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Spring如何基于注解配置使用ehcache

更新時(shí)間：2020年10月31日 10:01:08 作者：cuisuqiang

這篇文章主要介紹了Spring如何基于注解配置使用ehcache,文中通過(guò)示例代碼介紹的非常詳細(xì)，對(duì)大家的學(xué)習(xí)或者工作具有一定的參考學(xué)習(xí)價(jià)值,需要的朋友可以參考下

使用ehcache-spring-annotations使得在工程中簡(jiǎn)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(shí)的各個(gè)Spring的jar包

然后需要把ehcache-spring-annotations-1.2.0文件夾內(nèi)lib內(nèi)的，非spring的jar加進(jìn)去，因?yàn)槲覀円呀?jīng)增加了我們版本的spring
然后還需要?jiǎng)討B(tài)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(hào)：" + code); 
    return new Date().toLocaleString() + "-->" + code; 
  } 
  @SuppressWarnings("deprecation") 
  @Transactional(propagation = Propagation.REQUIRED)  
  public String update(String code){ 
    System.out.println("更新編號(hào)：" + 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(jù)參數(shù)獲取緩存值，更新緩存，情況緩存，都是使用注解標(biāo)簽實(shí)現(xiàn)。

Action類需要改動(dòng)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(jù)key做不同的操作，然后分別訪問(wèn)以下幾個(gè)路徑，為了方便看效果和學(xué)習(xí)，我把工程代碼放到了附件：

第一次沒(méi)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?jī)?nèi)容，希望對(duì)大家的學(xué)習(xí)有所幫助，也希望大家多多支持腳本之家。

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