自习室优化ok

lib/request/dto/room/board_token_dto.dart

@@ -0,0 +1,32 @@
+
+class BoardTokenDto {
+  BoardTokenDto({
+    required this.expiresAt,
+    required this.whiteboardAppid,
+    required this.whiteboardUuid,
+    required this.expiresIn,
+    required this.whiteboardToken,
+  });
+
+  DateTime expiresAt;
+  String whiteboardAppid;
+  String whiteboardUuid;
+  int expiresIn;
+  String whiteboardToken;
+
+  factory BoardTokenDto.fromJson(Map<dynamic, dynamic> json) => BoardTokenDto(
+    expiresAt: DateTime.parse(json["expires_at"]),
+    whiteboardAppid: json["whiteboard_appid"],
+    whiteboardUuid: json["whiteboard_uuid"],
+    expiresIn: json["expires_in"],
+    whiteboardToken: json["whiteboard_token"],
+  );
+
+  Map<dynamic, dynamic> toJson() => {
+    "expires_at": expiresAt.toIso8601String(),
+    "whiteboard_appid": whiteboardAppid,
+    "whiteboard_uuid": whiteboardUuid,
+    "expires_in": expiresIn,
+    "whiteboard_token": whiteboardToken,
+  };
+}