RabbitMq消费者消息确认

示例代码

import com.rabbitmq.client.Channel;
import org.springframework.amqp.core.Message;
...
@RabbitListener(queues = "${rabbit.my.queue}")
public void process(Message message, Channel channel) {

	//确认消息已经消费（仅确认当前消息）
    channel.basicAck(message.getMessageProperties().getDeliveryTag(), false);
}

批量确认消息

   /**
     * Acknowledge one or several received messages. 
     * Supply the deliveryTag from the {@link com.rabbitmq.client.AMQP.Basic.GetOk}
     * or {@link com.rabbitmq.client.AMQP.Basic.Deliver} method
     * containing the received message being acknowledged.
     * @see com.rabbitmq.client.AMQP.Basic.Ack
     * @param deliveryTag the tag from the received {@link com.rabbitmq.client.AMQP.Basic.GetOk} or {@link com.rabbitmq.client.AMQP.Basic.Deliver}
     * @param multiple true to acknowledge all messages up to and including the supplied delivery tag; false to acknowledge just the supplied delivery tag.
     * @throws java.io.IOException if an error is encountered
     */
    void basicAck(long deliveryTag, boolean multiple) throws IOException;

批量拒绝消息

 /**
     * Reject one or several received messages.
     *
     * Supply the <code>deliveryTag</code> from the {@link com.rabbitmq.client.AMQP.Basic.GetOk}
     * or {@link com.rabbitmq.client.AMQP.Basic.GetOk} method containing the message to be rejected.
     * @see com.rabbitmq.client.AMQP.Basic.Nack
     * @param deliveryTag the tag from the received {@link com.rabbitmq.client.AMQP.Basic.GetOk} or {@link com.rabbitmq.client.AMQP.Basic.Deliver}
     * @param multiple true to reject all messages up to and including the supplied delivery tag; false to reject just the supplied delivery tag.
     * @param requeue true if the rejected message(s) should be requeued rather than discarded/dead-lettered
     * @throws java.io.IOException if an error is encountered
     */
    void basicNack(long deliveryTag, boolean multiple, boolean requeue)
            throws IOException;

要求broker重新发送消息

 /**
     * Ask the broker to resend unacknowledged messages.  In 0-8
     * basic.recover is asynchronous; in 0-9-1 it is synchronous, and
     * the new, deprecated method basic.recover_async is asynchronous.
     * @param requeue If true, messages will be requeued and possibly delivered to a different consumer. If false, messages will be redelivered to the same consumer.
     */
    Basic.RecoverOk basicRecover(boolean requeue) throws IOException;

拒绝消息

  /**
     * Reject a message. Supply the deliveryTag from the {@link com.rabbitmq.client.AMQP.Basic.GetOk}
     * or {@link com.rabbitmq.client.AMQP.Basic.Deliver} method
     * containing the received message being rejected.
     * @see com.rabbitmq.client.AMQP.Basic.Reject
     * @param deliveryTag the tag from the received {@link com.rabbitmq.client.AMQP.Basic.GetOk} or {@link com.rabbitmq.client.AMQP.Basic.Deliver}
     * @param requeue true if the rejected message should be requeued rather than discarded/dead-lettered
     * @throws java.io.IOException if an error is encountered
     */
    void basicReject(long deliveryTag, boolean requeue) throws IOException;