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系统数据字典自动翻译成字典文本。可集合系统数据库中存储的用户数据字典，也可使用枚举做系统数据字典，主要用在返回数据给前端时自动把字典值翻译成字典文本信息； The system data dictionary is automatically translated into dictionary text. The user data dictionary stored in the system database can be aggregated, and the enumeration can also be used as the system data dictionary. It is mainly used to automatically translate dictionary values into dictionary text information when returning data to the front end.

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package com.houkunlin.system.dict.starter;

import com.houkunlin.system.dict.starter.bean.DictTypeVo;
import lombok.AllArgsConstructor;
import org.springframework.boot.autoconfigure.condition.ConditionalOnClass;
import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean;
import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.redis.connection.RedisConnectionFactory;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.listener.RedisMessageListenerContainer;
import org.springframework.data.redis.serializer.Jackson2JsonRedisSerializer;
import org.springframework.data.redis.serializer.RedisSerializer;

/**
 * Redis 配置（在存在 Redis 环境时自动配置相关对象，无论后续是否需要）
 *
 * @author HouKunLin
 */
@ConditionalOnClass(RedisTemplate.class)
@Configuration(proxyBeanMethods = false)
@AllArgsConstructor
public class DictRedisConfiguration {
    /**
     * 系统字典 RedisTemplate Bean 名称
     */
    public static final String DICT_REDIS_BEAN_NAME = "DictTypeRedisTemplate";

    /**
     * 创建一个默认的 DictTypeVo 类型 Redis 客户端
     *
     * @param connectionFactory RedisConnectionFactory
     * @return RedisTemplate<String, DictTypeVo>
     */
    @ConditionalOnMissingBean(name = DICT_REDIS_BEAN_NAME)
    @Bean(DICT_REDIS_BEAN_NAME)
    public RedisTemplate dictTypeRedisTemplate(final RedisConnectionFactory connectionFactory) {
        final RedisTemplate redisTemplate = new RedisTemplate<>();
        redisTemplate.setBeanClassLoader(Thread.currentThread().getContextClassLoader());
        redisTemplate.setKeySerializer(RedisSerializer.string());
        redisTemplate.setValueSerializer(new Jackson2JsonRedisSerializer<>(DictTypeVo.class));
        redisTemplate.setHashKeySerializer(RedisSerializer.string());
        redisTemplate.setHashValueSerializer(RedisSerializer.string());
        redisTemplate.setConnectionFactory(connectionFactory);
        redisTemplate.afterPropertiesSet();
        return redisTemplate;
    }

    /**
     * 创建一个默认的 Redis 消息监听容器（在后续可用在使用 Redis 发布/订阅 功能进行字典刷新通知）
     *
     * @param connectionFactory RedisConnectionFactory
     * @return RedisMessageListenerContainer
     */
    @ConditionalOnProperty(prefix = "system.dict", name = "mq-type", havingValue = "REDIS")
    @ConditionalOnMissingBean
    @Bean
    public RedisMessageListenerContainer redisMessageListenerContainer(final RedisConnectionFactory connectionFactory) {
        final RedisMessageListenerContainer container = new RedisMessageListenerContainer();
        container.setConnectionFactory(connectionFactory);
        return container;
    }
}