今天在做redis緩存時,存放數據後發現每個key前面都會新增一些字符,比如:
其實這個不影響key的讀取和刪除,但是不太美觀。主要原因是因爲RedisTemplate默認序列化方式用的是JdkSerializationRedisSerializer,我們把默認的序列化方式改成Jackson2JsonRedisSerializer即可。
具體操作方法爲,在項目中任何地方創建redis配置類即可:
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;
/**
* @author
* <p>
* 2018年4月24日
* TODO 配置redis序列化 如果不配置,無法獲取redis正常編碼的值
*/
@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);//切換0號數據庫
//使用Jackson2JsonRedisSerializer來序列化和反序列化redis的value值(默認使用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);
//對String值序列化
template.setValueSerializer(serializer);
//對hash值序列化
template.setHashValueSerializer(serializer);
//使用StringRedisSerializer來序列化和反序列化redis的key值
template.setKeySerializer(new StringRedisSerializer());
//對hash中的field進行序列化
template.setHashKeySerializer(new StringRedisSerializer());
template.afterPropertiesSet();
return template;
}
}
pom文件需要引入:
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-redis</artifactId>
</dependency>