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RabbitMQ实现即时通讯居然如此简单!连后端代码都省得写了?-CSDN博客
有时候我们的项目中会用到即时通讯功能,比如电商系统中的客服聊天功能,还有在支付过程中,当用户支付成功后,第三方支付服务会回调我们的回调接口,此时我们需要通知前端支付成功。最近发现RabbitMQ可以很方便的实现即时通讯功能,如果你没有特殊的业务需求,甚至可以不写后端代码,今天给大家讲讲如何使用RabbitMQ来实现即时通讯! MQTT(Message Queuing Telemetry Transport,消息队列遥测传输协议),是一种基于发布/订阅(publish/subscribe)模式的轻量级通讯协议,该协议构建于TCP/IP协议上。MQTT最大优点在于,可以以极少的代码和有限的带宽,为连接远程设备提供实时可靠的消息服务。 Publisher(发布者):消息的发出者,负责发送消息。 Subscriber(订阅者):消息的订阅者,负责接收并处理消息。 Broker(代理):消息代理,位于消息发布者和订阅者之间,各类支持MQTT协议的消息中间件都可以充当。 Topic(主题):可以理解为消息队列中的路由,订阅者订阅了主题之后,就可以收到发送到该主题的消息。...
springBoot接收UDP协议数据快速上手教程_spring udp
pom文件所需用到的依赖 <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-integration</artifactId> <exclusions> <exclusion> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-logging</artifactId> </exclusion> </exclusions> </dependency> <dependency> <groupId>org.springframework.integration</groupId> <artifactId>spring-integration-ip</artifactId> </dependency> 添加配置文件注入UnicastSendingMessageHandler类 新建config文件 UdpIntegrationClientConfig 加注解...
MQTT的Java代码实现_mqtt代码_程序猿小耿的博客-CSDN博客
MQTT的Java代码实现 MQTT(消息队列遥测传输)是ISO 标准(ISO/IEC PRF 20922)下基于发布/订阅]范式的消息协议。它工作在 TCP/IP协议族上,是为硬件性能低下的远程设备以及网络状况糟糕的情况下而设计的发布/订阅型消息协议,为此,它需要一个消息中间件 。 为rabbit开启mqtt 1.在yml文件中添加一个mqtt的端口映射1883:1883 restart: always container_name: rabbitmq ports: - 5672:5672 - 15672:15672 - 1883:1883 volumes: - ./data:/var/lib/rabbitmq 2.进入rabbit的docker容器内部 docker exec -it rabbitmq bash 3.rabbit内运行 rabbitmq-plugins enable rabbitmq_mqtt 4.在网页视图中查看mqtt 使用MQTT软件测试mqtt 1.连接mqtt 2.在MQTT软中添加订阅 在RabbitMQ的队列中查看 3.测试...
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