Failed to publish to MQTT in the [bean 'mqttOutbound'; defined in: 'class path resource [xxx]'; from source: 'xxx']; nested exception is Too many publishes in progress (32202)
修改maxInflight的默认值,例如将其修改为50
``` MqttConnectOptions mqttConnectOptions = new MqttConnectOptions(); mqttConnectOptions.setMaxInflight(50); ```