Le nom du fichier téléchargé par Java est tronqué

response.setContentType("multipart/form-data");

            String userAgent = request.getHeader("User-Agent");
            String oraFileName = meetingFile.getFileName();
            String formFileName=oraFileName;
              
            // 针对IE或者以IE为内核的浏览器：
            if (userAgent.contains("MSIE") || userAgent.contains("Trident")) {
                formFileName = java.net.URLEncoder.encode(formFileName, "UTF-8");
            } else {
                // 非IE浏览器的处理：
                formFileName = new String(formFileName.getBytes("UTF-8"), "ISO-8859-1");
            }
            response.setHeader("Content-disposition",
                    String.format("attachment; filename=\"%s\"", formFileName));
            response.setContentType("application/vnd.ms-excel;charset=utf-8");
            response.setCharacterEncoding("UTF-8");
                   
                        ServletOutputStream out;
            // 通过文件路径获得File对象
            File file = null;
            if (meetingFile != null) {
                file = new File(path + "upload/"+oraFileName);
            }