摘要
整合场景含 topic 工作模式(通过 routingKey 可满足简单/工作队列/发布订阅/路由等四种工作模式)和 confirm(消息确认)、return(消息返回)、basicAck(消息签收)、basicNack(拒绝签收)、DLX(Dead Letter Exchange死信队列)实现延时/定时任务等。
整合
依赖与配置
以下内容消费者同生产者
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< parent > < groupId >org.springframework.boot</ groupId > < artifactId >spring-boot-starter-parent</ artifactId > < version >2.1.4.RELEASE</ version > </ parent > < dependencies > < dependency > < groupId >org.springframework.boot</ groupId > < artifactId >spring-boot-starter-amqp</ artifactId > </ dependency > < dependency > < groupId >org.springframework.boot</ groupId > < artifactId >spring-boot-starter-web</ artifactId > </ dependency > </ dependencies > |
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server.port=8090 spring.rabbitmq.host=192.168.168.10 spring.rabbitmq.port=5672 spring.rabbitmq.username=zheng123 spring.rabbitmq.password=zheng123 spring.rabbitmq.virtual-host=/zheng spring.rabbitmq.publisher-confirms=true spring.rabbitmq.publisher-returns=true spring.rabbitmq.listener.direct.acknowledge-mode=manual |
生产者配置消息队列规则
下边是两种配置方式,本次整合示例中使用第一个配置
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@Configuration public class TopicConfig { // 声明队列 @Bean public Queue topicQ1() { return new Queue( "topic_sb_mq_q1" ); } // 声明队列并绑定该队列到死信交换机(返回值有两种写法,任选一种都可以) // 测试死信需要关闭原队列的监听 @Bean public Queue topicQ2() { return QueueBuilder.durable( "topic_sb_mq_q2" ) .withArgument( "x-dead-letter-exchange" , "topicExchange" ) .withArgument( "x-dead-letter-routing-key" , "changsha.f" ) .withArgument( "x-message-ttl" , 10000 ) .build(); Map<String,Object> arguments = new HashMap<>( 2 ); arguments.put( "x-dead-letter-exchange" , "topicExchange" ); arguments.put( "x-dead-letter-routing-key" , "changsha.f" ); arguments.put( "x-message-ttl" , 10000 ); return new Queue( "topic_sb_mq_q2" , true , false , false ,arguments); } //声明exchange @Bean public TopicExchange setTopicExchange() { return new TopicExchange( "topicExchange" ); } //声明binding,需要声明一个routingKey @Bean public Binding bindTopicHebei1() { return BindingBuilder.bind(topicQ1()).to(setTopicExchange()).with( "changsha.*" ); } @Bean public Binding bindTopicHebei2() { return BindingBuilder.bind(topicQ2()).to(setTopicExchange()).with( "#.beijing" ); } } |
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@Configuration public class RabbitMqConfig { //定义交换机的名字 public static final String EXCHANGE_NAME = "boot_topic_exchange" ; //定义队列的名字 public static final String QUEUE_NAME = "boot_queue" ; //1、声明交换机 @Bean ( "bootExchange" ) public Exchange bootExchange(){ return ExchangeBuilder.topicExchange(EXCHANGE_NAME).durable( true ).build(); } //2、声明队列 @Bean ( "bootQueue" ) public Queue bootQueue(){ return QueueBuilder.durable(QUEUE_NAME).build(); } //3、队列与交换机进行绑定 @Bean public Binding bindQueueExchange( @Qualifier ( "bootQueue" ) Queue queue, @Qualifier ( "bootExchange" ) Exchange exchange){ // topic模式兼容广播模式,路由模式。with("#")则类似广播模式匹配所有订阅者;with("boot.1")则类似路由模式匹配指定订阅者 return BindingBuilder.bind(queue).to(exchange).with( "boot.#" ).noargs(); } } |
生产者发布消息
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@RestController public class ProducerController { @Autowired private RabbitTemplate rabbitTemplate; @GetMapping (value= "/topicSend" ) public Object topicSend(String routingKey,String message) throws AmqpException, UnsupportedEncodingException { // 定义 confirm 回调 rabbitTemplate.setConfirmCallback((correlationData, ack, cause) -> { if (ack) { // confirmed } else { // nack-ed } }); rabbitTemplate.setMandatory( true ); rabbitTemplate.setReturnCallback((msg, replyCode, replyText, exchange, routKey)->{ // return message }); if ( null == routingKey) { routingKey= "changsha.kf" ; } MessageProperties messageProperties = new MessageProperties(); messageProperties.setContentType(MessageProperties.CONTENT_TYPE_TEXT_PLAIN); //fanout模式只往exchange里发送消息。分发到exchange下的所有queue rabbitTemplate.send( "topicExchange" , routingKey, new Message(message.getBytes( "UTF-8" ),messageProperties)); return "message sended : routingKey >" +routingKey+ ";message > " +message; } } |
消费者监听消息
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@Component public class ConcumerReceiver { //topic 模式 //注意这个模式会有优先匹配原则。例如发送routingKey=hunan.IT,那匹配到hunan.*(hunan.IT,hunan.eco),之后就不会再去匹配*.ITd @RabbitListener (queues= "topic_sb_mq_q1" ) public void topicReceiveq1(String msg,Message message, Channel channel) throws IOException { // 消息id long deliveryTag = message.getMessageProperties().getDeliveryTag(); try { // message.getBody() todosomething // 签收消息 channel.basicAck(deliveryTag, true ); } catch (Exception e) { // 拒绝签收 // 第三个参数:requeue:重回队列。如果设置为true,则消息重新回到queue,broker会重新发送该消息给消费端 channel.basicNack(deliveryTag, true , true ); } } @RabbitListener (queues= "topic_sb_mq_q2" ) public void topicReceiveq2(String message) { System.out.println( "Topic模式 topic_sb_mq_q2 received message : " +message); } } |
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原文链接:https://juejin.cn/post/7007641887821529119