pom依赖

    <!-- https://mvnrepository.com/artifact/e-iceblue/spire.xls.free -->
    <dependency>
        <groupId>e-iceblue</groupId>
        <artifactId>spire.xls.free</artifactId>
        <version>5.1.0</version>
    </dependency>

jar包方式
https://mvnrepository.com/artifact/e-iceblue/spire.xls.free/5.1.0

将Excel转换为Java中的图像

import com.spire.xls.Workbook;
import com.spire.xls.Worksheet;

/**
 * <p>
 * Description: TODO
 * </p>
 *
 * @author songzixian
 * @version v2.0.0
 * @create 2022-05-31 23:51
 * @see com.songzixian.demo
 */
public class Test {
    public static void main(String[] args) {

        //创建一个工作簿实例
        Workbook workbook = new Workbook();
        // //获取指定Excel文件
        workbook.loadFromFile("D:\\home\\moneyDimension.xlsx");

        //设置x轴、y轴dpi (设置该参数可以调图片清晰度)
        workbook.getConverterSetting().setXDpi(300);
        workbook.getConverterSetting().setYDpi(300);

        // //获取指定工作表
        Worksheet sheet = workbook.getWorksheets().get(0);

        //转成图片并且存储
        sheet.saveToImage("D:\\home\\image2.png");
    }
}

将Excel转换为PDF

将整个Excel工作簿转换为PDF。

import com.spire.xls.FileFormat;
import com.spire.xls.Workbook;
import com.spire.xls.Worksheet;

/**
 * <p>
 * Description: TODO
 * </p>
 *
 * @author songzixian
 * @version v2.0.0
 * @create 2022-05-31 23:51
 * @see com.songzixian.demo
 */
public class Test {
    public static void main(String[] args) {

        //创建一个工作簿实例
        Workbook workbook = new Workbook();
        // //获取指定Excel文件
        workbook.loadFromFile("D:\\home\\moneyDimension.xlsx");
        
        // //获取指定工作表
        Worksheet sheet = workbook.getWorksheets().get(0);

        //转成图片并且存储
        workbook.saveToFile("D:\\home\\szxblog.pdf", FileFormat.PDF);

        System.out.println("转换成功");
    }
}

将单个Excel工作表转换为PDF。

import com.spire.xls.Workbook;
import com.spire.xls.Worksheet;

/**
 * <p>
 * Description: TODO
 * </p>
 *
 * @author songzixian
 * @version v2.0.0
 * @create 2022-05-31 23:51
 * @see com.songzixian.demo
 */
public class Test {
    public static void main(String[] args) {

        //创建一个工作簿实例
        Workbook workbook = new Workbook();
        // //获取指定Excel文件
        workbook.loadFromFile("D:\\home\\moneyDimension.xlsx");
        
        //G//获取指定工作表
        Worksheet worksheet = workbook.getWorksheets().get(0);

        worksheet.saveToPdf("D:\\home\\szxblog2.pdf");

        System.out.println("转换成功");
    }
}

将Excel转换为TIFF

import com.spire.xls.Workbook;
import com.spire.xls.Worksheet;

public class ConvertExcelToTIFF {
    public static void main(String[] args) {
        //Create a Workbook instance
        Workbook workbook = new Workbook();
        //Load the Excel file
        workbook.loadFromFile("Input.xlsx");

        //Get the first worksheet
        Worksheet sheet = workbook.getWorksheets().get(0);

        //Save the first worksheet to TIFF
        sheet.saveToTiff("SheetToTiff.tiff");

        //Save a particular cell range in the first worksheet to TIFF
        //sheet.saveToTiff("CellRangeToTiff.tiff",1,1,5,2);
    }
}

将Excel转换为HTML

import com.spire.xls.FileFormat;
import com.spire.xls.Workbook;
import com.spire.xls.Worksheet;

/**
 * <p>
 * Description: TODO
 * </p>
 *
 * @author songzixian
 * @version v2.0.0
 * @create 2022-05-31 23:51
 * @see com.songzixian.demo
 */
public class Test {
    public static void main(String[] args) {

        //创建一个工作簿实例
        Workbook workbook = new Workbook();
        // //获取指定Excel文件
        workbook.loadFromFile("D:\\home\\moneyDimension.xlsx");

        // //获取指定工作表
        Worksheet sheet = workbook.getWorksheets().get(0);

        //支持多种格式
        workbook.saveToFile("D:\\home\\szxblog.html", FileFormat.HTML);

        System.out.println("转换成功");
    }
}