SpringBoot 取出redis里面的數據，報錯: org.springframework.data.redis.serializer.SerializationException: Could not read JSON: Unexpected character (',' (code 44)): Expected space separating root-level values

redis存儲的數據格式：

報錯信息

解決方法

**方式一： **
使用StringRedisTemplate

方式二：
修改RedisConfig ，將value序列化方式由jackson, 改成 stringRedisSerialize

import com.fasterxml.jackson.annotation.JsonAutoDetect;
import com.fasterxml.jackson.annotation.PropertyAccessor;
import com.fasterxml.jackson.databind.ObjectMapper;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.redis.connection.RedisConnectionFactory;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.serializer.Jackson2JsonRedisSerializer;
import org.springframework.data.redis.serializer.StringRedisSerializer;
 
@Configuration
public class RedisConfig {
 
    @Bean
    @SuppressWarnings("all")
    public RedisTemplate<String, Object> redisTemplate(RedisConnectionFactory factory) {
        RedisTemplate<String, Object> template = new RedisTemplate<String, Object>();
        template.setConnectionFactory(factory);
        Jackson2JsonRedisSerializer jackson2JsonRedisSerializer = new Jackson2JsonRedisSerializer(Object.class);
        ObjectMapper om = new ObjectMapper();
        om.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.ANY);
        om.enableDefaultTyping(ObjectMapper.DefaultTyping.NON_FINAL);
        jackson2JsonRedisSerializer.setObjectMapper(om);
 
        StringRedisSerializer stringRedisSerializer = new StringRedisSerializer();
        // key采用String的序列化方式
        template.setKeySerializer(stringRedisSerializer);
        // hash的key也采用String的序列化方式
        template.setHashKeySerializer(stringRedisSerializer);
 
        // value序列化方式采用 String
        template.setValueSerializer(stringRedisSerializer);
        // hash的value序列化方式采用String
        template.setHashValueSerializer(stringRedisSerializer);
 
 
        template.afterPropertiesSet();
        return template;
    }
}

注意： 但方式二可能會影響到之前用json數據格式存儲的值的讀取，請自測一下。

報錯原因
redis數據的值不是json格式，所有用jackson方式讀取解析時會報異常