我做了以下教程，使用IoT Foundation将我的Raspberry Pi连接到Bluemix上的应用程序：
除了client.py之外，我已经完成了所有的工作（本教程中的步骤36）。我收到以下错误消息：
client.py:9: RuntimeWarning: This channel is already in use, continuing anyway. Use GPIO.setwarnings(False) to disable warnings.
GPIO.setup(17, GPIO.OUT)
Traceback (most recent call last):
File "client.py", line 23, in <module>
options = ibmiotf.application.ParseConfigFile("/home/pi/device.cfg")
File "/usr/local/lib/python2.7/dist-packages/ibmiotf/application.py", line 501, in ParseConfigFile
appType = parms.get(sectionHeader, "type", "standalone")
File "/usr/lib/python2.7/ConfigParser.py", line 618, in get
raise NoOptionError(option, section)
ConfigParser.NoOptionError: No option 'type' in section: 'application'
我发现错误来自缺失的＆＃34;类型＆＃34;配置文件中的部分（device.cfg）。
本教程步骤35中列出的文件结构并不是说您需要＆＃34;类型＆＃34;。我使用了之前在IoT Foundation中创建的设备类型（raspberrypi）。
现在我成功连接了IoT Foundation。
我现在遇到的问题是，当我按下Raspberry Pi上的按钮或打开/关闭＆＃34;打开/关闭灯光时，没有任何事情发生。 Web应用程序的按钮。
如果我使用＆＃34; ./ cf logs myappname -recent＆＃34;检查python应用程序的日志。我得到以下输出：
2016-01-29T08:38:49.10+0100 [App/0] OUT on
2016-01-29T08:38:49.10+0100 [App/0] ERR 75.126.37.74 - - [29/Jan/2016 07:38:49] "POST /light/on HTTP/1.1"; 302 -
2016-01-29T08:38:49.34+0100 [App/0] ERR 75.126.52.20 - - [29/Jan/2016 07:38:49] "GET / HTTP/1.1"; 200 -
2016-01-29T08:38:49.56+0100 [RTR/1] OUT myappname.mybluemix.net - [29/01/2016:07:38:49 +0000] "GET / HTTP/1.1" 200 0 751 "http://myappname.mybluemix.net/" ";Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/47.0.2526.111 Safari/537.36" 108.168.250.151:39460 x_forwarded_for:"46.5.2.236"x_forwarded_proto:"http" vcap_request_id:myrequestid response_time:0.31228492 app_id:myapp_id x_global_transaction_id:mytransactionid;
2016-01-29T08:40:08.32+0100 [App/0] OUT off
2016-01-29T08:40:08.33+0100 [App/0] ERR 75.126.37.74 - - [29/Jan/2016 07:40:08] "POST /light/off HTTP/1.1" 302 -
2016-01-29T08:40:08.51+0100 [App/0] ERR 75.126.23.243 - - [29/Jan/2016 07:40:08] "GET / HTTP/1.1" 200 -`
本教程的作者杰夫说，我应该仔细检查Pi和Bluemix中的应用程序是否都在监听同一主题。在物联网服务中，我应该能够看到消息传来。
我不知道这意味着什么或我如何做到这一点。
我们已经在博客文章（https://www.youtube.com/watch?v=YHDhn5hGnn8）的youtube视频的评论部分讨论了我的问题，Jeff告诉我，我们应该使用它移动到StackOverflow（有意义）。
感谢您的帮助。
//编辑以获取更多信息// 当我启动应用程序时，这是我在Pi上获得的输出： sudo python client.py
2016-02-01 14:36:23,221 ibmiotf.application.Client WARNING Unable to encrypt messages because TLSv1.2 is unavailable (MQTT over SSL requires at least Python v2.7.9 or 3.4 and openssl v1.0.1)
2016-02-01 14:36:23,716 ibmiotf.application.Client INFO Connected successfully: A:69wm3f:aaaafdsfsd45641safsda2313
如果我在客户端启动后第一次按下开/关按钮，我会在Pi上获得以下输出：
Exception in thread Thread-1:
Traceback (most recent call last):
File "/usr/lib/python2.7/threading.py", line 552, in __bootstrap_inner
self.run()
File "/usr/lib/python2.7/threading.py", line 505, in run
self.__target(*self.__args, **self.__kwargs)
File "/usr/local/lib/python2.7/dist-packages/paho/mqtt/client.py", line 2287, in _thread_main
self.loop_forever()
File "/usr/local/lib/python2.7/dist-packages/paho/mqtt/client.py", line 1261, in loop_forever
rc = self.loop(timeout, max_packets)
File "/usr/local/lib/python2.7/dist-packages/paho/mqtt/client.py", line 811, in loop
rc = self.loop_read(max_packets)
File "/usr/local/lib/python2.7/dist-packages/paho/mqtt/client.py", line 1073, in loop_read
rc = self._packet_read()
File "/usr/local/lib/python2.7/dist-packages/paho/mqtt/client.py", line 1475, in _packet_read
rc = self._packet_handle()
File "/usr/local/lib/python2.7/dist-packages/paho/mqtt/client.py", line 1943, in _packet_handle
return self._handle_publish()
File "/usr/local/lib/python2.7/dist-packages/paho/mqtt/client.py", line 2118, in _handle_publish
self._handle_on_message(message)
File "/usr/local/lib/python2.7/dist-packages/paho/mqtt/client.py", line 2268, in _handle_on_message
t[1](self, self._userdata, message)
File "/usr/local/lib/python2.7/dist-packages/ibmiotf/application.py", line 423, in __onDeviceEvent
if self.deviceEventCallback: self.deviceEventCallback(event)
File "client.py", line 17, in myCommandCallback
command = cmd.payload["d"]["command"]
TypeError: string indices must be integers, not str
看起来来自物联网基金会的消息正在传达给客户。
我在IoT Foundation，Bluemix Python应用程序的环境变量和Raspberry Pi上设置了以下ID：
所有三个ID都相同。
//编辑2 // 从注释部分添加print cmd语句后记录输出：
<ibmiotf.application.Event instance at 0x76526738>
light
{"command": "on"}
更改后的Stacktrace
command = cmd.payload["d"]["command"]
到
command = cmd.payload["command"]
Exception in thread Thread-1:
Traceback (most recent call last):
File "/usr/lib/python2.7/threading.py", line 552, in __bootstrap_inner
self.run()
File "/usr/lib/python2.7/threading.py", line 505, in run
self.__target(*self.__args, **self.__kwargs)
File "/usr/local/lib/python2.7/dist-packages/paho/mqtt/client.py", line 2287, in _thread_main
self.loop_forever()
File "/usr/local/lib/python2.7/dist-packages/paho/mqtt/client.py", line 1261, in loop_forever
rc = self.loop(timeout, max_packets)
File "/usr/local/lib/python2.7/dist-packages/paho/mqtt/client.py", line 811, in loop
rc = self.loop_read(max_packets)
File "/usr/local/lib/python2.7/dist-packages/paho/mqtt/client.py", line 1073, in loop_read
rc = self._packet_read()
File "/usr/local/lib/python2.7/dist-packages/paho/mqtt/client.py", line 1475, in _packet_read
rc = self._packet_handle()
File "/usr/local/lib/python2.7/dist-packages/paho/mqtt/client.py", line 1943, in _packet_handle
return self._handle_publish()
File "/usr/local/lib/python2.7/dist-packages/paho/mqtt/client.py", line 2118, in _handle_publish
self._handle_on_message(message)
File "/usr/local/lib/python2.7/dist-packages/paho/mqtt/client.py", line 2268, in _handle_on_message
t[1](self, self._userdata, message)
File "/usr/local/lib/python2.7/dist-packages/ibmiotf/application.py", line 423, in __onDeviceEvent
if self.deviceEventCallback: self.deviceEventCallback(event)
File "client.py", line 18, in myCommandCallback
command = cmd.payload["command"]
TypeError: string indices must be integers, not str
答案 0 :(得分：2)
结果改变了IBM IoT Foundation库，它解析了JSON ...
更改line 15
command = cmd.payload["d"]["command"]
到
payload = json.loads(cmd.payload)
command = payload["command"]
答案 1 :(得分：0)
我添加了一行“json.dumps”，它对我有效。
dataraw = json.dumps(cmd.data)
payload = json.loads(dataraw)
command = payload["command"]
祝你好运