redisTemplate.opsForHash().entries()报错 Cannot deserialize Failed to deserialize payload

比眉伴天荒 2023-10-04 19:12 1阅读 0赞

## 项目场景： ##

spring boot集成redis

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## 问题描述 ##

使用increment记录数量，调用entries方法反序列化时出错

org.springframework.data.redis.serializer.SerializationException: Cannot deserialize; nested exception is org.springframework.core.serializer.support.SerializationFailedException: Failed to deserialize payload. Is the byte array a result of corresponding serialization for DefaultDeserializer?; nested exception is java.io.EOFException
    at org.springframework.data.redis.serializer.JdkSerializationRedisSerializer.deserialize(JdkSerializationRedisSerializer.java:42)
    at org.springframework.data.redis.core.AbstractOperations.deserializeValue(AbstractOperations.java:274)

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## 原因分析： ##

因为当执行increment方法时，对于入参中的hashVal没有进行序列化，直接调用了redis方法，当获取值时，走了默认的org.springframework.data.redis.serializer.JdkSerializationRedisSerializer,反序列化失败。 解决办法就是将HashValue的序列化方法改为org.springframework.data.redis.serializer.StringRedisSerializer

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## 解决方案： ##

> redisTemplate.setHashValueSerializer(new StringRedisSerializer());

@Configuration
    public class RedisConfig {
        @Bean
        public RedisTemplate<Object, Object> redisTemplate(RedisConnectionFactory redisConnectionFactory) {
            RedisTemplate<Object, Object> redisTemplate = new RedisTemplate<>();
            redisTemplate.setHashValueSerializer(new StringRedisSerializer());
            //如果是json格式用下面这个
           //redisTemplate.setHashValueSerializer(new GenericJackson2JsonRedisSerializer());
            redisTemplate.setConnectionFactory(redisConnectionFactory);
            return redisTemplate;
        }
    }