rabbitmq使用

最新推荐文章于 2021-11-24 20:49:19 发布

阮減显

最新推荐文章于 2021-11-24 20:49:19 发布

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分类专栏： database

本文为博主自创文章，不确保代码或者观点正确，如因引用文章中的代码或者观点造成的损失，恕不负责。

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rabbitmq的基本使用

java客户端下载

http://repo1.maven.org/maven2/com/rabbitmq/amqp-client/3.5.7/amqp-client-3.5.7.jar

向队列推送消息

package main;

import java.io.IOException;
import java.util.concurrent.TimeoutException;

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


public class ProduceMain {
	
	private final static String QUEUE_NAME = "MyQueueName"; 
	public static void main(String[] args){
		//创建连接工厂
        ConnectionFactory factory = new ConnectionFactory();
        factory.setHost("localhost");
		try {
			//创建连接
			Connection connection = factory.newConnection();
			//创建通道
	        Channel channel = connection.createChannel();
	        //指定 通道 使用的队列,队列还不存在时创建队列
	        channel.queueDeclare(QUEUE_NAME, false, false, false, null);
	        
	        String msg ;
	        for (int i=0;i<100;i++) {
	        	msg = "msg"+String.valueOf(i);
	        	//向队列添加消息
	        	channel.basicPublish("", QUEUE_NAME, null, msg.getBytes());
	        	System.out.println("Sent [" + msg + "]");
	        	
				Thread.sleep(100);
				
			}
	        
	        channel.close();
	        connection.close();
		} catch (IOException e) {
			
			e.printStackTrace();
		} catch (TimeoutException e) {
			
			e.printStackTrace();
		}catch (InterruptedException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
        
	}

}

从队列中取出消息

package main;

import java.io.IOException;
import java.util.concurrent.TimeoutException;

import com.rabbitmq.client.Channel;  
import com.rabbitmq.client.Connection;  
import com.rabbitmq.client.ConnectionFactory;  
import com.rabbitmq.client.ConsumerCancelledException;
import com.rabbitmq.client.QueueingConsumer;  
import com.rabbitmq.client.ShutdownSignalException;
public class ConsumeMain {

	private final static String QUEUE_NAME = "MyQueueName"; 
	public static void main(String[] args) {
		//创建连接工厂 
        ConnectionFactory factory = new ConnectionFactory();  
        factory.setHost("localhost");
		try {
			Connection connection = factory.newConnection();
			Channel channel = connection.createChannel();  
			//指定 通道 使用的队列,队列还不存在时创建队列
	        channel.queueDeclare(QUEUE_NAME, false, false, false, null);
	        System.out.println("Access "+QUEUE_NAME+", waiting...");
	          
	        //创建队列消费者  
	        QueueingConsumer consumer = new QueueingConsumer(channel);
	        //指定消费队列  
	        channel.basicConsume(QUEUE_NAME, true, consumer);  
	        while (true)  
	        {
	            //从队列取数据，如果没有阻塞等待
	            QueueingConsumer.Delivery delivery = consumer.nextDelivery();
				String message = new String(delivery.getBody());
		        System.out.println("Get [" + message + "]");
	        }
		} catch (IOException e) {
			
			e.printStackTrace();
		} catch (TimeoutException e) {
			
			e.printStackTrace();
		}  catch (ShutdownSignalException e) {
			
			e.printStackTrace();
		} catch (ConsumerCancelledException e) {
			
			e.printStackTrace();
		} catch (InterruptedException e) {
			
			e.printStackTrace();
		}  
        
	}

}