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
    }
}