使用poi,做傳統的excel匯出，然後想在瀏覽器中，讓使用者選擇另存為，儲存使用者下載的xls檔案，這個時候，可能的是在ie下出現亂碼（ie,9,10,11),但在firefox,chrome下沒亂碼，

ie,chrom,firfox下處理檔名顯示亂碼 
     */  
    public static String processFileName(HttpServletRequest request, String fileNames) {  
        String codedfilename = null;  
        try {  
            String
 
 agent = request.getHeader("USER-AGENT");  
            if (null != agent && -1 != agent.indexOf("MSIE") || null != agent  
                    && -1 != agent.indexOf("Trident")) {// ie  

                String name = java.net.URLEncoder.encode(fileNames, "UTF8");  

                codedfilename =
 
 name;  
            } else if (null != agent && -1 != agent.indexOf("Mozilla")) {// 火狐,chrome等  


                codedfilename = new String(fileNames.getBytes("UTF-8"), "iso-8859-1");  
            }  
        } catch (Exception e) {  
            e.printStackTrace();  
        }  
        return
 
 codedfilename;  
    }  

response.setHeader("Cache-Control", "private");  
response.setHeader("Pragma", "private");  
response.setContentType("application/vnd.ms-excel;charset=utf-8");  
response.setHeader("Content-Type", "application/force-download");  

title = FileUtil.processFileName(request, title);  
response.setHeader("Content-disposition", "attachment;filename=" + title + ".xls");