RedisTemplate操作redis时，key值出现\xac\xed\x00\x05t\x00等前缀

叁歲伎倆 2021-09-13 18:54 339阅读 0赞

## RedisTemplate操作redis时，key值出现\\xac\\xed\\x00\\x05t\\x00等前缀 ##

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3N1bnJqX25pdQ_size_16_color_FFFFFF_t_70]  
其实这个不影响key的读取和删除，但是不太美观。主要原因是因为RedisTemplate默认序列化方式用的是JdkSerializationRedisSerializer，我们把默认的序列化方式改成Jackson2JsonRedisSerializer即可。  
具体操作方法为，在项目中任何地方创建redis配置类即可：

其实说白了就是获取到RedisTemplate，然后对其进行StringRedisSerializer序列化，写到redis中的就是没有前缀的。即每次写如之前调用下边的这个方法即可

private void setRedisSerializer() { 
    		Jackson2JsonRedisSerializer serializer = new Jackson2JsonRedisSerializer(Object.class);
    		ObjectMapper mapper = new ObjectMapper();
    		mapper.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.ANY);
    		mapper.enableDefaultTyping(ObjectMapper.DefaultTyping.NON_FINAL);
    		serializer.setObjectMapper(mapper);
    		//对String值序列化
    		redisTemplate.setValueSerializer(serializer);
    		//对hash值序列化
    		redisTemplate.setHashValueSerializer(serializer);
    		//使用StringRedisSerializer来序列化和反序列化redis的key值
    		redisTemplate.setKeySerializer(new StringRedisSerializer());
    		//对hash中的field进行序列化
    		redisTemplate.setHashKeySerializer(new StringRedisSerializer());
    	}

完整的

import com.fasterxml.jackson.annotation.JsonAutoDetect.Visibility;
    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.connection.jedis.JedisConnectionFactory;
    import org.springframework.data.redis.core.RedisTemplate;
    import org.springframework.data.redis.serializer.Jackson2JsonRedisSerializer;
    import org.springframework.data.redis.serializer.StringRedisSerializer;
    
    import java.net.UnknownHostException;
    
    @Configuration
    public class RedisConfig { 
        @Bean
        public RedisTemplate redisTemplate(RedisConnectionFactory redisConnectionFactory)
                throws UnknownHostException { 
            RedisTemplate template = new RedisTemplate<>();
            template.setConnectionFactory(redisConnectionFactory);
            JedisConnectionFactory connectionFactory = (JedisConnectionFactory) template.getConnectionFactory();
            connectionFactory.setDatabase(0);//切换0号数据库
    
            //使用Jackson2JsonRedisSerializer来序列化和反序列化redis的value值（默认使用JDK的序列化方式）
            Jackson2JsonRedisSerializer serializer = new Jackson2JsonRedisSerializer(Object.class);
            ObjectMapper mapper = new ObjectMapper();
            mapper.setVisibility(PropertyAccessor.ALL, Visibility.ANY);
            mapper.enableDefaultTyping(ObjectMapper.DefaultTyping.NON_FINAL);
            serializer.setObjectMapper(mapper);
            //对String值序列化
            template.setValueSerializer(serializer);
            //对hash值序列化
            template.setHashValueSerializer(serializer);
            //使用StringRedisSerializer来序列化和反序列化redis的key值
            template.setKeySerializer(new StringRedisSerializer());
            //对hash中的field进行序列化
            template.setHashKeySerializer(new StringRedisSerializer());
            template.afterPropertiesSet();
            return template;
    
        }
    }

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