Spring+Ehcache

源码地址：https://github.com/dragonwarrior01/test01.git

POM.xml

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"><modelVersion>4.0.0</modelVersion><parent><groupId>com.citi.learn</groupId><artifactId>learn</artifactId><version>0.0.1-SNAPSHOT</version></parent><artifactId>learn-ehcache</artifactId><packaging>war</packaging><name>learn-ehcache</name><description>learn-ehcache</description><properties><org.springframework.version>3.2.3.RELEASE</org.springframework.version><org.hibernate.version>4.2.0.Final</org.hibernate.version><tiles.version>3.0.4</tiles.version></properties><dependencies><!-- logger --><dependency><groupId>org.slf4j</groupId><artifactId>slf4j-log4j12</artifactId><version>1.6.1</version></dependency><dependency><groupId>log4j</groupId><artifactId>log4j</artifactId><version>1.2.16</version></dependency><!-- Spring --><dependency><groupId>org.springframework</groupId><artifactId>spring-core</artifactId><version>${org.springframework.version}</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-context</artifactId><version>${org.springframework.version}</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-context-support</artifactId><version>${org.springframework.version}</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-web</artifactId><version>${org.springframework.version}</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-orm</artifactId><version>${org.springframework.version}</version></dependency><!-- ehcache --><dependency><groupId>net.sf.ehcache</groupId><artifactId>ehcache</artifactId><version>2.8.3</version></dependency><!-- springMVC --><dependency><groupId>org.springframework</groupId><artifactId>spring-webmvc</artifactId><version>${org.springframework.version}</version></dependency><!-- Oracle Driver --><dependency><groupId>com.oracle</groupId><artifactId>ojdbc6</artifactId><version>11g</version></dependency><dependency><groupId>com.oracle</groupId><artifactId>ucp</artifactId><version>11g</version></dependency><!-- JPA --><dependency><groupId>org.springframework.data</groupId><artifactId>spring-data-jpa</artifactId><version>1.5.2.RELEASE</version></dependency><!-- <dependency> <groupId>javax.persistence</groupId> <artifactId>persistence-api</artifactId> <version>1.0.2</version> </dependency> --><!-- hibernate --><dependency><groupId>org.hibernate.javax.persistence</groupId><artifactId>hibernate-jpa-2.0-api</artifactId><version>1.0.1.Final</version></dependency><dependency><groupId>org.hibernate</groupId><artifactId>hibernate-entitymanager</artifactId><version>${org.hibernate.version}</version><scope>compile</scope></dependency><dependency><groupId>org.hibernate</groupId><artifactId>hibernate-core</artifactId><version>${org.hibernate.version}</version><scope>compile</scope></dependency><dependency><groupId>org.hibernate</groupId><artifactId>hibernate-ehcache</artifactId><version>${org.hibernate.version}</version><scope>compile</scope></dependency></dependencies></project>

一.配置ehcache.xml

  <!-- 缺省缓存配置。CacheManager 会把这些配置应用到程序中。 下列属性是 defaultCache 必须的：     maxInMemory -设定内存中创建对象的最大值。 eternal - 设置元素（译注：内存中对象）是否永久驻留。如果是，将忽略超 时限制且元素永不消亡。timeToIdleSeconds - 设置某个元素消亡前的停顿时间。也就是在一个元素消亡之前，两次访问时间的最大时间间隔值。 这只能在元素不是永久驻留时有效（译注：如果对象永恒不灭，则设置该属性也无用）。如果该值是 0 就意味着元素可以停顿无穷长的时间。 timeToLiveSeconds - 为元素设置消亡前的生存时间。 也就是一个元素从构建到消亡的最大时间间隔值。这只能在元素不是永久驻留时有效。 overflowToDisk - 设置当内存中缓存达到 maxInMemory 限制时元素是否可写到磁盘上。 --><ehcache><diskStore path="c:\\ehcache\\learn-ehcache" /><defaultCache maxElementsInMemory="1" eternal="false"timeToIdleSeconds="120" timeToLiveSeconds="120" overflowToDisk="true" /><cache name="org.test.cache.METHOD_CACHE" maxElementsInMemory="10000" eternal="false"timeToIdleSeconds="300000" timeToLiveSeconds="600000" overflowToDisk="true" /></ehcache>

二、配置spring 文件spring_commons.xml

<?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:context="http://www.springframework.org/schema/context"xmlns:mongo="http://www.springframework.org/schema/data/mongo"xmlns:tx="http://www.springframework.org/schema/tx"xsi:schemaLocation="http://www.springframework.org/schema/context          http://www.springframework.org/schema/context/spring-context-3.0.xsd          http://www.springframework.org/schema/data/mongo          http://www.springframework.org/schema/data/mongo/spring-mongo-1.0.xsd          http://www.springframework.org/schema/tx           http://www.springframework.org/schema/tx/spring-tx.xsd          http://www.springframework.org/schema/beans          http://www.springframework.org/schema/beans/spring-beans.xsd"><!-- 注解支持 --><context:annotation-config /><!-- 启动组件扫描，排除@Controller组件，该组件由SpringMVC配置文件扫描 --><context:component-scan base-package="com.springMVC.test"><context:exclude-filter type="annotation"expression="org.springframework.stereotype.Controller" /></context:component-scan><!-- 配置DataSource数据源 --><bean id="dataSource"class="org.springframework.jdbc.datasource.DriverManagerDataSource"><property name="driverClassName" value="oracle.jdbc.driver.OracleDriver" /><property name="url"value="jdbc:oracle:thin:@rcot1.aspac.citicorp.com:5201/a3cotr" /><property name="username" value="RCOTRPR1" /><property name="password" value="RCOTRPR1" /></bean><!-- 配置实体管理对象 p:persistenceUnitManager-ref="persistenceUnitManager" --><bean id="entityManagerFactory"class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean"><!-- <property name="persistenceXmlLocation" value="classpath:persistence.xml" /> --><property name="dataSource" ref="dataSource" /><property name="packagesToScan" value="com.springMVC.test.domains" /><!-- 选配属性 --><property name="jpaVendorAdapter"><bean class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter"><property name="databasePlatform" value="${hibernate.dialect}" /><property name="showSql" value="true" /><property name="generateDdl" value="false" /></bean></property><property name="jpaProperties"><props><!--<prop key="hibernate.hbm2ddl.auto">create-drop</prop> --><!--<prop key="hibernate.dialect">org.hibernate.dialect.H2Dialect</prop> --><prop key="hibernate.hbm2ddl.auto">update</prop><prop key="hibernate.dialect">org.hibernate.dialect.OracleDialect</prop></props></property></bean><bean id="txManager" class="org.springframework.orm.jpa.JpaTransactionManager"><property name="entityManagerFactory" ref="entityManagerFactory" /></bean><!-- 注解式事务 --><tx:annotation-driven transaction-manager="txManager" /><!-- cache manager --><bean id="cacheManager"class="org.springframework.cache.ehcache.EhCacheManagerFactoryBean"><property name="configLocation"><value>classpath:ehcache.xml</value></property></bean><bean id="methodCache" class="org.springframework.cache.ehcache.EhCacheFactoryBean"><property name="cacheManager" ref="cacheManager" /><property name="cacheName" value="org.test.cache.METHOD_CACHE" /></bean><span style="color:#ff0000;"><!-- customize intercepter begin --><!-- generate cache intercepter --><bean id="methodCacheInterceptor" class="com.ehcache.test.intercepter.MethodCacheInterceptor"><property name="cache" ref="methodCache" /></bean><!-- remove cache intercepter --><bean id="methodCacheAfterAdvice" class="com.ehcache.test.intercepter.MethodCacheAfterAdvice"><property name="cache" ref="methodCache" /></bean><!-- customize intercepter end --><bean id="methodCachePointCut"class="org.springframework.aop.support.RegexpMethodPointcutAdvisor"><property name="advice" ref="methodCacheInterceptor" /><property name="patterns"><list><value>.*find.*</value><value>.*get.*</value></list></property></bean><bean id="methodCacheAdvicePointCut"class="org.springframework.aop.support.RegexpMethodPointcutAdvisor"><property name="advice" ref="methodCacheAfterAdvice" /><property name="patterns"><list><value>.*update.*</value><value>.*save.*</value><value>.*del.*</value></list></property></bean></span></beans>

三、配置bean工厂，引用自定义拦截器methodCachePointCut、methodCacheAdvicePointCut

<?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:context="http://www.springframework.org/schema/context"xmlns:mongo="http://www.springframework.org/schema/data/mongo"xsi:schemaLocation="http://www.springframework.org/schema/context          http://www.springframework.org/schema/context/spring-context-3.0.xsd          http://www.springframework.org/schema/data/mongo          http://www.springframework.org/schema/data/mongo/spring-mongo-1.0.xsd          http://www.springframework.org/schema/beans          http://www.springframework.org/schema/beans/spring-beans-3.0.xsd"><import resource="spring_commons.xml" /><bean id="userServiceImp" class="com.ehcache.test.inf.impl.UserServiceImp" /><bean id="userService" class="org.springframework.aop.framework.ProxyFactoryBean"><!-- 代理接口 --><property name="proxyInterfaces" value="com.ehcache.test.inf.UserService" /><!-- 目标实现类 --><property name="target" ref="userServiceImp" /><!-- 拦截器 --><property name="interceptorNames"><list><value>methodCachePointCut</value><value>methodCacheAdvicePointCut</value></list></property></bean></beans>

四、自定义拦截器

MethodCacheInterceptor.java

package com.ehcache.test.intercepter;import java.io.Serializable;import net.sf.ehcache.Cache;import net.sf.ehcache.Element;import org.aopalliance.intercept.MethodInterceptor;import org.aopalliance.intercept.MethodInvocation;import org.slf4j.Logger;import org.slf4j.LoggerFactory;import org.springframework.beans.factory.InitializingBean;import org.springframework.util.Assert;public class MethodCacheInterceptor implements MethodInterceptor,InitializingBean {private static final Logger logger = LoggerFactory.getLogger(MethodCacheInterceptor.class);private transient Cache cache;public void setCache(Cache cache) {this.cache = cache;}public MethodCacheInterceptor() {super();}/** * 拦截Service/DAO 的方法，并查找该结果是否存在，如果存在就返回cache 中的值， 否则，返回数据库查询结果，并将查询结果放入cache */public Object invoke(MethodInvocation invocation) throws Throwable {String targetName = invocation.getThis().getClass().getName();String methodName = invocation.getMethod().getName();Object[] arguments = invocation.getArguments();Object result;logger.info("Find object from cache is " + cache.getName());String cacheKey = getCacheKey(targetName, methodName, arguments);Element element = cache.get(cacheKey);if (element == null) {logger.info("Hold up method , Get method result and create cache........!");result = invocation.proceed();element = new Element(cacheKey, (Serializable) result);cache.put(element);}return element.getValue();}/** * 获得cache key 的方法，cache key 是Cache 中一个Element 的唯一标识 cache key * 包括包名+类名+方法名，如com.co.cache.service.UserServiceImpl.getAllUser */private String getCacheKey(String targetName, String methodName,Object[] arguments) {StringBuffer sb = new StringBuffer();sb.append(targetName).append(".").append(methodName);if ((arguments != null) && (arguments.length != 0)) {for (int i = 0; i < arguments.length; i++) {sb.append(".").append(arguments[i]);}}return sb.toString();}/** * implement InitializingBean，检查cache 是否为空 */public void afterPropertiesSet() throws Exception {Assert.notNull(cache,"Need a cache. Please use setCache(Cache) create it.");}}

MethodCacheAfterAdvice.java

package com.ehcache.test.intercepter;import java.lang.reflect.Method;import java.util.List;import net.sf.ehcache.Cache;import org.slf4j.Logger;import org.slf4j.LoggerFactory;import org.springframework.aop.AfterReturningAdvice;import org.springframework.beans.factory.InitializingBean;import org.springframework.util.Assert;public class MethodCacheAfterAdvice implements AfterReturningAdvice,InitializingBean {private static final Logger logger = LoggerFactory.getLogger(MethodCacheAfterAdvice.class);private transient Cache cache;public void setCache(Cache cache) {this.cache = cache;}public MethodCacheAfterAdvice() {super();}public void afterReturning(Object arg0, Method arg1, Object[] arg2,Object arg3) throws Throwable {String className = arg3.getClass().getName();List list = cache.getKeys();for (int i = 0; i < list.size(); i++) {String cacheKey = String.valueOf(list.get(i));if (cacheKey.startsWith(className)) {cache.remove(cacheKey);logger.info("remove cache " + cacheKey);}}}public void afterPropertiesSet() throws Exception {Assert.notNull(cache,"Need a cache. Please use setCache(Cache) create it.");}}

测试

UserService

package com.ehcache.test.inf;public interface UserService {public void printUser(String userName);public String getUser(String userId);public String findUser(String userId);public void updateUser(String user);public void delUser(String userId);}

接口实现类UserServiceImp

package com.ehcache.test.inf.impl;import com.ehcache.test.inf.UserService;public class UserServiceImp implements UserService {@Overridepublic void printUser(String userName) {// TODO Auto-generated method stubSystem.out.println("printUser user:" + userName);// 显示user}@Overridepublic String findUser(String userId) {// TODO Auto-generated method stubreturn userId + "-- result";}@Overridepublic void updateUser(String user) {// TODO Auto-generated method stubSystem.out.println("updateUser:" + user);}@Overridepublic void delUser(String userId) {// TODO Auto-generated method stubSystem.out.println("delete user:" + userId);}@Overridepublic String getUser(String userId) {// TODO Auto-generated method stubreturn userId + "--result";}}

测试类

package com.ehcache.test;import org.springframework.context.ApplicationContext;import org.springframework.context.support.ClassPathXmlApplicationContext;import com.ehcache.test.inf.UserService;public class TestEhcache {/** * @param args */public static void main(String[] args) {// TODO Auto-generated method stubApplicationContext ctx = new ClassPathXmlApplicationContext("classpath:spring_beans.xml");UserService us = (UserService) ctx.getBean("userService");System.out.println("1--第一次查找并创建cache");us.getUser("zhangsan");System.out.println("2--在cache中查找");us.getUser("zhangsan");System.out.println("3--remove cache");us.updateUser("zhangsan");System.out.println("4--需要重新查找并创建cache");us.getUser("zhangsan");}}