简单使用

public class StateListener implements ApplicationListener<ContextRefreshedEvent> {
　　
    @Resource
    private ConnectionFactory connectionFactory;

    @Bean
    public Queue serviceQueue() {
        return new Queue(SERVICE_QUEUE);
    }

    /**
     * 创建服务自己的队列
     */
    private static final String SERVICE_QUEUE = QueueConstants.SysBpmQueue.SYS_BPM_FORM_PROCESS_STATE_QUEUE + StringPool.DASH + FormConstants.APPLICATION_NAME;

    @Override
    public void onApplicationEvent(ContextRefreshedEvent event) {
        if (connectionFactory != null) {
            Connection connection = connectionFactory.createConnection();
            Channel channel = connection.createChannel(false);
            try {
                //实例化一个 持久化 非独占 空闲不删除 无其余参数的队列
                channel.queueDeclare(SERVICE_QUEUE, true, false, false, null);
                //绑定队列和交换机,第三个参数未routingKey
                channel.queueBind(SERVICE_QUEUE, QueueConstants.SysBpmQueue.SYS_BPM_FORM_PROCESS_STATE_EXCHANGE, StringPool.EMPTY);
            } catch (Exception e) {
                log.error(e.getMessage());
            }
        }
    }

    @RabbitListener(queues = SERVICE_QUEUE)
    private void listener(byte[] bytes) {
        try {
            // 业务实现
        } catch (Exception e) {
            log.error("流程状态回写失败:", e);
        }
    }
}

　　queueDeclare()的解释如下:

/**
 *
 * @param queue 队列名称
 * @param durable   服务器重启时能够存活
 * @param exclusive 连接断开后会删除队列
 * @param autoDelete 当没有消费者删除队列
 * @param arguments 参数设置
 */
queueDeclare(String queue,Boolean durable,Boolean exclusive,Boolean autoDelete,String arguments)

yml中配置host、port、账号密码信息