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我用的2.6.0版本
<dependency>
    <groupId>org.apache.commons</groupId>
    <artifactId>commons-pool2</artifactId>
</dependency>

import org.apache.commons.pool2.impl.GenericObjectPoolConfig;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.PropertySource;
import org.springframework.data.redis.connection.RedisPassword;
import org.springframework.data.redis.connection.RedisStandaloneConfiguration;
import org.springframework.data.redis.connection.lettuce.LettuceClientConfiguration;
import org.springframework.data.redis.connection.lettuce.LettuceConnectionFactory;
import org.springframework.data.redis.connection.lettuce.LettucePoolingClientConfiguration;

import java.time.Duration;

@Configuration
@PropertySource("classpath:redis.properties")
public class LettuceRedisConfig {

    @Value("${spring.redis.database}")
    private int database;

    @Value("${spring.redis.host}")
    private String host;

    @Value("${spring.redis.password}")
    private String password;

    @Value("${spring.redis.port}")
    private int port;

    @Value("${spring.redis.timeout}")
    private long timeout;

    @Value("${spring.redis.lettuce.pool.max-idle}")
    private int maxIdle;

    @Value("${spring.redis.lettuce.pool.min-idle}")
    private int minIdle;

    @Value("${spring.redis.lettuce.pool.max-active}")
    private int maxActive;

    @Value("${spring.redis.lettuce.pool.max-wait}")
    private long maxWait;

    @Bean
    LettuceConnectionFactory lettuceConnectionFactory(GenericObjectPoolConfig genericObjectPoolConfig) {
        // 单机版配置
        RedisStandaloneConfiguration redisStandaloneConfiguration = new RedisStandaloneConfiguration();
        redisStandaloneConfiguration.setDatabase(database);
        redisStandaloneConfiguration.setHostName(host);
        redisStandaloneConfiguration.setPort(port);
        redisStandaloneConfiguration.setPassword(RedisPassword.of(password));

        // 集群版配置
//        RedisClusterConfiguration redisClusterConfiguration = new RedisClusterConfiguration();
//        String[] serverArray = clusterNodes.split(",");
//        Set<RedisNode> nodes = new HashSet<RedisNode>();
//        for (String ipPort : serverArray) {
//            String[] ipAndPort = ipPort.split(":");
//            nodes.add(new RedisNode(ipAndPort[0].trim(), Integer.valueOf(ipAndPort[1])));
//        }
//        redisClusterConfiguration.setPassword(RedisPassword.of(password));
//        redisClusterConfiguration.setClusterNodes(nodes);
//        redisClusterConfiguration.setMaxRedirects(maxRedirects);

        LettuceClientConfiguration clientConfig = LettucePoolingClientConfiguration.builder()
                .commandTimeout(Duration.ofMillis(timeout))
                .poolConfig(genericObjectPoolConfig)
                .build();

        LettuceConnectionFactory factory = new LettuceConnectionFactory(redisStandaloneConfiguration,clientConfig);
        return factory;
    }

    /**
     * GenericObjectPoolConfig 连接池配置
     *
     * @return
     */
    @Bean
    public GenericObjectPoolConfig genericObjectPoolConfig() {
        GenericObjectPoolConfig genericObjectPoolConfig = new GenericObjectPoolConfig();
        genericObjectPoolConfig.setMaxIdle(maxIdle);
        genericObjectPoolConfig.setMinIdle(minIdle);
        genericObjectPoolConfig.setMaxTotal(maxActive);
        genericObjectPoolConfig.setMaxWaitMillis(maxWait);
        return genericObjectPoolConfig;
    }
}