spring-data-redis redisTemplate Exception

当我调用get()方法时,发生了异常

这是代码

@Service("RedisService")
public class RedisServiceImpl implements RedisService {

@Autowired
RedisTemplate<String, Long> redisTemplate;

@Override
public Long get(String key) {
    return redisTemplate.opsForValue().get(key);
}

@Override
public Long incrBy(String key, long increment) {
    return redisTemplate.opsForValue().increment(key, increment);
}

当我使用incrBy方法时,没有例外但只有错误只有get方法

这是堆栈跟踪—

java.io.EOFException
    at java.io.ObjectInputStream$PeekInputStream.readFully(ObjectInputStream.java:2280)
    at java.io.ObjectInputStream$BlockDataInputStream.readShort(ObjectInputStream.java:2749)
    at java.io.ObjectInputStream.readStreamHeader(ObjectInputStream.java:779)
    at java.io.ObjectInputStream.<init>(ObjectInputStream.java:279)
    at org.springframework.core.serializer.DefaultDeserializer.deserialize(DefaultDeserializer.java:38)
    at org.springframework.core.serializer.support.DeserializingConverter.convert(DeserializingConverter.java:58)
    at org.springframework.core.serializer.support.DeserializingConverter.convert(DeserializingConverter.java:1)
    at org.springframework.data.redis.serializer.JdkSerializationRedisSerializer.deserialize(JdkSerializationRedisSerializer.java:40)
    at org.springframework.data.redis.core.AbstractOperations.deserializeValue(AbstractOperations.java:198)
    at org.springframework.data.redis.core.AbstractOperations$ValueDeserializingRedisCallback.doInRedis(AbstractOperations.java:50)
    at org.springframework.data.redis.core.RedisTemplate.execute(RedisTemplate.java:162)
    at org.springframework.data.redis.core.RedisTemplate.execute(RedisTemplate.java:133)
    at org.springframework.data.redis.core.AbstractOperations.execute(AbstractOperations.java:84)
    at org.springframework.data.redis.core.DefaultValueOperations.get(DefaultValueOperations.java:42)
    at net.daum.air21.bot.common.service.RedisServiceImpl.get(RedisServiceImpl.java:29)
    at net.daum.air21.bot.user.service.SeraCoffeeServiceImpl.getCurrentCount(SeraCoffeeServiceImpl.java:41)

解决方法:

默认情况下,RedisTemplate使用JdkSerializationRedisSerializer,因此如果你执行了“set”,它会使你的Long在Redis中看起来像这样：

"\xac\xed\x00\x05sr\x00\x0ejava.lang.Long;\x8b\xe4\x90\xcc\x8f#\xdf\x02\x00\x01J\x00\x05valuexr\x00\x10java.lang.Number\x86\xac\x95\x1d\x0b\x94\xe0\x8b\x02\x00\x00xp\x00\x00\x00\x00\x00\x00\x00\x04"

IncrBy有效,因为Redis总是从该操作返回Long,因此RedisTemplate不会尝试反序列化结果.然而,“get”的结果经历了反序列化过程,该过程期望具有如上所述的格式.

您可以通过在RedisTemplate上使用不同的值序列化器来解决此问题：

redisTemplate.setValueSerializer(new GenericToStringSerializer<Long>(Long.class));

或者尝试spring-data-redis附带的RedisAtomicLong类.

标签：spring,redis,spring-data-redis,jedis
来源： https://codeday.me/bug/20190714/1454787.html