学习RabbitMQ(第二章)

1.实现简单队列模式

1.引入Maven   jar包

<dependencies> <dependency> <groupId>com.rabbitmq</groupId> <artifactId>amqp-client</artifactId> <version>5.2.0</version> </dependency> </dependencies>

2.创建MQ连接

package com.utils; import java.io.IOException; import java.util.concurrent.TimeoutException; import com.rabbitmq.client.Connection; import com.rabbitmq.client.ConnectionFactory; public class MQConnectionUtils { //创建新的MQ连接 public static Connection newConnection() throws IOException, TimeoutException { //1.创建连接工厂 ConnectionFactory factory = new ConnectionFactory(); //2.设置连接地址 factory.setHost("127.0.0.1"); //3.设置用户名称 factory.setUsername("user"); //4.设置用户密码 factory.setPassword("user"); //5.设置amqp协议端口号 factory.setPort(5672); //设置virtualHost地址 factory.setVirtualHost("/adminzrf"); return (Connection) factory.newConnection(); } }

3.创建生产者连接

package com.producer; import java.io.IOException; import java.util.concurrent.TimeoutException; import com.rabbitmq.client.Channel; import com.rabbitmq.client.Connection; import com.utils.MQConnectionUtils; //简单队列生产者 public class Producer { //队列名称 private static final String QUEUE_NAME ="zrf_644"; public static void main(String[] args) throws IOException, TimeoutException { //1.创建一个新的连接 Connection connection = MQConnectionUtils.newConnection(); //2.创建通道 Channel channel = connection.createChannel(); //3.创建一个队列 参数1:队列名称 参数2:是否持久化 参数3:是否唯一 参数4:是否自动删除 channel.queueDeclare(QUEUE_NAME, false, false, false, null); //4.创建消息 String msg ="zrf_644444"; //5.生产者发送消息 channel.basicPublish("", QUEUE_NAME, null, msg.getBytes()); System.out.println("生产者发送消息成功:"+msg); //6.关闭通道和连接 channel.close(); connection.close(); } }

4.创建消费者连接

package com.consumer; import java.io.IOException; import java.util.concurrent.TimeoutException; import com.rabbitmq.client.Channel; import com.rabbitmq.client.Connection; import com.rabbitmq.client.DefaultConsumer; import com.rabbitmq.client.Envelope; import com.rabbitmq.client.AMQP.BasicProperties; import com.utils.MQConnectionUtils; public class Consumer { //队列名称 private static final String QUEUE_NAME ="zrf_644"; public static void main(String[] args) throws IOException, TimeoutException { //1.创建一个新的连接 Connection connection = MQConnectionUtils.newConnection(); //2.创建通道 Channel channel = connection.createChannel(); //3.创建一个队列 参数1:队列名称 参数2:是否持久化 参数3:是否唯一 参数4:是否自动删除 channel.queueDeclare(QUEUE_NAME, false, false, false, null); DefaultConsumer defaultConsumer = new DefaultConsumer(channel) { //监听获取消息 @Override public void handleDelivery(String consumerTag, Envelope envelope, BasicProperties properties, byte[] body) throws IOException { String msg = new String(body,"UTF-8"); System.out.println("消费者获取生产者消息:"+msg); } }; //设置应该模式 设置为true 表示默认自动应答 channel.basicConsume(QUEUE_NAME, true,defaultConsumer); } }