有关Springboot里redis的注解@Cacheable问题

Fools_ 2019-06-11 05:51:04

在使用@Cacheable时会报这个错误



java.lang.ClassCastException: com.slz.demo.pojo.Strategy cannot be cast to com.slz.demo.pojo.Strategy

代码中时这样的



@Cacheable(cacheNames = "strategy",key = "#id")

    public Strategy findById(String id) {

        return strategiesDao.findById(id).orElse(null);

    }

redis的参数配置时这样的

@Configuration

@EnableCaching

@Slf4j

public class RedisCacheConfig extends CachingConfigurerSupport {





    @Bean

    public CacheManager cacheManager(RedisConnectionFactory redisConnectionFactory){

        RedisCacheConfiguration redisCacheConfiguration = RedisCacheConfiguration.defaultCacheConfig()

                .entryTtl(Duration.ofHours(1)); // 设置缓存有效期一小时

        return RedisCacheManager

                .builder(RedisCacheWriter.nonLockingRedisCacheWriter(redisConnectionFactory))

                .cacheDefaults(redisCacheConfiguration).build();

    }



    @Bean

    public RedisTemplate<String, String> redisTemplate(RedisConnectionFactory factory){

        RedisTemplate<String, String> redisTemplate=new RedisTemplate<String, String>();

        redisTemplate.setConnectionFactory(factory);





        RedisSerializer<String> redisSerializer=new StringRedisSerializer();

        redisTemplate.setKeySerializer(redisSerializer);

        redisTemplate.setHashKeySerializer(redisSerializer);

        return redisTemplate;

    }





    @Override

    public CacheErrorHandler errorHandler(){

        CacheErrorHandler cacheErrorHandler=new CacheErrorHandler() {



            @Override

            public void handleCachePutError(RuntimeException e, Cache arg1, Object arg2, Object arg3) {

                // TODO Auto-generated method stub

                RedisErrorExceptionLog(e,arg2,arg1);

            }



            @Override

            public void handleCacheGetError(RuntimeException e, Cache arg1,Object arg2) {

                // TODO Auto-generated method stub

                RedisErrorExceptionLog(e,arg2,arg1);

            }



            @Override

            public void handleCacheEvictError(RuntimeException e, Cache arg1,Object arg2) {

                // TODO Auto-generated method stub

                RedisErrorExceptionLog(e,arg2,arg1);

            }



            @Override

            public void handleCacheClearError(RuntimeException e, Cache arg1) {

                // TODO Auto-generated method stub

                RedisErrorExceptionLog(e,null,arg1);

            }

        };

        return cacheErrorHandler;

    }

    protected void RedisErrorExceptionLog(Exception e,Object key,Cache cache){

        log.error("redis异常: cache=[{}],key=[{}],exception={}",cache.getName(),key,e.getMessage());

    }

}