扫二维码与项目经理沟通
我们在微信上24小时期待你的声音
解答本文疑问/技术咨询/运营咨询/技术建议/互联网交流
这篇文章主要介绍了RabbitMQ最常用的三大模式是什么,具有一定借鉴价值,感兴趣的朋友可以参考下,希望大家阅读完这篇文章之后大有收获,下面让小编带着大家一起了解一下。
创新互联公司-专业网站定制、快速模板网站建设、高性价比龙湾网站开发、企业建站全套包干低至880元,成熟完善的模板库,直接使用。一站式龙湾网站制作公司更省心,省钱,快速模板网站建设找我们,业务覆盖龙湾地区。费用合理售后完善,十载实体公司更值得信赖。Direct 模式
所有发送到 Direct Exchange 的消息被转发到 RouteKey 中指定的 Queue。
Direct 模式可以使用 RabbitMQ 自带的 Exchange: default Exchange,所以不需要将 Exchange 进行任何绑定(binding)操作。
消息传递时,RouteKey 必须完全匹配才会被队列接收,否则该消息会被抛弃,
import com.rabbitmq.client.Channel; import com.rabbitmq.client.Connection; import com.rabbitmq.client.ConnectionFactory; public class DirectProducer { public static void main(String[] args) throws Exception { //1. 创建一个 ConnectionFactory 并进行设置 ConnectionFactory factory = new ConnectionFactory(); factory.setHost("localhost"); factory.setVirtualHost("/"); factory.setUsername("guest"); factory.setPassword("guest"); //2. 通过连接工厂来创建连接 Connection connection = factory.newConnection(); //3. 通过 Connection 来创建 Channel Channel channel = connection.createChannel(); //4. 声明 String exchangeName = "test_direct_exchange"; String routingKey = "item.direct"; //5. 发送 String msg = "this is direct msg"; channel.basicPublish(exchangeName, routingKey, null, msg.getBytes()); System.out.println("Send message : " + msg); //6. 关闭连接 channel.close(); connection.close(); } }
import com.rabbitmq.client.*; import java.io.IOException; public class DirectConsumer { public static void main(String[] args) throws Exception { //1. 创建一个 ConnectionFactory 并进行设置 ConnectionFactory factory = new ConnectionFactory(); factory.setHost("localhost"); factory.setVirtualHost("/"); factory.setUsername("guest"); factory.setPassword("guest"); factory.setAutomaticRecoveryEnabled(true); factory.setNetworkRecoveryInterval(3000); //2. 通过连接工厂来创建连接 Connection connection = factory.newConnection(); //3. 通过 Connection 来创建 Channel Channel channel = connection.createChannel(); //4. 声明 String exchangeName = "test_direct_exchange"; String queueName = "test_direct_queue"; String routingKey = "item.direct"; channel.exchangeDeclare(exchangeName, "direct", true, false, null); channel.queueDeclare(queueName, false, false, false, null); //一般不用代码绑定,在管理界面手动绑定 channel.queueBind(queueName, exchangeName, routingKey); //5. 创建消费者并接收消息 Consumer consumer = new DefaultConsumer(channel) { @Override public void handleDelivery(String consumerTag, Envelope envelope, AMQP.BasicProperties properties, byte[] body) throws IOException { String message = new String(body, "UTF-8"); System.out.println(" [x] Received '" + message + "'"); } }; //6. 设置 Channel 消费者绑定队列 channel.basicConsume(queueName, true, consumer); } }
Send message : this is direct msg [x] Received 'this is direct msg'
Topic 模式
可以使用通配符进行模糊匹配
符号'#" 匹配一个或多个词
符号"*”匹配不多不少一个词
例如
'log.#"能够匹配到'log.info.oa"
"log.*"只会匹配到"log.erro“
import com.rabbitmq.client.Channel; import com.rabbitmq.client.Connection; import com.rabbitmq.client.ConnectionFactory; public class TopicProducer { public static void main(String[] args) throws Exception { //1. 创建一个 ConnectionFactory 并进行设置 ConnectionFactory factory = new ConnectionFactory(); factory.setHost("localhost"); factory.setVirtualHost("/"); factory.setUsername("guest"); factory.setPassword("guest"); //2. 通过连接工厂来创建连接 Connection connection = factory.newConnection(); //3. 通过 Connection 来创建 Channel Channel channel = connection.createChannel(); //4. 声明 String exchangeName = "test_topic_exchange"; String routingKey1 = "item.update"; String routingKey2 = "item.delete"; String routingKey3 = "user.add"; //5. 发送 String msg = "this is topic msg"; channel.basicPublish(exchangeName, routingKey1, null, msg.getBytes()); channel.basicPublish(exchangeName, routingKey2, null, msg.getBytes()); channel.basicPublish(exchangeName, routingKey3, null, msg.getBytes()); System.out.println("Send message : " + msg); //6. 关闭连接 channel.close(); connection.close(); } }
import com.rabbitmq.client.*; import java.io.IOException; public class TopicConsumer { public static void main(String[] args) throws Exception { //1. 创建一个 ConnectionFactory 并进行设置 ConnectionFactory factory = new ConnectionFactory(); factory.setHost("localhost"); factory.setVirtualHost("/"); factory.setUsername("guest"); factory.setPassword("guest"); factory.setAutomaticRecoveryEnabled(true); factory.setNetworkRecoveryInterval(3000); //2. 通过连接工厂来创建连接 Connection connection = factory.newConnection(); //3. 通过 Connection 来创建 Channel Channel channel = connection.createChannel(); //4. 声明 String exchangeName = "test_topic_exchange"; String queueName = "test_topic_queue"; String routingKey = "item.#"; channel.exchangeDeclare(exchangeName, "topic", true, false, null); channel.queueDeclare(queueName, false, false, false, null); //一般不用代码绑定,在管理界面手动绑定 channel.queueBind(queueName, exchangeName, routingKey); //5. 创建消费者并接收消息 Consumer consumer = new DefaultConsumer(channel) { @Override public void handleDelivery(String consumerTag, Envelope envelope, AMQP.BasicProperties properties, byte[] body) throws IOException { String message = new String(body, "UTF-8"); System.out.println(" [x] Received '" + message + "'"); } }; //6. 设置 Channel 消费者绑定队列 channel.basicConsume(queueName, true, consumer); } }
Send message : this is topc msg [x] Received 'this is topc msg' [x] Received 'this is topc msg'
Fanout 模式
不处理路由键,只需要简单的将队列绑定到交换机上发送到交换机的消息都会被转发到与该交换机绑定的所有队列上。
Fanout交换机转发消息是最快的。
import com.rabbitmq.client.*; import java.io.IOException; public class FanoutConsumer { public static void main(String[] args) throws Exception { //1. 创建一个 ConnectionFactory 并进行设置 ConnectionFactory factory = new ConnectionFactory(); factory.setHost("localhost"); factory.setVirtualHost("/"); factory.setUsername("guest"); factory.setPassword("guest"); factory.setAutomaticRecoveryEnabled(true); factory.setNetworkRecoveryInterval(3000); //2. 通过连接工厂来创建连接 Connection connection = factory.newConnection(); //3. 通过 Connection 来创建 Channel Channel channel = connection.createChannel(); //4. 声明 String exchangeName = "test_fanout_exchange"; String queueName = "test_fanout_queue"; String routingKey = "item.#"; channel.exchangeDeclare(exchangeName, "fanout", true, false, null); channel.queueDeclare(queueName, false, false, false, null); //一般不用代码绑定,在管理界面手动绑定 channel.queueBind(queueName, exchangeName, routingKey); //5. 创建消费者并接收消息 Consumer consumer = new DefaultConsumer(channel) { @Override public void handleDelivery(String consumerTag, Envelope envelope, AMQP.BasicProperties properties, byte[] body) throws IOException { String message = new String(body, "UTF-8"); System.out.println(" [x] Received '" + message + "'"); } }; //6. 设置 Channel 消费者绑定队列 channel.basicConsume(queueName, true, consumer); } }
import com.rabbitmq.client.Channel; import com.rabbitmq.client.Connection; import com.rabbitmq.client.ConnectionFactory; public class FanoutProducer { public static void main(String[] args) throws Exception { //1. 创建一个 ConnectionFactory 并进行设置 ConnectionFactory factory = new ConnectionFactory(); factory.setHost("localhost"); factory.setVirtualHost("/"); factory.setUsername("guest"); factory.setPassword("guest"); //2. 通过连接工厂来创建连接 Connection connection = factory.newConnection(); //3. 通过 Connection 来创建 Channel Channel channel = connection.createChannel(); //4. 声明 String exchangeName = "test_fanout_exchange"; String routingKey1 = "item.update"; String routingKey2 = ""; String routingKey3 = "ookjkjjkhjhk";//任意routingkey //5. 发送 String msg = "this is fanout msg"; channel.basicPublish(exchangeName, routingKey1, null, msg.getBytes()); channel.basicPublish(exchangeName, routingKey2, null, msg.getBytes()); channel.basicPublish(exchangeName, routingKey3, null, msg.getBytes()); System.out.println("Send message : " + msg); //6. 关闭连接 channel.close(); connection.close(); } }
Send message : this is fanout msg [x] Received 'this is fanout msg' [x] Received 'this is fanout msg' [x] Received 'this is fanout msg'
感谢你能够认真阅读完这篇文章,希望小编分享的“RabbitMQ最常用的三大模式是什么”这篇文章对大家有帮助,同时也希望大家多多支持创新互联建站,关注创新互联网站建设公司行业资讯频道,更多相关知识等着你来学习!
另外有需要云服务器可以了解下创新互联建站www.cdcxhl.com,海内外云服务器15元起步,三天无理由+7*72小时售后在线,公司持有idc许可证,提供“云服务器、裸金属服务器、高防服务器、香港服务器、美国服务器、虚拟主机、免备案服务器”等云主机租用服务以及企业上云的综合解决方案,具有“安全稳定、简单易用、服务可用性高、性价比高”等特点与优势,专为企业上云打造定制,能够满足用户丰富、多元化的应用场景需求。
我们在微信上24小时期待你的声音
解答本文疑问/技术咨询/运营咨询/技术建议/互联网交流