java启动项目添加ehcache缓存

短命女 2022-05-26 12:37 146阅读 0赞

1.web.xml配置监听器

<listener>  
        <listener-class>  
            cn.com.highset.goexpo.util.CacheListener
        </listener-class>  
    </listener>

2.重写ContextLoaderListener的contextInitialized方法

public class CacheListener extends ContextLoaderListener{
    	
        @Override  
        public void contextInitialized(ServletContextEvent event) {  
            super.contextInitialized(event);  
            ApplicationContext applicationContext = WebApplicationContextUtils.getWebApplicationContext(event.getServletContext());          
            //获取bean  
            IBaseDao baseDao = (IBaseDao) applicationContext.getBean("baseDao");  
            CacheManager cacheManager = (CacheManager) applicationContext.getBean("cacheManager");  
            Cache cache = cacheManager.getCache("cachePool"); 
            cache.put("key", "value");
        }
    }

3.配置ehcache.xml

<?xml version="1.0" encoding="UTF-8"?>
    <ehcache>
        <diskStore path="java.io.tmpdir" />
        <defaultCache maxElementsInMemory="500" eternal="false" timeToIdleSeconds="300" timeToLiveSeconds="1200"  overflowToDisk="true" />
        <cache name="cachePool" maxElementsInMemory="150" eternal="true" timeToLiveSeconds="0"  timeToIdleSeconds="0" overflowToDisk="false" />
    </ehcache>

4.配置spring缓存管理器

5.通过注解注入org.springframework.cache.CacheManager

@Autowired
    private CacheManager cacheManager;

6.查询cache缓存引用org.springframework.cache.Cache

Cache cache = cacheManager.getCache("cachePool");
    Object value = cache.get("key").get();