RabbitMq简单实例教程

mq原理不再赘述,百度一下大把介绍。但很难找到简单实用易理解的实例,故写此博客。
说明:本实例使用的是两个最基本的Java项目,开始吧

第一步:RabbitMq实例所用到的jar包

请先下载这三个jar包
http://central.maven.org/maven2/com/rabbitmq/amqp-client/5.5.1/amqp-client-5.5.1.jar
http://central.maven.org/maven2/org/slf4j/slf4j-api/1.7.25/slf4j-api-1.7.25.jar
http://central.maven.org/maven2/org/slf4j/slf4j-simple/1.7.25/slf4j-simple-1.7.25.jar

第二部:直接上代码

项目1(名字随便起):

创建一个producer类

/**
 * Created by DonviYang on 2019/1/9.
 */
import com.rabbitmq.client.*;

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

public class producer {
    private final static String QUEUE_NAME = "HELLO";

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


    }
}

项目2:

创建一个consumer类

/**
 * Created by DonviYang on 2019/1/9.
 */
import com.rabbitmq.client.*;

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

public class consumer {
    private final static String QUEUE_NAME = "HELLO";
    public static void main(String[] args) throws IOException, TimeoutException {
        ConnectionFactory factory = new ConnectionFactory();
        factory.setHost("localhost");
        Connection connection = factory.newConnection();
        Channel channel = connection.createChannel();
        channel.queueDeclare(QUEUE_NAME,false,false,false,null);
        System.out.println(" [*] Waiting for message. To exit press CTRL+C ");
        DeliverCallback deliverCallback = (consumerTag,delivery) -> {
            String message = new String(delivery.getBody(), "UTF-8");
            System.out.println(" [x] Receive '" + message + "'");
        };
        channel.basicConsume(QUEUE_NAME,true,deliverCallback,consumerTag -> { });

    }
}

每个项目都需要导入上述三个jar包。
操作方法:先将项目2运行起来(运行一次即可),后运行项目1,每运行一次,项目2中都会收到消息并打印。
DEMO 在这里,其中原理自己琢磨。这个demo基于最基本的java项目,故要变形到ssm框架或spring boot 框架只需搬进去即可。

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