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
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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();
}
}
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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;
}
}
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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