rabbitmq第一弹simple

本次利用rabbitmq作为中介，实现了简单的消息发送和消费，模式如下： 

发送接收模式

官方的介绍文档可以转至链接：https://www.rabbitmq.com/tutorials/tutorial-one-java.html

常量定义：

public interface ExampleConstants {

    String QUEUE_NAME = "hello";

}

　　

发送端代码：

package com.test.example;

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

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

/**
 * @Author 
 * @create 
 */
public class Sender {

    public static void main(String[] args) {
        ConnectionFactory factory = new ConnectionFactory();
        factory.setHost("localhost");
        Connection connection = null;
        Channel channel = null;
        try{
            connection = factory.newConnection();
            channel = connection.createChannel();
            channel.queueDeclare(ExampleConstants.QUEUE_NAME,false,false,false,null);
            String message = "hello lh";
            channel.basicPublish("",ExampleConstants.QUEUE_NAME,null,message.getBytes());
            System.out.println(" [x] Sent '" + message + "'");
        }catch (Exception e){
            e.printStackTrace();
        }finally {
            if(channel != null){
                try {
                    channel.close();
                } catch (IOException e) {
                    e.printStackTrace();
                } catch (TimeoutException e) {
                    e.printStackTrace();
                }
            }
            if(connection != null){
                try {
                    connection.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }
    }

}

　　消费端代码：

package com.test.example;

import com.rabbitmq.client.*;

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

/**
 * @Author
 * @create 
 */
public class Receiver {

    public static void main(String[] args) {
        ConnectionFactory factory = null;
        Connection connection = null;
        Channel channel = null;
        try{
            factory = new ConnectionFactory();
            factory.setHost("localhost");
            connection = factory.newConnection();
            channel = connection.createChannel();

            channel.queueDeclare(ExampleConstants.QUEUE_NAME,false,false,false,null);

            DeliverCallback deliverCallback = (consumerTag,delivery) -> {
                String message = new String(delivery.getBody(),"UTF-8");
                System.out.println(" [x] Received '" + message + "'");
            };
            channel.basicConsume(ExampleConstants.QUEUE_NAME,true,deliverCallback,consumerTag -> {});
        }catch (Exception e){
            e.printStackTrace();
        }finally {
            if(channel != null){
                try {
                    channel.close();
                } catch (IOException e) {
                    e.printStackTrace();
                } catch (TimeoutException e) {
                    e.printStackTrace();
                }
            }
            if(connection != null){
                try {
                    connection.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }
    }

}