spring中配置memcache

peiyuan1030

　　

一. 安装memcache　　
　　1.下载memcache
　　下载地址 http://memcached.org/  最新版本v1.4.15
　　下载libevent  地址http://libevent.org/  （通信程序，memcache所依赖的异步程序通知库）
　　linux安装命令：
　　先安装libevent
　　
# tar zxvf libevent-1.4.9-stable.tar.gz
# cdlibevent-1.4.9-stable
# ./configure--prefix=/usr
# make
# make install　　测试libevent是否安装成功：
　　#ll /usr/lib| grep libevent
　　运行memcached
　　# /usr/local/bin/memcached -p 11211 –d  -m 512 -vv
　　检查是否正常启动
　　# telnet localhost 11211
　　2.windows下安装memcache
　　
　　安装完成后服务中会出现
　　启动服务后就可以连接memcache服务器了
　　
　　
　　一些基本的使用就不在这里介绍了。接下来进入主题在spring中配置memcache。
　　
　　二、在spring中配置memcache
　　1、新建配置文件 ：spring-memcache.xml的spring配置文件
　　
　　
<?xml version=&quot;1.0&quot; encoding=&quot;UTF-8&quot;?>
<beans xmlns=&quot;http://www.springframework.org/schema/beans&quot;
xmlns:xsi=&quot;http://www.w3.org/2001/XMLSchema-instance&quot; xmlns:context=&quot;http://www.springframework.org/schema/context&quot;
xmlns:aop=&quot;http://www.springframework.org/schema/aop&quot; xmlns:tx=&quot;http://www.springframework.org/schema/tx&quot;
xsi:schemaLocation=&quot;http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-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&quot;>
<bean id=&quot;memcachedPool&quot; class=&quot;com.danga.MemCached.SockIOPool&quot;
factory-method=&quot;getInstance&quot; init-method=&quot;initialize&quot; destroy-method=&quot;shutDown&quot;>

<constructor-arg>
<value>memCachedPool</value>
</constructor-arg>
<property name=&quot;servers&quot;>
<list>
<value>${memcache.server}</value>
</list>
</property>

<property name=&quot;initConn&quot;>
<value>${memcache.initConn}</value>
</property>
<property name=&quot;minConn&quot;>
<value>${memcache.initConn}</value>
</property>

<property name=&quot;maxConn&quot;>
<value>${memcache.initConn}</value>
</property>
<property name=&quot;maintSleep&quot;>
<value>${memcache.maintSleep}</value>
</property>

<property name=&quot;nagle&quot;>
<value>${memcache.nagle}</value>
</property>
<property name=&quot;socketTO&quot;>
<value>${memcache.socketTO}</value>
</property>
</bean>
<bean id=&quot;memCachedClient&quot; class=&quot;com.danga.MemCached.MemCachedClient&quot;>
<constructor-arg>
<value>memCachedPool</value>
</constructor-arg>
</bean>
</beans>


　　
　　


　　2、在web.xml中配置新建的文件
　　<!-- 配置spring的监听器,加载Spring配置文件-->
　　

<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath*:applicationContext,
classpath*:spring-*.xml,
classpath*:applicationContext-*.xml
</param-value>
</context-param>

3、修改spring的配置文件applicationContext.xml,并添加一个spring工具类,便于以后调用　　
　　<bean
class=&quot;org.springframework.beans.factory.config.PropertyPlaceholderConfigurer&quot;>
<property name=&quot;locations&quot;>
<list>
<value>classpath:memcached.properties</value>
<value>classpath:mysql.properties</value>
</list>
</property>
</bean>

4、创建memcache的资源文件和spring工具类

memcache.properties
memcache.server=127.0.0.1:11211
memcache.initConn=20
memcache.minConn=10
memcache.maxConn=50
memcache.maintSleep=3000
memcache.nagle=false
memcache.socketTO=3000


　　
　　

spring工具类：
　　

package com.hope.common;
import java.util.Map;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.springframework.context.support.ClassPathXmlApplicationContext;
public class SpringContextHolder implements ApplicationContextAware {
private static ApplicationContextapplicationContext =new ClassPathXmlApplicationContext(&quot;spring-memcache.xml&quot;);
public void setApplicationContext(ApplicationContext applicationContext){
SpringContextHolder.applicationContext = applicationContext;
}
public static ApplicationContext getApplicationContext(){
checkApplicationContext();
return applicationContext;
}
@SuppressWarnings(&quot;unchecked&quot;)
public static <T> T getBean(String name){
checkApplicationContext();
return (T) applicationContext.getBean(name);
}
@SuppressWarnings(&quot;unchecked&quot;)
public static <T> T getBean(Class<T> clazz){
checkApplicationContext();
Map beanMaps = applicationContext.getBeansOfType(clazz);
if (beanMaps != null && !beanMaps.isEmpty()) {
return (T) beanMaps.values().iterator().next();
} else {
return null;
}
}
private static void checkApplicationContext(){
if (applicationContext == null) {
throw new IllegalStateException(
&quot;applicaitonContext未注入,请在applicationContext.xml中定义SpringContextHolder&quot;);
}
}
}

　　
　　
　　



配置memcache自己的工具类：
　　

import com.danga.MemCached.MemCachedClient;
public class MemcacheUtil {
public static MemCachedClient getMemCachedClient(){
return SpringContextHolder.getBean(&quot;memCachedClient&quot;);
}
}


　　
　　



最后用junit测试是否成功：
　　

package com.hope;
import org.junit.Before;
import org.junit.Test;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import com.danga.MemCached.MemCachedClient;
public class TestMemcache {
MemCachedClient memCachedClient;
@Before
public void beforeTest(){
ApplicationContext atx = new ClassPathXmlApplicationContext(&quot;spring-memcache.xml&quot;);
memCachedClient = (MemCachedClient)atx.getBean(&quot;memCachedClient&quot;);
}
@Test
public void TestMem(){
memCachedClient.set(&quot;name&quot;, &quot;liu&quot;);
System.out.println(memCachedClient.get(&quot;name&quot;));
}
}

　　



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