上次写的java 跟js的下载功能 写的不清晰，有些需求可能还达不到，但是有热心的朋友的提供了，感谢
java-Ms郑 童鞋。
思路 ，代码都更加完善的版本给我，我在这里整理了一下，以供大家查询
其实 导出功能，跟下载功能都可以用到 。上菜。
<a href="#" class="btn daochu" >导出</a>
js 如果是下载 不需要传path
function exportExcel(){
$(".daochu").attr('href','${ctx}/assetBzd/zcBzd/exportExcel?str=+"${zcBzd.menuFlag}"');
}
@RequestMapping(value = "exportExcel")
public void exportExcel(HttpServletRequest request, HttpServletResponse response,Model model,
RedirectAttributes redirectAttributes,@RequestParam(value="str")String str){
String fileName = "报账单列表"+DateUtils.getDate("yyyyMMddHHmmss")+".xlsx";
String message="";
try {
fileName = new String(fileName.getBytes("GBK"), "iso8859-1");
response.reset();
response.setHeader("Content-Disposition", "attachment;filename="
+ fileName);// 指定下载的文件名
response.setContentType("application/vnd.ms-excel");
response.setHeader("Pragma", "no-cache");
response.setHeader("Cache-Control", "no-cache");
response.setDateHeader("Expires", 0);
ZcBzd zcBzd =new ZcBzd();
zcBzd.setBzdType("sbBzd");
zcBzd.setMenuFlag(str);
Page<ZcBzd> page = zcBzdService.findPage(new Page<ZcBzd>(request, response), zcBzd);
List<BzdConfigTable> bzdConfigTable = zcBzdService.getByClassName(zcBzd.getBzdType());
List<String> listColumn = getlistColumn(bzdConfigTable.get(0));
List<ZcBzd> listData = page.getList();
message=createExcelUtils.getBzdExcelNew(listColumn,listData,response);
System.out.println(message);
//message=createExcelUtils.getBzdExcel(listColumn,listData);
//
//addMessage(redirectAttributes, message);
//model.addAttribute("bzdConfigTable" , bzdConfigTable) ;
//model.addAttribute("page", page);
//return "modules/zcBzd/zcBzdList";
} catch (Exception e) {
addMessage(redirectAttributes, message);
}
//return "";
}
public static String getBzdExcelNew(List<String> listColumn,List<ZcBzd> listData,HttpServletResponse response){
FileOutputStream fout = null;
String message="";
HSSFCell cell = null;
try{
// 第一步，创建一个webbook，对应一个Excel文件
HSSFWorkbook wb = new HSSFWorkbook();
// 第二步，在webbook中添加一个sheet,对应Excel文件中的sheet
HSSFSheet sheet = wb.createSheet("学生表一");
// 第三步，在sheet中添加表头第0行,注意老版本poi对Excel的行数列数有限制short
HSSFRow row = sheet.createRow((int) 0);
// 第四步，创建单元格，并设置值表头 设置表头居中
HSSFCellStyle style = wb.createCellStyle();
style.setAlignment(HSSFCellStyle.ALIGN_CENTER); // 创建一个居中格式
for (int j= 0; j< listColumn.size(); j++){
cell = row.createCell((short) j);
cell.setCellValue(listColumn.get(j));
cell.setCellStyle(style);
}
// cell = row.createCell((short) 0);
// cell.setCellValue("学号");
// cell.setCellStyle(style);
// cell = row.createCell((short) 1);
// cell.setCellValue("姓名");
// cell.setCellStyle(style);
// cell = row.createCell((short) 2);
// cell.setCellValue("年龄");
// cell.setCellStyle(style);
// cell = row.createCell((short) 3);
// cell.setCellValue("生日");
// cell.setCellStyle(style);
// 第五步，写入实体数据 实际应用中这些数据从数据库得到，
// List list = createExcelUtils.getStudent();
for (int i = 0; i < listData.size(); i++){
row = sheet.createRow((int) i + 1);
ZcBzd zcBzd = (ZcBzd) listData.get(i);
// 第四步，创建单元格，并设置值
row.createCell((short) 0).setCellValue(zcBzd.getFillPersonName().getName());//填写人姓名
row.createCell((short) 1).setCellValue(zcBzd.getEquipmentName());
row.createCell((short) 2).setCellValue((double) zcBzd.getAccoQuantity());
// cell = row.createCell((short) 3);
// cell.setCellValue(new SimpleDateFormat("yyyy-mm-dd").format(zcBzd.getCheAccDate()));
row.createCell((short) 3).setCellValue((double) zcBzd.getAccoAmount());
row.createCell((short) 4).setCellValue(zcBzd.getUseDepartmentName().getName()); //归属部门
row.createCell((short) 5).setCellValue(zcBzd.getAssCustodian().getName());
row.createCell((short) 6).setCellValue(new SimpleDateFormat("yyyy-mm-dd hh-mm-ss").format(zcBzd.getCheAccDate()));
row.createCell((short) 7).setCellValue(zcBzd.getInvoiceNo());
row.createCell((short) 8).setCellValue("1".equals(zcBzd.getWheDutyFree())?"是":"否");
row.createCell((short) 9).setCellValue(zcBzd.getAccoNo());
row.createCell((short) 10).setCellValue(new SimpleDateFormat("yyyy-mm-dd hh-mm-ss").format(zcBzd.getFillTime()));
}
OutputStream output = response.getOutputStream();
BufferedOutputStream bufferedOutPut = new BufferedOutputStream(output);
bufferedOutPut.flush();
wb.write(bufferedOutPut);
bufferedOutPut.close();
} catch (Exception e){
e.printStackTrace();
message="导出错误";
}finally{
if(fout != null){
try {
fout.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
message="导出错误";
}
}
}
System.out.println("**************************导出完毕**********************");
return message;
}