- Headers转发器
- 注意要点
headers转发器:
//声明headers转发器 channel.exchangeDeclare("header_exchange", BuiltinExchangeType.HEADERS);
发布消息时增加header头信息:
//定义headers存储的键值对 Map<String, Object> headers=new HashMap<String, Object>(); headers.put("key", "123456"); headers.put("token", "654321"); //把键值对放在properties Builder properties=new BasicProperties.Builder(); properties.headers(headers); properties.deliveryMode(2);//持久化 channel.basicPublish("header_exchange", "" , properties.build(), SerializationUtils.serialize(object));
转发器与队列的绑定(指定header),通过键值对匹配,有any、all两种:
//指定headers的匹配类型(all、any)、键值对 Map<String, Object> headers=new HashMap<String, Object>(); headers.put("x-match", "all");//all any(只要有一个键值对匹配即可) headers.put("key", "123456"); //headers.put("token", "6543211"); //绑定临时队列和转发器header_exchange channel.queueBind(queueName, "header_exchange", "", headers);
- 消息发送类
package com.demo.mq.rabbitmq.example07; import java.io.IOException; import java.io.Serializable; import java.util.HashMap; import java.util.Map; import org.apache.commons.lang3.SerializationUtils; import com.demo.mq.rabbitmq.MqManager; import com.rabbitmq.client.AMQP.BasicProperties; import com.rabbitmq.client.AMQP.BasicProperties.Builder; import com.rabbitmq.client.BuiltinExchangeType; import com.rabbitmq.client.Channel; import com.rabbitmq.client.Connection; /** * 发送消息类 * @author sheungxin * */ public class Send{ /** * 发送消息,HEADERS转发器,通过HEADERS中键值对匹配相应的queue * @param object 消息主体 * @throws IOException */ public static void sendAToB(Serializable object) throws Exception{ Connection conn=MqManager.newConnection(); Channel channel=conn.createChannel(); //声明headers转发器 channel.exchangeDeclare("header_exchange", BuiltinExchangeType.HEADERS); //定义headers存储的键值对 Map<String, Object> headers=new HashMap<String, Object>(); headers.put("key", "123456"); headers.put("token", "654321"); //把键值对放在properties Builder properties=new BasicProperties.Builder(); properties.headers(headers); properties.deliveryMode(2);//持久化 channel.basicPublish("header_exchange", "" , properties.build(), SerializationUtils.serialize(object)); System.out.println("Send '"+object+"'"); channel.close(); conn.close(); } public static void main(String[] args) throws Exception { sendAToB("Hello World !"); } }
- 消息接收类
package com.demo.mq.rabbitmq.example07; import java.io.IOException; import java.util.HashMap; import java.util.Map; import org.apache.commons.lang3.SerializationUtils; import com.demo.mq.rabbitmq.MqManager; import com.rabbitmq.client.AMQP; import com.rabbitmq.client.BuiltinExchangeType; import com.rabbitmq.client.Channel; import com.rabbitmq.client.Connection; import com.rabbitmq.client.Consumer; import com.rabbitmq.client.DefaultConsumer; import com.rabbitmq.client.Envelope; /** * 接收消息类 * @author sheungxin * */ public class Recv { /** * 用于接收消息,创建一个临时队列,绑定在转发器HEADERS上,并模糊指定键值对 * @param queue * @throws Exception */ public static void recvAToB() throws Exception{ Connection conn=MqManager.newConnection(); Channel channel=conn.createChannel(); channel.exchangeDeclare("header_exchange", BuiltinExchangeType.HEADERS); //创建一个临时队列 String queueName=channel.queueDeclare().getQueue(); //指定headers的匹配类型(all、any)、键值对 Map<String, Object> headers=new HashMap<String, Object>(); headers.put("x-match", "all");//all any(只要有一个键值对匹配即可) headers.put("key", "123456"); // headers.put("token", "6543211"); //绑定临时队列和转发器header_exchange channel.queueBind(queueName, "header_exchange", "", headers); System.out.println("Received ..."); Consumer consumer=new DefaultConsumer(channel){ @Override public void handleDelivery(String consumerTag,Envelope envelope,AMQP.BasicProperties properties,byte[] body) throws IOException{ String mes=SerializationUtils.deserialize(body); System.out.println(envelope.getRoutingKey()+":Received :'"+mes+"' done"); } }; //关闭自动应答机制,默认开启;这时候需要手动进行应该 channel.basicConsume(queueName, true, consumer); } public static void main(String[] args) throws Exception { recvAToB(); } }