import com.rabbitmq.client.*;
import java.io.IOException;
import java.util.HashMap;
import java.util.Map;
/**
* 验证 RabbitMQ 的 channel.basicQos() 方法的作用
* @author hxstrive.com 2022/3/8
*/
public class QosDemo1 {
/** 交换器名称 */
private static final String EXCHANGE_NAME = "exchange-" + QosDemo1.class.getSimpleName();
/** 队列名称 */
private static final String QUEUE_NAME = "queue-" + QosDemo1.class.getSimpleName();
public static void main(String[] args) throws Exception {
QosDemo1 demo = new QosDemo1();
demo.consumer();
demo.consumer2();
demo.sender();
}
/**
* 生产者
* @throws Exception
*/
private void sender() throws Exception {
// 创建连接
ConnectionFactory factory = new ConnectionFactory();
factory.setHost("127.0.0.1");
factory.setPort(5672);
Connection connection = factory.newConnection();
// 创建信道
Channel channel = connection.createChannel();
// 声明交换器
channel.exchangeDeclare(EXCHANGE_NAME, "topic");
// 声明队列
channel.queueDeclare(QUEUE_NAME, true, false, false, null) ;
channel.queueBind(QUEUE_NAME, EXCHANGE_NAME, "*.hxstrive.com");
// 发送消息
System.out.println("[Sender] Send Message...");
for(int i = 0; i < 10; i++) {
String message = "qos message i=" + i;
channel.basicPublish(EXCHANGE_NAME, "www.hxstrive.com",
null, message.getBytes());
System.out.println("[Sender] message=" + message);
}
// 关闭连接
channel.close();
connection.close();
}
/**
* 消费者
* @throws Exception
*/
private void consumer() throws Exception {
// 创建连接
ConnectionFactory factory = new ConnectionFactory();
factory.setHost("127.0.0.1");
factory.setPort(5672);
Connection connection = factory.newConnection();
// 创建信道
final Channel channel = connection.createChannel();
// 声明交换器
channel.exchangeDeclare(EXCHANGE_NAME, "topic");
// 声明队列
channel.queueDeclare(QUEUE_NAME, true,
false, false, null) ;
channel.queueBind(QUEUE_NAME, EXCHANGE_NAME, "*.hxstrive.com");
// 消费消息
System.out.println("[Consumer1] Waiting for a message....");
channel.basicQos(1);
channel.basicConsume(QUEUE_NAME, false, new DefaultConsumer(channel){
@Override
public void handleDelivery(String consumerTag, Envelope envelope,
AMQP.BasicProperties properties, byte[] body) throws IOException {
try {
System.out.println("[Consumer1] body = " + new String(body));
Thread.sleep(2000);
channel.basicAck(envelope.getDeliveryTag(), false);
} catch (Exception e) {
e.printStackTrace();
}
}
});
}
/**
* 消费者2
* @throws Exception
*/
private void consumer2() throws Exception {
// 创建连接
ConnectionFactory factory = new ConnectionFactory();
factory.setHost("127.0.0.1");
factory.setPort(5672);
Connection connection = factory.newConnection();
// 创建信道
final Channel channel = connection.createChannel();
// 声明交换器
channel.exchangeDeclare(EXCHANGE_NAME, "topic");
// 声明队列
channel.queueDeclare(QUEUE_NAME, true,
false, false, null) ;
channel.queueBind(QUEUE_NAME, EXCHANGE_NAME, "*.hxstrive.com");
// 消费消息
System.out.println("[Consumer2] Waiting for a message....");
channel.basicQos(1);
channel.basicConsume(QUEUE_NAME, false, new DefaultConsumer(channel){
@Override
public void handleDelivery(String consumerTag, Envelope envelope,
AMQP.BasicProperties properties, byte[] body) throws IOException {
try {
System.out.println("[Consumer2] body = " + new String(body));
Thread.sleep(1000);
channel.basicAck(envelope.getDeliveryTag(), false);
} catch (Exception e) {
e.printStackTrace();
}
}
});
}
}
