springBoot集成redis的key,value序列化的相关问题

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

@Service
public class RedisCacheServiceImpl<K,V> implements CacheService<K,V> {

  @Autowired
  RedisTemplate<K, V> redisTemplate;
  
  public void set(K key, V value) {
    redisTemplate.opsForValue().set(key, value);
  }
}

/**
 * 缓存管理（注解用）
 * @author Administrator
 */
@Configuration
@EnableCaching//启用缓存的意思
public class CacheConfig extends CachingConfigurerSupport{
  
  /**
   * 自定义key. 这个可以不用
   * 此方法将会根据类名+方法名+所有参数的值生成唯一的一个key,即使@Cacheable中的value属性一样，key也会不一样。
   */
  /* @Override
  public KeyGenerator keyGenerator() {
    System.out.println("RedisCacheConfig.keyGenerator()");
    returnnew KeyGenerator() {
      @Override
      public Object generate(Object o, Method method, Object... objects) {
       // This will generate a unique key of the class name, the method name
       //and all method parameters appended.
       StringBuilder sb = new StringBuilder();
       sb.append(o.getClass().getName());
       sb.append(method.getName());
       for (Object obj : objects) {
         sb.append(obj.toString());
       }
       System.out.println("keyGenerator=" + sb.toString());
       returnsb.toString();
      }
    };
  }
  */
  
  @Bean
  public CacheManager cacheManager(RedisTemplate redisTemplate) {
    RedisCacheManager rcm = new RedisCacheManager(redisTemplate);
    /* //设置缓存过期时间
    // rcm.setDefaultExpiration(60);//秒
    //设置value的过期时间
    Map<String,Long> map=new HashMap();
    map.put("test",60L);
    rcm.setExpires(map);*/
    return rcm;
  }
  /**
   * RedisTemplate配置
   * @param factory
   * @return
   */
  @Bean
  public RedisTemplate<String, String> redisTemplate(RedisConnectionFactory factory) {
    StringRedisTemplate template = new StringRedisTemplate(factory);
    //定义key序列化方式
    //RedisSerializer<String> redisSerializer = new StringRedisSerializer();//Long类型会出现异常信息;需要我们上面的自定义key生成策略，一般没必要
    //定义value的序列化方式
    Jackson2JsonRedisSerializer jackson2JsonRedisSerializer = new Jackson2JsonRedisSerializer(Object.class);
    ObjectMapper om = new ObjectMapper();
    om.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.ANY);
    om.enableDefaultTyping(ObjectMapper.DefaultTyping.NON_FINAL);
    jackson2JsonRedisSerializer.setObjectMapper(om);
    
    // template.setKeySerializer(redisSerializer);
    template.setValueSerializer(jackson2JsonRedisSerializer);
    template.setHashValueSerializer(jackson2JsonRedisSerializer);
    template.afterPropertiesSet();
    return template;
  }

}