项目场景：

spring boot集成redis

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)

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

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;
    }
}