【redis】04-redis 根据监听key的失效事件实现订单超时关闭

vi redis.conf

 @Configuration
public class RedisListenerConfig {
    @Bean
    RedisMessageListenerContainer container(RedisConnectionFactory connectionFactory) {
        RedisMessageListenerContainer container = new RedisMessageListenerContainer();
        container.setConnectionFactory(connectionFactory);
        return container;
    }
}

@Component
public class RedisKeyExpirationListener extends KeyExpirationEventMessageListener {
    public RedisKeyExpirationListener(RedisMessageListenerContainer listenerContainer) {
        super(listenerContainer);
    }

    /**
     * 待支付
     */
    private static final Integer ORDER_STAYPAY = 0;
    /**
     * 失效
     */
    private static final Integer ORDER_INVALID = 2;
    @Autowired
    private OrderMapper orderMapper;

    /**
     * Redis失效事件 key
     *
     * @param message
     * @param pattern
     */
    @Override
    public void onMessage(Message message, byte[] pattern) {
        String expiraKey = message.toString();
        // 根据key查询 value 如果还还是为待支付状态 将订单改为已经超时~~
        OrderEntity orderNumber = orderMapper.getOrderNumber(expiraKey);
        System.out.println(expiraKey);
        if (orderNumber == null) {
            return;
        }
        if (orderNumber.getOrderStatus().equals(ORDER_STAYPAY)) {
            // 将订单状态改为已经失效
            orderMapper.updateOrderStatus(expiraKey, ORDER_INVALID);
        }
    }
}

@RestController
public class OrderController {
    @Autowired
    private OrderMapper orderMapper;
    @Autowired
    private RedisUtils redisUtils;

    @RequestMapping("/saveOrder")
    public String saveOrder() {
        // 1.生成token
        String orderToken = UUID.randomUUID().toString();
        String orderId = System.currentTimeMillis() + "";
        //2. 将该token存放到redis中
        redisUtils.setString(orderToken, orderId, 5L);
        OrderEntity orderEntity = new OrderEntity(null, "蚂蚁课堂永久会员", orderId, orderToken);
        int result = orderMapper.insertOrder(orderEntity);
        return result > 0 ? "success" : "fail";
    }
}

 @Data
public class OrderEntity {
    private Long id;
    private String orderName;
    /**
     * 0 待支付 1 已经支付
     */
    private Integer orderStatus;

    private String orderToken;
    private String orderId;

    public OrderEntity(Long id, String orderName, String orderId, String orderToken) {
        this.id = id;
        this.orderName = orderName;
        this.orderId = orderId;
        this.orderToken = orderToken;
    }
}

 public interface OrderMapper {

    @Insert("insert into order_number values (null,#{orderName},0,#{orderToken},#{orderId})")
    int insertOrder(OrderEntity OrderEntity);


    @Select("SELECT ID AS ID ,order_name AS ORDERNAME ,order_status AS orderstatus,order_token as ordertoken,order_id as  orderid FROM order_number\n" +
            "where order_token=#{orderToken};")
    OrderEntity getOrderNumber(String orderToken);

    @Update("\n" +
            "\n" +
            "update order_number set order_status=#{orderStatus} where order_token=#{orderToken};")
    int updateOrderStatus(String orderToken, Integer orderStatus);
}