Springboot @Cacheable緩存過期時間

參考： SpringBoot 2.X @Cacheable，redis-cache 如何根據key設置緩存時間？

github源碼地址：https://github.com/SimonHu1993/SpringbootShiroDemo 

@Cacheable(value = "Menus", unless = "#result == null or #result.size() == 0")
    public List<SysMenuEntity> queryAllMenu() {
        return sysMenuDao.selectList(null);
    }

這里需要加一個redis配置類

import com.fasterxml.jackson.annotation.JsonAutoDetect;
import com.fasterxml.jackson.annotation.PropertyAccessor;
import com.fasterxml.jackson.databind.ObjectMapper;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.cache.CacheManager;
import org.springframework.cache.interceptor.KeyGenerator;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.io.ResourceLoader;
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.serializer.Jackson2JsonRedisSerializer;
import org.springframework.data.redis.serializer.RedisSerializationContext;

import java.time.Duration;
import java.util.HashMap;
import java.util.Map;

/**
 * @Author: SimonHu
 * @Date: 2020/7/15 13:17
 * @Description:給@Cacheable配置過期時間
 */
@Configuration
public class RedisCacheConfig {
    @Value("${zihexin.globalSessionTimeout}")
    private long globalSessionTimeout;
    @Autowired
    ResourceLoader resourceLoader;
    
    @Bean
    public CacheManager cacheManager(RedisConnectionFactory redisConnectionFactory) {
        return RedisCacheManager.builder(redisConnectionFactory)
                //默認的緩存配置(沒有配置鍵的key均使用此配置)
                .cacheDefaults(getDefaultCacheConfiguration())
                .withInitialCacheConfigurations(getCacheConfigurations())
                //在spring事務正常提交時才緩存數據
                .transactionAware()
                .build();
    }
    
    private Map<String, RedisCacheConfiguration> getCacheConfigurations() {
        Map<String, RedisCacheConfiguration> configurationMap = new HashMap<>();
        //緩存鍵,且3600*10秒后過期,3600*10秒后再次調用方法時需要重新緩存
        configurationMap.put("AllMenuList", this.getDefaultCacheConfiguration(globalSessionTimeout*10));
        configurationMap.put("Menus", this.getDefaultCacheConfiguration(globalSessionTimeout*10));
        configurationMap.put("NotButtonList", this.getDefaultCacheConfiguration(globalSessionTimeout*10));
        configurationMap.put("UserMenuList", this.getDefaultCacheConfiguration(globalSessionTimeout*10));
        return configurationMap;
    }
    
    /**
     * 獲取redis的緩存配置(針對於鍵)
     *
     * @param seconds 鍵過期時間
     * @return
     */
    private RedisCacheConfiguration getDefaultCacheConfiguration(long seconds) {
        Jackson2JsonRedisSerializer<Object> jackson2JsonRedisSerializer = new Jackson2JsonRedisSerializer<>(Object.class);
        ObjectMapper om = new ObjectMapper();
        om.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.ANY);
        om.enableDefaultTyping(ObjectMapper.DefaultTyping.NON_FINAL);
        jackson2JsonRedisSerializer.setObjectMapper(om);
        RedisCacheConfiguration redisCacheConfiguration = RedisCacheConfiguration.defaultCacheConfig();
        redisCacheConfiguration = redisCacheConfiguration.serializeValuesWith(
                RedisSerializationContext
                        .SerializationPair
                        .fromSerializer(jackson2JsonRedisSerializer)
        ).entryTtl(Duration.ofSeconds(seconds));
        return redisCacheConfiguration;
    }
    
    /**
     * 獲取Redis緩存配置,此處獲取的為默認配置
     * 如對鍵值序列化方式,是否緩存null值,是否使用前綴等有特殊要求
     * 可另行調用 RedisCacheConfiguration 的構造方法
     *
     * @return
     */
    private RedisCacheConfiguration getDefaultCacheConfiguration() {
        // 注意此構造函數為 spring-data-redis-2.1.9 及以上擁有,經試驗 已知spring-data-redis-2.0.9及以下版本沒有此構造函數
        // 但觀察源碼可得核心不過是在值序列化器(valueSerializationPair)的構造中注入 ClassLoader 即可
        return RedisCacheConfiguration.defaultCacheConfig(resourceLoader.getClassLoader());
    }
}

private RedisCacheConfiguration getDefaultCacheConfiguration(long seconds) {
       
        ObjectMapper om = new ObjectMapper();
        om.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.ANY);
        om.enableDefaultTyping(ObjectMapper.DefaultTyping.NON_FINAL);
        RedisCacheConfiguration redisCacheConfiguration = RedisCacheConfiguration.defaultCacheConfig();
        redisCacheConfiguration = redisCacheConfiguration.entryTtl(Duration.ofSeconds(seconds));
        return redisCacheConfiguration;
    }
/**
* redis默認存hex，這里不用序列化
**/