Question

如何使用MQTT和PHP获取IOT Foundation中的设备列表。我试过这个代码：

<?php
require("../phpMQTT.php");
$config = array(
  'org_id' => 't9m318',
  'port' => '1883',
  'app_id' => 'phpmqtt',
  'iotf_api_key' => 'my api key',
  'iotf_api_secret' => 'my api secret',
  'device_id' => 'phpmqtt'    
);

$config['server'] = $config['org_id'] . '.messaging.internetofthings.ibmcloud.com';
$config['client_id'] = 'a:' . $config['org_id'] . ':' . $config['app_id'];
$location = array();
// initialize client
$mqtt = new phpMQTT($config['server'], $config['port'],     $config['client_id']); 
$mqtt->debug = false;

// connect to broker
if(!$mqtt->connect(true, null, $config['iotf_api_key'],  $config['iotf_api_secret'])){
  echo 'ERROR: Could not connect to IoT cloud';
    exit();
}

但我不知道应该为订阅TOPIC做什么。

然后我更改代码并尝试使用HTTP而不是MQTT：

$ UserPass = $ config [＆＃39; iotf_api_key＆＃39;]。＆＃39;：＆＃39;。$ config [＆＃39; iotf_api_secret＆＃39;];

$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, 't9m318.messaging.internetofthings.ibmcloud.com');
curl_setopt($ch, CURLOPT_USERPWD,  $UserPass);
curl_setopt($ch, CURLOPT_HEADER, 0);
curl_setopt($ch, CURLOPT_HTTPHEADER, array('Accept: application/json','Content-Type: application/json'));
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_POST, 0);
curl_setopt($ch, CURLOPT_TIMEOUT, 10);
$output = curl_exec($ch);
curl_close($ch);
$arr = json_decode($output,true);
echo $arr;

但它不起作用！

由于

Answer 1

您无法通过MQTT获取设备列表，但您可以使用HTTP API列出所有设备。

您可以通过以下方式获取所有设备：

https://docs.internetofthings.ibmcloud.com/swagger/v0002.html#!/Bulk_Operations/get_bulk_devices

或按deviceType过滤：

https://docs.internetofthings.ibmcloud.com/swagger/v0002.html#!/Devices/get_device_types_typeId_devices

从IBM BLUEMIX IoT Foundation获取设备列表

1 个答案: