消费者
- 没有声明 Exchange,直接声明 Queue;
- 消费的时候通过
delivery.getProperties().getHeaders()
拿到 Message 中 header 里的自定义属性;
package com.bfxy.rabbitmq.api.message;
import java.util.Map;
import com.bfxy.rabbitmq.Application;
import com.rabbitmq.client.Channel;
import com.rabbitmq.client.Connection;
import com.rabbitmq.client.ConnectionFactory;
import com.rabbitmq.client.Envelope;
import com.rabbitmq.client.QueueingConsumer;
import com.rabbitmq.client.QueueingConsumer.Delivery;
public class Consumer {
public static void main(String[] args) throws Exception {
ConnectionFactory connectionFactory = new ConnectionFactory();
connectionFactory.setHost(Application.HOST);
connectionFactory.setPort(5672);
connectionFactory.setVirtualHost("/");
Connection connection = connectionFactory.newConnection();
Channel channel = connection.createChannel();
String queueName = "test001";
channel.queueDeclare(queueName, true, false, false, null);
QueueingConsumer queueingConsumer = new QueueingConsumer(channel);
channel.basicConsume(queueName, true, queueingConsumer);
while(true){
Delivery delivery = queueingConsumer.nextDelivery();
String msg = new String(delivery.getBody());
System.err.println("消费端: " + msg);
Map<String, Object> headers = delivery.getProperties().getHeaders();
System.err.println("headers get my1 value: " + headers.get("my1"));
}
}
}
生产者
- 构建消息的时候,通过 Map 向 Message 的 headers 中添加自定义属性;
-
channel.basicPublish("", "test001", properties, msg.getBytes());
直接通过 Default Exchange 投递到队列 test001 中;
package com.bfxy.rabbitmq.api.message;
import java.util.HashMap;
import java.util.Map;
import com.bfxy.rabbitmq.Application;
import com.rabbitmq.client.AMQP;
import com.rabbitmq.client.Channel;
import com.rabbitmq.client.Connection;
import com.rabbitmq.client.ConnectionFactory;
public class Producer {
public static void main(String[] args) throws Exception {
ConnectionFactory connectionFactory = new ConnectionFactory();
connectionFactory.setHost(Application.HOST);
connectionFactory.setPort(5672);
connectionFactory.setVirtualHost("/");
Connection connection = connectionFactory.newConnection();
Channel channel = connection.createChannel();
Map<String, Object> headers = new HashMap<>();
headers.put("my1", "111");
headers.put("my2", "222");
AMQP.BasicProperties properties = new AMQP.BasicProperties.Builder()
.deliveryMode(2)
.contentEncoding("UTF-8")
.expiration("10000")
.headers(headers)
.build();
for(int i=0; i < 5; i++){
String msg = "Hello RabbitMQ!";
channel.basicPublish("", "test001", properties, msg.getBytes());
}
channel.close();
connection.close();
}
}