/**
* 消费消息，拒绝消息（拒绝后自动重新放入到队列）
* @author hxstrive.com
* @date 2022年2月17日13:59:29
*/
public class RejectMessage1 {
private static final String EXCHANGE_NAME = "exchange_" +
RejectMessage1.class.getSimpleName();
/**
* 发送消息
*/
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();
// 创建通道
Channel channel = connection.createChannel();
channel.exchangeDeclare(EXCHANGE_NAME, "topic");
// 发送消息
System.out.println("[Send] Sending Message...");
byte[] msg = "hello wrold".getBytes();
channel.basicPublish(EXCHANGE_NAME,
"www.hxstrive.com", null, msg);
System.out.println("[Send] msg = " + new String(msg));
// 释放资源
channel.close();
connection.close();
}
/**
* 消费消息
*/
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();
// 创建通道
final Channel channel = connection.createChannel();
channel.exchangeDeclare(EXCHANGE_NAME, "topic");
// 绑定exchange与queue
final String queueName = channel.queueDeclare().getQueue();
channel.queueBind(queueName, EXCHANGE_NAME, "*.hxstrive.com");
System.out.println("[Receive] Waiting Message...");
// 消费消息
channel.basicConsume(queueName, false, new DefaultConsumer(channel){
@Override
public void handleDelivery(String consumerTag, Envelope envelope,
AMQP.BasicProperties properties, byte[] body) throws IOException {
// 打印消息
System.out.println("[Receive] message = " + new String(body));
// 拒绝消息
try {
Thread.sleep(1000);
} catch (Exception e) {}
channel.basicReject(envelope.getDeliveryTag(), true);
}
});
}
public static void main(String[] args) throws Exception {
RejectMessage1 demo = new RejectMessage1();
demo.consumer();
demo.sender();
}
}
