springboot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

1. 代码里初始化exchange
2. 代码里初始化queue
3. 代码里绑定exchange,queue和routekey
4. 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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