1.首先,我们需要在pom.xml文件中添加以下依赖:
java
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-redis</artifactId>
</dependency>
2.在application.properties文件中配置Redis的连接信息:
java
# Redis配置
spring.redis.host=127.0.0.1
spring.redis.port=6379
spring.redis.password=
spring.redis.database=0
3.创建一个RedisUtil工具类,用于操作Redis:
java
@Component
public class RedisUtil {
@Autowired
private RedisTemplate<String, Object> redisTemplate;
// 设置key-value到Redis中,并设置过期时间(单位:秒)
public boolean set(String key, Object value, long expireTime) {
try {
ValueOperations<String, Object> operations = redisTemplate.opsForValue();
operations.set(key, value);
redisTemplate.expire(key, expireTime, TimeUnit.SECONDS);
return true;
} catch (Exception e) {
e.printStackTrace();
return false;
}
}
// 从Redis中获取key对应的value
public Object get(String key) {
ValueOperations<String, Object> operations = redisTemplate.opsForValue();
return operations.get(key);
}
// 删除Redis中的key
public boolean delete(String key) {
return redisTemplate.delete(key);
}
}
4.创建一个订单处理类,用于处理超时订单:
java
@Service
public class OrderService {
@Autowired
private RedisUtil redisUtil;
// 将订单放入Redis中,设置过期时间
public void createOrder(String orderId) {
redisUtil.set(orderId, "订单信息", 60 * 30);
}
// 判断订单是否超时
public boolean isOrderTimeout(String orderId) {
Object value = redisUtil.get(orderId);
if (value != null) {
return false;
}
return true;
}
// 处理超时订单
public void handleTimeoutOrder(String orderId) {
// 处理超时订单
redisUtil.delete(orderId);
}
}
5.在需要创建订单的地方调用createOrder方法:
java
@Autowired
private OrderService orderService;
public void createNewOrder(String orderId) {
orderService.createOrder(orderId);
}
6.在需要处理订单的地方定时检查订单是否超时,并调用handleTimeoutOrder方法处理超时订单:
java
@Autowired
private OrderService orderService;
@Scheduled(fixedDelay = 1000)
public void checkTimeoutOrder() {
List<String> orderIds = getOrderList();
for (String orderId : orderIds) {
if (orderService.isOrderTimeout(orderId)) {
orderService.handleTimeoutOrder(orderId);
}
}
}