Spring Boot + MQTT: message interaction is easy to implement

Introduction
MQTT (Message Queuing Telemetry Transport) is a lightweight message transmission protocol designed for resource-constrained devices and low-bandwidth, high-latency network environments. In the field of Internet of Things (IoT), MQTT is widely used due to its low overhead and high performance.

Use
Installation instructions

Default account: admin/public, log in to the homepage:

Dependency introduction

Configuration

MQTT configuration class

Message callback, process received messages

Message publishing

Test
Start the program:

View the topic:

Publish a message: