彈簧數據redis的redisTemplate異常

Question

當我調用get（）方法，異常發生

這裏是代碼

@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); 
} 

當我使用incrBy方法，有沒有異常，但只僅錯誤獲得方法





這裏是堆棧跟蹤---

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) 

Answer 1

默認情況下，RedisTemplate使用JdkSerializationRedisSerializer，所以如果你是一個「設置」，將讓你的龍看起來像這樣在Redis的：

"\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工作，因爲Redis的總是從操作返回龍，所以RedisTemplate不會試圖反序列化結果。然而，「get」的結果經歷了反序列化過程，該過程期望如上所述的格式。

您可以使用您RedisTemplate不同的值串行解決這個問題：

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

或嘗試自帶的彈簧數據redis的的RedisAtomicLong類。

Answer 2

有點沮喪 - 由於對RedisAtomicLong尖端..但這裏是使用HashOps有串鍵，字符串字段和龍價值的解決方案 - 使用Spring的引導，方便配置和

@SpringBootApplication 
@Configuration 
public class DemoApplication { 

    public static void main(String[] args) { 
     final ConfigurableApplicationContext context = SpringApplication.run(DemoApplication.class, args); 
     final DacRepository dacRepository = context.getBean(DacRepository.class); 
     dacRepository.incrKeyExample(); 
    } 


    @Bean 
    public RedisTemplate<String, Long> getLongRedisTemplate(RedisConnectionFactory redisConnectionFactory) { 
     final RedisTemplate<String,Long> redisTemplate = new RedisTemplate<String, Long>(); 
     redisTemplate.setConnectionFactory(redisConnectionFactory); 
     redisTemplate.setHashValueSerializer(new GenericToStringSerializer<Long>(Long.class)); 
     redisTemplate.setKeySerializer(new StringRedisSerializer()); 
     redisTemplate.setValueSerializer(new GenericToStringSerializer<Long>(Long.class)); 
     redisTemplate.setHashKeySerializer(new StringRedisSerializer()); 
     redisTemplate.afterPropertiesSet(); 
     return redisTemplate; 
    } 
} 

import java.util.Set; 

import org.springframework.beans.factory.annotation.Autowired; 
import org.springframework.data.redis.core.HashOperations; 
import org.springframework.data.redis.core.RedisTemplate; 
import org.springframework.stereotype.Repository; 

@Repository 

public class DacRepository { 

    private final HashOperations<String, String, Long> hashOps; 

    @Autowired 
    private final RedisTemplate<String, Long> redisTemplate; 

    @Autowired 
    public DacRepository(RedisTemplate<String, Long> redisTemplate) { 
     this.redisTemplate = redisTemplate; 
     hashOps = redisTemplate.opsForHash(); 

    } 


    public void incrKeyExample() { 
     final Set<String> keys = this.redisTemplate.keys("*"); 
     for(String key: keys) { 
      System.out.println("key: "+ key); 
     } 

     final String key = "deal-1"; 
     final String field = "view"; 
     final Long value = 1L; 
     hashOps.put(key, field, value); 
     final Long delta = 1L; 
     hashOps.increment(key, field, delta); 
     Long val = hashOps.get("deal-1", "view"); 
     System.out.println("Value = "+val); 
    } 

} 




server.port=9001 
spring.redis.host=localhost 
spring.redis.port=6379 
spring.redis.pool.max-idle=8 
spring.redis.pool.min-idle=0 
spring.redis.pool.max-active=8 
spring.redis.pool.max-wait=-1