Spring boot 导出Excel

Html页面: window.location.href="adjectfkController/exportTemplate?adjOrg="+ adjOrg +"&&adjDepart=" +adjDepart +"&&adjSubject="+adjSubject+"&&oaId="+oaId;

@RequestMapping(value="/exportTemplate",method=RequestMethod.GET)
public void download(HttpServletResponse response,@RequestParam String adjOrg,@RequestParam String adjSubject,
		@RequestParam String adjDepart,@RequestParam String oaId) throws IOException{
	// 声明一个工作薄
        HSSFWorkbook workbook = new HSSFWorkbook();
        //创建一个Excel表单,参数为sheet的名字
        HSSFSheet sheet = workbook.createSheet("模板表");
        //创建表头
        setTitle(workbook, sheet);
        List<Map<String, Object>> oalist = budgetAdjustService.getOainform(oaId);

　　　　//数据行，并且设置单元格数据
        HSSFRow hssfRow = sheet.createRow(1);
      	for(Map map :oalist) {
      	hssfRow.createCell(0).setCellValue(map.get("adjustType")+"");
       	hssfRow.createCell(1).setCellValue(map.get("applyDate")+"");
       	hssfRow.createCell(2).setCellValue(map.get("processCode")+"");
       	hssfRow.createCell(3).setCellValue(map.get("applyOrganization")+"");
       	hssfRow.createCell(4).setCellValue(map.get("applyDepartment")+"");
       	hssfRow.createCell(5).setCellValue(map.get("flag")+"");
      	 	}
      	hssfRow.createCell(6).setCellValue(adjOrg);
	hssfRow.createCell(7).setCellValue(adjDepart);
	hssfRow.createCell(8).setCellValue(adjSubject);

	SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy/MM/dd");
	String fileName = "Template -" + new Date().getTime() + ".xls";
        //清空response
        response.reset();
        //设置response的Header
        response.addHeader("Content-Disposition", "attachment;filename="+ fileName);
        OutputStream os = new BufferedOutputStream(response.getOutputStream());
        response.setContentType("application/vnd.ms-excel;charset=gb2312");
        //将excel写入到输出流中
        workbook.write(os);
        os.flush();
        os.close();
    }
　　　　//设置Excel表头
　　　　private void setTitle(HSSFWorkbook workbook, HSSFSheet sheet){
        HSSFRow row = sheet.createRow(0);
        //设置列宽，setColumnWidth的第二个参数要乘以256，这个参数的单位是1/256个字符宽度
       /* sheet.setColumnWidth(0, 0*256);
        sheet.setColumnWidth(2, 20*256);*/
        sheet.setColumnWidth(7, 60*256);

        //设置为居中加粗
        HSSFCellStyle style = workbook.createCellStyle();
        HSSFFont font = workbook.createFont();
        font.setBold(true);
        style.setFont(font);
        //导出的Excel头部字段
        String[] headers = { "调整类型", "申请日期", "OA流程编号", "申请组织","申请部门","申请科目","是否涉及人力成本",
				 "调出组织","调出部门","调出科目","调出月份","调出金额","调入组织","调入部门","调入科目","调入月份","调入金额","查询费控系统"};
		 // 设置表格默认列宽度为15个字节
		 sheet.setDefaultColumnWidth((short) 18);
		 for (short i = 0; i < headers.length; i++) {
			 HSSFCell cell = row.createCell(i);
			 HSSFRichTextString text = new HSSFRichTextString(headers[i]);
			 cell.setCellValue(text);
			 cell.setCellStyle(style);
			}
    }