rabbitmq學習記錄（二）基本隊列

基本隊列：Producer直接發送信息到Queue中，Consumer接收Queue發送過來的信息

簡而言之，一個生產者發送信息，一個消費者接收信息。

獲取鏈接工具類：

package com.example.demo.utils;

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

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

public class ConnectionUtil {

	public static Connection getConnection() throws IOException, TimeoutException {
		ConnectionFactory connectionFactory = new ConnectionFactory();
		connectionFactory.setHost("127.0.0.1");
		connectionFactory.setPort(5672);
//		connectionFactory.setVirtualHost("");
		connectionFactory.setUsername("guest");
		connectionFactory.setPassword("guest");
		return connectionFactory.newConnection();
	}
	
}

生產者：

package com.example.demo.queue.simple;

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

import com.example.demo.utils.ConnectionUtil;
import com.rabbitmq.client.Channel;
import com.rabbitmq.client.Connection;

public class Producer {

	// 隊列名稱
	private static final String QUEUE_NAME="simple_queue";
	
	public static void main(String[] args) {
		Connection connection = null;
		Channel channel = null;
		try {
			// 獲取鏈接
			connection = ConnectionUtil.getConnection();
			// 建立通道
			channel = connection.createChannel();
			// 聲明隊列
			channel.queueDeclare(QUEUE_NAME, false, false, false, null);
			// 生產者發送的信息
			String sendMsg = "msg from producer";
			// 發送信息
			channel.basicPublish("", QUEUE_NAME, null, sendMsg.getBytes());
		} catch (Exception e) {
			e.printStackTrace();
		} finally {
			// 關閉通道
			try {
				channel.close();
			} catch (IOException e) {
				e.printStackTrace();
			} catch (TimeoutException e) {
				e.printStackTrace();
			}
			// 關閉鏈接
			try {
				connection.close();
			} catch (IOException e) {
				e.printStackTrace();
			}
		}
		
	}
	
}

消費者：

package com.example.demo.queue.simple;

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

import com.example.demo.utils.ConnectionUtil;
import com.rabbitmq.client.AMQP.BasicProperties;
import com.rabbitmq.client.Channel;
import com.rabbitmq.client.Connection;
import com.rabbitmq.client.DefaultConsumer;
import com.rabbitmq.client.Envelope;

public class Consumer {

	// 隊列名稱
	private static final String QUEUE_NAME="simple_queue";
	
	public static void main(String[] args) {
		Connection connection = null;
		Channel channel = null;
		try {
			// 獲取鏈接
			connection = ConnectionUtil.getConnection();
			// 建立通道
			channel = connection.createChannel();
			// 聲明隊列
			channel.queueDeclare(QUEUE_NAME, false, false, false, null);
			// 定義消費者
			DefaultConsumer consumer = new DefaultConsumer(channel) {

				@Override
				public void handleDelivery(String consumerTag, Envelope envelope, BasicProperties properties, byte[] body) throws IOException {
					String msg = new String(body,"UTF-8");
					System.out.println("receive msg:"+msg);
				}
				
			};
			// 接收信息
			channel.basicConsume(QUEUE_NAME, true, consumer);
			
		} catch (Exception e) {
			e.printStackTrace();
		} finally {
			try {
				channel.close();
			} catch (IOException e) {
				e.printStackTrace();
			} catch (TimeoutException e) {
				e.printStackTrace();
			}
			try {
				connection.close();
			} catch (IOException e) {
				e.printStackTrace();
			}
		}
	}
	
}

執行方法：右鍵->Run as->Java Application

執行順序：Producer.main()->Consumer.main()

 

執行Producer的main方法以後，打開rabbitmq的管理界面，切換到Queues

圖中圈出的隊列，說明，生產者（Producer）已經成功的發送信息到rabbitmq的隊列之中了。

接下來，咱們執行消費者（Consumer）的main方法，若是想看到消費者收到信息，能夠把消費者類中的通道，鏈接關閉代碼先註釋掉，便可看到收到的信息。