Spring + Ehcache Integration

A: Ehcache introduction

EhCache is a pure Java in-process caching framework, which is fast and capable, and is the default Cacheprovider in Hibernate.
Similar to making a backup of the database, be sure to note the data dirty read when using Ehcache

Second: The knowledge points that spring needs
1 Spring AOP application several ways: Proxyfactorybean dynamic agent, 2.0 version before;<aop> label 2.0 version
2 Spring Get access point information: Joinpoint and Proceedingjoinpoint (limited to surround notification use)

Three: Use

1 Ehcache configuration:

<?xml version= "1.0" encoding= "UTF-8"?>    <ehcache>      <diskstore path= "C:\\myapp\\cache"/>      <defaultcache          maxelementsinmemory= "1"          eternal= "false"           Timetoidleseconds= "          timetoliveseconds" = "          overflowtodisk" = "true"          />    <cache name= "System_cache"          maxelementsinmemory= "One"          eternal= " False "          timetoidleseconds=" 300000 "          timetoliveseconds=" 600000 "           Overflowtodisk= "true"          />  </ehcache>                    

2 Spring configuration file:

<?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:tx= "Http://www.springframework.org/schema/tx" xmlns:context= "Http://www.springframework.org/schema/context"XMLNS:AOP= "HTTP://WWW.SPRINGFRAMEWORK.ORG/SCHEMA/AOP" xmlns:jee= "Http://www.springframework.org/schema/jee"Xmlns:util= "Http://www.springframework.org/schema/util" xmlns:lang= "Http://www.springframework.org/schema/lang"XMLNS:JMS= "HTTP://WWW.SPRINGFRAMEWORK.ORG/SCHEMA/JMS" xmlns:security= "http://www.springframework.org/schema/security"Xmlns:dwr= "Http://www.directwebremoting.org/schema/spring-dwr"Xmlns:jdbc= "Http://www.springframework.org/schema/jdbc"xsi:schemalocation= "Http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd http//Www.springframework.org/schema/txhttp://www.springframework.org/schema/tx/spring-tx-3.0.xsdhttp//Www.springframework.org/schema/contexthttp://www.springframework.org/schema/context/spring-context-3.0.xsdhttp//WWW.SPRINGFRAMEWORK.ORG/SCHEMA/AOPhttp://www.springframework.org/schema/aop/spring-aop-3.0.xsdhttp//Www.springframework.org/schema/jeehttp://www.springframework.org/schema/jee/spring-jee-3.0.xsdhttp//Www.springframework.org/schema/utilhttp://www.springframework.org/schema/util/spring-util-3.0.xsdhttp//Www.springframework.org/schema/langhttp://www.springframework.org/schema/lang/spring-lang-3.0.xsdhttp//WWW.SPRINGFRAMEWORK.ORG/SCHEMA/JMShttp://www.springframework.org/schema/jms/spring-jms-3.0.xsdhttp//www.springframework.org/schema/securityhttp://www.springframework.org/schema/security/spring-security-3.0.xsdhttp//Www.directwebremoting.org/schema/spring-dwrhttp://www.directwebremoting.org/schema/spring-dwr-2.0.xsdhttp//Www.springframework.org/schema/jdbchttp://www.springframework.org/schema/jdbc/spring-jdbc-3.0.xsd"><!--activate annotation function--<context:annotation-config/> <!--on using @transactional annotations--<tx:an Notation-driven transaction-manager= "TransactionManager"Proxy-target-class= "true"/> <context:component-scan base- Package= "Ehcache.*"scoped-proxy= "Targetclass" > </context:component-scan> <!--DataSource--<bean id= "DataSource"class= "Com.mchange.v2.c3p0.ComboPooledDataSource"Destroy-method= "Close" > <property name= "driverclass" value= "Oracle.jdbc.driver.OracleDriver"/> <proper         Ty name= "Jdbcurl" value= "Jdbc:oracle:thin: @localhost: 1521/orcl"/> <property name= "user" value= "Oracle"/> <property name= "Password" value= "Oracle"/> <!--connection pool other configurations--<property name= "Minpools Ize "value=" 2 "/> <property name=" maxpoolsize "value=" 5 "/> <property name=" MaxIdleTime "value=" "/> <property name=" acquireincrement "value=" 3 "/> <property name=" maxstatements "value=" 10 " /> <property name= "initialpoolsize" value= "2"/> <property name= "Idleconnectiontestperiod" value = "/>" <property name= "Numhelperthreads" value= "ten"/> </bean> <bean id= "JdbcTemplate"class= "Org.springframework.jdbc.core.JdbcTemplate" > <property name= "dataSource" ref= "DataSource" ></ property> </bean> <bean id= "Cachedao"class= "Ehcache.integration.dao.CacheDao" > <property name= "jdbctemplate" ref= "JdbcTemplate"/> </bean> <bean id= "Cacheservice"class= "Ehcache.integration.service.CacheService" > <property name= "Cachedao" ref= "Cachedao"/> </bean> <!--reference Ehcache configuration--<bean id= "Defaultcachemanager"class= "Org.springframework.cache.ehcache.EhCacheManagerFactoryBean" > <property name= "configlocation" > <value>WebContent/resource/ehcache.xml</value> </property> </bean> <!--definition Ehcach E factory and set the cache name---<bean id= "EhCache" usedclass= "Org.springframework.cache.ehcache.EhCacheFactoryBean" > <property name= "CacheManager" > <ref Local= "Defaultcachemanager"/> </property> <property name= "CacheName" > <value& Gt System_cache</value> </property> </bean> <!--facets--<bean id= "Aspectclass"class= "Ehcache.integration.interceptor.MethodCacheInterceptor" > <property name= "Cache" > <ref loca L= "EhCache"/> </property> </bean> <aop:config proxy-target-class= "true" > <aop:aspect ref= "Aspectclass" > <aop:pointcut expression= "Execution (* ehcache.integratio n.service.*service.* (..)) " Id= "Servicepointcut"/> <aop:around method= "dointercept" pointcut-ref= "Servicepointcut"/> </aop:a Spect> </aop:config></beans>

3 facets and notification method definitions:

　　

 PackageEhcache.integration.interceptor;Importjava.io.Serializable;ImportNet.sf.ehcache.Cache;Importnet.sf.ehcache.Element;ImportOrg.aspectj.lang.ProceedingJoinPoint; Public classMethodcacheinterceptor {Privatecache Cache;  Public voidSetcache (Cache cache) { This. cache =Cache; }    /*** Intercept the Service/dao method and find out if the result exists, return the value in the cache if it exists, * Otherwise, return the database query result and put the query result in cache * 1) Joinpoint * java.lang.object[] Getargs (): Gets the parameter list of the connection point method runtime; * Signature getsignature (): Gets the method signature object of the connection point; * java. Lang.     Object Gettarget (): Gets the target object where the connection point is located; * Java.lang.Object getthis (): Gets the proxy object itself; * 2) Proceedingjoinpoint (only for surround notification) * Proceedingjoinpoint inherits the Joinpoint Subinterface, which adds two methods for executing the connection point method: * Java.lang.Object Proceed () throws Java.lang.Throwable: by reflection     Executes the method at the connection point of the target object; * Java.lang.Object proceed (java.lang.object[] args) throws Java.lang.Throwable: Perform the method at the target object connection point by reflection * @throwsThrowable*/     PublicObject dointercept (Proceedingjoinpoint joinpoint)throwsthrowable {String targetName=joinpoint.gettarget (). GetClass (). GetName (); String MethodName=joinpoint.getsignature (). GetName (); object[] Arguments=Joinpoint.getargs (); String CacheKey=Getcachekey (TargetName, methodName, arguments); Element element=Cache.get (CacheKey); Object result=NULL; if(element = =NULL) {result=joinpoint.proceed (); Element=NewElement (CacheKey, (Serializable) result);          Cache.put (Element); }        returnElement.getvalue (); }    /*** method to obtain the cache key, the cache key is the unique identifier of an element in the cache * Cache key includes package name + class name + method name, such as Com.co.cache.service.UserServiceIm Pl.getalluser*/    Privatestring Getcachekey (String targetName, String methodName, object[] arguments) {stringbuffer sb=NewStringBuffer (); Sb.append (TargetName). Append ("."). Append (MethodName); if((Arguments! =NULL) && (Arguments.length! = 0)) {             for(inti = 0; i < arguments.length; i++) {sb.append ("."). Append (Arguments[i]); }        }        returnsb.tostring (); }}

4 System Sevice Method:

 PackageEhcache.integration.service;Importjava.util.List;ImportSpring.tx.bean.TxdemoBean;ImportEhcache.integration.dao.CacheDao;/*** Class Description: Service Layer *@authorShiro *@version1.0 createdate:2015-2-2 * * @history: * @updateDate @updatePerson @declare **/ Public classCacheservice {PrivateCachedao Cachedao; /*** Method Description: **/     PublicList<txdemobean>getList () {List<TxdemoBean> rows =cachedao.selectlist (); returnrows; }    /**     * @returnThe Cachedao*/     PublicCachedao Getcachedao () {returnCachedao; }    /**     * @paramCachedao the Cachedao to set*/     Public voidSetcachedao (Cachedao Cachedao) { This. Cachedao =Cachedao; }}

5 Call Entry:

 Packageehcache.integration;Importjava.util.List;ImportOrg.springframework.context.ApplicationContext;ImportOrg.springframework.context.support.FileSystemXmlApplicationContext;ImportSpring.tx.bean.TxdemoBean;ImportEhcache.integration.service.CacheService;/*** Class Description: Ehcache integrated Spring *@authorShiro *@version1.0 createdate:2015-4-20 * * @updateDate * @updatePerson * @declare*/ Public classAcce { Public Static voidMain (string[] args) {ApplicationContext context=NewFilesystemxmlapplicationcontext ("Webcontent/resource/applicationcontext-ehcache.xml"); Cacheservice Cacheservice= (Cacheservice) context.getbean ("Cacheservice");//CacheManager CacheManager = (CacheManager) context.getbean ("CacheManager");////Cache Levelonecache = Cachemanager.getcache ("Syscache");         for(inti = 0; I < 5; i++) {List<TxdemoBean> rows =cacheservice.getlist ();  for(Txdemobean txdemobean:rows) {System.out.println (txdemobean.tostring ()); }        }    }}

Spring + ehcache Consolidation