RabbitMQ路由模式RoutingKey模式
生产者发送消息到交换机并指定一个路由key,消费者队列绑定到交换机时要制定路由key(key匹配就能接受消息,key不匹配就不能接受消息)
例如:我们可以把路由key设置为insert ,那么消费者队列key指定包含insert才可以接收消息,消费者队列key定义为update或者delete就不能接收消息。很好的控制了更新,插入和删除的操作。
采用交换机direct模式
注:
前面做的demo中RoutingKey设置的空
RoutingKey有值的时候,那么 经过消息队列之后,需要在经过 RoutingKey进行判断决定 消费者
pom.xml
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.toov5.rabibitMQScribe</groupId>
<artifactId>rabibitMQScribe</artifactId>
<version>0.0.1-SNAPSHOT</version>
<dependencies>
<dependency>
<groupId>com.rabbitmq</groupId>
<artifactId>amqp-client</artifactId>
<version>3.6.5</version>
</dependency>
</dependencies>
</project>
producer
package com.toov5.routing;
import java.io.IOException;
import java.util.concurrent.TimeoutException;
import com.rabbitmq.client.Channel;
import com.rabbitmq.client.Connection;
import com.toov5.utils.MQConnectionUtils;
//生产者 交换机类型 producerFanout类型
public class RoutingProducer {
//交换机名称
private static final String EXCHANGE_NAME = "my_routing";
public static void main(String[] args) throws IOException, TimeoutException {
//建立MQ连接
Connection connection = MQConnectionUtils.newConnection();
//创建通道
Channel channel = connection.createChannel();
//生产者绑定交换机
channel.exchangeDeclare(EXCHANGE_NAME, "direct"); //交换机名称 交换机类型
String routingKey="email";
//创建对应的消息
String msString = "my_Routing_destination_msg"+routingKey;
//通过频道 发送消息
System.out.println("生产者投递消息:"+msString);
channel.basicPublish(EXCHANGE_NAME, routingKey, null, msString.getBytes());
//关闭通道 和 连接
channel.close();
connection.close();
}
}
consumer:
package com.toov5.routing;
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.toov5.utils.MQConnectionUtils;
//邮件消费者
public class ConsumerEmailRouting {
private static final String EMAIL_QUEUE ="email_queue_routing";
//交换机名称
private static final String EXCHANGE_NAME = "my_routing";
public static void main(String[] args) throws IOException, TimeoutException {
System.out.println("邮件消费者启动");
//建立MQ连接
Connection connection = MQConnectionUtils.newConnection();
//创建通道
Channel channel = connection.createChannel();
//消费者声明队列
channel.queueDeclare(EMAIL_QUEUE, false, false, false, null);
//消费者队列绑定 路由
channel.queueBind(EMAIL_QUEUE, EXCHANGE_NAME, "email");
//消费者监听消息
DefaultConsumer defaultConsumer = new DefaultConsumer(channel) {
//重写监听方法
@Override
public void handleDelivery(String consumerTag, Envelope envelope, BasicProperties properties, byte[] body)
throws IOException {
String msg = new String(body,"UTF-8");
System.out.println("邮件消费者获取生产者消息"+msg);
}
};
channel.basicConsume(EMAIL_QUEUE,true, defaultConsumer); //绑定队列 事件监听
}
}
package com.toov5.routing;
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.toov5.utils.MQConnectionUtils;
//邮件消费者
public class ConsumerSMSRouting {
private static final String SMS_QUEUE ="sms_queue_routing";
//交换机名称
private static final String EXCHANGE_NAME = "my_routing";
public static void main(String[] args) throws IOException, TimeoutException {
System.out.println("短信消费者启动");
//建立MQ连接
Connection connection = MQConnectionUtils.newConnection();
//创建通道
Channel channel = connection.createChannel();
//消费者声明队列
channel.queueDeclare(SMS_QUEUE, false, false, false, null);
//消费者队列绑定 路由
channel.queueBind(SMS_QUEUE, EXCHANGE_NAME, "email");
channel.queueBind(SMS_QUEUE, EXCHANGE_NAME, "sms");
//消费者监听消息
DefaultConsumer defaultConsumer = new DefaultConsumer(channel) {
//重写监听方法
@Override
public void handleDelivery(String consumerTag, Envelope envelope, BasicProperties properties, byte[] body)
throws IOException {
String msg = new String(body,"UTF-8");
System.out.println("邮件消费者获取生产者消息"+msg);
}
};
channel.basicConsume(SMS_QUEUE,true, defaultConsumer); //绑定队列 事件监听
}
}
运行结果:
绑定两个: