java导出文件中文名乱码问题

//处理中文名乱码问题
            String userAgent = request.getHeader("User-Agent");
            if(StringUtils.contains(userAgent, "Firefox")){//火狐浏览器
                fileName = new String(fileName.getBytes("UTF-8"), "ISO-8859-1");    
               }else{//IE，google等其他浏览器
                   fileName = URLEncoder.encode(fileName,"UTF8");
               }
    
            response.setHeader("Content-Disposition", "attachment;fileName="+ fileName);