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README
Apache-2.0

btg-httpsession

项目说明

实现了httpsession标准适用于普通web项目和jfinal项目的分布式session

使用方式

一、配置方式:
1、通过filter配置(非jfinal项目推荐配置方式);
    /**
     *
     * BTGHttpSessionRequest替换filter(local session管理)
     * 注意:此filter优先级必须大于业务系统处理相关filter
     *
     * 若需要redis、db模式的session管理:
     * 1、请在初始化配置参数init-param
     *     sessionDao:可选,默认为local。
     *        local-使用local的BTGSessionDao;
     *        redis-使用redis的BTGSessionDao
     *        db-使用redis的BTGSessionDao;
     *     dname:可选,默认为jfinal默认;
     *        若sessionDao为redis,该参数则表示RedisPlugin的name;
     *        若sessionDao为db,该参数表示ActiveRecordPlugin的name;
     * 2、或者扩展此类,重写init方法完成sessionDao的初始化即可
     */
    <filter>
        <filter-name>btgsession</filter-name>
        <filter-class>cn.usbtg.httpsession.servlet.filter.BTGHttpSessionFilter</filter-class>
        <init-param>
            <param-name>sessionDao</param-name>
            <param-value>redis</param-value>
        </init-param>
        <init-param>
            <param-name>dname</param-name>
            <param-value>myredis</param-value>
        </init-param>
    </filter>
    <filter-mapping>
        <filter-name>btgsession</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>

2、(jfinal项目推荐)使用jfinal的plugin+interceptor(interceptor或handler,二选一)配置(若使用默认session管理容器无需配置plugin
    ,仅当需要使用非默认BTGSessionDao实现时,需要在plugin中进行初始化);
    JfinalConfig:可选配置,用户初始化sessionDao实现方案
        public void configPlugin(Plugins me) {
            //local(默认,无需配置)
            BTGSessionDao localSessionDao = new BTGLocalSessionDao();
            BTGSessionPlugin sessionPlugin = new BTGSessionPlugin(localSessionDao);
            me.add(sessionPlugin);

            //redis
            BTGSessionDao redisSessionDao = new BTGRedisSessionDao();
            BTGSessionDao redisSessionDao = new BTGRedisSessionDao("myredis");
            BTGSessionPlugin sessionPlugin = new BTGSessionPlugin(redisSessionDao);
            me.add(sessionPlugin);

            //db
            BTGSessionDao dbSessionDao = new BTGDBSessionDao();
            BTGSessionDao dbSessionDao = new BTGDBSessionDao("mydb");
            BTGSessionPlugin sessionPlugin = new BTGSessionPlugin(dbSessionDao);
            me.add(sessionPlugin);
        }

    Interceptor:必须配置,用于替换session管理机制
        me.add(new BTGHttpSessionInterceptor());

    Handler:必须配置,用于替换session管理机制
        me.add(new BTGHttpSessionHandler());

二、调用API:
1、使用BTGHttpSessionContext接口的实现类BTGStandardSessionContext直接完成对session的操作;
    getSession(String sessionId):BTGStandardSessionContext.getSessionContext().getSession(sessionId)
    getNewSession():BTGStandardSessionContext.getSessionContext().getNewSession()
    更多api请查看BTGSessionContext接口

2、(推荐)使用静态访问类SessionKit完成对session的操作;
    getSession(String sessionId):SessionKit.getSession(sessionId)
    getNewSession():SessionKit.getNewSession()
    更多api请查看SessionKit类

升级记录

4.0.11
1、修复第一次请求中获取到的session与response返回的cookie中的sessionid不一致的问题;

4.0.10
1、修复大权限其他账户有表判断不准确时的bug;

4.0.9
1、增加自动初始化表的支持;

4.0.8
1、btg-util升级至4.0.14;

v4.0.7
1、修复oracle保存和更新session对象报错的bug;
2、优化过期session清理机制,从业务逻辑中玻璃,使用单独线程清理;
3、BTGHttpSessionFilter、BTGSessionPlugin提供更丰富的参数支持;

v4.0.6
1、为了更好兼容oracle,更改默认表名和列名;
2、增加oralce脚本;

v4.0.5
1、修复session过期时间秒被当做毫秒处理的bug;

v4.0.4
1、session超时时间单位由分钟更换为秒;

v4.0.3
1、session超时时间单位由毫秒更换为分钟;
2、过期session清理机制触发周期单位由毫秒更换为秒;
3、session最后访问时间同步更新机制触发周期默认值更改为实时;

v4.0.2
1、jfinal升级到3.6;

v4.0.1
1、转为独立maven依赖,去掉parent;

v3.0.3
1、btg-parent升级到v2.0.1;

v3.0.2
1、统一依赖管理;

v3.0.1
1、统一迁移至公司名下;

v2.0.1
1、转为maven项目;
2、整理包名;

v1.2.1
1、修复session刷新时cookie未延长有效时间的bug(interceptor和handler);

v1.1.1.201706161359
1、修复session刷新时cookie未延长有效时间的bug;

v1.1.1.201706151713
1、考虑到jar包以后维护可能会比较频繁,特统一版本号命名方式;

v1.0.1704071433:
1、filter增加参数支持;

v1.0.1704071018:
1、修复cookie刷新逻辑;
2、修改使用说明(README.md);

v1.0.1704061218:
1、增加jfinal的handler;
2、BTGSessionPlugin;
3、修正filter逻辑;
4、增加禁用简单单点登录的配置;
5、修正intercepter逻辑;

v1.0.1704011125:
1、session管理器刷新session修复bug;

v1.0.1703290911:
1、防止更新太频繁影响性能,增加session最后访问时间更细同步机制多重策略配置,内置三种方式,
   实时(设置为0),间隔时间(默认,30000毫秒),不更新(设置为小于0);
2、调整session最后访问时间更新算法,最后访问时间大于上次访问时间时更新;
3、BTGSession增加克隆方法;
4、调整session刷新更新算法,保留原有session参数(重复时使用新值覆盖旧值的方式处理);

v1.0.1703240949:
1、设置默认cookie path为项目名称(原始默认为/);

v1.0.20170321:
1、修复BTGSessionPlugin设置cookie的path无效的bug;

v1.0.4:
1、修复项目停止后,session被清空的bug(插件停止调用了clear()方法);

v1.0.3:
1、修改session cookie的path为可配置;

v1.0.2:
1、修正对getSession()和getSession(boolean create)的误解(查询HttpServlet官方文档,getSession()与getSession(true)等同;
2、增加自动写入session cookie;
3、取消filter方式destroy时对session容器的清空操作;
4、基于DB的过期session清理机制进行优化,性能大幅度提升;
5、将基于DB存放session的建表sql脚本加入进来(暂时只贴了mysql的,其他数据库后续补充);

v1.0.1:
1、基于原有btg-session-jfinal版本,完成对HttpSession的实现;
2、提供两种使用配置方式,filter和jfinal的plugin+interceptor;
3、更好的session过期清理策略;
4、二级缓存策略优化;
5、性能提升;

豆圆

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简介

实现了httpsession标准适用于普通web项目和jfinal项目的分布式session 展开 收起
Java 等 2 种语言
Apache-2.0
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