Android WebSocket開發

一，在模塊build.gradle中添加webSocket的依賴包

//WebSocket 依賴包
implementation 'com.neovisionaries:nv-websocket-client:2.2'

二，連接webSocket

  try {
          WebSocket ws = new WebSocketFactory().createSocket(url, CONNECT_TIMEOUT) //ws地址，和設置超時時間
                    .setFrameQueueSize(FRAME_QUEUE_SIZE)//設置幀隊列最大值為5
                    .setMissingCloseFrameAllowed(false)//設置不允許服務端關閉連接卻未發送關閉幀
                    .addListener(wsListener = new WsListener())//添加回調監聽
                    .connectAsynchronously();//非同步連接

        } catch (IOException e) {
            e.printStackTrace();
        }

三、添加內部類，實現回調監聽

/**
     * 繼承預設的監聽空實現WebSocketAdapter,重寫我們需要的方法
     * onTextMessage 收到文字信息
     * onConnected 連接成功
     * onConnectError 連接失敗
     * onDisconnected 連接關閉
     */
    class WsListener extends WebSocketAdapter {
        @Override
        public void onTextMessage(WebSocket websocket, String text) throws Exception {
            super.onTextMessage(websocket, text);
            logger.info(text);
            String[] msgs = text.split("\\|");
            if (msgs.length >= 2) {
                NotificationShow(msgs[0], msgs[1]);
                sendReceiveMessageBroadcast(msgs[0], msgs[1]);
            }
        }

        @Override
        public void onConnected(WebSocket websocket, Map<String, List<String>> headers)
                throws Exception {
            super.onConnected(websocket, headers);
            logger.info("連接成功");
        }

        @Override
        public void onConnectError(WebSocket websocket, WebSocketException exception)
                throws Exception {
            super.onConnectError(websocket, exception);
            logger.warning("連接錯誤：" + exception.getMessage());
        }

        @Override
        public void onDisconnected(WebSocket websocket, WebSocketFrame serverCloseFrame, WebSocketFrame clientCloseFrame, boolean closedByServer)
                throws Exception {
            super.onDisconnected(websocket, serverCloseFrame, clientCloseFrame, closedByServer);
            logger.warning("斷開連接");
        }

    }