springboot集成redis并使用redis生成全局唯一索引ID

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

spring:
  #redis 缓存
  redis:
     connect-timeout: 180000 #连接超时时间
    lettuce:
      pool:
        #连接池最大连接数
        max-active: 8
        #最大阻塞等待时间(负数表示没限制)
        max-wait: 1
        #连接池最大空闲连接
        max-idle: 5
        #连接池最小空闲连接
        min-idle: 0
    #单机模式
#    database: 0 # 集群模式该参数不生效
#    host: 127.0.0.1
#    port: 6379
    #集群模式开启
    cluster:
      nodes: 127.0.0.1:6379,127.0.0.1:7001,127.0.0.1:7002,127.0.0.1:7003,127.0.0.1:7004,127.0.0.1:7005
      max-redirects: 3
    password:

import com.baomidou.mybatisplus.core.incrementer.IdentifierGenerator;
import com.wd.basic.common.support.component.CustomIdGenerator;
import lombok.extern.slf4j.Slf4j;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.redis.core.StringRedisTemplate;

import javax.annotation.Resource;

/**
 * mybatis 配置
 *
 * @author 上官婉儿
 * @date 2022/03/21
 */
@Slf4j
@Configuration
public class MybatisPlusConfig {

    @Resource
    private StringRedisTemplate stringRedisTemplate;

    @Bean
    public IdentifierGenerator idGenerator() {
        return new CustomIdGenerator(stringRedisTemplate);
    }
}

import cn.hutool.core.date.DatePattern;
import cn.hutool.core.date.DateUtil;
import cn.hutool.core.util.StrUtil;
import com.baomidou.mybatisplus.core.incrementer.IdentifierGenerator;
import com.wd.basic.common.exception.BasicException;
import com.wd.basic.common.exception.enums.IDGeneratorExceptionEnum;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.data.redis.support.atomic.RedisAtomicLong;

import java.util.Date;
import java.util.Objects;
import java.util.concurrent.TimeUnit;

/**
 * 自定义id发电机
 *
 * @author 上官婉儿
 * @date 2022/03/21
 */
public class CustomIdGenerator {

    private static final String I_KEY_PREFIX = "IKey:generator";

    public static final int KEY_EXPIRE_TIME = 2;

    private final StringRedisTemplate stringRedisTemplate;

    public CustomIdGenerator(StringRedisTemplate stringRedisTemplate) {
        this.stringRedisTemplate = stringRedisTemplate;
    }

    /**
     * 年月日时分秒 +6位 redis返回的自增序列（如000001、000002、000003...）
     * redis返回的自增序列 规则：
     * 根据传入的 key(相当于字段名)生成自增的序列,2s后重新自增;
     * 由于redis的incr原子性，也能保证每次返回的结果不会出现相同的值，
     */
    @Override
    public String nextUUID(Object entity) {
        String bizKey = entity.getClass().getName();
        String dateStr = DateUtil.format(new Date(), DatePattern.PURE_DATETIME_MS_FORMATTER);
        RedisAtomicLong counter = new RedisAtomicLong(I_KEY_PREFIX + bizKey, Objects.requireNonNull(stringRedisTemplate.getConnectionFactory()));
        counter.expire(KEY_EXPIRE_TIME, TimeUnit.SECONDS);
        long redisId = counter.incrementAndGet();
        String redisIdStr = StrUtil.fillBefore(String.valueOf(redisId), '0',6);
        return dateStr + redisIdStr;
    }
}