Mqtt 连接失败，'Not authorized to connect (5)'安卓异常

Question

嗨，我正在尝试使用刚刚注册的安卓设备连接到 mqtt，但我不断收到错误

Not authorized to connect (5)

这是我的一些代码

client = new MqttAndroidClient(context, connectionURI, clientID);
client.setCallback(callbacks);
String username = IOT_DEVICE_USERNAME;
char[] password = this.getAuthorizationToken().toCharArray();
MqttConnectOptions options = new MqttConnectOptions();
options.setCleanSession(true);
options.setUserName(username);
options.setPassword(password);
Log.d(TAG, "Connecting to server: " + connectionURI);
try {
// connect
return client.connect(options, context, listener);
} catch (MqttException e) {
Log.e(TAG, "Exception caught while attempting to connect to server", e.getCause());
throw e;
}

其中IOT_DEVICE_USERNAME是字符串"use-token-auth">，connectionUri是">tcp://<"organization">.messaging.internetofthings.ibmcloud.com:8883">

其他有趣的是，在此错误之前，我得到了此日志

Unregister alarmreceiver to MqttServiced:<"organisation">:<"DeviceType">:<"deviceId">

这是错误的堆栈跟踪

07-06 12:27:24.214 9009-9009/wibicom.wibeacon3 W/System.err: Not authorized to connect (5)
07-06 12:27:24.214 9009-9009/wibicom.wibeacon3 W/System.err:     at org.eclipse.paho.client.mqttv3.internal.ExceptionHelper.createMqttException(ExceptionHelper.java:28)
07-06 12:27:24.214 9009-9009/wibicom.wibeacon3 W/System.err:     at org.eclipse.paho.client.mqttv3.internal.ClientState.notifyReceivedAck(ClientState.java:988)
07-06 12:27:24.214 9009-9009/wibicom.wibeacon3 W/System.err:     at org.eclipse.paho.client.mqttv3.internal.CommsReceiver.run(CommsReceiver.java:140)
07-06 12:27:24.214 9009-9009/wibicom.wibeacon3 W/System.err:     at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:422)
07-06 12:27:24.214 9009-9009/wibicom.wibeacon3 W/System.err:     at java.util.concurrent.FutureTask.run(FutureTask.java:237)
07-06 12:27:24.214 9009-9009/wibicom.wibeacon3 W/System.err:     at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:152)
07-06 12:27:24.214 9009-9009/wibicom.wibeacon3 W/System.err:     at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:265)
07-06 12:27:24.214 9009-9009/wibicom.wibeacon3 W/System.err:     at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1112)
07-06 12:27:24.214 9009-9009/wibicom.wibeacon3 W/System.err:     at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:587)
07-06 12:27:24.214 9009-9009/wibicom.wibeacon3 W/System.err:     at java.lang.Thread.run(Thread.java:818)

Answer 1

我发现了这个错误：

令牌身份验证失败(在数据库中找不到设备/网关)：客户端 ID='d：4rxa4d：AndroidDevice：1c39476b8dd0'

您是否为 AndroidDevice 创建了设备类型，并在 Watson IoT Platform 中将 ID 1c39476b8dd0 注册到您的组织？

本教程介绍如何注册设备。

Answer 2

问题已修复。我确实使用它作为客户端 ID 作为 MqttAndroidClient 对象的构造函数的输入。

String iotClientId = "d:"+ORG+":"+DEVICE_TYPE+":"+DEVICE_ID;

但是，由于我将Android设备注册为网关，因为它实际上连接到传感器实际所在的多个外围设备。为了解决这个问题，我将上面的行

String iotClientId = "g:"+ORG+":"+DEVICE_TYPE+":"+DEVICE_ID;