Rabbitmq与spring整合之重要组件介绍——rabbitAdmin组件

　　rabbitAdmin组件是一个管理组件，主要是用户通过该组件进行rabbitmq的队列交换器虚拟主机等等进行操作。这里面有些教程说不用声明可以直接绑定，但是本博主运行时，不生命情况下就会报错，可能是跟所采用的版本有关。

不通过属性文件配置

配置类

 package com.zxy.demo.config;

 import org.springframework.amqp.rabbit.connection.CachingConnectionFactory;
 import org.springframework.amqp.rabbit.connection.ConnectionFactory;
 import org.springframework.amqp.rabbit.core.RabbitAdmin;
 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 {
     @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;
     }
     @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;
     }
 }

测试类：

 package com.zxy.demo;

 import org.junit.Test;
 import org.junit.runner.RunWith;
 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.core.RabbitAdmin;
 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
     }
 }