Rabbitmq与spring整合之重要组件介绍——AMQP声明式配置&RabbitTemplate组件

上一节是使用rabbitAdmin的管理组件进行声明队列，交换器，绑定等操作，本节则是采用AMQP声明式配置来声明这些东西。AMQP声明主要是通过@Bean注解进行的。

配置：

 package com.zxy.demo.config;

 import org.springframework.amqp.core.Binding;
 import org.springframework.amqp.core.BindingBuilder;
 import org.springframework.amqp.core.DirectExchange;
 import org.springframework.amqp.core.FanoutExchange;
 import org.springframework.amqp.core.Queue;
 import org.springframework.amqp.core.TopicExchange;
 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.context.annotation.Bean;
 import org.springframework.context.annotation.ComponentScan;
 import org.springframework.context.annotation.Configuration;

 @Configuration
 @ComponentScan(basePackages= {"com.zxy.demo.*"})
 public class RabbitmqCofing {
 //    注入连接工厂，spring的配置，springboot可以配置在属性文件中
     @Bean
     public ConnectionFactory connectionFactory() {
         CachingConnectionFactory connection = new CachingConnectionFactory();
         connection.setAddresses("192.168.10.110:5672");
         connection.setUsername("guest");
         connection.setPassword("guest");
         connection.setVirtualHost("/");
         return connection;
     }
 //    配置RabbitAdmin来管理rabbit
     @Bean
     public RabbitAdmin rabbitAdmin(ConnectionFactory connectionFactory) {
         RabbitAdmin rabbitAdmin = new RabbitAdmin(connectionFactory);
         //用RabbitAdmin一定要配置这个，spring加载的是后就会加载这个类================特别重要
         rabbitAdmin.setAutoStartup(true);
         return rabbitAdmin;
     }
 //===========================以上结合测试rabbitAdmin部分===========================================================    

 //===========================以下为AMQP配置队列绑定等，spring容器加载时候就能够注入===========================================================
 //    采用AMQP定义队列、交换器、绑定等
     @Bean(name="direct.queue01")
     public Queue queue001() {
         return new Queue("direct.queue01", true, false, false);
     }
     @Bean(name="test.direct01")
     public DirectExchange directExchange() {
         return new DirectExchange("test.direct01", true, false, null);
     }
     @Bean
     public Binding bind001() {
         return BindingBuilder.bind(queue001()).to(directExchange()).with("mq.#");
     }
     @Bean(name="topic.queue01")
     public Queue queue002() {
         return new Queue("topic.queue01", true, false, false);
     }
     @Bean(name="test.topic01")
     public TopicExchange topicExchange() {
         return new TopicExchange("test.topic01", true, false, null);
     }
     @Bean
     public Binding bind002() {
         return BindingBuilder.bind(queue002()).to(topicExchange()).with("mq.topic");
     }
     @Bean(name="fanout.queue01")
     public Queue queue003() {
         return new Queue("fanout.queue", true, false, false);
     }
     @Bean(name="test.fanout01")
     public FanoutExchange fanoutExchange() {
         return new FanoutExchange("test.fanout01", true, false, null);
     }
     @Bean
     public Binding bind003() {
         return BindingBuilder.bind(queue003()).to(fanoutExchange());
     }

 //===========================注入rabbitTemplate组件===========================================================
 //    跟spring整合注入改模板，跟springboot整合的话只需要在配置文件中配置即可
     @Bean
     public RabbitTemplate rabbitTemplate(ConnectionFactory connectionFactory) {
         RabbitTemplate rabbitTemplate = new RabbitTemplate(connectionFactory);
         return rabbitTemplate;
     }
 }

单元测试：

 package com.zxy.demo;

 import org.junit.Test;
 import org.junit.runner.RunWith;
 import org.springframework.amqp.AmqpException;
 import org.springframework.amqp.core.Binding;
 import org.springframework.amqp.core.BindingBuilder;
 import org.springframework.amqp.core.DirectExchange;
 import org.springframework.amqp.core.FanoutExchange;
 import org.springframework.amqp.core.Message;
 import org.springframework.amqp.core.MessageDeliveryMode;
 import org.springframework.amqp.core.MessagePostProcessor;
 import org.springframework.amqp.core.MessageProperties;
 import org.springframework.amqp.core.Queue;
 import org.springframework.amqp.core.TopicExchange;
 import org.springframework.amqp.rabbit.core.RabbitAdmin;
 import org.springframework.amqp.rabbit.core.RabbitTemplate;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.boot.test.context.SpringBootTest;
 import org.springframework.test.context.junit4.SpringRunner;

 @RunWith(SpringRunner.class)
 @SpringBootTest
 public class ForwardApplicationTests {

     @Test
     public void contextLoads() {
     }
     @Autowired
     private RabbitAdmin rabbitAdmin;
     @Test
     public void testAdmin() {
 //        切记命名不能重复复
         rabbitAdmin.declareQueue(new Queue("test.direct.queue"));
         rabbitAdmin.declareExchange(new DirectExchange("test.direct"));
         rabbitAdmin.declareBinding(new Binding("test.direct.queue", Binding.DestinationType.QUEUE, "test.direct", "mq.direct", null));

         rabbitAdmin.declareQueue(new Queue("test.topic.queue", true,false, false));
         rabbitAdmin.declareExchange(new TopicExchange("test.topic", true,false));
 //        如果注释掉上面两句实现声明，直接进行下面的绑定竟然不行，该版本amqp-client采用的是5.1.2,将上面两行代码放开，则运行成功
         rabbitAdmin.declareBinding(BindingBuilder.bind(new Queue("test.topic.queue", true,false, false))
                 .to(new TopicExchange("test.topic", true,false)).with("mq.topic"));
 //        经过实验确实是需要先声明，才可以运行通过
         rabbitAdmin.declareQueue(new Queue("test.fanout.queue",true,false,false,null));
         rabbitAdmin.declareExchange(new FanoutExchange("test.fanout", true, false, null));
         rabbitAdmin.declareBinding(BindingBuilder.bind(new Queue("test.fanout.queue", true, false,false))
                 .to(new FanoutExchange("test.fanout", true, false)));
         rabbitAdmin.purgeQueue("test.direct.queue", false);//清空队列消息
     }
     @Autowired
     private RabbitTemplate rabbitTemplate;
     @Test
     public void testTemplate() {
         String body = "hello,test rabbitTemplage!";
         MessageProperties properties = new MessageProperties();
         properties.setContentEncoding("utf-8");
         properties.setDeliveryMode(MessageDeliveryMode.PERSISTENT);
         properties.setPriority(1);
         properties.setHeader("nihao:", "yes!");
         Message message = new Message(body.getBytes(), properties);
 //        MessagePostProcessor参数是在消息发送过程中动态修改消息属性的类
         rabbitTemplate.convertAndSend("test.direct01", "mq.direct", message,new MessagePostProcessor() {

             @Override
             public Message postProcessMessage(Message message) throws AmqpException {
 //                修改属性
                 message.getMessageProperties().setHeader("nihao:", "no");
 //                添加属性
                 message.getMessageProperties().setHeader("新添加属性：", "添加属性1");
                 return message;
             }
         });

 //        发送objcet类型
         rabbitTemplate.convertAndSend("test.topic01", "mq.topic", "send object type message!!!");
         System.out.println("发送完毕！！！");
     }

 }