标签：j2ee spring hibernate 二级缓存 依赖注入
Spring4+hibernate4+Struts2的整合，整合完成后我会把这个项目上传上去，但是我的建议是最好还是自己在自己的电脑上自己整合一下，我不保证一定没问题
前面那个，我们已经基本整合了SSH框架，但是还是有一些小小的瑕疵，
比如：PersonAction.java里面的
//获取实例，方法1
ServletContext sc = ServletActionContext.getRequest().getSession().getServletContext();
WebApplicationContext wac = (WebApplicationContext) sc.getAttribute(WebApplicationContext.ROOT_WEB_APPLICATION_CONTEXT_ATTRIBUTE);
//方法2
WebApplicationContext webApplicationContext = WebApplicationContextUtils.
getRequiredWebApplicationContext(ServletActionContext.getServletContext());
if(wac == webApplicationContext)
{
System.out.println("ok!!!");
}
PersonService personService = (PersonService) wac.getBean("personServiceBean");
@Resource private PersonService personService; //先按名字注入，如果找不到的话就按类型注入
要用spring的依赖注入的话，我们就得把action交给spring管理了
在spring中添加
<bean id="PersonAction" class="cn.cutter_point.web.action.PersonAction" autowire="byName" />
spring中修改bean
<!-- hibernate二级缓存的配置 --> <bean id="sessionFactory" class="org.springframework.orm.hibernate4.LocalSessionFactoryBean"> <!-- configuration elided for brevity --> <property name="dataSource" ref="myDataSource" /> <property name="mappingResources"> <list> <!-- 映射文件 --> <value>cn/cutter_point/bean/Person.hbm.xml</value> </list> </property> <property name="hibernateProperties"> <!-- 用来配置hibernate的属性配置 --> <value> hibernate.dialect=org.hibernate.dialect.MySQLDialect hibernate.hbm2ddl.auto=update <!--其他取值 create、create-drop、update、validate none --> hibernate.show_sql=true hibernate.format_sql=true <!-- 开启二级缓存功能 --> hibernate.cache.use_second_level_cache = true hibernate.cache.use_query_cache = false hibernate.cache.region.factory_class = org.hibernate.cache.ehcache.EhCacheRegionFactory <!-- hibernate3的二级缓存配置 --> <!-- <property name="hibernate.cache.provider_class">org.hibernate.cache.EhCacheProvider</property> --> </value> </property> </bean>
！！！！！！！！
我勒个擦，感情这个官方文档就是给我们看的，官方的人都是不看的啊
这三个一个都别想偷懒了，都得加，我是亲身经历了的，实在懒得动结果一个一个地加，反而更麻烦，早知道管他什么鸡巴毛，一把抓进去好了
ehcache.xml
<!--
~ Hibernate, Relational Persistence for Idiomatic Java
~
~ Copyright (c) 2007, Red Hat Middleware LLC or third-party contributors as
~ indicated by the @author tags or express copyright attribution
~ statements applied by the authors. All third-party contributions are
~ distributed under license by Red Hat Middleware LLC.
~
~ This copyrighted material is made available to anyone wishing to use, modify,
~ copy, or redistribute it subject to the terms and conditions of the GNU
~ Lesser General Public License, as published by the Free Software Foundation.
~
~ This program is distributed in the hope that it will be useful,
~ but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
~ or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
~ for more details.
~
~ You should have received a copy of the GNU Lesser General Public License
~ along with this distribution; if not, write to:
~ Free Software Foundation, Inc.
~ 51 Franklin Street, Fifth Floor
~ Boston, MA 02110-1301 USA
-->
<ehcache>
<!-- Sets the path to the directory where cache .data files are created.
If the path is a Java System Property it is replaced by
its value in the running VM.
The following properties are translated:
user.home - User's home directory
user.dir - User's current working directory
java.io.tmpdir - Default temp file path -->
<!-- 缓存文件存放到硬盘哪里 -->
<diskStore path="G:\Workspaces\MyEclipse Professional 2014\ssh\cacheFile" />
<!--Default Cache configuration. These will applied to caches programmatically created through
the CacheManager.
The following attributes are required for defaultCache:
maxInMemory - Sets the maximum number of objects that will be created in memory
eternal - Sets whether elements are eternal. If eternal, timeouts are ignored and the element
is never expired.
timeToIdleSeconds - Sets the time to idle for an element before it expires. Is only used
if the element is not eternal. Idle time is now - last accessed time
timeToLiveSeconds - Sets the time to live for an element before it expires. Is only used
if the element is not eternal. TTL is now - creation time
overflowToDisk - Sets whether elements can overflow to disk when the in-memory cache
has reached the maxInMemory limit.
-->
<!--
defaultCache节点为缺省的缓存策略
maxElementsInMemory 内存中最大允许存在的对象数量
eternal 设置缓存中的对象是否永远不过期
overflowToDisk 把溢出的对象存放到硬盘上
timeToIdleSeconds 指定缓存对象空闲多长时间就过期,过期的对象会被清除掉
timeToLiveSeconds 指定缓存对象总的存活时间
diskPersistent 当jvm结束是是否持久化对象
diskExpiryThreadIntervalSeconds 指定专门用于清除过期对象的监听线程的轮询时间
-->
<defaultCache
maxElementsInMemory="10000"
eternal="false"
timeToIdleSeconds="120"
timeToLiveSeconds="120"
overflowToDisk="true"
/>
<!-- 特殊配置项目 -->
<cache name="cn.cutter_point.bean.Person" maxElementsInMemory="100" eternal="false" timeToIdleSeconds="300" timeToLiveSeconds="600"
overflowToDisk="true" />
</ehcache>
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-mapping PUBLIC
"-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://www.hibernate.org/dtd/hibernate-mapping-3.0.dtd">
<hibernate-mapping package="cn.cutter_point.bean">
<!-- <class name="Version">
<id name="id">
<generator class="org.hibernate.id.TableHiLoGenerator">
<param name="table">uid_table</param>
<param name="column">next_hi_value_column</param>
</generator>
</id>
<property name="description"/>
</class> -->
<class name="Person" table="person">
<cache usage="read-write" region="cn.cutter_point.bean.Person" />
<id name="id">
<generator class="native" />
</id>
<property name="name" length="20" not-null="true" />
</class>
</hibernate-mapping> @Test
public void testGetPerson()
{
Person person = personService.getPerson(2);
System.out.println(person.getName());
System.out.println("关闭数据区==========");
try
{
Thread.sleep(1000*15);//15秒
}
catch (InterruptedException e)
{
e.printStackTrace();
}
System.out.println("第二次获取数据");
person = personService.getPerson(2);
System.out.println(person.getName()+" ++++++++++");
}
服务已开，时间是2015年3月30日19:07
我们开始测试
接下来我们关闭服务
接下来，我们看看控制台输出
结果是有输出的
2015年3月30日19:11左右，为了截图，我吧那个sleep的时间延长了
其实我们还可以吧那个cache的属性改一下，看看那个缓存文件在哪
标签：j2ee spring hibernate 二级缓存 依赖注入
原文地址：http://blog.csdn.net/cutter_point/article/details/44755035
