<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
  <modelVersion>4.0.0</modelVersion>
  <groupId>cn.how2j</groupId>
  <artifactId>rabbitmq</artifactId>
  <version>0.0.1-SNAPSHOT</version>
  <name>rabbitmq</name>
  <description>rabbitmq</description>
   <dependencies>
   	<dependency>
            <groupId>com.rabbitmq</groupId>
            <artifactId>amqp-client</artifactId>
            <version>3.6.5</version>
	 </dependency>
	<dependency>
        <groupId>cn.hutool</groupId>
        <artifactId>hutool-all</artifactId>
        <version>4.3.1</version>
    </dependency>	
    
   </dependencies>
</project>

package cn.how2j;

import javax.swing.JOptionPane;

import cn.hutool.core.util.NetUtil;

public class RabbitMQUtil {

	public static void main(String[] args) {
		checkServer();
	}
	public static void checkServer() {
		if(NetUtil.isUsableLocalPort(15672)) {
			JOptionPane.showMessageDialog(null, "RabbitMQ 服务器未启动 ");
			System.exit(1);
		} 
	}
}

package cn.how2j;
import java.io.IOException;
import java.util.concurrent.TimeoutException;

import com.rabbitmq.client.Channel;
import com.rabbitmq.client.Connection;
import com.rabbitmq.client.ConnectionFactory;

/**
 * 消息生成者
 */
public class TestDriectProducer {
    public final static String QUEUE_NAME="direct_queue";

    public static void main(String[] args) throws IOException, TimeoutException {
    	RabbitMQUtil.checkServer();
    	
        //创建连接工厂
        ConnectionFactory factory = new ConnectionFactory();
        //设置RabbitMQ相关信息
        factory.setHost("localhost");
        //创建一个新的连接
        Connection connection = factory.newConnection();
        //创建一个通道
        Channel channel = connection.createChannel();
        
        for (int i = 0; i < 100; i++) {
            String message = "direct 消息 " +i;
            //发送消息到队列中
            channel.basicPublish("", QUEUE_NAME, null, message.getBytes("UTF-8"));
			System.out.println("发送消息： " + message);
            
		}
        //关闭通道和连接
        channel.close();
        connection.close();
    }
}

package cn.how2j;
import java.io.IOException;
import java.util.concurrent.TimeoutException;

import com.rabbitmq.client.AMQP;
import com.rabbitmq.client.Channel;
import com.rabbitmq.client.Connection;
import com.rabbitmq.client.ConnectionFactory;
import com.rabbitmq.client.Consumer;
import com.rabbitmq.client.DefaultConsumer;
import com.rabbitmq.client.Envelope;

import cn.hutool.core.util.RandomUtil;

public class TestDriectCustomer {
    private final static String QUEUE_NAME = "direct_queue";

    public static void main(String[] args) throws IOException, TimeoutException {
    	//为当前消费者取随机名
    	String name = "consumer-"+ RandomUtil.randomString(5);
    	
    	//判断服务器是否启动
    	RabbitMQUtil.checkServer();
        // 创建连接工厂
        ConnectionFactory factory = new ConnectionFactory();
        //设置RabbitMQ地址
        factory.setHost("localhost");
        //创建一个新的连接
        Connection connection = factory.newConnection();
        //创建一个通道
        Channel channel = connection.createChannel();
        //声明要关注的队列
        channel.queueDeclare(QUEUE_NAME, false, false, true, null);
        System.out.println(name +" 等待接受消息");
        //DefaultConsumer类实现了Consumer接口，通过传入一个频道，
        // 告诉服务器我们需要那个频道的消息，如果频道中有消息，就会执行回调函数handleDelivery
        Consumer consumer = new DefaultConsumer(channel) {
            @Override
            public void handleDelivery(String consumerTag, Envelope envelope,
                                       AMQP.BasicProperties properties, byte[] body)
                    throws IOException {
                String message = new String(body, "UTF-8");
                System.out.println(name + " 接收到消息 '" + message + "'");
            }
        };
        //自动回复队列应答 -- RabbitMQ中的消息确认机制
        channel.basicConsume(QUEUE_NAME, true, consumer);
    }
}