Java根据模板文件生成excel文件，同时将excel文件转换成图片

要使用Java根据模板生成Excel文件并将其转换为图片，你可以使用Apache POI库来生成Excel文件，再使用Apache POI的XSSF2PNG库来将Excel转换为图片。以下是一个简化的代码示例：

首先，确保你的项目中包含了以下依赖（Maven格式）：

<!-- Apache POI -->
<dependency>
    <groupId>org.apache.poi</groupId>
    <artifactId>poi-ooxml</artifactId>
    <version>5.2.3</version>
</dependency>
<!-- Apache POI XSSF2PNG -->
<dependency>
    <groupId>org.apache.poi</groupId>
    <artifactId>poi-ooxml-schemas</artifactId>
    <version>5.2.3</version>
</dependency>
<dependency>
    <groupId>org.apache.poi</groupId>
    <artifactId>ooxml-schemas</artifactId>
    <version>1.4</version>
</dependency>

然后，使用以下Java代码生成Excel文件并转换为图片：

import org.apache.poi.ss.usermodel.*;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;
import org.apache.poi.xssf.usermodel.XSSFSheet;
import org.apache.poi.xssf.usermodel.XSSFRow;
import org.apache.poi.xssf.usermodel.XSSFCell;
import org.apache.poi.ss.util.CellUtil;
import org.apache.poi.ss.usermodel.IndexedColors;
import org.apache.poi.xssf.usermodel.XSSFPicture;
import org.apache.poi.xssf.usermodel.XSSFDrawing;
import org.apache.poi.xssf.usermodel.XSSFClientAnchor;
import org.apache.poi.openxml4j.exceptions.InvalidFormatException;
import org.apache.poi.ss.usermodel.Workbook;
import org.apache.poi.ss.usermodel.Sheet;
import org.apache.poi.ss.usermodel.Row;
import org.apache.poi.ss.usermodel.Cell;
import org.apache.poi.ss.usermodel.CellStyle;
import org.apache.poi.ss.usermodel.IndexedColors;
import org.apache.poi.ss.usermodel.Font;
import org.apache.poi.ss.util.CellRangeAddress;
import org.apache.poi.ss.usermodel.PictureData;
 
import java.io.*;
 
public class ExcelToImage {
    public static void main(String[] args) throws IOException, InvalidFormatException {
        Workbook workbook = new XSSFWorkbook();
        Sheet sheet = workbook.createSheet("Sheet1");
 
        // 填充数据到Excel文件
        Row row = sheet.createRow(0);
        Cell cell = row.createCell(0);
        cell.setCellValue("Hello World");
 
        // 将Excel转换为图片
        ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
        workbook.write(byteArrayOutputStream);
        workbook.close();
 
        // 使用XSSF2PNG库将Excel转换为图片
        XSSF2PNGConverter converter = new XSSF2PNGConverter();
        try (InputStream is = new ByteArrayInputStream(byteArrayOutputStream.toByteAr