在Java中将.csv转换为.xls

<dependency>
    <groupId>org.apache.poi</groupId>
    <artifactId>poi</artifactId>
    <version>4.1.2</version>
</dependency>

<dependency>
    <groupId>org.apache.poi</groupId>
    <artifactId>poi-ooxml</artifactId>
    <version>4.1.2</version>
</dependency>

import org.apache.poi.ss.usermodel.*;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;

import java.io.*;

public class CSVtoXLSConverter {
    public static void main(String[] args) {
        String csvFilePath = "path/to/input.csv";
        String xlsFilePath = "path/to/output.xls";

        try {
            Workbook workbook = new XSSFWorkbook();
            Sheet sheet = workbook.createSheet("Sheet1");

            BufferedReader bufferedReader = new BufferedReader(new FileReader(csvFilePath));
            String line;
            int rowNumber = 0;

            while ((line = bufferedReader.readLine()) != null) {
                String[] data = line.split(",");
                Row row = sheet.createRow(rowNumber++);

                for (int i = 0; i < data.length; i++) {
                    Cell cell = row.createCell(i);
                    cell.setCellValue(data[i]);
                }
            }

            bufferedReader.close();

            FileOutputStream fileOutputStream = new FileOutputStream(xlsFilePath);
            workbook.write(fileOutputStream);
            workbook.close();
            fileOutputStream.close();

            System.out.println("Conversion completed successfully.");
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}