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发表于 2014-05-13 13:31 |只看该作者 |倒序浏览

本帖最后由玫瑰情书于 2014-05-15 13:53 编辑

spring整合ehcache缓存不了数据，求助！

这个是我的ehcache.xml配置文件

<?xml version="1.0" encoding="UTF-8"?>
<ehcache xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:noNamespaceSchemaLocation="ehcache.xsd" updateCheck="true"
monitoring="autodetect">
<diskStore path="d:\\temp\\cache"/>
<defaultCache
maxElementsInMemory="10000"
eternal="false"
timeToIdleSeconds="120"
timeToLiveSeconds="120"
overflowToDisk="true"
maxElementsOnDisk="10000000"
diskPersistent="false"
diskExpiryThreadIntervalSeconds="120"
memoryStoreEvictionPolicy="LRU"
/>
<cache name="demoCache"
maxElementsInMemory="10000"
maxElementsOnDisk="1000"
eternal="false"
overflowToDisk="true"
diskSpoolBufferSizeMB="20"
timeToIdleSeconds="300"
timeToLiveSeconds="600"
memoryStoreEvictionPolicy="LFU"
/>
</ehcache>

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spring配置文件

<?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:aop="http://www.springframework.org/schema/aop"
xmlns:tx="http://www.springframework.org/schema/tx"
xsi:schemaLocation="
http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.5.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.5.xsd"
default-lazy-init="true">
<bean id="cacheManager" class="org.springframework.cache.ehcache.EhCacheManagerFactoryBean">
<property name="configLocation">
<value>classpath:ehcache.xml</value>
</property>
</bean>
<bean id="deptCache" class="org.springframework.cache.ehcache.EhCacheFactoryBean">
<property name="cacheManager" ref="cacheManager"/>
<property name="beanName" value="democache"/>
</bean>
<bean id="cacheInterceptor" class="com.xiaolu.interceptor.MethodCacheInterceptor">
<property name="cache" ref="deptCache"/>
</bean>
<bean id="methodCachePointcutAdvisor" class="org.springframework.aop.support.RegexpMethodPointcutAdvisor">
<property name="advice" ref="cacheInterceptor"/>
<property name="patterns">
<list>
<value>.*getAllDept</value>
</list>
</property>
</bean>
<bean id="deptService" class="com.xiaolu.service.DeptService"/>
<bean id="proxyFactoryBean" class="org.springframework.aop.framework.ProxyFactoryBean">
<property name="target" ref="deptService"/>
<property name="interceptorNames">
<list>
<value>methodCachePointcutAdvisor</value>
</list>
</property>
</bean>
</beans>

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监听器

package com.xiaolu.interceptor;
import java.io.Serializable;
import net.sf.ehcache.Cache;
import net.sf.ehcache.Element;
import org.aopalliance.intercept.MethodInterceptor;
import org.aopalliance.intercept.MethodInvocation;
import org.springframework.beans.factory.InitializingBean;
import org.springframework.util.Assert;
public class MethodCacheInterceptor implements MethodInterceptor,InitializingBean {
private Cache cache;
@Override
public Object invoke(MethodInvocation invocation) throws Throwable {
String targetName = invocation.getThis().getClass().getName();
String methodName = invocation.getMethod().getName();
Object[] arguments = invocation.getArguments();
Object result = null;
String cacheKey = getCacheKey(targetName, methodName, arguments);
System.out.println("cacheKey:"+cacheKey);
Element element = null;
System.out.println("-----1-----");
synchronized(this){
element = cache.get(cacheKey);
if(null == element){
result = invocation.proceed();
System.out.println("-----2----");
element = new Element(cacheKey, (Serializable)result);
cache.put(element);
}
}
return element.getValue();
}
@Override
public void afterPropertiesSet() throws Exception {
Assert.notNull(cache,
"A cache is required. Use setCache(Cache) to provide one.");
}
private String getCacheKey(String targetName,String methodName,Object[] arguments){
StringBuilder sb = new StringBuilder();
sb.append(targetName).append(".").append(methodName);
if((arguments.length !=0)&&(arguments != null)){
for(int i=0;i<arguments.length;i++){
sb.append(".").append(arguments[i]);
}
}
return sb.toString();
}
public void setCache(Cache cache) {
this.cache = cache;
}
}

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访问数据库的类

package com.xiaolu.service;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.util.ArrayList;
import java.util.List;
import com.xiaolu.pojo.Dept;
public class DeptService {
Connection conn = null;
PreparedStatement pstmt = null;
ResultSet rs = null;
public List<Dept> getAllDept(){
String sql = "select * from dept";
List<Dept> list = new ArrayList<Dept>();
try {
Class.forName("oracle.jdbc.driver.OracleDriver");
conn = DriverManager.getConnection("jdbc:oracle:thin:@127.0.0.1:1521:orcl","scott","tiger");
pstmt = conn.prepareStatement(sql);
rs = pstmt.executeQuery();
while(rs.next()){
Dept dept = new Dept();
dept.setDeptno(rs.getInt("deptno"));
dept.setDname(rs.getString("dname"));
dept.setLoc(rs.getString("loc"));
list.add(dept);
}
} catch (Exception e) {
e.printStackTrace();
}
return list;
}
}

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实体类

package com.xiaolu.pojo;
import java.io.Serializable;
public class Dept implements Serializable{
/**
*
*/
private static final long serialVersionUID = 1L;
private int deptno;
private String dname;
private String loc;
public int getDeptno() {
return deptno;
}
public void setDeptno(int deptno) {
this.deptno = deptno;
}
public String getDname() {
return dname;
}
public void setDname(String dname) {
this.dname = dname;
}
public String getLoc() {
return loc;
}
public void setLoc(String loc) {
this.loc = loc;
}
}

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测试代码

package test;
import java.util.List;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import com.xiaolu.pojo.Dept;
import com.xiaolu.service.DeptService;
import net.sf.ehcache.Cache;
import net.sf.ehcache.CacheManager;
import net.sf.ehcache.Element;
public class Test {
public static void main(String[] args) {
ApplicationContext context = new ClassPathXmlApplicationContext("applicationContext.xml");
DeptService service = (DeptService) context.getBean("proxyFactoryBean");
List<Dept> list = service.getAllDept();
for(Dept dept:list){
System.out.println(dept.getDname());
}
}
}

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求助原帖：http://bbs.ibeifeng.com/read-htm-tid-65400.html

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