MessageService
getUnReadMessageNum()
MessageController
AppClientController
AppClientManager
MessageWebSocketHandshakeInterceptor
+ beforeHandshake()+ afterHandshake()
MessageSender
getMessageNum()
WebUI
Message Console
save()
send()
MessageDao
deRegisterAppClient()
Scheduler
WebSocketManager
+ addUserSession(webSocketSession)+ removeUserSession(webSocketSession)
App User
registerAppClient()
AppClientDao
+ save(appClient)+ delete(clientId)+ getClientList(userId)
MessageWebSocketHandler
+ afterConnectionEstablished()+ afterConnectionClosed()+ handleTextMessage()
delete()
Web User
WebSocketConfig
+ registerWebSocketHandlers(registry)
