HttpSessionStore

本项目提供了Clustered Sessions功能，采用外置的Redis来存储Session数据，以此来解决Session共享的问题,实现Non-sticky Session。

• 实现原理: 通过Filter，借助HttpServletRequestWrapper覆盖getSession()方法，接管创建和管理Session的工作。
• 核心特性: 对应用来讲是完全透明的,支持在不跨域的前提下,跨应用的session共享.
• 类似项目: 类似的开源项目有tomcat-redis-session-manager,memcached-session-manager,spring-session等。
• 兼 容 性: Tomcat和Jetty测试通过,理论上兼容其他Web容器。
• 扩 展 性: 通过实现com.sessionstore.SessionStoreManager接口,可以增加memcached等其他Nosql的实现。

使用

maven: 需先编译安装到本地仓库或者本地私服。

    <dependency>
      <groupId>dance</groupId>
      <artifactId>HttpSessionStore</artifactId>
      <version>0.0.1</version>
    </dependency>

#配置方法一(QuickStart) web.xml配置

<!DOCTYPE web-app PUBLIC
 "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
 "http://java.sun.com/dtd/web-app_2_3.dtd" >
<web-app>
  <display-name>demo</display-name>
    <filter>
        <filter-name>SessionStoreFilter</filter-name>
        <filter-class>com.sessionstore.SessionStoreFilter</filter-class>
        <init-param>
            <param-name>redisIp</param-name>
            <param-value>127.0.0.1</param-value>
        </init-param>
        <init-param>
            <param-name>redisPort</param-name>
            <param-value>6379</param-value>
        </init-param>
        <init-param>
            <param-name>redisTimeout</param-name>
            <param-value>5000</param-value>
        </init-param>
        <init-param>
	    <!-- 会话最大非活动时间（单位秒） -->
            <param-name>sessionTimeout</param-name>
            <param-value>300</param-value>
        </init-param>
        <init-param>
	    <!-- 域名,例如:baidu.com 或 留空 -->
            <param-name>cookieDomain</param-name>
            <param-value></param-value>
        </init-param>
    </filter>
    <filter-mapping>
        <filter-name>SessionStoreFilter</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>
</web-app>

#配置方法二（集成spring） Spring配置

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd">

    <bean id="sessionStoreFilter" class="com.sessionstore.SessionStoreFilter">
        <property name="sessionStoreManager" ref="redisSessionStoreManager" />
    </bean>

    <bean id="redisSessionStoreManager" class="com.sessionstore.redis.RedisSessionStoreManager" init-method="init">
        <property name="jedisPool" ref="jedisPool" />
        <!-- 会话最大非活动时间（单位秒） -->
        <property name="sessionTimeout" value="300"></property>
        <!-- 域名,例如:baidu.com 或 留空, 设置根域名可实现跨应用session共享 -->
        <property name="cookieDomain" value=""></property>
    </bean>


    <bean id="jedisPool" class="redis.clients.jedis.JedisPool">
        <constructor-arg index="0" ref ="jedisConfig"/>
        <constructor-arg index="1" value="127.0.0.1"/>
        <constructor-arg index="2" value="6379" type="int" />
        <constructor-arg index="3" value="5000" type="int" />
    </bean>

    <bean id="jedisConfig" class="redis.clients.jedis.JedisPoolConfig">
        <!-- 详细配置略 -->
    </bean>

</beans>

web.xml配置

<!DOCTYPE web-app PUBLIC
 "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
 "http://java.sun.com/dtd/web-app_2_3.dtd" >
<web-app>
  <display-name>Archetype Created Web Application</display-name>
    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>
    <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>
            classpath:applicationContext.xml
        </param-value>
    </context-param>
    <filter>
        <filter-name>SessionStoreFilter</filter-name>
        <filter-class>org.springframework.web.filter.DelegatingFilterProxy</filter-class>
        <init-param>
            <param-name>targetBeanName</param-name>
            <param-value>sessionStoreFilter</param-value>
        </init-param>
    </filter>
    <filter-mapping>
        <filter-name>SessionStoreFilter</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>
</web-app>