Spring如何基于注解配置使用ehcache

使用ehcache-spring-annotations使得在工程中简单配置即可使用缓存

下载地址：http://code.google.com/p/ehcache-spring-annotations/

需要的jar包，首先需要的是我们之前做SpringMVC时的各个Spring的jar包

然后需要把ehcache-spring-annotations-1.2.0文件夹内lib内的，非spring的jar加进去，因为我们已经增加了我们版本的spring
然后还需要动态代理的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> 

配置缓存配置文件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是示例类，代码如下：

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("查询编号：" + code);
    return new Date().toLocaleString() + "-->" + code;
  }
  @SuppressWarnings("deprecation")
  @Transactional(propagation = Propagation.REQUIRED)
  public String update(String code){
    System.out.println("更新编号：" + code);
    return new Date().toLocaleString() + "-->" + code;
  }
  @TriggersRemove(cacheName="testCache",removeAll=true)
  public void flush(){
    System.out.println("情况缓存");
    System.out.println("Processing testFlushing");
  }
} 

改类包含根据参数获取缓存值，更新缓存，情况缓存，都是使用注解标签实现。

Action类需要改动一下，代码如下：

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;
  }
} 

根据key做不同的操作，然后分别访问以下几个路径，为了方便看效果和学习，我把工程代码放到了附件：

第一次没有缓存
http://localhost:8080/spring/hello.do?key=1&code=java
读取缓存
http://localhost:8080/spring/hello.do?key=1&code=java
更新缓存
http://localhost:8080/spring/hello.do?key=2&code=java
读取最新缓存
http://localhost:8080/spring/hello.do?key=1&code=java
情况缓存
http://localhost:8080/spring/hello.do?key=3

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持我们。