springMVC+mybais整合ehcache

1、pom文件引用：

<!--ehcache 相关包 --> <dependency> <groupId>net.sf.ehcache</groupId> <artifactId>ehcache</artifactId> <version>2.7.5</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-context-support</artifactId> <version>3.2.8.RELEASE</version> </dependency> 2、在resource目录配置applicationContext-ehcache.xml和ehcache.xml

applicationContext-ehcache.xml配置：

<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:aop="http://www.springframework.org/schema/aop" xmlns:c="http://www.springframework.org/schema/c" xmlns:cache="http://www.springframework.org/schema/cache" xmlns:context="http://www.springframework.org/schema/context" xmlns:jdbc="http://www.springframework.org/schema/jdbc" xmlns:jee="http://www.springframework.org/schema/jee" xmlns:lang="http://www.springframework.org/schema/lang" xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:p="http://www.springframework.org/schema/p" xmlns:task="http://www.springframework.org/schema/task" xmlns:tx="http://www.springframework.org/schema/tx" xmlns:util="http://www.springframework.org/schema/util" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd http://www.springframework.org/schema/cache http://www.springframework.org/schema/cache/spring-cache.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/jdbc http://www.springframework.org/schema/jdbc/spring-jdbc.xsd http://www.springframework.org/schema/jee http://www.springframework.org/schema/jee/spring-jee.xsd http://www.springframework.org/schema/lang http://www.springframework.org/schema/lang/spring-lang.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd http://www.springframework.org/schema/task http://www.springframework.org/schema/task/spring-task.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util.xsd"> <!-- 开启spring缓存 --> <bean id="ehCacheManager" class="org.springframework.cache.ehcache.EhCacheManagerFactoryBean"> <property name="configLocation" value="classpath:/ehcache.xml" /> <property name="shared" value="true" /> </bean> <bean id="cacheManager" class="org.springframework.cache.ehcache.EhCacheCacheManager"> <property name="cacheManager" ref="ehCacheManager" /> </bean> <cache:annotation-driven cache-manager="cacheManager" /> </beans> ehcache.xml代码：

<?xml version="1.0" encoding="UTF-8"?> <ehcache xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="http://ehcache.org/ehcache.xsd"> <diskStore path="${java.io.tmpdir}/${system.project_name}/cache" /> <cache name="userCache" maxElementsInMemory="500" timeToIdleSeconds="36000" timeToLiveSeconds="86400" eternal="false" overflowToDisk="false" /> <!-- name：Cache的唯一标识 maxElementsInMemory：内存中最大缓存对象数 maxElementsOnDisk：磁盘中最大缓存对象数，若是0表示无穷大 eternal：Element是否永久有效，一但设置了，timeout将不起作用 overflowToDisk：配置此属性，当内存中Element数量达到maxElementsInMemory时，Ehcache将会Element写到磁盘中 timeToIdleSeconds：设置Element在失效前的允许闲置时间。仅当element不是永久有效时使用，可选属性，默认值是0，也就是可闲置时间无穷大 timeToLiveSeconds：设置Element在失效前允许存活时间。最大时间介于创建时间和失效时间之间。仅当element不是永久有效时使用，默认是0.，也就是element存活时间无穷大 diskPersistent：是否缓存虚拟机重启期数据 diskExpiryThreadIntervalSeconds：磁盘失效线程运行时间间隔，默认是120秒 diskSpoolBufferSizeMB：这个参数设置DiskStore（磁盘缓存）的缓存区大小。默认是30MB。每个Cache都应该有自己的一个缓冲区 memoryStoreEvictionPolicy：当达到maxElementsInMemory限制时，Ehcache将会根据指定的策略去清理内存。默认策略是LRU（最近最少使用）。你可以设置为FIFO（先进先出） 　　 或是LFU（较少使用） --> </ehcache> 3、web.xml配置：

<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd" version="3.1" metadata-complete="true"> <!-- 修改servlet版本为3.1 --> <!-- 配置DispatcherServlet --> <servlet> <servlet-name>niming</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <!-- 配置springMVC需要加载的配置文件 spring-dao.xml,spring-service.xml,spring-web.xml Mybatis - > spring -> springmvc --> <init-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:spring/spring-*.xml; classpath:applicationContext-ehcache.xml</param-value> </init-param> </servlet> <servlet-mapping> <servlet-name>niming</servlet-name> <!-- 默认匹配所有的请求 --> <url-pattern>/</url-pattern> </servlet-mapping> </web-app> 4、使用案例：

package com.niming.service.impl; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Service; import com.niming.dao.UserDao; import com.niming.entity.User; import com.niming.service.UserService; import net.sf.ehcache.CacheManager; import net.sf.ehcache.Ehcache; import net.sf.ehcache.Element; @Service public class UserServiceImpl implements UserService { @Autowired private UserDao userDao; private static final CacheManager cacheManager = CacheManager.create(); public void insertUser(User user) { userDao.insertUser(user); } public User queryUserById(String openid){ User user = null; String key = "user/"+openid; Ehcache cache = cacheManager.getEhcache("userCache"); Element element = cache.get(key); if(element!=null){ user = (User)element.getObjectValue(); }else{ user = userDao.queryUserById(openid); cache.put(new Element(key, user)); } return user; } }