JAVA使用eclipse paho订阅消息主题时出现客户端断开链接

EMQX
1

org.eclipse.paho.client.mqttv3.MqttException: 已断开连接
at org.eclipse.paho.client.mqttv3.internal.CommsReceiver.run(CommsReceiver.java:197)
at java.base/java.lang.Thread.run(Thread.java:834)
Caused by: java.io.EOFException: null
at java.base/java.io.DataInputStream.readByte(DataInputStream.java:272)
at org.eclipse.paho.client.mqttv3.internal.wire.MqttInputStream.readMqttWireMessage(MqttInputStream.java:92)
at org.eclipse.paho.client.mqttv3.internal.CommsReceiver.run(CommsReceiver.java:137)
… 1 common frames omitted

2

抱歉，我不懂 java 看不懂。