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的注解@PostConstruct在项目启动时加载msg_info表的词条到Redis中。具体实现步骤如下：

1. 添加Redis依赖，可以使用Spring Data Redis：

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

2. 在RedisConfig类中配置RedisTemplate和StringRedisTemplate：

@Configuration
public class RedisConfig {
 
    @Bean
    public RedisTemplate<String, Object> redisTemplate(RedisConnectionFactory factory) {
        RedisTemplate<String, Object> redisTemplate = new RedisTemplate<>();
        redisTemplate.setConnectionFactory(factory);
        redisTemplate.setKeySerializer(new StringRedisSerializer());
        redisTemplate.setValueSerializer(new GenericJackson2JsonRedisSerializer());
        return redisTemplate;
    }
 
    @Bean
    public StringRedisTemplate stringRedisTemplate(RedisConnectionFactory factory) {
        StringRedisTemplate stringRedisTemplate = new StringRedisTemplate();
        stringRedisTemplate.setConnectionFactory(factory);
        return stringRedisTemplate;
    }
}

3. 在MsgInfoService类中注入RedisTemplate和MsgInfoMapper，实现加载msg_info表数据到Redis中的方法：

@Service
public class MsgInfoService {
 
    @Autowired
    private RedisTemplate<String, Object> redisTemplate;
 
    @Autowired
    private MsgInfoMapper msgInfoMapper;
 
    @PostConstruct
    public void init() {
        List<MsgInfo> msgInfos = msgInfoMapper.findAll();
        for (MsgInfo msgInfo : msgInfos) {
            String key = "msg_info:" + msgInfo.getId();
            redisTemplate.opsForValue().set(key, msgInfo);
        }
    }
 
    //...
}

4. 在启动类上添加@EnableCaching注解开启缓存功能：

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

这样在项目启动时就会自动加载msg_info表的词条到Redis中，以key+object的形式存储。