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本篇文章為大家展示了Spring基于注解配置使用ehcache,內容簡明扼要并且容易理解,絕對能使你眼前一亮,通過這篇文章的詳細介紹希望你能有所收獲。
使用ehcache-spring-annotations使得在工程中簡單配置即可使用緩存
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/context http://www.springframework.org/schema/context/spring-context-3.0.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.0.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd http://www.springframework.org/schema/context http://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 id="ehCacheManager" class="org.springframework.cache.ehcache.EhCacheManagerFactoryBean"> <property name="configLocation" value="classpath:ehcache.xml"/> </bean> <bean id="sacheService" 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
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