使用ehcache-spring-annotations使得在工程中簡單配置即可使用緩存

下載地址：http://code.google.com/p/ehcache-spring-annotations/

需要的jar包，首先需要的是我們之前做SpringMVC時的各個Spring的jar包

然后需要把ehcache-spring-annotations-1.2.0文件夾內lib內的，非spring的jar加進去，因為我們已經增加了我們版本的spring然后還需要動態代理的cglib包

在spring主配置文件中配置ehcache注解的使用：

<?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:mvc='http://www.springframework.org/schema/mvc' xmlns:p='http://www.springframework.org/schema/p' xmlns:context='http://www.springframework.org/schema/context' xmlns:aop='http://www.springframework.org/schema/aop' xmlns:tx='http://www.springframework.org/schema/tx' xmlns:ehcache='http://ehcache-spring-annotations.googlecode.com/svn/schema/ehcache-spring' xsi:schemaLocation='http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd http://www.springframework.org/schema/contexthttp://www.springframework.org/schema/context/spring-context-3.0.xsd http://www.springframework.org/schema/aophttp://www.springframework.org/schema/aop/spring-aop-3.0.xsd http://www.springframework.org/schema/txhttp://www.springframework.org/schema/tx/spring-tx-3.0.xsd http://www.springframework.org/schema/mvchttp://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd http://www.springframework.org/schema/contexthttp://www.springframework.org/schema/context/spring-context-3.0.xsd http://ehcache-spring-annotations.googlecode.com/svn/schema/ehcache-spring http://ehcache-spring-annotations.googlecode.com/svn/schema/ehcache-spring/ehcache-spring-1.1.xsd'> <ehcache:annotation-driven cache-manager='ehCacheManager' /> <bean class='org.springframework.cache.ehcache.EhCacheManagerFactoryBean'> <property name='configLocation' value='classpath:ehcache.xml'/> </bean> <bean class='test.CacheService'></bean> </beans>

配置緩存配置文件ehcache.xml，改文件放在SRC下：

<?xml version='1.0' encoding='UTF-8'?> <ehcache xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance' xsi:noNamespaceSchemaLocation='http://ehcache.org/ehcache.xsd' updateCheck='false'> <diskStore path='java.io.tmpdir' /> <defaultCache eternal='false' maxElementsInMemory='1000' overflowToDisk='false' diskPersistent='false' timeToIdleSeconds='0' timeToLiveSeconds='600' memoryStoreEvictionPolicy='LRU' /> <cache name='testCache' eternal='false' maxElementsInMemory='100' overflowToDisk='false' diskPersistent='false' timeToIdleSeconds='0' timeToLiveSeconds='300' memoryStoreEvictionPolicy='LRU' /> </ehcache>

CacheService是示例類，代碼如下：

package test; import java.util.Date; import org.springframework.transaction.annotation.Propagation; import org.springframework.transaction.annotation.Transactional; import com.googlecode.ehcache.annotations.Cacheable; import com.googlecode.ehcache.annotations.TriggersRemove; public class CacheService{ @SuppressWarnings('deprecation') @Cacheable(cacheName = 'testCache') public String getName(String code){ System.out.println('查詢編號：' + code); return new Date().toLocaleString() + '-->' + code; } @SuppressWarnings('deprecation') @Transactional(propagation = Propagation.REQUIRED) public String update(String code){ System.out.println('更新編號：' + code); return new Date().toLocaleString() + '-->' + code; } @TriggersRemove(cacheName='testCache',removeAll=true) public void flush(){ System.out.println('情況緩存'); System.out.println('Processing testFlushing'); } }

改類包含根據參數獲取緩存值，更新緩存，情況緩存，都是使用注解標簽實現。

Action類需要改動一下，代碼如下：

package test; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.web.bind.annotation.RequestMapping; // http://localhost:8080/spring/hello.do?key=1&code=java @org.springframework.stereotype.Controller public class HelloController{ private CacheService sacheService; @SuppressWarnings('deprecation') @RequestMapping('/hello.do') public String hello(HttpServletRequest request,HttpServletResponse response){ String key = request.getParameter('key'); if('1'.equals(key)){ request.setAttribute('message', sacheService.getName(request.getParameter('code'))); }else if('2'.equals(key)){ request.setAttribute('message', sacheService.update(request.getParameter('code'))); }else{ sacheService.flush(); request.setAttribute('message', sacheService.getName(request.getParameter('code'))); } return 'hello'; } public CacheService getSacheService() { return sacheService; } @Autowired public void setSacheService(CacheService sacheService) { this.sacheService = sacheService; } }

根據key做不同的操作，然后分別訪問以下幾個路徑，為了方便看效果和學習，我把工程代碼放到了附件：

第一次沒有緩存http://localhost:8080/spring/hello.do?key=1&code=java讀取緩存http://localhost:8080/spring/hello.do?key=1&code=java更新緩存http://localhost:8080/spring/hello.do?key=2&code=java讀取最新緩存http://localhost:8080/spring/hello.do?key=1&code=java情況緩存http://localhost:8080/spring/hello.do?key=3

以上就是本文的全部內容，希望對大家的學習有所幫助，也希望大家多多支持好吧啦網。