인프런 커뮤니티 질문&답변

package org.example.config

import org.redisson.Redisson
import org.redisson.api.RedissonClient
import org.redisson.config.Config
import org.springframework.beans.factory.annotation.Value
import org.springframework.context.annotation.Bean
import org.springframework.context.annotation.Configuration
import org.springframework.context.annotation.Primary
import org.springframework.data.redis.connection.RedisConnectionFactory
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.core.RedisTemplate
import org.springframework.data.redis.serializer.Jackson2JsonRedisSerializer
import org.springframework.data.redis.serializer.StringRedisSerializer
import java.time.Duration

@Configuration
class RedisConfig {

    @Bean
    fun redisConnectionFactory(
        @Value("\${database.redis.host}") host: String,
        @Value("\${database.redis.port}") port: Int,
        @Value("\${database.redis.password:${null}}") password: String?,
        @Value("\${database.redis.database:${0}}") database: Int,
        @Value("\${database.redis.timeout:${10000}}") timeout: Long,
    ) : LettuceConnectionFactory {
        val config = RedisStandaloneConfiguration(host, port).apply {
            password?.let { setPassword(it) }
            setDatabase(database)
        }

        val clientConfig = LettuceClientConfiguration.builder()
            .commandTimeout(Duration.ofSeconds(timeout))
            .build()

        return LettuceConnectionFactory(config,clientConfig)
    }

    @Bean
    @Primary
    fun redisTemplate(connectionFactory : RedisConnectionFactory): RedisTemplate<String, String> {
        val template = RedisTemplate<String, String>()

        template.connectionFactory = connectionFactory
        template.keySerializer = StringRedisSerializer()
        template.valueSerializer = Jackson2JsonRedisSerializer(String::class.java)
        template.hashKeySerializer = StringRedisSerializer()
        template.hashValueSerializer = Jackson2JsonRedisSerializer(String::class.java)
        template.afterPropertiesSet()

        return template
    }


    @Bean
    fun redissonClient(
        @Value("\${database.redisson.host}") host: String,
        @Value("\${database.redisson.timeout}") timeout: Int,
        @Value("\${database.redisson.password:${null}}") password: String?,
    ) : RedissonClient {
        val config = Config()

        val singleServerConfig = config.useSingleServer()
            .setAddress(host)
            .setTimeout(timeout)

        if (!password.isNullOrBlank()) {
            singleServerConfig.setPassword(password)
        }

        return Redisson.create(config).also {
            println("redisson create success")
        }
    }


}

• An annotation argument must be a compile-time constant

와 같은 에러가 나는데 강의 파일 코드로도 같은 에러가 납니다