@At
	@Ok("raw")
	public File down() throws FileNotFoundException, IOException {
		HSSFWorkbook wk=new HSSFWorkbook();
		HSSFSheet st=wk.createSheet("用户基本信息");
		List<ExcelBean> list = dao.query(ExcelBean.class,null);
		for (int i = 0; i < list.size(); i++) {
			System.out.println(list.get(i));
			HSSFRow row = st.createRow(i);
			HSSFCell c1 = row.createCell((short) 0);
			HSSFCell c2 = row.createCell((short) 1);
			HSSFCell c3 = row.createCell((short) 2);
			HSSFCell c4 = row.createCell((short) 3);
			c1.setCellValue(list.get(i).getId());
			c2.setCellValue(list.get(i).getName());
			c3.setCellValue(list.get(i).getSex());
			c4.setCellValue(list.get(i).getAge());
		}
		File file=new File("d:temp/a.xls");
		if(!file.exists()) {
			System.out.println("文件不存在，創建文件中");
			file.createNewFile();
		}
		FileOutputStream io=new FileOutputStream(file);
		wk.write(io);
		io.close();
		return file;
	}

ExcelBean [id=27, name=***, sex=男, age=24]
ExcelBean [id=28, name=***, sex=男, age=23]
ExcelBean [id=29, name=**, sex=女, age=23]
ExcelBean [id=30, name=***, sex=女, age=23]
ExcelBean [id=31, name=***, sex=男, age=24]
ExcelBean [id=32, name=***, sex=男, age=28]
ExcelBean [id=33, name=***, sex=女, age=24]