利用 開關節點處理Json物件
If you now go back to the HiveMQ input page and send the MQTT message {“analyze”:true, “value”:6}, you will see that the first (top) output is activated and the incoming messages is routed, or ‘switched’, to output 1. If you send the original message {“analyze”:false, “value”:10}, the switch node will activate output 2 and the original debug node will fire.
{"analyze": false , "value":70}
http://www.hivemq.com/demos/websocket-client/
{"analyze": true , "value": 20}
http://www.hivemq.com/demos/websocket-client/
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