當前正在Node-RED上創建一個運行在Node.js上的ETL流,它運行在CloudFoundry上運行的Bluemix上。如何將包含在一條消息中的JSON數組轉換爲多個JSON對象消息?
我在查詢一個Cloudant數據庫,並獲取包含所有文檔作爲JSON對象的單個JSON數組返回的查詢結果。
不,我想單獨處理那些穿着管道的時尚。這怎麼能在Node-RED中實現?
非常感謝!
JSON
[{
"id": "c8342b2a.bf0df",
"type": "cloudant in",
"z": "2f0a54f6.110ccc",
"service": "nokeredrkie-cloudantNoSQLDB",
"cloudant": "",
"name": "",
"database": "tweets",
"search": "_all_",
"design": "",
"index": "",
"x": 295.70001220703125,
"y": 450.9333190917969,
"wires": [
["5e83a34.48cdd5c"]
]
}, {
"id": "c9411e75.2b1b7",
"type": "debug",
"z": "2f0a54f6.110ccc",
"name": "",
"active": true,
"console": "false",
"complete": "payload",
"x": 646.699951171875,
"y": 470.7333679199219,
"wires": []
}, {
"id": "3f1d2018.8f5ec8",
"type": "inject",
"z": "2f0a54f6.110ccc",
"name": "",
"topic": "",
"payload": "",
"payloadType": "date",
"repeat": "",
"crontab": "",
"once": true,
"x": 126.70001220703125,
"y": 472.6666564941406,
"wires": [
["c8342b2a.bf0df"]
]
}, {
"id": "5e83a34.48cdd5c",
"type": "function",
"z": "2f0a54f6.110ccc",
"name": "",
"func": "//msg.payload = JSON.parse(msg.payload);\nmsg.payload = msg.payload[1].tweet.user.screen_name;\nreturn msg;",
"outputs": 1,
"noerr": 0,
"x": 444.70001220703125,
"y": 489.4000549316406,
"wires": [
["c9411e75.2b1b7"]
]
}]
JSON.parse該字符串,然後使用數組方法 –
如果我理解正確,你想要移動單個對象到一個新的變量。我對嗎? – Rajesh