环境信息
- EMQX 版本：4.3.8
- 操作系统及版本：Linux
- 其他
问题描述
线下项目连接正常，部署到阿里云服务器的项目也正常连接，仅在安装emqx的服务器上部署的项目连接不上。
配置文件及日志
2022-09-02 14:55:06.788 ERROR 1 — [ main] c.z.iotplatfrom.util.mqtt.MQTTListener : Unable to connect to server
org.eclipse.paho.client.mqttv3.MqttException: Unable to connect to server
at org.eclipse.paho.client.mqttv3.internal.TCPNetworkModule.start(TCPNetworkModule.java:80) ~[org.eclipse.paho.client.mqttv3-1.2.5.jar:na]
at org.eclipse.paho.client.mqttv3.internal.ClientComms$ConnectBG.run(ClientComms.java:724) ~[org.eclipse.paho.client.mqttv3-1.2.5.jar:na]
at java.base/java.lang.Thread.run(Thread.java:829) ~[na:na]
Caused by: java.net.ConnectException: Connection refused (Connection refused)
at java.base/java.net.PlainSocketImpl.socketConnect(Native Method) ~[na:na]
at java.base/java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:399) ~[na:na]
at java.base/java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:242) ~[na:na]
at java.base/java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:224) ~[na:na]
at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) ~[na:na]
at java.base/java.net.Socket.connect(Socket.java:609) ~[na:na]
at org.eclipse.paho.client.mqttv3.internal.TCPNetworkModule.start(TCPNetworkModule.java:74) ~[org.eclipse.paho.client.mqttv3-1.2.5.jar:na]
… 2 common frames omitted
