RabbitMQ-Ack确认机制与消费端限流

@Component
public class AckListener implements ChannelAwareMessageListener {
    /**
     * 1、设置手动签收：acknowledge="manual"
     * 2、监听器实现接口ChannelAwareMessageListener
     * 3、如果消息成功，调用basicAck()签收
     * 4、如果消息失败，调用basicNack()拒绝签收，broker重新发送给consumer
     * @param message
     */
    @Override
    public void onMessage(Message message, Channel channel) throws Exception {
        Thread.sleep(1000);
        long deliveryTag = message.getMessageProperties().getDeliveryTag();
        try {
            //接收消息
            System.out.println(new String(message.getBody()));
            //处理业务逻辑
            System.out.println("处理业务逻辑。。。");
            //int i=3/0;//产生错误
            //手动签收
            channel.basicAck(deliveryTag,true);
        }catch (Exception e){
            channel.basicNack(deliveryTag,true,true);
        }
    }
}

配置：

<!--定义监听器容器 acknowledge设置消息签收模式 prefetch设置消费端限流-->
<rabbit:listener-container connection-factory="connectionFactory" acknowledge="manual" prefetch="1" >
<rabbit:listener ref="ackListener" queue-names="queue_confirm"></rabbit:listener>

</rabbit:listener-container>