模拟实现

模拟消费者

package com.example.demo.demo;import com.example.demo.common.Consumer;
import com.example.demo.common.MqException;
import com.example.demo.mqclient.Channel;
import com.example.demo.mqclient.Connection;
import com.example.demo.mqclient.ConnectionFactory;
import com.example.demo.mqsever.core.BasicProperties;
import com.example.demo.mqsever.core.ExchangeType;import java.io.IOException;/** 这个类表示一个消费者.* 通常这个类也应该是在一个独立的服务器中被执行*/
public class DemoConsumer {public static void main(String[] args) throws IOException, MqException, InterruptedException {System.out.println("启动消费者!");ConnectionFactory factory = new ConnectionFactory();factory.setHost("127.0.0.1");factory.setPort(9090);Connection connection = factory.newConnection();Channel channel = connection.createChannel();channel.exchangeDeclare("testExchange", ExchangeType.DIRECT, true, false, null);channel.queueDeclare("testQueue", true, false, false, null);channel.basicConsume("testQueue", true, new Consumer() {@Overridepublic void handleDelivery(String consumerTag, BasicProperties basicProperties, byte[] body) throws MqException, IOException {System.out.println("[消费数据] 开始!");System.out.println("consumerTag=" + consumerTag);System.out.println("basicProperties=" + basicProperties);String bodyString = new String(body, 0, body.length);System.out.println("body=" + bodyString);System.out.println("[消费数据] 结束!");}});// 由于消费者也不知道生产者要生产多少, 就在这里通过这个循环模拟一直等待消费.while (true) {Thread.sleep(500);}}
}

模拟生产者

package com.example.demo.demo;import com.example.demo.mqclient.Channel;
import com.example.demo.mqclient.Connection;
import com.example.demo.mqclient.ConnectionFactory;
import com.example.demo.mqsever.core.ExchangeType;import java.io.IOException;/** 这个类用来表示一个生产者.* 通常这是一个单独的服务器程序.*/
public class DemoProducer {public static void main(String[] args) throws IOException, InterruptedException {System.out.println("启动生产者");ConnectionFactory factory = new ConnectionFactory();factory.setHost("127.0.0.1");factory.setPort(9090);Connection connection = factory.newConnection();Channel channel = connection.createChannel();// 创建交换机和队列channel.exchangeDeclare("testExchange", ExchangeType.DIRECT, true, false, null);channel.queueDeclare("testQueue", true, false, false, null);// 创建一个消息并发送byte[] body = "hello".getBytes();boolean ok = channel.basicPublish("testExchange", "testQueue", null, body);System.out.println("消息投递完成! ok=" + ok);Thread.sleep(500);channel.close();connection.close();}
}

效果展示

启动结果如下：