RabbitMQ模式の通配符模式
1、说明
生产者P发送消息到交换机X,type=topic,交换机根据绑定队列的routing key的值进行通配符匹配;符号#:匹配一个或者多个词lazy.# 可以匹配lazy.irs或者lazy.irs.cor
符号:只能匹配一个词lazy. 可以匹配lazy.irs或者lazy.cor
2、模型
3、示例代码
3.1、生成者
import com.rabbitmq.client.Channel;
import com.rabbitmq.client.Connection;
import com.rabbitmq.client.ConnectionFactory;
import java.io.IOException;
import java.util.Objects;
import java.util.concurrent.TimeoutException;
import static java.nio.charset.StandardCharsets.UTF_8;
/**
* 发布订阅模式
*/
public class Publisher {
private static final String MQ_VIRTUAL_HOST = "VHOST::TUTORIAL";
private static final String MQ_EXCHANGE_NAME = "EXCHANGE::TUTORIAL::TOPIC";
public static void main(String[] args) {
Connection connection = null;
Channel channel = null;
try {
final ConnectionFactory factory = new ConnectionFactory();
factory.setHost("127.0.0.1");
factory.setPort(5672);
factory.setUsername("admin");
factory.setPassword("romens");
factory.setVirtualHost(MQ_VIRTUAL_HOST);
connection = factory.newConnection();
channel = connection.createChannel();
channel.basicPublish(MQ_EXCHANGE_NAME, "b2b.stock", null, "Hello Kitty".getBytes(UTF_8));
} catch (IOException | TimeoutException e) {
e.printStackTrace();
} finally {
if (Objects.nonNull(channel)) {
try {
channel.close();
} catch (IOException | TimeoutException e) {
e.printStackTrace();
}
}
if (Objects.nonNull(connection)) {
try {
connection.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
}
}
3.2、消费者
3.2.1、消费者A
import com.rabbitmq.client.*;
import java.io.IOException;
import java.util.Objects;
import java.util.concurrent.TimeoutException;
import static java.nio.charset.StandardCharsets.UTF_8;
public class ConsumerA {
private static final String MQ_VIRTUAL_HOST = "VHOST::TUTORIAL";
private static final String MQ_EXCHANGE_NAME = "EXCHANGE::TUTORIAL::TOPIC";
private static final String MQ_QUEUE_NAME = "QUEUE::TUTORIAL::A";
public static void main(String[] args) {
Connection connection = null;
Channel channel = null;
try {
final ConnectionFactory factory = new ConnectionFactory();
factory.setHost("127.0.0.1");
factory.setPort(5672);
factory.setUsername("admin");
factory.setPassword("romens");
factory.setVirtualHost(MQ_VIRTUAL_HOST);
connection = factory.newConnection();
channel = connection.createChannel();
channel.queueBind(MQ_QUEUE_NAME, MQ_EXCHANGE_NAME, "*.stock.*");
System.out.println("[*] Waiting for messages. To exits press CTRL+C");
final DefaultConsumer consumer = new DefaultConsumer(channel) {
@Override
public void handleDelivery(String consumerTag, Envelope envelope, AMQP.BasicProperties properties, byte[] body) {
System.out.println(" [X] Received '" + new String(body, UTF_8) + "'");
}
};
channel.basicConsume(MQ_QUEUE_NAME, true, consumer);
while (true) {
synchronized (consumer) {
try {
consumer.wait();
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}
} catch (IOException | TimeoutException e) {
e.printStackTrace();
} finally {
if (Objects.nonNull(channel)) {
try {
channel.close();
} catch (IOException | TimeoutException e) {
e.printStackTrace();
}
}
if (Objects.nonNull(connection)) {
try {
connection.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
}
}
3.2.2、消费者B
import com.rabbitmq.client.*;
import java.io.IOException;
import java.util.Objects;
import java.util.concurrent.TimeoutException;
import static java.nio.charset.StandardCharsets.UTF_8;
public class ConsumerB {
private static final String MQ_VIRTUAL_HOST = "VHOST::TUTORIAL";
private static final String MQ_EXCHANGE_NAME = "EXCHANGE::TUTORIAL::TOPIC";
private static final String MQ_QUEUE_NAME = "QUEUE::TUTORIAL::B";
public static void main(String[] args) {
Connection connection = null;
Channel channel = null;
try {
final ConnectionFactory factory = new ConnectionFactory();
factory.setHost("127.0.0.1");
factory.setPort(5672);
factory.setUsername("admin");
factory.setPassword("romens");
factory.setVirtualHost(MQ_VIRTUAL_HOST);
connection = factory.newConnection();
channel = connection.createChannel();
channel.queueBind(MQ_QUEUE_NAME, MQ_EXCHANGE_NAME, "*.order.*");
System.out.println("[*] Waiting for messages. To exits press CTRL+C");
final DefaultConsumer consumer = new DefaultConsumer(channel) {
@Override
public void handleDelivery(String consumerTag, Envelope envelope, AMQP.BasicProperties properties, byte[] body) {
System.out.println(" [X] Received '" + new String(body, UTF_8) + "'");
}
};
channel.basicConsume(MQ_QUEUE_NAME, true, consumer);
while (true) {
synchronized (consumer) {
try {
consumer.wait();
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}
} catch (IOException | TimeoutException e) {
e.printStackTrace();
} finally {
if (Objects.nonNull(channel)) {
try {
channel.close();
} catch (IOException | TimeoutException e) {
e.printStackTrace();
}
}
if (Objects.nonNull(connection)) {
try {
connection.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
}
}
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薔薇猛虎皆成個性,陽光雨露俱是天恩!
薔薇猛虎皆成個性,陽光雨露俱是天恩!