redis 监听过期的key

要先配置好服务端，项目中在正常使用redis
pom引用

<dependency>
  <groupId>org.springframework.boot</groupId>
  <artifactId>spring-boot-starter-data-redis</artifactId>
</dependency>

配置文件

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.redis.connection.RedisConnectionFactory;
import org.springframework.data.redis.listener.RedisMessageListenerContainer;
/**
 * @author X-MD
 * @Date 2020/9/25 0025
 * @description:
 **/
@Configuration
public class RedisListenerConfig {
    @Bean
    RedisMessageListenerContainer container(RedisConnectionFactory connectionFactory) {
        RedisMessageListenerContainer container = new RedisMessageListenerContainer();
        container.setConnectionFactory(connectionFactory);
        return container;
    }
}

监听文件（触发处理业务）

import lombok.extern.slf4j.Slf4j;
import org.springframework.data.redis.connection.Message;
import org.springframework.data.redis.listener.KeyExpirationEventMessageListener;
import org.springframework.data.redis.listener.RedisMessageListenerContainer;
import org.springframework.stereotype.Component;
/**
 * @author X-MD
 * @Date 2020/9/25 0025
 * @description:
 **/
@Component
@Slf4j
public class RedisKeyExpirationListener extends KeyExpirationEventMessageListener {
    public RedisKeyExpirationListener(RedisMessageListenerContainer listenerContainer) {
        super(listenerContainer);
    }
    @Override
    public void onMessage(Message message, byte[] pattern) {
//        // 用户做自己的业务处理即可,注意message.toString()可以获取失效的key
        String expiredKey = message.toString();
        log.info("------------------redis key 失效; key = " + expiredKey);
        if (expiredKey.startsWith("delay")) {
            // 获取订单orderNO
            String orderNo = expiredKey.substring(expiredKey.lastIndexOf(":") + 1);
            // 将待支付的订单改为已取消(超时未支付)
            System.out.println("orderNo" + orderNo);
        }
    }
}

向redis里设置值

import com.redis.config.IbaseRedisService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

/**
 * @author X-MD
 * @Date 2020/9/25 0025
 * @description:
 **/
@RequestMapping("/res")
@RestController
@Slf4j
public class RedisListener {

    @Autowired
    IbaseRedisService ibaseRedisService;

    @GetMapping
    public void test(){
        ibaseRedisService.set("delay:121221212","",60L,0);
    }
}