Springboot简单整合Rabbit

两个项目。分别是生产者和消费者项目

。首先引入依赖。两边pom都一样

第一次练习，启动生产者后，再启动消费者，一直报找不到 队列的声明。

后排查发现是  需要现在生产者这边浏览器访问一次生产消息的方法，以让交换机和队列在rabbit服务器生成。

因为交换机的生成属于懒加载。不发送消息是不生成交换机的。所以开始直接启动消费者会报错 找不到队列的声明

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
  <modelVersion>4.0.0</modelVersion>
  <groupId>com.kf</groupId>
  <artifactId>consumer-springboot</artifactId>
  <version>0.0.1-SNAPSHOT</version>

  <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.0.0.RELEASE</version>
    </parent>
  <dependencies>

        <!-- springboot-web组件 -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <!-- 添加springboot对amqp的支持 -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-amqp</artifactId>
        </dependency>
        <dependency>
            <groupId>org.apache.commons</groupId>
            <artifactId>commons-lang3</artifactId>
        </dependency>
        <!--fastjson -->
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>fastjson</artifactId>
            <version>1.2.49</version>
        </dependency>
    </dependencies>
</project>

生产者这边写入Fanout的配置

package com.kf.conf;

import org.springframework.amqp.core.Binding;
import org.springframework.amqp.core.BindingBuilder;
import org.springframework.amqp.core.FanoutExchange;
import org.springframework.amqp.core.Queue;
import org.springframework.context.annotation.Bean;
import org.springframework.stereotype.Component;

/**
 * Fanout配置
 * @author kf
 *
 */
@Component
public class FanoutConf {
    /**
     * fanout没有路由键
     * 1：定义队列名，交换机名
     * 2：注册队列，交换机
     * 3：绑定队列和交换机
     */

    private String QUEUE_SMS = "QUEUE_SMS";

    private String QUEUE_EMAIL = "QUEUE_EMAIL";

    private String FANOUTEXCHANGE = "FANOUTEXCHANGE";

    //注册短信队列
    @Bean
    public Queue queueSms(){
        return new Queue(QUEUE_SMS);
    }
    //注册邮件队列
    @Bean
    public Queue queueEmail(){
        return new Queue(QUEUE_EMAIL);
    }

    //注册交换机
    @Bean
    public FanoutExchange fanoutExchange(){
        return new FanoutExchange(FANOUTEXCHANGE);
    }

    //绑定队列和交换机
    /**
     *
     * @param queueSms  此参数用的是上方定义队列的方法名，注册Bean时，默认方法名为该Bean的id
     * @param fanoutExchange 此参数用的是上方定义队列的方法名，注册Bean时，默认方法名为该Bean的id
     * @return
     */
    @Bean
    public Binding bindgFanoutExchangeSms(Queue queueSms, FanoutExchange fanoutExchange){
        return BindingBuilder.bind(queueSms).to(fanoutExchange);
    }

    @Bean
    public Binding bindgFanoutExchangeEmail(Queue queueEmail, FanoutExchange fanoutExchange){
        return BindingBuilder.bind(queueEmail).to(fanoutExchange);
    }

}

创建消息发送的templet：

package com.kf.producer;

import org.springframework.amqp.core.AmqpTemplate;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;

@Component
public class FanoutProducer {

    @Autowired
    private AmqpTemplate amqpTemplate;

    public void sendMes(String queueName){
        System.out.println("队列名："+queueName);
        String msg = "此处是fanout的消息体";
        amqpTemplate.convertAndSend(queueName, msg);
    }

}

创建controller：

package com.kf.controller;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import com.kf.producer.FanoutProducer;

@RestController
public class ProducerController {
    @Autowired
    private FanoutProducer fanoutProducer;

    @RequestMapping("/sendFanout")
    public String sendFanoutMessage(String queueName){
        fanoutProducer.sendMes(queueName);
        return "success";
    }

}

创建启动：

package com.kf;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

@SpringBootApplication
public class ProducerMainClass {
    public static void main(String[] args) {
        SpringApplication.run(ProducerMainClass.class, args);
    }

}

引入rabbit的链接配置

spring:
  rabbitmq:
  ####ip
    host: 127.0.0.1
   ####端口
    port: 5672
   ####用户名
    username: guest
   ####密码
    password: guest
   ### 虚拟主机
    virtual-host: /kf

消费者工程：

package com.kf.consumer.sms;

import org.springframework.amqp.rabbit.annotation.RabbitHandler;
import org.springframework.amqp.rabbit.annotation.RabbitListener;
import org.springframework.stereotype.Component;

@Component
@RabbitListener(queues = "QUEUE_SMS")
public class SmsConsumer {

    //监听队列消息注解
    @RabbitHandler
    public void accept(String msg){
        System.out.println("短信消费者接收消息："+msg);

    } 

}

package com.kf.consumer.email;

import org.springframework.amqp.rabbit.annotation.RabbitHandler;
import org.springframework.amqp.rabbit.annotation.RabbitListener;
import org.springframework.stereotype.Component;
@Component
@RabbitListener(queues = "QUEUE_EMAIL")
public class EmailConsumer {

    //监听队列消息注解
    @RabbitHandler
    public void accept(String msg){
        System.out.println("邮件消费者接收到："+msg);

    } 

}

创建启动：

package com.kf;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

@SpringBootApplication
public class ConsumerMainClass {
    public static void main(String[] args) {
        SpringApplication.run(ConsumerMainClass.class, args);
    }

}

创建链接。注意启动端口号：

spring:
  rabbitmq:
  ####ip
    host: 127.0.0.1
   ####端口
    port: 5672
   ####用户名
    username: guest
   ####密码
    password: guest
   ### 虚拟主机
    virtual-host: /kf

server:
  port: 8081