springboot项目启动，需要将msg_info这个表的 词条加载到redis，key+object的形式

可以使用Spring Boot的缓存注解来实现将msg_info表的数据加载到Redis里面。具体步骤如下：

1. 在pom.xml文件中引入Redis和Spring Boot缓存依赖：

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

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

2. 在Spring Boot的配置文件application.properties中配置Redis的连接信息：

spring.redis.host=127.0.0.1
spring.redis.port=6379
spring.redis.password=

3. 在Spring Boot项目中定义一个Redis缓存配置类，用于配置缓存的key和value的序列化方式：

@Configuration
@EnableCaching
public class RedisCacheConfig extends CachingConfigurerSupport {

    @Bean
    public RedisTemplate<String, Object> redisTemplate(RedisConnectionFactory redisConnectionFactory) {
        RedisTemplate<String, Object> redisTemplate = new RedisTemplate<>();
        redisTemplate.setConnectionFactory(redisConnectionFactory);
        redisTemplate.setKeySerializer(new StringRedisSerializer());
        redisTemplate.setValueSerializer(new Jackson2JsonRedisSerializer<>(Object.class));
        return redisTemplate;
    }

    @Bean
    public CacheManager cacheManager(RedisConnectionFactory redisConnectionFactory) {
        RedisCacheConfiguration redisCacheConfiguration = RedisCacheConfiguration.defaultCacheConfig()
                .serializeKeysWith(RedisSerializationContext.SerializationPair.fromSerializer(new StringRedisSerializer()))
                .serializeValuesWith(RedisSerializationContext.SerializationPair.fromSerializer(new Jackson2JsonRedisSerializer<>(Object.class)));

        return RedisCacheManager.builder(redisConnectionFactory)
                .cacheDefaults(redisCacheConfiguration)
                .build();
    }

}

4. 在需要缓存的方法上添加缓存注解，比如@Cacheable，示例代码如下：

@Service
public class MsgInfoService {

    @Autowired
    private MsgInfoMapper msgInfoMapper;

    @Autowired
    private RedisTemplate<String, Object> redisTemplate;

    @Cacheable(value = "msgInfoCache", key = "#id")
    public MsgInfo getById(Long id) {
        return msgInfoMapper.getById(id);
    }

    @Cacheable(value = "msgInfoCache", key = "'all'")
    public List<MsgInfo> getAll() {
        return msgInfoMapper.getAll();
    }

    // 将数据加载到Redis中
    public void loadMsgInfoToRedis() {
        List<MsgInfo> msgInfos = msgInfoMapper.getAll();
        for (MsgInfo msgInfo : msgInfos) {
            redisTemplate.opsForValue().set("msg_info_" + msgInfo.getId(), msgInfo);
        }
    }

}

5. 在Spring Boot的启动类中调用loadMsgInfoToRedis方法，将数据加载到Redis中：

@SpringBootApplication
public class Application {

    public static void main(String[] args) {
        SpringApplication.run(Application.class, args);

        // 加载msg_info表数据到Redis中
        MsgInfoService msgInfoService = SpringContextHolder.getBean(MsgInfoService.class);
        msgInfoService.loadMsgInfoToRedis();
    }

}

这样就可以实现将msg_info表的数据加载到Redis里面了，key为"msg_info_id"，value为MsgInfo对象序列化后的字符串。