使用Apache POI一次调用返回多个Excel文件

Workbook workbook = new XSSFWorkbook();

Sheet sheet = workbook.createSheet("Sheet1");

Row row = sheet.createRow(0);
Cell cell = row.createCell(0);
cell.setCellValue("Hello, World!");

Workbook workbook1 = new XSSFWorkbook();
Sheet sheet1 = workbook1.createSheet("Sheet1");

Workbook workbook2 = new XSSFWorkbook();
Sheet sheet2 = workbook2.createSheet("Sheet2");

FileOutputStream fileOut = new FileOutputStream("output1.xlsx");
workbook1.write(fileOut);
fileOut.close();

FileOutputStream fileOut2 = new FileOutputStream("output2.xlsx");
workbook2.write(fileOut2);
fileOut2.close();