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springboot如何实现rabbitmq的队列初始化和绑定
配置文件，在rabbit中自动建立exchange,queue和绑定它们的关系
- 代码里初始化exchange
- 代码里初始化queue
- 代码里绑定exchange,queue和routekey
- 配置文件，直接声明vhost
代码里初始化exchange
/**
* rabbitMq里初始化exchange.
*
* @return
*/
@Bean
public TopicExchange crmExchange() {
return new TopicExchange(EXCHANGE);
}
代码里初始化queue
/**
* rabbitMq里初始化队列crm.hello.
*
* @return
*/
@Bean
public Queue helloQueue() {
return new Queue(HELLO);
}
代码里绑定exchange,queue和routekey
/**
* 绑定exchange & queue & routekey.
*
* @param queueMessage 队列
* @param exchange 交换机
* @param routekey 路由
* @return
*/
public Binding bindingExchange(Queue queueMessage, TopicExchange exchange, String routekey) {
return BindingBuilder.bind(queueMessage).to(exchange).with(routekey);
}
配置文件
spring: rabbitmq: host: localhost port: 5672 username: guest password: guest virtual-host: lind
完整代码
package com.lind.microservice.productCenter.mq;
import org.springframework.amqp.core.Binding;
import org.springframework.amqp.core.BindingBuilder;
import org.springframework.amqp.core.Queue;
import org.springframework.amqp.core.TopicExchange;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
/**
* amqp配置.
*/
@Configuration
public class AmqpConfig {
/**
* 交换机.
*/
public final static String EXCHANGE = "crm";
/**
* hello队列.
*/
public final static String HELLO = "crm.hello";
/**
* 建立订单队列.
*/
public final static String LIND_GENERATE_ORDER = "crm.generate.order";
/**
* 绑定exchange & queue & routekey.
*
* @param queueMessage 队列
* @param exchange 交换机
* @param routekey 路由
* @return
*/
public Binding bindingExchange(Queue queueMessage, TopicExchange exchange, String routekey) {
return BindingBuilder.bind(queueMessage).to(exchange).with(routekey);
}
/**
* rabbitMq里初始化exchange.
*
* @return
*/
@Bean
public TopicExchange crmExchange() {
return new TopicExchange(EXCHANGE);
}
/**
* rabbitMq里初始化队列crm.hello.
*
* @return
*/
@Bean
public Queue helloQueue() {
return new Queue(HELLO);
}
/**
* rabbitMq里初始化队列crm.generate.order.
*
* @return
*/
@Bean
public Queue orderQueue() {
return new Queue(LIND_GENERATE_ORDER);
}
}
队列发布者
package com.lind.microservice.productCenter.mq;
import java.util.Date;
import org.springframework.amqp.core.AmqpTemplate;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Configuration;
@Configuration
public class HelloPublisher {
@Autowired
AmqpTemplate rabbitTemplate;
@Autowired
AmqpConfig amqpConfig;
public void hello() {
String context = "hello " + new Date();
System.out.println("HelloPublisher : " + context);
amqpConfig.bindingExchange(
amqpConfig.helloQueue(),
amqpConfig.crmExchange(),
"crm.hello.#"
);
this.rabbitTemplate.convertAndSend(AmqpConfig.EXCHANGE, AmqpConfig.HELLO, context);
}
}
队列订阅者
package com.lind.microservice.productCenter.mq;
import org.springframework.amqp.rabbit.annotation.RabbitHandler;
import org.springframework.amqp.rabbit.annotation.RabbitListener;
import org.springframework.stereotype.Component;
@Component
@RabbitListener(queues = AmqpConfig.HELLO)
public class HelloSubscriber {
@RabbitHandler
public void process(String hello) {
System.out.println("HelloSubscriber : " + hello);
}
}
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