spring缓存ehcache使用

妖狐艹你老母 2023-07-25 09:47 14阅读 0赞

spring-mvc.xml

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ehcache-local.xml

<?xml version="1.0" encoding="UTF-8"?>
    <ehcache updateCheck="false" name="defaultCache">
    
    	<diskStore path="../temp/hzinfo/ehcache" />
    
    	
    	<defaultCache maxEntriesLocalHeap="100" eternal="false"
    		timeToIdleSeconds="300" timeToLiveSeconds="0" overflowToDisk="true"
    		maxEntriesLocalDisk="100000" />
    
    	
    	<cache name="LineType" maxEntriesLocalHeap="100" eternal="true"
    		   overflowToDisk="true" />
    
    	
    	<cache name="IndustryType" maxEntriesLocalHeap="100" eternal="true"
    		   overflowToDisk="true" />
    
    	
    	<cache name="DeviceTreeCache" maxEntriesLocalHeap="100" eternal="true"
    		   overflowToDisk="true" />
    
    </ehcache>

代码中运用@Cache注解

@Override
        @Cacheable(value = "DeviceTreeCache", key = "'deviceCache-'+#stationId")
        public List selectEquList(String stationId) {
        	if (null == stationId || stationId.isEmpty()) {
    			stationId = Constants.defaultStationId;
    		}
           return genTree(stationId);
        }
    
        @Override
        @CachePut(value = "DeviceTreeCache", key = "'deviceCache-'+#stationId")
        public List updEquList(String stationId) {
        	if (null == stationId || stationId.isEmpty()) {
    			stationId = Constants.defaultStationId;
    		}
           return genTree(stationId);
        }

CacheUtils工具类

import com.hnac.hzinfo.common.utils.SpringContextHolder;
    
    import net.sf.ehcache.Cache;
    import net.sf.ehcache.CacheManager;
    import net.sf.ehcache.Element;
    
    public class CacheUtils {
    
        private static CacheManager cacheManager = ((CacheManager)SpringContextHolder.getBean("cache"));
    
        /**
         * 获取缓存
         * @param cacheName
         * @param key
         * @return
         */
        public static Object get(String cacheName, Object key) {
            Element element = getCache(cacheName).get(key);
            return element==null?null:element.getObjectValue();
        }
    
        /**
         * 写入缓存
         * @param cacheName
         * @param key
         * @param value
         */
        public static void put(String cacheName, Object key, Object value) {
            Element element = new Element(key, value);
            getCache(cacheName).put(element);
        }
    
        /**
         * 从缓存中移除
         * @param cacheName
         * @param key
         */
        public static void remove(String cacheName, Object key) {
            getCache(cacheName).remove(key);
        }
    
        /**
         * 获得一个Cache，没有则创建一个。
         * @param cacheName
         * @return
         */
        private static Cache getCache(String cacheName){
            Cache cache = cacheManager.getCache(cacheName);
            if (cache == null){
                cacheManager.addCache(cacheName);
                cache = cacheManager.getCache(cacheName);
                cache.getCacheConfiguration().setEternal(true);
            }
            return cache;
        }
    
        public static CacheManager getCacheManager() {
            return cacheManager;
        }
    
    }

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