RabbitMQ学习(十二)之spring整合发送异步消息(注解实现)

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实现使用Exchange类型为DirectExchange. routingkey的名称默认为Queue的名称。注解实现异步发送消息。

1.生产者配置ProducerConfiguration.Java

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package cn.slimsmart.rabbitmq.demo.spring.async;
import java.util.concurrent.atomic.AtomicInteger;
import org.springframework.amqp.rabbit.connection.CachingConnectionFactory;
import org.springframework.amqp.rabbit.connection.ConnectionFactory;
import org.springframework.amqp.rabbit.core.RabbitTemplate;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.config.BeanPostProcessor;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.scheduling.annotation.Scheduled;
import org.springframework.scheduling.annotation.ScheduledAnnotationBeanPostProcessor;
import com.rabbitmq.client.AMQP;
@Configuration
public class ProducerConfiguration {
// 指定队列名称 routingkey的名称默认为Queue的名称，使用Exchange类型为DirectExchange
protected final String helloWorldQueueName = "spring-queue-async";
// 创建链接
@Bean
public ConnectionFactory connectionFactory() {
CachingConnectionFactory connectionFactory = new CachingConnectionFactory("192.168.36.102");
connectionFactory.setUsername("admin");
connectionFactory.setPassword("admin");
connectionFactory.setPort(AMQP.PROTOCOL.PORT);
return connectionFactory;
}
// 创建rabbitTemplate 消息模板类
@Bean
public RabbitTemplate rabbitTemplate() {
RabbitTemplate template = new RabbitTemplate(connectionFactory());
template.setRoutingKey(this.helloWorldQueueName);
return template;
}
//创建一个调度
@Bean
public ScheduledProducer scheduledProducer() {
return new ScheduledProducer();
}
@Bean
public BeanPostProcessor postProcessor() {
return new ScheduledAnnotationBeanPostProcessor();
}
static class ScheduledProducer {
@Autowired
private volatile RabbitTemplate rabbitTemplate;
//自增整数
private final AtomicInteger counter = new AtomicInteger();
/**
* 每3秒发送一条消息
*
* Spring3中加强了注解的使用，其中计划任务也得到了增强，现在创建一个计划任务只需要两步就完成了：
创建一个Java类，添加一个无参无返回值的方法，在方法上用@Scheduled注解修饰一下；
在Spring配置文件中添加三个<task:**** />节点；
参考：http://zywang.iteye.com/blog/949123
*/
@Scheduled(fixedRate = 3000)
public void sendMessage() {
rabbitTemplate.convertAndSend("Hello World " + counter.incrementAndGet());
}
}
}

2.生产者启动类Producer,java

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package cn.slimsmart.rabbitmq.demo.spring.async;
import org.springframework.context.annotation.AnnotationConfigApplicationContext;
public class Producer {
public static void main(String[] args) {
new AnnotationConfigApplicationContext(ProducerConfiguration.class);
}
}

3.接收消息处理类ReceiveMsgHandler.java

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package cn.slimsmart.rabbitmq.demo.spring.async;
public class ReceiveMsgHandler {
public void handleMessage(String text) {
System.out.println("Received: " + text);
}
}

4.消费者配置ConsumerConfiguration

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package cn.slimsmart.rabbitmq.demo.spring.async;
import org.springframework.amqp.core.AmqpAdmin;
import org.springframework.amqp.core.Queue;
import org.springframework.amqp.rabbit.connection.CachingConnectionFactory;
import org.springframework.amqp.rabbit.connection.ConnectionFactory;
import org.springframework.amqp.rabbit.core.RabbitAdmin;
import org.springframework.amqp.rabbit.core.RabbitTemplate;
import org.springframework.amqp.rabbit.listener.SimpleMessageListenerContainer;
import org.springframework.amqp.rabbit.listener.adapter.MessageListenerAdapter;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import com.rabbitmq.client.AMQP;
public class ConsumerConfiguration {
// 指定队列名称 routingkey的名称默认为Queue的名称，使用Exchange类型为DirectExchange
protected String springQueueDemo = "spring-queue-async";
// 创建链接
@Bean
public ConnectionFactory connectionFactory() {
CachingConnectionFactory connectionFactory = new CachingConnectionFactory(
"192.168.36.102");
connectionFactory.setUsername("admin");
connectionFactory.setPassword("admin");
connectionFactory.setPort(AMQP.PROTOCOL.PORT);
return connectionFactory;
}
// 创建rabbitAdmin 代理类
@Bean
public AmqpAdmin amqpAdmin() {
return new RabbitAdmin(connectionFactory());
}
// 创建rabbitTemplate 消息模板类
@Bean
public RabbitTemplate rabbitTemplate() {
RabbitTemplate template = new RabbitTemplate(connectionFactory());
// The routing key is set to the name of the queue by the broker for the
// default exchange.
template.setRoutingKey(this.springQueueDemo);
// Where we will synchronously receive messages from
template.setQueue(this.springQueueDemo);
return template;
}
//
// Every queue is bound to the default direct exchange
public Queue helloWorldQueue() {
return new Queue(this.springQueueDemo);
}
@Bean
public SimpleMessageListenerContainer listenerContainer() {
SimpleMessageListenerContainer container = new SimpleMessageListenerContainer();
container.setConnectionFactory(connectionFactory());
container.setQueueNames(this.springQueueDemo);
container.setMessageListener(new MessageListenerAdapter(
new ReceiveMsgHandler()));
return container;
}
}

5.消费者启动类Consumer.java

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package cn.slimsmart.rabbitmq.demo.spring.async;
import org.springframework.context.annotation.AnnotationConfigApplicationContext;
public class Consumer {
public static void main(String[] args) {
new AnnotationConfigApplicationContext(ConsumerConfiguration.class);
}
}

启动接收消息，再发送消息

[sql] view plain copy print?

Received: Hello World 1
Received: Hello World 2
Received: Hello World 3
Received: Hello World 4
Received: Hello World 5
Received: Hello World 6
Received: Hello World 7
......

若报spring-queue-async消息队列不存在，请在控制台添加。

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