spring boot 集成 RabbitMq还是很方便的。现在来一个简单的例子来集成rabbitmq。入门demo。
主要概念:
其中比较重要的概念有 4 个,分别为:虚拟主机,交换机,队列,和绑定。
虚拟主机:一个虚拟主机持有一组交换机、队列和绑定。为什么需要多个虚拟主机呢?很简单,RabbitMQ当中,用户只能在虚拟主机的粒度进行权限控制。 因此,如果需要禁止A组访问B组的交换机/队列/绑定,必须为A和B分别创建一个虚拟主机。每一个RabbitMQ服务器都有一个默认的虚拟主机“/”。
交换机:Exchange 用于转发消息,但是它不会做存储 ,如果没有 Queue bind 到 Exchange 的话,它会直接丢弃掉 Producer 发送过来的消息。 这里有一个比较重要的概念:路由键 。消息到交换机的时候,交互机会转发到对应的队列中,那么究竟转发到哪个队列,就要根据该路由键。
绑定:也就是交换机需要和队列相绑定,这其中如上图所示,是多对多的关系。
首先是配制文件。
#spring.application.name=spring-boot-rabbitmq spring.rabbitmq.host=127.0.0.1 spring.rabbitmq.port=5672 spring.rabbitmq.username=guest spring.rabbitmq.password=guest
发送者:
package com.basic.rabbitmq.send; import com.basic.rabbitmq.configuration.RabbitMqConfig2; import org.springframework.amqp.core.AmqpTemplate; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Component; import org.springframework.stereotype.Service; import java.util.Date; /** * Created by sdc on 2017/6/17. */ @Service("helloSender") public class HelloSender { @Autowired private AmqpTemplate amqpTemplate; // private Rabbitt public void send() { String contenxt = "order_queue_message"; this.amqpTemplate.convertAndSend(RabbitMqConfig2.QUEUE_EXCHANGE_NAME,"order_queue_routing",contenxt); // this.amqpTemplate.conver } }
配制信息:
package com.basic.rabbitmq.configuration; import com.basic.rabbitmq.receiver.Receiver; import com.rabbitmq.client.Channel; import com.rabbitmq.client.ConfirmListener; import org.springframework.amqp.core.*; import org.springframework.amqp.rabbit.connection.CachingConnectionFactory; import org.springframework.amqp.rabbit.connection.ConnectionFactory; import org.springframework.amqp.rabbit.core.ChannelAwareMessageListener; import org.springframework.amqp.rabbit.listener.MessageListenerContainer; 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 java.io.IOException; /** * Created by sdc on 2017/6/17. */ @Configuration public class RabbitMqConfig2 { public static final String QUEUE_NAME = "order_queue"; public static final String QUEUE_EXCHANGE_NAME = "topic_exchange_new"; public static final String routing_key = "order_queue_routing"; @Bean public Queue queue() { //是否持久化 boolean durable = false; //仅创建者可以使用该队列,断开后自动删除 boolean exclusive = false; //当所有消费者都断开连接后,是否删除队列 boolean autoDelete = false; return new Queue(QUEUE_NAME, durable, exclusive, autoDelete); } @Bean public TopicExchange exchange() { //是否持久化 boolean durable = false; //当所有消费者都断开连接后,是否删除队列 boolean autoDelete = false; return new TopicExchange(QUEUE_EXCHANGE_NAME, durable, autoDelete); } @Bean public Binding binding() { return BindingBuilder.bind(queue()).to(exchange()).with(routing_key); } @Bean public ConnectionFactory connectionFactory() { CachingConnectionFactory connectionFactory = new CachingConnectionFactory("127.0.0.1",5672); connectionFactory.setUsername("admin"); connectionFactory.setPassword("admin"); connectionFactory.setVirtualHost("/"); /** 如果要进行消息回调,则这里必须要设置为true */ connectionFactory.setPublisherConfirms(true); // 必须要设置 // connectionFactory.setPublisherReturns(); return connectionFactory; } @Bean SimpleMessageListenerContainer container() { SimpleMessageListenerContainer container = new SimpleMessageListenerContainer(); container.setConnectionFactory(connectionFactory()); // container.setQueueNames(QUEUE_NAME); container.setQueues(queue()); container.setAcknowledgeMode(AcknowledgeMode.MANUAL); //设置确认模式手工确认 container.setMessageListener(new ChannelAwareMessageListener() { @Override public void onMessage(Message message, Channel channel) throws Exception { byte[] body = message.getBody(); System.out.println("收到消息 : " + new String(body)); channel.queueDeclare(QUEUE_NAME, true, false, false, null); // channel.basicAck(message.getMessageProperties().getDeliveryTag(), false); //确认消息成功消费 // channel.basicAck(); //应答 // channel.basicReject();//拒绝 // channel.basicRecover(); //恢复 // channel.basicQos(); // channel.addConfirmListener(new ConfirmListener() { // @Override // public void handleAck(long deliveryTag, boolean multiple) throws IOException { // //失败重发 // } // // @Override // public void handleNack(long deliveryTag, boolean multiple) throws IOException { // //确认ok // } // }); } }); return container; } // @Bean // MessageListenerAdapter listenerAdapter(Receiver receiver) { // return new MessageListenerAdapter(receiver, "receiveMessage"); // } }
测试类:
package com.rabbit.test; import com.basic.rabbitmq.send.HelloSender; import com.basic.system.Application; import org.junit.Test; import org.junit.runner.RunWith; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.boot.test.context.SpringBootTest; import org.springframework.test.context.junit4.SpringRunner; import javax.annotation.Resource; /** * Created by sdc on 2017/6/17. */ @RunWith(SpringRunner.class) @SpringBootTest(classes = Application.class) public class RabbitMqTest { @Autowired public HelloSender helloSender; @Test public void helloword() throws Exception { helloSender.send(); } }
这只是一个demo,学习的时候会测试各种的事情,在这基础上更改就可以了,心中的疑虑测试没了就可以写一些项目了。
时间: 2024-10-02 02:07:26