SpringBoot整合Redis之使用@Cacheable注解
package org.config;
import java.sql.SQLException;
import java.time.Duration;
import java.util.HashMap;
import java.util.Map;
import javax.sql.DataSource;
import org.constant.RedisConstant;
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.RedisCacheConfiguration;
import org.springframework.data.redis.cache.RedisCacheManager;
import org.springframework.data.redis.cache.RedisCacheWriter;
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 org.springframework.jdbc.datasource.DataSourceTransactionManager;
import org.springframework.transaction.PlatformTransactionManager;
import com.fasterxml.jackson.annotation.JsonAutoDetect;
import com.fasterxml.jackson.annotation.PropertyAccessor;
import com.fasterxml.jackson.databind.ObjectMapper;
/**
* 缓存Redis配置
*/
@Configuration
@EnableCaching
public class RedisConfig extends CachingConfigurerSupport {
/**
* 使用Jackson2JsonRedisSerialize 替换默认序列化
*/
@Bean
public RedisTemplate<Object, Object> redisTemplate(RedisConnectionFactory redisConnectionFactory) {
RedisTemplate<Object, Object> redisTemplate = new RedisTemplate<>();
// 使用Jackson2JsonRedisSerialize 替换默认序列化
Jackson2JsonRedisSerializer<Object> jackson2JsonRedisSerializer = new Jackson2JsonRedisSerializer<Object>(
Object.class);
ObjectMapper objectMapper = new ObjectMapper();
objectMapper.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.ANY);
objectMapper.enableDefaultTyping(ObjectMapper.DefaultTyping.NON_FINAL);
jackson2JsonRedisSerializer.setObjectMapper(objectMapper);
// 设置value的序列化规则和 key的序列化规则
redisTemplate.setKeySerializer(new StringRedisSerializer());
redisTemplate.setValueSerializer(jackson2JsonRedisSerializer);
// hash参数序列化方式
redisTemplate.setHashKeySerializer(new StringRedisSerializer());
redisTemplate.setHashValueSerializer(jackson2JsonRedisSerializer);
// 缓存支持回滚(事务管理)
redisTemplate.setEnableTransactionSupport(true);
redisTemplate.setConnectionFactory(redisConnectionFactory);
redisTemplate.afterPropertiesSet();
return redisTemplate;
}
// 配置事务管理器
@Bean
public PlatformTransactionManager transactionManager(DataSource dataSource) throws SQLException {
return new DataSourceTransactionManager(dataSource);
}
/**
* 配置自动化缓存使用的序列化方式以及过期时间
*/
@Bean
public RedisCacheConfiguration redisCacheConfiguration() {
Jackson2JsonRedisSerializer<Object> jackson2JsonRedisSerializer = new Jackson2JsonRedisSerializer<Object>(
Object.class);
ObjectMapper objectMapper = new ObjectMapper();
objectMapper.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.ANY);
objectMapper.enableDefaultTyping(ObjectMapper.DefaultTyping.NON_FINAL);
jackson2JsonRedisSerializer.setObjectMapper(objectMapper);
RedisCacheConfiguration configuration = RedisCacheConfiguration.defaultCacheConfig();
configuration = configuration
.serializeValuesWith(
RedisSerializationContext.SerializationPair.fromSerializer(jackson2JsonRedisSerializer))
.entryTtl(Duration.ofDays(1));
return configuration;
}
/**
* 缓存过期时间自定义配置
*/
@Bean
public CacheManager cacheManager(RedisConnectionFactory redisConnectionFactory) {
// 设置CacheManager的值序列化方式为Jackson2JsonRedisSerializer,默认就是使用StringRedisSerializer序列化key,JdkSerializationRedisSerializer序列化value
Jackson2JsonRedisSerializer<Object> jackson2JsonRedisSerializer = new Jackson2JsonRedisSerializer<Object>(
Object.class);
ObjectMapper objectMapper = new ObjectMapper();
objectMapper.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.ANY);
objectMapper.enableDefaultTyping(ObjectMapper.DefaultTyping.NON_FINAL);
jackson2JsonRedisSerializer.setObjectMapper(objectMapper);
// 配置value序列化方式为Jackson2JsonRedisSerializer,key序列化方式采用默认的StringRedisSerializer
RedisCacheConfiguration cacheConfiguration = RedisCacheConfiguration.defaultCacheConfig().serializeValuesWith(
RedisSerializationContext.SerializationPair.fromSerializer(jackson2JsonRedisSerializer));
// 每一类信息进行缓存配置
Map<String, RedisCacheConfiguration> redisCacheConfigurationMap = new HashMap<>();
// 用户信息
redisCacheConfigurationMap.put(RedisConstant.USER, cacheConfiguration.entryTtl(Duration.ofDays(10))
.disableCachingNullValues().prefixKeysWith(RedisConstant.USER));
// 初始化一个RedisCacheWriter
RedisCacheWriter redisCacheWriter = RedisCacheWriter.nonLockingRedisCacheWriter(redisConnectionFactory);
RedisCacheConfiguration defaultCacheConfig = RedisCacheConfiguration.defaultCacheConfig().serializeValuesWith(
RedisSerializationContext.SerializationPair.fromSerializer(jackson2JsonRedisSerializer));
// 设置默认超过期时间是1天(短时间的已经做了其他的处理,不会采用注解形式加入缓存)
defaultCacheConfig.entryTtl(Duration.ofDays(1));
// 初始化RedisCacheManager
RedisCacheManager cacheManager = new RedisCacheManager(redisCacheWriter, defaultCacheConfig,
redisCacheConfigurationMap);
return cacheManager;
}
}