JXL生成的excel文件+JAVA文件下载功能

    /** 
         * 下载个人订单 
         * @param request 
         * @param response 
         * @param modelMap 
         */  
        @RequestMapping(value="/download.do",method=RequestMethod.GET)  
        public void processDownload(HttpServletRequest request,HttpServletResponse response,ModelMap modelMap) {  
            long userId = getUserId(request);  
            String ids = request.getParameter("ids");  
            try {  
                Long[] idarray = getIdsFromStringArray(ids.split(","));  
                if (null == idarray || 0 == idarray.length) {  
                    return;  
                }  
                // 直接往response的输出流中写excel  
                OutputStream outputStream = response.getOutputStream();  
                // 获取文件名称  
                String fileName = getUserFileName(userId);  
                // 下载格式设置  
                response.setContentType("APPLICATION/OCTET-STREAM");  
                response.setHeader("Content-Disposition","attachment; filename=/"" + fileName + "/"");  
                  
                // 读取数据渲染模板并写入outputstream中  
                List<PhAdvertiSEOrderDO> advertiSEOrderList = phAdvertiSEOrderService.getAdvertiSEOrderByIds(idarray,userId);  
                outputStream = excelFileService.generalExcelFileInOutputStream(outputStream,advertiSEOrderList);  
                  
                outputStream.close();  
            } catch (Exception e) {  
                logger.error("下载报表发生异常！",e);  
            }  
        }  

    /* (non-Javadoc) 
         * @see com.netease.photography.service.ExcelFileService#generalExcelFileInOutputStream(java.lang.String,java.io.OutputStream,java.util.List) 
         */  
        public OutputStream generalExcelFileInOutputStream(OutputStream outputStream,List<PhAdvertiSEOrderDO> advertiSEOrderList) throws BiffException,IOException,WriteException {  
            // 检查参数是否合法  
            checkParam(tempalteFile,"no File",advertiSEOrderList);  
              
            // 获取模板  
            Workbook templatebook = Workbook.getWorkbook(new File(tempalteFile));  
            WritableWorkbook writeableWorkbook = Workbook.createWorkbook(outputStream,templatebook);  
            // 读取数据写入模板  
            readDataAndWriteTemplate(templatebook,writeableWorkbook,advertiSEOrderList);  
              
            return outputStream;  
        }  

    WritableWorkbook writeableWorkbook = Workbook.createWorkbook(outputStream,templatebook);  

    function getOrderFileNoDirect() {  
        var ids ="";  
        for(var i=0;i<30;i++){  
            if($("choose"+i) != null && $("choose"+i).checked == true) {  
                ids += $("choose"+i).value;  
                ids += ",";  
            }  
        }  
        if(ids==""){  
            alert('不能建立空报表！');  
            return;  
        }  
        window.open("download.do?ids="+ids);  
    }