发生异常错误信息（redis缓存处理序列化时）：

org.springframework.data.redis.serializer.SerializationException: Could not write JSON: No serializer found for class org.springframework.cache.interceptor.SimpleKey and no properties discovered to create BeanSerializer (to avoid exception, disable SerializationFeature.FAIL_ON_EMPTY_BEANS); nested exception is com.fasterxml.jackson.databind.JsonMappingException: No serializer found for class org.springframework.cache.interceptor.SimpleKey and no properties discovered to create BeanSerializer (to avoid exception, disable SerializationFeature.FAIL_ON_EMPTY_BEANS)

解决办法（定义一个ObjectMapper Bean,jackson2JsonRedisSerializer设置ObjectMapper为自己定义的Bean）：

@Bean
public ObjectMapper objectMapper() {
    return new ObjectMapper().disable(SerializationFeature.FAIL_ON_EMPTY_BEANS);
}
/**
 * Integer redis template redis template.
 *
 * @param redisConnectionFactory the redis connection factory
 * @return the redis template
 */
@Bean
public RedisTemplate<Long, UserStudentInfo> userStudentRedisTemplate(RedisConnectionFactory
                                                                   redisConnectionFactory) {
    RedisTemplate<Long, UserStudentInfo> redisTemplate = new RedisTemplate<>();
    Jackson2JsonRedisSerializer<UserStudentInfo> jackson2JsonRedisSerializer = new Jackson2JsonRedisSerializer<>
            (UserStudentInfo.class);
    jackson2JsonRedisSerializer.setObjectMapper(objectMapper());

    redisTemplate.setConnectionFactory(redisConnectionFactory);
    redisTemplate.setKeySerializer(jackson2JsonRedisSerializer);
    redisTemplate.setHashKeySerializer(stringRedisSerializer);
    redisTemplate.setValueSerializer(jackson2JsonRedisSerializer);
    redisTemplate.setHashValueSerializer(jackson2JsonRedisSerializer);
    redisTemplate.afterPropertiesSet();
    return redisTemplate;
}