如果英文不错的看,建议直接看官网吧,官网写的挺清楚。下面的内容是转载的一篇文章,自己补充了一些,供大家参考,也欢迎大家一起讨论
官方截止到2015-10-12前是不支持Tomcat8的,详情见官网:https://github.com/jcoleman/tomcat-redis-session-manager
锐洋智能修改的支持Tomcat8的 reyo.redis.session.manager.tomcat8
修改的源代码:RedisSessionManager.java
@SuppressWarnings("deprecation")
private void initializeSerializer() throws ClassNotFoundException, IllegalAccessException, InstantiationException {
log.info("Attempting to use serializer :" + serializationStrategyClass);
serializer = (Serializer) Class.forName(serializationStrategyClass).newInstance();
Loader loader = null;
if (getContainer() != null) {
loader = getContainer().getLoader();
}
ClassLoader classLoader = null;
if (loader != null) {
classLoader = loader.getClassLoader();
}
serializer.setClassLoader(classLoader);
}
修改后的内容
private void initializeSerializer() throws ClassNotFoundException, IllegalAccessException, InstantiationException {
log.info("Attempting to use serializer :" + serializationStrategyClass);
serializer = (Serializer) Class.forName(serializationStrategyClass).newInstance();
Loader loader = null;
Context context = this.getContext();
if (context != null) {
loader = context.getLoader();
}
ClassLoader classLoader = null;
if (loader != null) {
classLoader = loader.getClassLoader();
}
serializer.setClassLoader(classLoader);
}
前提:你已经部署了Redis,尚未学会的略过
其实很简单,就几个步骤:
1.配置Tomcat的conf目录下的context.xml文件:
1> 单点Reids配置
<Valve className="reyo.redis.session.manager.tomcat8.RedisSessionHandlerValve" />
<Manager className="reyo.redis.session.manager.tomcat8.RedisSessionManager" host="localhost" port="6379" database="0" password="reyo" maxInactiveInterval="60"/> |
2> Sentinel集群配置:
<!-- Sentinel 配置 -->
<Valve className="reyo.redis.session.manager.tomcat8.RedisSessionHandlerValve" />
<Manager className="reyo.redis.session.manager.tomcat8.RedisSessionManager"
maxInactiveInterval="60"
sentinelMaster="mymaster"
sentinels="127.0.0.1:26379,127.0.0.1:26380,127.0.0.1:26381,127.0.0.1:26382" />
2.添加jar
3.测试
1>
存储Session:
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { System.out.println( "hello" ); //取得Session对象 HttpSession session=request.getSession(); //设置Session属性 for (int i= 0 ;i< 100000 ;i++){ session.setAttribute( "name" +i, "Magci_" +i); } } |
2>重启Tomcat:假如Session保存在tomcat下,重启后Session不存在;如果保存在Redis下,Tomcat重启对Session无影响
3>取出Session:
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { System.out.println( "hello" );
HttpSession session=request.getSession(); //取出Session属性 for ( int i= 0 ;i< 100000 ;i++){ System.out.println(session.getAttribute( "name" +i)); } } |
注意事项:从Tomcat6开始默认开启了Session持久化设置,测试时可以关闭本地Session持久化,其实也很简单,在Tomcat的conf目录下的context.xml文件中,取消注释下面那段配置即可:
<!-- Uncomment this to disable session persistence across Tomcat restarts --> <!-- <Manager pathname="" /> --> |
需要注意的是:
web.xml中的配置是有效的,即使是context.xml总配置maxInactiveInterval默认60秒,只要web.xml中的sessionConfig配置30分钟,则session的失效时间还是30分钟。
运行效果图:
一:redis主从服务器
二:redis Sentinel集群(三台)
三:tomcat8.x 集群(两台)
Sentinel集群下的tomcat...
四:nginx作为前端服务器
五:网站运行效果图:
实例测试地址:http://sms.reyo.cn
用户名:aa 密码:123456