java代码实现导出excel

Sure, here is an example Java code to export data to an Excel file using Apache POI library:

// Create a Workbook
Workbook workbook = new XSSFWorkbook();

// Create a sheet
Sheet sheet = workbook.createSheet("Sheet1");

// Create a header row
Row headerRow = sheet.createRow(0);
headerRow.createCell(0).setCellValue("Name");
headerRow.createCell(1).setCellValue("Age");
headerRow.createCell(2).setCellValue("Email");

// Create some data rows
Row dataRow = sheet.createRow(1);
dataRow.createCell(0).setCellValue("John Doe");
dataRow.createCell(1).setCellValue(30);
dataRow.createCell(2).setCellValue("john.doe@example.com");

// Save the workbook to a file
String filename = "data.xlsx";
try (OutputStream outputStream = new FileOutputStream(filename)) {
    workbook.write(outputStream);
    System.out.println("Data exported to " + filename + " successfully!");
} catch (IOException e) {
    System.out.println("Failed to export data to " + filename);
    e.printStackTrace();
}

Hope this helps!