SpringBoot2.0之整合ActiveMQ（发布订阅模式）

发布订阅模式与前面的点对点模式很类似，简直一毛一样

注意：发布订阅模式 先启动消费者

公用pom：

<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.toov5</groupId>
  <artifactId>springboot-topic-producer</artifactId>
  <version>0.0.1-SNAPSHOT</version>
  <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.0.1.RELEASE</version>
    </parent>
    <!-- 管理依赖 -->
    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-dependencies</artifactId>
                <version>Finchley.M7</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
        </dependencies>
    </dependencyManagement>
    <dependencies>
        <!-- SpringBoot整合Web组件 -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <!-- SpringBoot Activemq -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-activemq</artifactId>
        </dependency>
    </dependencies>
    <!-- 注意： 这里必须要添加， 否者各种依赖有问题 -->
    <repositories>
        <repository>
            <id>spring-milestones</id>
            <name>Spring Milestones</name>
            <url>https://repo.spring.io/libs-milestone</url>
            <snapshots>
                <enabled>false</enabled>
            </snapshots>
        </repository>
    </repositories>
</project>

　与上一篇博客类似的：改改就欧克了 猜猜都知道该怎么玩

　yml：

spring:
  activemq:
    broker-url: tcp://192.168.91.6:61616
    user: admin
    password: admin
my_topic: springboot-topic-toov5
server:
  port: 8081

　　config

package com.toov5.config;

import javax.jms.Topic;

import org.apache.activemq.command.ActiveMQTopic;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.stereotype.Component;

@Component
public class ConfigQueue {
   @Value("${my_topic}")
   private String myTopic;

    //首先将队列注入到SpringBoot容器中去
    @Bean
    public Topic queue() {
        return new ActiveMQTopic(myTopic);
    } 

}

producer

package com.toov5.topicProducer;

import javax.jms.Topic;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.jms.core.JmsMessagingTemplate;
import org.springframework.scheduling.annotation.Scheduled;
import org.springframework.stereotype.Component;

@Component
public class TopicProducer {
    @Autowired
    private JmsMessagingTemplate jmsMessagingTemplate;
    //把队列注入进来
    @Autowired  //此注解默认是以类型找  在配置文件中 已经注入的  @Bean
    private Topic topic;

    //每隔5s时间向队列发送消息
    @Scheduled(fixedDelay=5000)  //每间隔2s向队列发送消息
    public void send() {
        String msgString = System.currentTimeMillis()+" ";
        jmsMessagingTemplate.convertAndSend(topic,msgString);
        System.out.println("发布订阅通讯，msg"+msgString);
    }
}

创建producer maven

SpringBoot 默认开启点对点的！！！！ 订阅模式需要手动！！！！！

yml中： 

#### 开启发布订阅
jms:
pub-sub-domain: true

yml：

spring:
  activemq:
    broker-url: tcp://192.168.91.6:61616
    user: admin
    password: admin
my_queue: springboot-queue-toov5
server:
  port: 8080　　

consumer

package com.toov5.activemqConsumer;

import org.springframework.jms.annotation.JmsListener;
import org.springframework.stereotype.Component;

@Component
public class P2PConsumer {

    @JmsListener(destination= "${my_queue}")    //用这个注解去监听 监听的队列
    public void receiver(String msg) {
        System.out.println("消费者成功获取到生产者的消息，msg"+msg);
    }

}

启动类

package com.toov5.activemqConsumer;

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

@SpringBootApplication
public class AppConsumer {

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

}

先启动消费者 然后启动生产者，多开几个端口玩玩集群~