websphere上载的中文名乱码，而用tomcat没这有关问题

         String recommendedName = new String(file.getBytes(), “ISO8859_1”);                                

         response.reset();

         response.setContentType(“application/vnd.ms-excel;charset=gb2312”);                                   

                                                           

         response.setHeader("Pragma", "No-cache");                                    

         response.setHeader("Cache-Control", "no-cache");                          

         response.setDateHeader("Expires", 0);                                        

         

         response.setHeader("Content-Disposition","attachment; filename=" + recommendedName + "\"");                                                                        

         response.resetBuffer();                                                      

         PrintWriter sos = response.getWriter();

         sos.print(sb.toString());

         sos.flush();                                                                 

         sos.close();