java导出不规则excel

要在Java中导出不规则的Excel，您可以使用Apache POI库。以下是一个示例代码，演示如何导出不规则的Excel文件：

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

import java.io.FileOutputStream;
import java.io.IOException;
import java.util.Arrays;
import java.util.List;

public class ExcelExporter {
    public static void main(String[] args) {
        Workbook workbook = new XSSFWorkbook();
        Sheet sheet = workbook.createSheet("Sheet1");

        // 创建不规则的单元格区域
        List<CellRangeAddress> mergedRegions = Arrays.asList(
                new CellRangeAddress(0, 0, 0, 2),
                new CellRangeAddress(1, 2, 0, 0),
                new CellRangeAddress(1, 1, 1, 2)
        );

        // 合并单元格
        for (CellRangeAddress cellRangeAddress : mergedRegions) {
            sheet.addMergedRegion(cellRangeAddress);
        }

        // 设置内容
        Row row1 = sheet.createRow(0);
        Cell cell11 = row1.createCell(0);
        cell11.setCellValue("Title");

        Row row2 = sheet.createRow(1);
        Cell cell21 = row2.createCell(0);
        cell21.setCellValue("Data 1");
        Cell cell22 = row2.createCell(1);
        cell22.setCellValue("Data 2");

        Row row3 = sheet.createRow(2);
        Cell cell31 = row3.createCell(0);
        cell31.setCellValue("Data 3");
        Cell cell32 = row3.createCell(1);
        cell32.setCellValue("Data 4");

        try {
            // 导出Excel文件
            FileOutputStream fileOut = new FileOutputStream("output.xlsx");
            workbook.write(fileOut);
            fileOut.close();
        } catch (IOException e) {
            e.printStackTrace();
        }

        System.out.println("Excel导出成功！");
    }
}

请确保已将Apache POI库添加到您的项目中。该示例代码在创建了一个不规则的Excel文件后，将其导出为名为"output.xlsx"的文件。