rabbitmq，生成者和消费者

Posted 2020-08-11 HelloWorld

生成者

package cn.go4mi;  
import com.rabbitmq.client.Channel;
import com.rabbitmq.client.Connection;
import com.rabbitmq.client.ConnectionFactory;
public class Producer {  
    private final static String QUEUE_NAME = "hello2";// 队列名不能重复 之前已有就会失败  
    public static void main(String[] argv) throws java.io.IOException {  
        /* 使用工厂类建立Connection和Channel，并且设置参数 */  
        ConnectionFactory factory = new ConnectionFactory();  
        factory.setHost("localhost");// MQ的IP  
        factory.setPort(5672);// MQ端口  
        factory.setUsername("guest");// MQ用户名  
        factory.setPassword("guest");// MQ密码  
        Connection connection = factory.newConnection();  
        Channel channel = connection.createChannel();  
        /* 创建消息队列，并且发送消息 */  
        channel.queueDeclare(QUEUE_NAME, false, false, false, null);  
        for (int i = 0; i < 10; i++) {
            String message = "生成消息"+i;  
            channel.basicPublish("", QUEUE_NAME, null, message.getBytes());  
            System.out.println("生产了个‘" + message + "‘");  
        }
        /* 关闭连接 */  
        channel.close();  
        connection.close();  
    }  
}  

 

消费者

package cn.go4mi;  
import com.rabbitmq.client.Channel;
import com.rabbitmq.client.Connection;
import com.rabbitmq.client.ConnectionFactory;
import com.rabbitmq.client.QueueingConsumer;
public class Consumer {  
    private final static String QUEUE_NAME = "hello2";  
    public static void main(String[] argv) throws java.io.IOException,  
    java.lang.InterruptedException {  
        /* 建立连接 */  
        ConnectionFactory factory = new ConnectionFactory();  
        factory.setHost("localhost");// MQ的IP  
        factory.setPort(5672);// MQ端口  
        factory.setUsername("guest");// MQ用户名  
        factory.setPassword("guest");// MQ密码  
        Connection connection = factory.newConnection();  
        Channel channel = connection.createChannel();  

        /* 声明要连接的队列 */  
        channel.queueDeclare(QUEUE_NAME, false, false, false, null);  
        System.out.println("等待消息产生：");  

        /* 创建消费者对象，用于读取消息 */  
        QueueingConsumer consumer = new QueueingConsumer(channel);  
        channel.basicConsume(QUEUE_NAME, true, consumer);  
        int i=1;
        /* 读取队列，并且阻塞，即在读到消息之前在这里阻塞，直到等到消息，完成消息的阅读后，继续阻塞循环 */  
        while (true) {  
            QueueingConsumer.Delivery delivery = consumer.nextDelivery();  
            String message = new String(delivery.getBody());  
            System.out.println("第"+i+"个消息！");
            System.out.println("收到消息‘" + message + "‘");  
            i++;
            Thread.sleep(1000*5);
        }  
    }  
}