node.js 请问‘TypeError: device.serve is not a function’错误原因
//加载sdk
const aliyunIot = require('aliyun-iot-device-sdk');
//创建设备实例
const device = aliyunIot.device({
//激活凭证,这里替换成在平台申请到的真实设备凭证
productKey: 'a1lDtBtQ1eR',
deviceName: 'test2',
deviceSecret: '2WNnV5KpkbzZJ3Q3wpLNH1k36s0gry9f',
});
device.on('connect', () => {
//连接成功
console.log('connect successfully');
//监听云端消息
device.serve('property/set', params => {
console.log('receieve params:', params);
//原样上报
console.log('post props:', params);
device.postProps(params, err => {
if(err){
return console.log('post error:', err);
}
console.log('post successfully!');
});
});
});
device.on('error', (err) =>{
console.log('error',err);
});
错误:PS C:\Users\moreo\virtual-nodejs> node index.js
connect successfully
C:\Users\moreo\virtual-nodejs\index.js:14
device.serve('property/set', params=>{
^
TypeError: device.serve is not a function
at Device.<anonymous> (C:\Users\moreo\virtual-nodejs\index.js:14:12)
at Device.emit (events.js:209:13)
at MqttClient.<anonymous> (C:\Users\moreo\virtual-nodejs\node_modules\aliyun-iot-device-sdk\lib\device.js:379:18)
at MqttClient.emit (events.js:214:15)
at MqttClient._handleConnack (C:\Users\moreo\virtual-nodejs\node_modules\mqtt\lib\client.js:918:10)
at MqttClient._handlePacket (C:\Users\moreo\virtual-nodejs\node_modules\mqtt\lib\client.js:350:12)
at work (C:\Users\moreo\virtual-nodejs\node_modules\mqtt\lib\client.js:292:12)
at Writable.writable._write (C:\Users\moreo\virtual-nodejs\node_modules\mqtt\lib\client.js:302:5)
at doWrite (C:\Users\moreo\virtual-nodejs\node_modules\readable-stream\lib\_stream_writable.js:428:64)
at writeOrBuffer (C:\Users\moreo\virtual-nodejs\node_modules\readable-stream\lib\_stream_writable.js:417:5)
PS C:\Users\moreo\virtual-nodejs> node index.js
connect successfully
C:\Users\moreo\virtual-nodejs\index.js:14
device.serve('property/set', params=>{
^
TypeError: device.serve is not a function
at Device.<anonymous> (C:\Users\moreo\virtual-nodejs\index.js:14:12)
at Device.emit (events.js:209:13)
at MqttClient.<anonymous> (C:\Users\moreo\virtual-nodejs\node_modules\aliyun-iot-device-sdk\lib\device.js:379:18)
at MqttClient.emit (events.js:214:15)
at MqttClient._handleConnack (C:\Users\moreo\virtual-nodejs\node_modules\mqtt\lib\client.js:918:10)
at MqttClient._handlePacket (C:\Users\moreo\virtual-nodejs\node_modules\mqtt\lib\client.js:350:12)
at work (C:\Users\moreo\virtual-nodejs\node_modules\mqtt\lib\client.js:292:12)
at Writable.writable._write (C:\Users\moreo\virtual-nodejs\node_modules\mqtt\lib\client.js:302:5)
at doWrite (C:\Users\moreo\virtual-nodejs\node_modules\readable-stream\lib\_stream_writable.js:428:64)
at writeOrBuffer (C:\Users\moreo\virtual-nodejs\node_modules\readable-stream\lib\_stream_writable.js:417:5)