我們在springboot中使用redis的時候,如果使用了springboot自帶的redis管理,沒有進行特殊配置的話,會出現一種情況,就是我們set到redis中的值,所有的key值我們獲取到的,或者通過工具看到的,都是一堆亂碼,根本
無法識別,其原因,是因爲,springboot默認給redis使用了java自帶的jdk序列化器(JdkSerializationRedisSerializer):
我們需要手工進行配置,使得redis使用StringRedisSerializer 才能正常的存儲和顯示一般字符,那麼需要怎麼進行配置呢?
其實,我們只需要構建一個配置類即可:
import com.fasterxml.jackson.annotation.JsonAutoDetect;
import com.fasterxml.jackson.annotation.PropertyAccessor;
import com.fasterxml.jackson.databind.ObjectMapper;
import org.springframework.cache.CacheManager;
import org.springframework.cache.annotation.CachingConfigurerSupport;
import org.springframework.cache.annotation.EnableCaching;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.redis.cache.RedisCacheManager;
import org.springframework.data.redis.connection.RedisConnectionFactory;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.data.redis.serializer.Jackson2JsonRedisSerializer;
import org.springframework.data.redis.serializer.StringRedisSerializer;
@Configuration
@EnableCaching
public class CacheConfig extends CachingConfigurerSupport {
@SuppressWarnings("rawtypes")
@Bean
public CacheManager cacheManager(RedisTemplate redisTemplate) {
RedisCacheManager rcm = new RedisCacheManager(redisTemplate);
return rcm;
}
@Bean
public RedisTemplate<String, String> redisTemplate(RedisConnectionFactory factory) {
StringRedisTemplate template = new StringRedisTemplate(factory);
Jackson2JsonRedisSerializer jackson2JsonRedisSerializer = new Jackson2JsonRedisSerializer(Object.class);
StringRedisSerializer stringRedisSerializer = new StringRedisSerializer();
ObjectMapper om = new ObjectMapper();
om.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.ANY);
om.enableDefaultTyping(ObjectMapper.DefaultTyping.NON_FINAL);
jackson2JsonRedisSerializer.setObjectMapper(om);
template.setValueSerializer(stringRedisSerializer);
template.afterPropertiesSet();
return template;
}
}
將這個類放在我們的項目中,他會在啓動的時候自動加載,重新配置redis的序列化方式,從而達到我們的目的。