rabbitmq(7)通配符模式
祈雨的笔记
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2018-03-25
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via 祈雨的笔记
1、模型
topic实际是direct模式的升级版,topic模式下消息可以通过routingKey匹配的方式对应到消费者。
匹配规则如下:#(井号)可以匹配零个或多个单词,*(星号)可以匹配一个单词。
2、代码
2.1、生产者
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| private final static String EXCHANGE_NAME = "test_topic_exchange";
public static void main(String[] args) throws Exception {
ConnectionFactory factory = new ConnectionFactory();
factory.setHost("192.168.1.7");
factory.setUsername("root");
factory.setPassword("123456");
Connection connection = factory.newConnection();
Channel channel = connection.createChannel();
channel.exchangeDeclare(EXCHANGE_NAME, "topic");
String message = "Hello world";
String routingKey = "key1.key2";
channel.basicPublish(EXCHANGE_NAME, routingKey, null, message.getBytes());
System.out.println(" [x] Sent '" + message + "'");
channel.close();
connection.close();
}
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2.2、消费者1
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| private final static String EXCHANGE_NAME = "test_topic_exchange";
public static void main(String[] args) throws Exception {
ConnectionFactory factory = new ConnectionFactory();
factory.setHost("192.168.1.7");
factory.setUsername("root");
factory.setPassword("123456");
Connection connection = factory.newConnection();
final Channel channel = connection.createChannel();
channel.exchangeDeclare(EXCHANGE_NAME, "topic");
String queueName = channel.queueDeclare().getQueue();
channel.queueBind(queueName, EXCHANGE_NAME, "key1.*");
System.out.println(" [1] Waiting for messages.");
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(" [1] Received '" + message + "'");
channel.basicAck(envelope.getDeliveryTag(), false);
}
};
boolean autoAck = false;
channel.basicConsume(queueName, autoAck, consumer);
}
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2.2、消费者2
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| private final static String EXCHANGE_NAME = "test_topic_exchange";
public static void main(String[] args) throws Exception {
ConnectionFactory factory = new ConnectionFactory();
factory.setHost("192.168.1.7");
factory.setUsername("root");
factory.setPassword("123456");
Connection connection = factory.newConnection();
final Channel channel = connection.createChannel();
channel.exchangeDeclare(EXCHANGE_NAME, "topic");
String queueName = channel.queueDeclare().getQueue();
channel.queueBind(queueName, EXCHANGE_NAME, "#.key3");
System.out.println(" [2] Waiting for messages.");
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(" [2] Received '" + message + "'");
channel.basicAck(envelope.getDeliveryTag(), false);
}
};
boolean autoAck = false;
channel.basicConsume(queueName, autoAck, consumer);
}
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