     uploader.onError = function (code) {
                switch (code) {
                    case "Q_TYPE_DENIED":
                        code = "文件类型错误！";
                        break;
                    case "Q_EXCEED_NUM_LIMIT":
                        code = "最多只能上传" + maxFiles + '个文件';
                        break;
                    case "F_DUPLICATE":
                        code = "文件重复添加！";
                        break;
                    case "