将excel文件作为Spring响应传输时数据丢失

import org.apache.poi.ss.usermodel.*;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.GetMapping;

import javax.servlet.http.HttpServletResponse;
import java.io.IOException;

@Controller
public class ExcelController {

    @GetMapping("/downloadExcel")
    public void downloadExcel(HttpServletResponse response) throws IOException {
        // 设置响应头
        response.setContentType("application/vnd.ms-excel");
        response.setHeader("Content-Disposition", "attachment; filename=example.xlsx");

        // 创建Workbook对象
        Workbook workbook = WorkbookFactory.create(true);

        // 创建Sheet对象
        Sheet sheet = workbook.createSheet("Sheet1");

        // 填充数据
        Row row = sheet.createRow(0);
        Cell cell = row.createCell(0);
        cell.setCellValue("Hello, Excel!");

        // 写入响应输出流
        workbook.write(response.getOutputStream());
        workbook.close();
    }
}