().setColumnWidth(cell.getColumnIndex(), widthInCharacters * 256);
            // 设置单元格高度，单位为点数
            float heightInPoints = 100;
            row.setHeightInPoints(heightInPoints);
            XSSFDrawing drawing = sheet.createDrawingPatriarch();
            XSSFClientAnchor anchor = drawing.createAnchor(0, 0, 0, 0, cell.getColumnIndex(), row.getRowNum(), cell.getColumnIndex() + 1, row.getRowNum() + 1);
            int pictureIdx = workbook.addPicture(bytes, Workbook.PICTURE_TYPE_JPEG);

            XSSFPicture picture = drawing.createPicture(anchor, pictureIdx);
            picture.resize(1, 1);// 调整图片大小

            imageStream.close();
        } catch (IOException e) {
            e.printStackTrace();
        }

        // 保存Excel文件到桌面
        String desktopPath = System.getProperty("user.home") + File.separator + "Desktop" + File.separator;
        String filePath = desktopPath + "ExcelWithImage.xlsx";

        try (FileOutputStream outputStream = new FileOutputStream(filePath)) {
            workbook.write(outputStream);
            System.out.println("Excel file with image has been saved to the desktop.");
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}

3、单元格插入图片 - EasyExcel

先看效果

代码如下：

import com.alibaba.excel.EasyExcel;
import com.alibaba.excel.annotation.ExcelProperty;
import com.alibaba.excel.annotation.write.style.ContentRowHeight;
import org.apache.poi.util.IOUtils;

import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.net.URL;
import java.util.ArrayList;
import java.util.List;

public class ExportTest {
    public static void main(String[] args) {
        try {
            // 从URL加载图片
            URL imageUrl = new URL("https://img1.baidu.com/it/u=727029913,321119353&fm=253&app=138&size=w931&n=0&f=JPEG&fmt=auto?sec=1698771600&t=fcf922a02fa5fc68ebf888e7fc1c9dcd");
            InputStream imageStream = imageUrl.openStream();
            byte[] bytes = IOUtils.toByteArray(imageStream);

            // 保存Excel文件到桌面
            String desktopPath = System.getProperty("user.home") + File.separator + "Desktop" + File.separator;
            String filePath = desktopPath + "ExcelWithImage.xlsx";

            // 使用EasyExcel创建Excel
            EasyExcel.write(filePath)
                    .head(ImageData.class)
                    .sheet("Images")
                    .doWrite(data(bytes));

            System.out.println("Excel file with image has been saved to the desktop.");
            imageStream.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    @ContentRowHeight(100)
    private static class ImageData {
        @ExcelProperty("图片")
        private byte[] imageBytes;

        public ImageData(byte[] imageBytes) {
            this.imageBytes = imageBytes;
        }

        public byte[] getImageBytes() {
            return imageBytes;
        }
    }

    private static List<ImageData> data(byte[] imageBytes) {
        List<ImageData> list = new ArrayList<>();
        list.add(new ImageData(imageBytes));
        return list;
    }
}