RabbitMQ学习之Headers交换类型（java）

Headers类型的exchange使用的比较少，它也是忽略routingKey的一种路由方式。是使用Headers来匹配的。Headers是一个键值对，可以定义成Hashtable。发送者在发送的时候定义一些键值对，接收者也可以再绑定时候传入一些键值对，两者匹配的话，则对应的队列就可以收到消息。匹配有两种方式all和any。这两种方式是在接收端必须要用键值"x-mactch"来定义。all代表定义的多个键值对都要满足，而any则代码只要满足一个就可以了。fanout，direct，topic exchange的routingKey都需要要字符串形式的，而headers exchange则没有这个要求，因为键值对的值可以是任何类型。

1.生产者Producer.java

package cn.slimsmart.rabbitmq.demo.headers;import java.util.Date;import java.util.Hashtable;import java.util.Map;import org.springframework.amqp.core.ExchangeTypes;import com.rabbitmq.client.AMQP;import com.rabbitmq.client.AMQP.BasicProperties;import com.rabbitmq.client.AMQP.BasicProperties.Builder;import com.rabbitmq.client.Channel;import com.rabbitmq.client.Connection;import com.rabbitmq.client.ConnectionFactory;public class Producer {private final static String EXCHANGE_NAME = "header-exchange";@SuppressWarnings("deprecation")public static void main(String[] args) throws Exception {// 创建连接和频道ConnectionFactory factory = new ConnectionFactory();factory.setHost("192.168.36.102");// 指定用户 密码factory.setUsername("admin");factory.setPassword("admin");// 指定端口factory.setPort(AMQP.PROTOCOL.PORT);Connection connection = factory.newConnection();Channel channel = connection.createChannel();//声明转发器和类型headerschannel.exchangeDeclare(EXCHANGE_NAME, ExchangeTypes.HEADERS,false,true,null);String message = new Date().toLocaleString() + " : log something";Map<String,Object> headers =  new Hashtable<String, Object>();headers.put("aaa", "01234");Builder properties = new BasicProperties.Builder();properties.headers(headers);// 指定消息发送到的转发器,绑定键值对headers键值对channel.basicPublish(EXCHANGE_NAME, "",properties.build(),message.getBytes());System.out.println("Sent message :'" + message + "'");channel.close();connection.close();}}

2.消费者Consumer.java

package cn.slimsmart.rabbitmq.demo.headers;import java.util.Hashtable;import java.util.Map;import org.springframework.amqp.core.ExchangeTypes;import com.rabbitmq.client.AMQP;import com.rabbitmq.client.Channel;import com.rabbitmq.client.Connection;import com.rabbitmq.client.ConnectionFactory;import com.rabbitmq.client.QueueingConsumer;public class Consumer {private final static String EXCHANGE_NAME = "header-exchange";private final static String QUEUE_NAME = "header-queue";public static void main(String[] args) throws Exception {// 创建连接和频道ConnectionFactory factory = new ConnectionFactory();factory.setHost("192.168.36.102");// 指定用户 密码factory.setUsername("admin");factory.setPassword("admin");// 指定端口factory.setPort(AMQP.PROTOCOL.PORT);Connection connection = factory.newConnection();Channel channel = connection.createChannel();//声明转发器和类型headerschannel.exchangeDeclare(EXCHANGE_NAME, ExchangeTypes.HEADERS,false,true,null);channel.queueDeclare(QUEUE_NAME,false, false, true,null);Map<String, Object> headers = new Hashtable<String, Object>();headers.put("x-match", "any");//all anyheaders.put("aaa", "01234");headers.put("bbb", "56789");// 为转发器指定队列，设置binding 绑定header键值对channel.queueBind(QUEUE_NAME, EXCHANGE_NAME,"", headers);QueueingConsumer consumer = new QueueingConsumer(channel);// 指定接收者，第二个参数为自动应答，无需手动应答channel.basicConsume(QUEUE_NAME, true, consumer);while (true) {QueueingConsumer.Delivery delivery = consumer.nextDelivery();String message = new String(delivery.getBody());System.out.println(message);} }}

实例代码：http://download.csdn.net/detail/tianwei7518/8136413