Spring Boot自定义Redis缓存配置,保存value格式JSON字符串

部分内容转自
https://blog.csdn.net/caojidasabi/article/details/83059642

内容更新自2020-04-30 17:23:37

自定义Redis配置
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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.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.redis.cache.RedisCacheConfiguration;
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.serializer.Jackson2JsonRedisSerializer;
import org.springframework.data.redis.serializer.RedisSerializationContext;
import org.springframework.data.redis.serializer.StringRedisSerializer;

import java.time.Duration;

@Configuration
public class MyRedisConfig
{

//自定义RedisTemplate
@Bean("redisTemplate")//Bean的id默认是方法名,也可以自定义 @Bean("my_redis_template")
public RedisTemplate my_redis_template(RedisConnectionFactory redisConnectionFactory)
{
RedisTemplate template = new RedisTemplate<>();
template.setConnectionFactory(redisConnectionFactory);
//使用JSON格式的序列化,保存
template.setDefaultSerializer(new Jackson2JsonRedisSerializer<>(Object.class));
return template;
}

//自定义cacheManager缓存管理器
//使缓存注解@Cacheable能以JSON形式放入Redis
//如果不自定义CacheManager,又引入Redis情况下,则使用Redis缓存的默认配置。
@Bean("redisCacheManager")
public CacheManager cacheManager(RedisConnectionFactory factory)
{
Jackson2JsonRedisSerializer<Object> jackson2JsonRedisSerializer = new Jackson2JsonRedisSerializer<>(Object.class);
//解决查询缓存转换异常的问题
ObjectMapper om = new ObjectMapper();
om.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.ANY);
om.enableDefaultTyping(ObjectMapper.DefaultTyping.NON_FINAL);
jackson2JsonRedisSerializer.setObjectMapper(om);

//配置序列化(解决乱码的问题)
RedisCacheConfiguration config = RedisCacheConfiguration.defaultCacheConfig()
.entryTtl(Duration.ZERO)
.serializeKeysWith(RedisSerializationContext.SerializationPair.fromSerializer(new StringRedisSerializer()))
.serializeValuesWith(RedisSerializationContext.SerializationPair.fromSerializer(jackson2JsonRedisSerializer))
.disableCachingNullValues();

return RedisCacheManager.builder(factory).cacheDefaults(config).build();
}
}