javascript - AWS 物联网 : Read Thing Shadow

Question

aws iot javascript sdk 有点深奥。我有一个影子，我只想读出来。没什么大不了的(我认为)

我不知道我需要使用什么功能，只是读取事物影子数据。与 AWS 的连接工作正常，但无论我尝试做什么，我都没有收到任何数据。

到目前为止，这是我的代码:

var awsIot = require('aws-iot-device-sdk');

var name = 'Testthing';

var shadow = awsIot.thingShadow({
   keyPath: 'cert/privkey.pem', 
  certPath: 'cert/cert.pem',
    caPath: 'cert/rootCA.crt',
  clientId: "testapp",
      host: "xxx"
});


shadow.on('connect', function() {
  shadow.register('Testthing'); 
});

shadow.get(name, data) { // something like this..
  console.log(data);
});

提前致谢!

Answer 1

自己修好了。要读出您当前的 Thing Shadow，请使用此代码:

var awsIot = require('aws-iot-device-sdk');
var name = 'yourThingName';

var thingShadows = awsIot.thingShadow({
   keyPath: 'cert/privkey.pem', 
  certPath: 'cert/cert.pem',
    caPath: 'cert/rootCA.crt',
  clientId: "YourAppName",
      host: "YourHostLink"
});



thingShadows.on('connect', function() {
    thingShadows.register(name, {}, function() {
       thingShadows.get(name);
    });
});

thingShadows.on('status',  function(name, stat, clientToken, stateObject) {
  console.log('received '+stat+' on '+name+': '+JSON.stringify(stateObject));
});