import com.aspose.cells.*;
import java.io.File;

public class AsposeExcelToImage {
    public static void main(String[] args) throws Exception {
        // 加載Excel文件
        Workbook workbook = new Workbook("input.xlsx");
        
        // 獲取第一個(gè)工作表
        Worksheet worksheet = workbook.getWorksheets().get(0);
        
        // 配置圖片選項(xiàng)（格式、分辨率等）
        ImageOrPrintOptions options = new ImageOrPrintOptions();
        options.setImageType(ImageType.PNG); // 輸出PNG格式
        options.setHorizontalResolution(300); // 分辨率
        options.setVerticalResolution(300);
        
        // 渲染整個(gè)工作表為圖片
        SheetRender render = new SheetRender(worksheet, options);
        render.toImage(0, "output_aspose.png"); // 保存圖片
        
        // 也可渲染指定單元格區(qū)域（例如A1到D10）
        CellArea area = new CellArea();
        area.startRow = 0;
        area.startColumn = 0;
        area.endRow = 9;
        area.endColumn = 3;
        worksheet.setPrintArea(area); // 設(shè)置打印區(qū)域即渲染區(qū)域
        render.toImage(0, "output_range.png");
    }
}

<dependency>
    <groupId>com.aspose</groupId>
    <artifactId>aspose-cells</artifactId>
    <version>23.12</version>
</dependency>

import com.spire.xls.*;

public class SpireExcelToImage {
    public static void main(String[] args) {
        // 加載Excel
        Workbook workbook = new Workbook();
        workbook.loadFromFile("input.xlsx");
        
        // 獲取第一個(gè)工作表
        Worksheet sheet = workbook.getWorksheets().get(0);
        
        // 保存為圖片（支持指定區(qū)域）
        sheet.saveToImage("output_spire.png");
        
        // 保存指定單元格區(qū)域（A1到C8）
        sheet.saveToImage(0, 0, 7, 2, "output_spire_range.png"); // 行、列起始索引及結(jié)束索引
    }
}

<dependency>
    <groupId>e-iceblue</groupId>
    <artifactId>spire.xls</artifactId>
    <version>14.7.0</version>
</dependency>

import org.apache.poi.ss.usermodel.*;
import javax.imageio.ImageIO;
import java.awt.*;
import java.awt.image.BufferedImage;
import java.io.File;

public class PoiExcelToImage {
    public static void main(String[] args) throws Exception {
        Workbook workbook = WorkbookFactory.create(new File("input.xlsx"));
        Sheet sheet = workbook.getSheetAt(0);
        
        // 簡單計(jì)算圖片寬高（實(shí)際需根據(jù)單元格大小動(dòng)態(tài)計(jì)算）
        int width = 800;
        int height = 600;
        BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
        Graphics2D g = image.createGraphics();
        
        // 繪制背景
        g.setColor(Color.WHITE);
        g.fillRect(0, 0, width, height);
        
        // 繪制單元格（簡化示例，僅繪制文本）
        int rowY = 50;
        for (Row row : sheet) {
            int colX = 50;
            for (Cell cell : row) {
                String value = cell.getStringCellValue();
                // 繪制文本
                g.setColor(Color.BLACK);
                g.drawString(value, colX, rowY);
                colX += 100; // 單元格寬度
            }
            rowY += 30; // 行高
        }
        
        // 保存圖片
        ImageIO.write(image, "PNG", new File("output_poi.png"));
        g.dispose();
    }
}

<dependency>
    <groupId>org.apache.poi</groupId>
    <artifactId>poi</artifactId>
    <version>5.2.4</version>
</dependency>
<dependency>
    <groupId>org.apache.poi</groupId>
    <artifactId>poi-ooxml</artifactId>
    <version>5.2.4</version>
</dependency>