企業級框架____Ehcache快取框架(Ehcache和Spring的整合)
阿新 • • 發佈：2019-02-15
//======整合結構圖
//==建立專案新增spring依賴和Rhcache的jar包
jdbc的資料來源jar包 這是spring啟動必備的一個
ehcache.包和它依賴的包sf4j
Ehcache的結構
//==配置spring的applicationContext.xml配置檔案
<?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.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.1.xsd http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.1.xsd http://www.springframework.org/schema/cache http://www.springframework.org/schema/cache/spring-cache-3.1.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.1.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.1.xsd"> <!-- springconfigStart --> <!-- 使用註解的方式裝配置bean --> <context:annotation-config /> <context:component-scan base-package="com.frame"></context:component-scan> <!-- 配置dbcp資料來源 --> <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> <!-- 開啟spring的快取註解 --> <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檔案
//配置ehcache.xml檔案#log4j輸出選項 #log4j.rootLogger=info,stdout,file log4j.rootLogger=info,file #輸出到控制檯 #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 #寫入到根目錄 log4j.appender.file=org.apache.log4j.DailyRollingFileAppender log4j.appender.file.file=${logpath}/logs/log_info.log log4j.appender.file.encoding=UTF-8 log4j.appender.file.DatePattern='.'yyyy-MM-dd log4j.appender.file.layout=org.apache.log4j.PatternLayout log4j.appender.file.layout.ConversionPattern=[%-5p] %d{yyyy-MM-dd HH\:mm\:ss,SSS}_%t method\:%l%n%m%n
<?xml version="1.0" encoding="UTF-8"?> <ehcache> <!-- 指定一個檔案目錄，當EhCache把資料寫到硬碟上時，將把資料寫到這個檔案目錄下 --> <diskStore path="java.io.tmpdir"/> <!-- 設定快取的預設資料過期策略 --> <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實體類
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;
// Fields
private 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 accessors
public 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;
}
}package com.frame.student.dao;
import com.frame.student.bean.Student;
public interface StudentDao {
/**
* 測試下ehcache的快取機制
* @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;
@Repository
public class StudentDaoImpl implements StudentDao{
//或者模擬假資料
@Cacheable(value = "simpleCache", key = "#stuid")
@Override
public Student testEcache(String stuid) {
System.out.println("開始訪問資料庫");
Student sdf=new Student();
sdf.setStuid(stuid);
return sdf;
}
}
//ehcache簡單使用
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物件
CacheManager cacheManager = new CacheManager();
//載入自定義cache物件
Cache cache = cacheManager.getCache("simpleCache");
//把集合放入快取 存放鍵值對集合類似map
cache.put(new Element("user", "zhangsan"));
//取出集合根據key獲取值
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());
//獲取快取中的原素個數
System.out.println("集合個數:"+cache.getSize());
//移除cache某個值
cache.remove("user");
System.out.println("集合個數:"+cache.getSize());
// 關閉當前CacheManager物件
cacheManager.shutdown();
}
}
//測試註解型快取機制
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 {
@Resource
private StudentDao dao;
@Test
public void getUserbyId() throws Exception{
String stuid="10086";
System.out.println("ehcache.xml配置的超時時間為10秒");
System.out.println("第一次呼叫:"+dao.testEcache(stuid).getStuid());
Thread.sleep(2000);
System.out.println("2秒後呼叫:"+dao.testEcache(stuid).getStuid());
Thread.sleep(9000);
System.out.println("9秒後呼叫:"+dao.testEcache(stuid).getStuid());
Thread.sleep(11000);
System.out.println("11秒後呼叫:"+dao.testEcache(stuid).getStuid());
}
}
//原始碼: http://pan.baidu.com/s/1pLuQre7