企业级框架____Ehcache缓存框架(Ehcache和Spring的整合)

//======整合结构图

//==创建项目添加spring依赖和Rhcache的jar包

jdbc的数据源jar包 这是spring启动必备的一个

ehcache.包和它依赖的包sf4j

Ehcache的结构

//==配置spring的applicationContext.xml配置文件

<?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:p="http://www.springframework.org/schema/p"xmlns:aop="http://www.springframework.org/schema/aop"xmlns:context="http://www.springframework.org/schema/context"xmlns:mvc="http://www.springframework.org/schema/mvc"xmlns:tx="http://www.springframework.org/schema/tx"xmlns:c="http://www.springframework.org/schema/c"xmlns:cache="http://www.springframework.org/schema/cache"xsi:schemaLocation="http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.1.xsdhttp://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.1.xsdhttp://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.1.xsdhttp://www.springframework.org/schema/cache http://www.springframework.org/schema/cache/spring-cache-3.1.xsdhttp://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.1.xsdhttp://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.1.xsd"><!-- springconfigStart --><!-- 使用注解的方式装配置bean --><context:annotation-config /><context:component-scan base-package="com.frame"></context:component-scan><!-- 配置dbcp数据源  --><bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource"><property name="driverClassName" value="oracle.jdbc.driver.OracleDriver" /><property name="url" value="jdbc:oracle:thin:@127.0.0.1:1521:orcl" /><property name="username" value="oracle" /><property name="password" value="123456" /></bean><!-- 开启spring的缓存注解   -->    <bean id="ehcache" class="org.springframework.cache.ehcache.EhCacheManagerFactoryBean">          <property name="configLocation" value="classpath:ehcache.xml"></property>      </bean>  <bean id="cacheManager" class="org.springframework.cache.ehcache.EhCacheCacheManager">          <property name="cacheManager" ref="ehcache"></property>      </bean>  <cache:annotation-driven cache-manager="cacheManager" /><!-- springconfigEnd  --></beans>

配置jdbc文件

#log4j输出选项#log4j.rootLogger=info,stdout,filelog4j.rootLogger=info,file#输出到控制台#log4j.appender.stdout=org.apache.log4j.ConsoleAppender#log4j.appender.stdout.ImmediateFlush=true   #log4j.appender.stdout.layout=org.apache.log4j.PatternLayout   #log4j.appender.stdout.layout.ConversionPattern=-----------------------------------------------------------------------------------%nLevel:[%p]%nTime:[%d]%nClass:[%c]%nMessage:[%m]%n#写入到根目录log4j.appender.file=org.apache.log4j.DailyRollingFileAppenderlog4j.appender.file.file=${logpath}/logs/log_info.loglog4j.appender.file.encoding=UTF-8log4j.appender.file.DatePattern='.'yyyy-MM-ddlog4j.appender.file.layout=org.apache.log4j.PatternLayoutlog4j.appender.file.layout.ConversionPattern=[%-5p] %d{yyyy-MM-dd HH\:mm\:ss,SSS}_%t method\:%l%n%m%n

//配置ehcache.xml文件

<?xml version="1.0" encoding="UTF-8"?><ehcache>   <!-- 指定一个文件目录，当EhCache把数据写到硬盘上时，将把数据写到这个文件目录下 -->    <diskStore path="java.io.tmpdir"/>    <!-- 设定缓存的默认数据过期策略 -->    <defaultCache            maxElementsInMemory="10000"             eternal="false"             overflowToDisk="true"            timeToIdleSeconds="10"            timeToLiveSeconds="20"            diskPersistent="false"            diskExpiryThreadIntervalSeconds="120"/>    <cache name="simpleCache"        maxElementsInMemory="1000"        eternal="false"        overflowToDisk="true"        timeToIdleSeconds="10"        timeToLiveSeconds="20"/>  </ehcache>

//配置student实体类

package com.frame.student.bean;/** * Student entity. @author MyEclipse Persistence Tools */public class Student implements java.io.Serializable {/** * SRRID */private static final long serialVersionUID = -5076741984769526094L;// Fieldsprivate String stuid;private String stuname;private String stupwd;private String createtime;// Constructors/** default constructor */public Student() {}/** minimal constructor */public Student(String stuid) {this.stuid = stuid;}/** full constructor */public Student(String stuid, String stuname, String stupwd,String createtime) {this.stuid = stuid;this.stuname = stuname;this.stupwd = stupwd;this.createtime = createtime;}// Property accessorspublic String getStuid() {return this.stuid;}public void setStuid(String stuid) {this.stuid = stuid;}public String getStuname() {return this.stuname;}public void setStuname(String stuname) {this.stuname = stuname;}public String getStupwd() {return this.stupwd;}public void setStupwd(String stupwd) {this.stupwd = stupwd;}public String getCreatetime() {return this.createtime;}public void setCreatetime(String createtime) {this.createtime = createtime;}}

//配置dao和实现类

package com.frame.student.dao;import com.frame.student.bean.Student;public interface StudentDao {/** * 测试下ehcache的缓存机制 * @param param * @return */public Student testEcache(String stuid);}

package com.frame.student.dao;import org.springframework.cache.annotation.Cacheable;import org.springframework.stereotype.Repository;import com.frame.student.bean.Student;@Repositorypublic class StudentDaoImpl implements StudentDao{//或者模拟假数据@Cacheable(value = "simpleCache", key = "#stuid")@Overridepublic Student testEcache(String stuid) {System.out.println("开始访问数据库");Student sdf=new Student();sdf.setStuid(stuid);return sdf;}}

//ehcache简单使用

package com.frame.base.ehcache;import net.sf.ehcache.Cache;import net.sf.ehcache.CacheManager;import net.sf.ehcache.Element;public class TestCache {public static void main(String[] args) throws Exception {//初始化Ehcahce对象CacheManager cacheManager = new CacheManager();//加载自定义cache对象Cache cache = cacheManager.getCache("simpleCache");//把集合放入缓存  存放键值对集合类似mapcache.put(new Element("user", "zhangsan"));//取出集合根据key获取值System.out.println("key=user value=:"+cache.get("user").getObjectValue());//更新集合的key=user的值cache.put(new Element("user", "lisi"));System.out.println("key=user value=:"+cache.get("user").getObjectValue());//获取缓存中的原素个数System.out.println("集合个数:"+cache.getSize());//移除cache某个值cache.remove("user");System.out.println("集合个数:"+cache.getSize());// 关闭当前CacheManager对象cacheManager.shutdown();}}

//测试注解型缓存机制

package com.frame.student.test;import javax.annotation.Resource;import org.junit.Test;import org.junit.runner.RunWith;import org.springframework.test.context.ContextConfiguration;import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;import com.frame.student.dao.StudentDao;@RunWith(SpringJUnit4ClassRunner.class)@ContextConfiguration(locations={"classpath:applicationContext.xml"})public class StudentTest {@Resourceprivate StudentDao dao;@Testpublic void getUserbyId() throws Exception{String stuid="10086";System.out.println("ehcache.xml配置的超时时间为10秒");System.out.println("第一次调用:"+dao.testEcache(stuid).getStuid());Thread.sleep(2000);System.out.println("2秒后调用:"+dao.testEcache(stuid).getStuid());Thread.sleep(9000);System.out.println("9秒后调用:"+dao.testEcache(stuid).getStuid());Thread.sleep(11000);System.out.println("11秒后调用:"+dao.testEcache(stuid).getStuid());}}

//源码: http://pan.baidu.com/s/1pLuQre7