shiro会话管理示例代码
<p>shiro提供了完整的企业级会话管理功能，不依赖于底层容器（如web容器tomcat），不管javase还是javaee环境都可以使用，提供了会话管理、会话事件监听、会话存储/持久化、容器无关的集群、失效/过期支持、对web的透明支持、sso单点登录的支持等特性。即直接使用shiro的会话管理可以直接替换如web容器的会话管理。 </p>
<p>
<span><strong>会话</strong></span></p>
<p>
所谓会话，即用户访问应用时保持的连接关系，在多次交互中应用能够识别出当前访问的用户是谁，且可以在多次交互中保存一些数据。如访问一些网站时登录成功后，网站可以记住用户，且在退出之前都可以识别当前用户是谁。 </p>
<p>
shiro的会话支持不仅可以在普通的javase应用中使用，也可以在javaee应用中使用，如web应用。且使用方式是一致的。 </p>
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java代码 </p>
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<code class="java plain">login(</code><code class="java string">"classpath:shiro.ini"</code><code class="java plain">, </code><code class="java string">"zhang"</code><code class="java plain">, </code><code class="java string">"123"</code><code class="java plain">); </code>
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<code class="java plain">subject subject = securityutils.getsubject(); </code>
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<code class="java plain">session session = subject.getsession();</code>
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登录成功后使用<code>subject.getsession()</code>即可获取会话；其等价于<code>subject.getsession(true)</code>，即如果当前没有创建session对象会创建一个；另外<code>subject.getsession(false)</code>，如果当前没有创建session则返回null（不过默认情况下如果启用会话存储功能的话在创建subject时会主动创建一个session）。</p>
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java代码 </p>
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<code class="java plain">session.getid();</code>
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获取当前会话的唯一标识。 </p>
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java代码 </p>
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<code class="java plain">session.gethost();</code>
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获取当前subject的主机地址，该地址是通过hostauthenticationtoken.gethost()提供的。 </p>
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java代码 </p>
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<code class="java plain">session.gettimeout(); </code>
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<code class="java plain">session.settimeout(毫秒);</code>
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获取/设置当前session的过期时间；如果不设置默认是会话管理器的全局过期时间。 </p>
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java代码 </p>
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<code class="java plain">session.getstarttimestamp(); </code>
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<code class="java plain">session.getlastaccesstime();</code>
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获取会话的启动时间及最后访问时间；如果是javase应用需要自己定期调用session.touch()去更新最后访问时间；如果是web应用，每次进入shirofilter都会自动调用session.touch()来更新最后访问时间。 </p>
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java代码 </p>
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<code class="java plain">session.touch(); </code>
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<code class="java plain">session.stop();</code>
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更新会话最后访问时间及销毁会话；当subject.logout()时会自动调用stop方法来销毁会话。如果在web中，调用javax.servlet.http.httpsession. invalidate()也会自动调用shiro session.stop方法进行销毁shiro的会话。 </p>
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java代码 </p>
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<code class="java plain">session.setattribute(</code><code class="java string">"key"</code><code class="java plain">, </code><code class="java string">"123"</code><code class="java plain">); </code>
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<code class="java keyword">assert</code><code class="java plain">.assertequals(</code><code class="java string">"123"</code><code class="java plain">, session.getattribute(</code><code class="java string">"key"</code><code class="java plain">)); </code>
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<code class="java plain">session.removeattribute(</code><code class="java string">"key"</code><code class="java plain">);</code>
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设置/获取/删除会话属性；在整个会话范围内都可以对这些属性进行操作。 </p>
<p>
shiro提供的会话可以用于javase/javaee环境，不依赖于任何底层容器，可以独立使用，是完整的会话模块。 </p>
<p>
<span><strong>会话管理器</strong></span></p>
<p>
会话管理器管理着应用中所有subject的会话的创建、维护、删除、失效、验证等工作。是shiro的核心组件，顶层组件securitymanager直接继承了sessionmanager，且提供了sessionssecuritymanager实现直接把会话管理委托给相应的sessionmanager，defaultsecuritymanager及<br>
defaultwebsecuritymanager默认securitymanager都继承了sessionssecuritymanager。 </p>
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securitymanager提供了如下接口： </p>
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java代码 </p>
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<code class="java plain">session start(sessioncontext context); </code><code class="java comments">//启动会话 </code>
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<code class="java plain">session getsession(sessionkey key) </code><code class="java keyword">throws</code> <code class="java plain">sessionexception; </code><code class="java comments">//根据会话key获取会话</code>
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另外用于web环境的websessionmanager又提供了如下接口： </p>
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java代码 </p>
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<code class="java keyword">boolean</code> <code class="java plain">isservletcontainersessions();</code><code class="java comments">//是否使用servlet容器的会话</code>
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shiro还提供了validatingsessionmanager用于验资并过期会话： </p>
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java代码 </p>
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<code class="java keyword">void</code> <code class="java plain">validatesessions();</code><code class="java comments">//验证所有会话是否过期</code>
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<img title="shiro会话管理示例代码" alt="shiro会话管理示例代码" id="theimg" src="https://zhuji.jb51.net/uploads/img/202305/30488a51afe434eda69f01cc6291d627.jpg" style='font-size: 12px; border-top: 0px; font-family: "microsoft yahei", simsun, arial, sans-serif; border-right: 0px; white-space: normal; word-spacing: 0px; border-bottom: 0px; text-transform: none; font-weight: normal; color: rgb(51,51,51); padding-bottom: 0px; font-style: normal; text-align: left; padding-top: 0px; padding-left: 0px; margin: 0px; border-left: 0px; orphans: 2; widows: 2; letter-spacing: normal; padding-right: 0px; background-color: rgb(255,255,255); text-indent: 0px; font-variant-ligatures: normal; font-variant-caps: normal; -webkit-text-stroke-width: 0px'></p>
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shiro提供了三个默认实现：</p>
<p>
defaultsessionmanager：defaultsecuritymanager使用的默认实现，用于javase环境；<br>
servletcontainersessionmanager：defaultwebsecuritymanager使用的默认实现，用于web环境，其直接使用servlet容器的会话；</p>
<p>
defaultwebsessionmanager：用于web环境的实现，可以替代servletcontainersessionmanager，自己维护着会话，直接废弃了servlet容器的会话管理。</p>
<p>
替换securitymanager默认的sessionmanager可以在ini中配置（shiro.ini）：</p>
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java代码 </p>
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<code class="java plain">sessionmanager=org.apache.shiro.session.mgt.defaultsessionmanager </code>
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<code class="java plain">securitymanager.sessionmanager=$sessionmanager</code>
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web环境下的ini配置(shiro-web.ini)：</p>
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<!--endfragment--></p>
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java代码 </p>
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<code class="java plain">sessionmanager=org.apache.shiro.web.session.mgt.servletcontainersessionmanager </code>
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<code class="java plain">securitymanager.sessionmanager=$sessionmanager</code>
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另外可以设置会话的全局过期时间（毫秒为单位），默认30分钟：</p>
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java代码 </p>
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<code class="java plain">sessionmanager. globalsessiontimeout=</code><code class="java value">1800000</code>
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默认情况下globalsessiontimeout将应用给所有session。可以单独设置每个session的timeout属性来为每个session设置其超时时间。</p>
<p>
另外如果使用servletcontainersessionmanager进行会话管理，session的超时依赖于底层servlet容器的超时时间，可以在web.xml中配置其会话的超时时间（分钟为单位）： </p>
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java代码 </p>
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<code class="java plain"><session-config> </code>
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<code class="java spaces"> </code><code class="java plain"><session-timeout></code><code class="java value">30</code><code class="java plain"></session-timeout> </code>
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<code class="java plain"></session-config></code>
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在servlet容器中，默认使用jsessionid cookie维护会话，且会话默认是跟容器绑定的；在某些情况下可能需要使用自己的会话机制，此时我们可以使用defaultwebsessionmanager来维护会话：</p>
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java代码 </p>
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<code class="java plain">sessionidcookie=org.apache.shiro.web.servlet.simplecookie </code>
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<code class="java plain">sessionmanager=org.apache.shiro.web.session.mgt.defaultwebsessionmanager </code>
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<code class="java plain">sessionidcookie.name=sid </code>
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<code class="java plain">#sessionidcookie.domain=sishuok.com </code>
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<code class="java plain">#sessionidcookie.path= </code>
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<code class="java plain">sessionidcookie.maxage=</code><code class="java value">1800</code>
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<code class="java plain">sessionidcookie.httponly=</code><code class="java keyword">true</code>
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<code class="java plain">sessionmanager.sessionidcookie=$sessionidcookie </code>
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<code class="java plain">sessionmanager.sessionidcookieenabled=</code><code class="java keyword">true</code>
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<code class="java plain">.securitymanager.sessionmanager=$sessionmanager</code>
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sessionidcookie是sessionmanager创建会话cookie的模板：</p>
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sessionidcookie.name：设置cookie名字，默认为jsessionid；</p>
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sessionidcookie.domain：设置cookie的域名，默认空，即当前访问的域名；</p>
<p>
sessionidcookie.path：设置cookie的路径，默认空，即存储在域名根下；</p>
<p>
sessionidcookie.maxage：设置cookie的过期时间，秒为单位，默认-1表示关闭浏览器时过期cookie；</p>
<p>
sessionidcookie.httponly：如果设置为true，则客户端不会暴露给客户端脚本代码，使用httponly cookie有助于减少某些类型的跨站点脚本攻击；此特性需要实现了servlet 2.5 mr6及以上版本的规范的servlet容器支持；</p>
<p>
sessionmanager.sessionidcookieenabled：是否启用/禁用session id cookie，默认是启用的；如果禁用后将不会设置session id cookie，即默认使用了servlet容器的jsessionid，且通过url重写（url中的“;jsessionid=id”部分）保存session id。</p>
<p>
另外我们可以如“sessionmanager. sessionidcookie.name=sid”这种方式操作cookie模板。 </p>
<p>
<span><strong>会话监听器</strong></span></p>
<p>
会话监听器用于监听会话创建、过期及停止事件： </p>
<p>
java代码 </p>
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<code class="java keyword">public</code> <code class="java keyword">class</code> <code class="java plain">mysessionlistener1 </code><code class="java keyword">implements</code> <code class="java plain">sessionlistener { </code>
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<code class="java spaces"> </code><code class="java color1">@override</code>
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<code class="java spaces"> </code><code class="java keyword">public</code> <code class="java keyword">void</code> <code class="java plain">onstart(session session) {</code><code class="java comments">//会话创建时触发 </code>
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<code class="java spaces"> </code><code class="java plain">system.out.println(</code><code class="java string">"会话创建："</code> <code class="java plain">+ session.getid()); </code>
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<code class="java spaces"> </code><code class="java color1">@override</code>
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<code class="java spaces"> </code><code class="java keyword">public</code> <code class="java keyword">void</code> <code class="java plain">onexpiration(session session) {</code><code class="java comments">//会话过期时触发 </code>
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<code class="java spaces"> </code><code class="java plain">system.out.println(</code><code class="java string">"会话过期："</code> <code class="java plain">+ session.getid()); </code>
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<code class="java spaces"> </code><code class="java plain">} </code>
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<code class="java spaces"> </code><code class="java color1">@override</code>
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<code class="java spaces"> </code><code class="java keyword">public</code> <code class="java keyword">void</code> <code class="java plain">onstop(session session) {</code><code class="java comments">//退出/会话过期时触发 </code>
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<code class="java spaces"> </code><code class="java plain">system.out.println(</code><code class="java string">"会话停止："</code> <code class="java plain">+ session.getid()); </code>
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<p>
如果只想监听某一个事件，可以继承sessionlisteneradapter实现：</p>
<p>
java代码 </p>
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<code class="java keyword">public</code> <code class="java keyword">class</code> <code class="java plain">mysessionlistener2 </code><code class="java keyword">extends</code> <code class="java plain">sessionlisteneradapter { </code>
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<p>
在shiro-web.ini配置文件中可以进行如下配置设置会话监听器：</p>
<p>
java代码 </p>
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<code class="java plain">sessionlistener1=com.github.zhangkaitao.shiro.chapter10.web.listener.mysessionlistener1 </code>
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<code class="java plain">sessionlistener2=com.github.zhangkaitao.shiro.chapter10.web.listener.mysessionlistener2 </code>
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<p>
<span><strong>会话存储/持久化 </strong></span></p>
<p>
shiro提供sessiondao用于会话的crud，即dao（data access object）模式实现：</p>
<p>
java代码 </p>
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<code class="java comments">//如defaultsessionmanager在创建完session后会调用该方法；如保存到关系数据库/文件系统/nosql数据库；即可以实现会话的持久化；返回会话id；主要此处返回的id.equals(session.getid())； </code>
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<code class="java plain">serializable create(session session); </code>
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<code class="java comments">//根据会话id获取会话 </code>
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<code class="java plain">session readsession(serializable sessionid) </code><code class="java keyword">throws</code> <code class="java plain">unknownsessionexception; </code>
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<code class="java comments">//更新会话；如更新会话最后访问时间/停止会话/设置超时时间/设置移除属性等会调用 </code>
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<code class="java keyword">void</code> <code class="java plain">update(session session) </code><code class="java keyword">throws</code> <code class="java plain">unknownsessionexception; </code>
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<code class="java comments">//删除会话；当会话过期/会话停止（如用户退出时）会调用 </code>
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<code class="java keyword">void</code> <code class="java plain">delete(session session); </code>
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<code class="java comments">//获取当前所有活跃用户，如果用户量多此方法影响性能 </code>
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<code class="java plain">collection<session> getactivesessions();</code>
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<p>
shiro内嵌了如下sessiondao实现：</p>
<p>
<img title="shiro会话管理示例代码" alt="shiro会话管理示例代码" id="theimg" src="https://zhuji.jb51.net/uploads/img/202305/9a05ea75aca37e239dca9a3d07363f80.jpg" style='font-size: 12px; border-top: 0px; font-family: "microsoft yahei", simsun, arial, sans-serif; border-right: 0px; white-space: normal; word-spacing: 0px; border-bottom: 0px; text-transform: none; font-weight: normal; color: rgb(51,51,51); padding-bottom: 0px; font-style: normal; text-align: left; padding-top: 0px; padding-left: 0px; margin: 0px; border-left: 0px; orphans: 2; widows: 2; letter-spacing: normal; padding-right: 0px; background-color: rgb(255,255,255); text-indent: 0px; font-variant-ligatures: normal; font-variant-caps: normal; -webkit-text-stroke-width: 0px'></p>
<p>
abstractsessiondao提供了sessiondao的基础实现，如生成会话id等；cachingsessiondao提供了对开发者透明的会话缓存的功能，只需要设置相应的cachemanager即可；memorysessiondao直接在内存中进行会话维护；而enterprisecachesessiondao提供了缓存功能的会话维护，默认情况下使用mapcache实现，内部使用concurrenthashmap保存缓存的会话。</p>
<p>
可以通过如下配置设置sessiondao：</p>
<p>
java代码 </p>
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<code class="java plain">sessiondao=org.apache.shiro.session.mgt.eis.enterprisecachesessiondao </code>
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<code class="java plain">sessionmanager.sessiondao=$sessiondao</code>
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<p>
shiro提供了使用ehcache进行会话存储，ehcache可以配合terracotta实现容器无关的分布式集群。</p>
<p>
首先在pom.xml里添加如下依赖：</p>
<p>
java代码 </p>
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<code class="java plain"><dependency> </code>
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<code class="java spaces"> </code><code class="java plain"><groupid>org.apache.shiro</groupid> </code>
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<code class="java spaces"> </code><code class="java plain"><artifactid>shiro-ehcache</artifactid> </code>
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<code class="java spaces"> </code><code class="java plain"><version></code><code class="java value">1.2</code><code class="java plain">.</code><code class="java value">2</code><code class="java plain"></version> </code>
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<code class="java plain"></dependency></code>
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<p>
接着配置shiro-web.ini文件： </p>
<p>
java代码 </p>
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<code class="java plain">sessiondao=org.apache.shiro.session.mgt.eis.enterprisecachesessiondao </code>
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<code class="java plain">sessiondao. activesessionscachename=shiro-activesessioncache </code>
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<code class="java plain">sessionmanager.sessiondao=$sessiondao </code>
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<code class="java plain">cachemanager = org.apache.shiro.cache.ehcache.ehcachemanager </code>
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<code class="java plain">cachemanager.cachemanagerconfigfile=classpath:ehcache.xml </code>
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<code class="java plain">securitymanager.cachemanager = $cachemanager</code>
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<p>
sessiondao. activesessionscachename：设置session缓存名字，默认就是shiro-activesessioncache；</p>
<p>
cachemanager：缓存管理器，用于管理缓存的，此处使用ehcache实现；</p>
<p>
cachemanager.cachemanagerconfigfile：设置ehcache缓存的配置文件；</p>
<p>
securitymanager.cachemanager：设置securitymanager的cachemanager，会自动设置实现了cachemanageraware接口的相应对象，如sessiondao的cachemanager；</p>
<p>
然后配置ehcache.xml：</p>
<p>
java代码 </p>
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<code class="java plain"><cache name=</code><code class="java string">"shiro-activesessioncache"</code>
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<code class="java spaces"> </code><code class="java plain">maxentrieslocalheap=</code><code class="java string">"10000"</code>
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<code class="java spaces"> </code><code class="java plain">overflowtodisk=</code><code class="java string">"false"</code>
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<code class="java spaces"> </code><code class="java plain">eternal=</code><code class="java string">"false"</code>
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<code class="java spaces"> </code><code class="java plain">diskpersistent=</code><code class="java string">"false"</code>
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<code class="java spaces"> </code><code class="java plain">timetoliveseconds=</code><code class="java string">"0"</code>
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<code class="java spaces"> </code><code class="java plain">timetoidleseconds=</code><code class="java string">"0"</code>
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<code class="java spaces"> </code><code class="java plain">statistics=</code><code class="java string">"true"</code><code class="java plain">/></code>
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<p>
cache的名字为shiro-activesessioncache，即设置的sessiondao的activesessionscachename属性值。 </p>
<p>
另外可以通过如下ini配置设置会话id生成器：</p>
<p>
java代码 </p>
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<code class="java plain">sessiondao.sessionidgenerator=$sessionidgenerator</code>
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<p>
用于生成会话id，默认就是javauuidsessionidgenerator，使用java.util.uuid生成。 </p>
<p>
如果自定义实现sessiondao，继承cachingsessiondao即可：</p>
<p>
java代码 </p>
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<code class="java spaces"> </code><code class="java keyword">private</code> <code class="java plain">jdbctemplate jdbctemplate = jdbctemplateutils.jdbctemplate(); </code>
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<code class="java spaces"> </code><code class="java keyword">protected</code> <code class="java plain">serializable docreate(session session) { </code>
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<code class="java spaces"> </code><code class="java plain">serializable sessionid = generatesessionid(session); </code>
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<code class="java spaces"> </code><code class="java plain">assignsessionid(session, sessionid); </code>
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<code class="java spaces"> </code><code class="java plain">string sql = </code><code class="java string">"insert into sessions(id, session) values(?,?)"</code><code class="java plain">; </code>
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<code class="java spaces"> </code><code class="java plain">jdbctemplate.update(sql, sessionid, serializableutils.serialize(session)); </code>
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<code class="java spaces"> </code><code class="java keyword">return</code> <code class="java plain">session.getid(); </code>
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<code class="java spaces"> </code><code class="java plain">} </code>
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<code class="java keyword">protected</code> <code class="java keyword">void</code> <code class="java plain">doupdate(session session) { </code>
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<code class="java spaces"> </code><code class="java keyword">if</code><code class="java plain">(session </code><code class="java keyword">instanceof</code> <code class="java plain">validatingsession && !((validatingsession)session).isvalid()) { </code>
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<code class="java spaces"> </code><code class="java keyword">return</code><code class="java plain">; </code><code class="java comments">//如果会话过期/停止 没必要再更新了 </code>
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<code class="java spaces"> </code><code class="java plain">} </code>
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<code class="java spaces"> </code><code class="java plain">string sql = </code><code class="java string">"update sessions set session=? where id=?"</code><code class="java plain">; </code>
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<code class="java spaces"> </code><code class="java plain">jdbctemplate.update(sql, serializableutils.serialize(session), session.getid()); </code>
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<code class="java spaces"> </code><code class="java plain">} </code>
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<code class="java spaces"> </code><code class="java plain">string sql = </code><code class="java string">"delete from sessions where id=?"</code><code class="java plain">; </code>
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<code class="java spaces"> </code><code class="java plain">} </code>
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<code class="java spaces"> </code><code class="java keyword">protected</code> <code class="java plain">session doreadsession(serializable sessionid) { </code>
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<code class="java spaces"> </code><code class="java plain">string sql = </code><code class="java string">"select session from sessions where id=?"</code><code class="java plain">; </code>
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<code class="java spaces"> </code><code class="java plain">list<string> sessionstrlist = jdbctemplate.queryforlist(sql, string.</code><code class="java keyword">class</code><code class="java plain">, sessionid); </code>
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<code class="java spaces"> </code><code class="java keyword">if</code><code class="java plain">(sessionstrlist.size() == </code><code class="java value">0</code><code class="java plain">) </code><code class="java keyword">return</code> <code class="java keyword">null</code><code class="java plain">; </code>
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<code class="java spaces"> </code><code class="java keyword">return</code> <code class="java plain">serializableutils.deserialize(sessionstrlist.get(</code><code class="java value">0</code><code class="java plain">)); </code>
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<p>
docreate/doupdate/dodelete/doreadsession分别代表创建/修改/删除/读取会话；此处通过把会话序列化后存储到数据库实现；接着在shiro-web.ini中配置：</p>
<p>
java代码 </p>
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<code class="java plain">sessiondao=com.github.zhangkaitao.shiro.chapter10.session.dao.mysessiondao</code>
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<p>
其他设置和之前一样，因为继承了cachingsessiondao；所有在读取时会先查缓存中是否存在，如果找不到才到数据库中查找。 </p>
<p>
<span><strong>会话验证</strong></span></p>
<p>
shiro提供了会话验证调度器，用于定期的验证会话是否已过期，如果过期将停止会话；出于性能考虑，一般情况下都是获取会话时来验证会话是否过期并停止会话的；但是如在web环境中，如果用户不主动退出是不知道会话是否过期的，因此需要定期的检测会话是否过期，shiro提供了会话验证调度器sessionvalidationscheduler来做这件事情。</p>
<p>
可以通过如下ini配置开启会话验证： </p>
<p>
java代码 </p>
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<code class="java plain">sessionvalidationscheduler=org.apache.shiro.session.mgt.executorservicesessionvalidationscheduler </code>
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<code class="java plain">sessionvalidationscheduler.interval = </code><code class="java value">3600000</code>
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<code class="java plain">sessionmanager.sessionvalidationscheduler=$sessionvalidationscheduler</code>
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<p>
sessionvalidationscheduler：会话验证调度器，sessionmanager默认就是使用executorservicesessionvalidationscheduler，其使用jdk的scheduledexecutorservice进行定期调度并验证会话是否过期；</p>
<p>
sessionvalidationscheduler.interval：设置调度时间间隔，单位毫秒，默认就是1小时；</p>
<p>
sessionvalidationscheduler.sessionmanager：设置会话验证调度器进行会话验证时的会话管理器；</p>
<p>
sessionmanager.globalsessiontimeout：设置全局会话超时时间，默认30分钟，即如果30分钟内没有访问会话将过期；</p>
<p>
sessionmanager.sessionvalidationschedulerenabled：是否开启会话验证器，默认是开启的；</p>
<p>
sessionmanager.sessionvalidationscheduler：设置会话验证调度器，默认就是使用executorservicesessionvalidationscheduler。 </p>
<p>
shiro也提供了使用quartz会话验证调度器：</p>
<p>
java代码 </p>
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<code class="java plain">sessionvalidationscheduler=org.apache.shiro.session.mgt.quartz.quartzsessionvalidationscheduler </code>
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<code class="java plain">sessionvalidationscheduler.sessionvalidationinterval = </code><code class="java value">3600000</code>
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<p>
使用时需要导入shiro-quartz依赖：</p>
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java代码 </p>
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<code class="java plain"><dependency> </code>
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<code class="java spaces"> </code><code class="java plain"><artifactid>shiro-quartz</artifactid> </code>
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<code class="java spaces"> </code><code class="java plain"><version></code><code class="java value">1.2</code><code class="java plain">.</code><code class="java value">2</code><code class="java plain"></version> </code>
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<code class="java plain"></dependency></code>
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<p>
如上会话验证调度器实现都是直接调用abstractvalidatingsessionmanager 的validatesessions方法进行验证，其直接调用sessiondao的getactivesessions方法获取所有会话进行验证，如果会话比较多，会影响性能；可以考虑如分页获取会话并进行验证，如com.github.zhangkaitao.shiro.chapter10.session.scheduler.mysessionvalidationscheduler：</p>
<p>
java代码 </p>
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<code class="java comments">//分页获取会话并验证 </code>
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<code class="java plain">string sql = </code><code class="java string">"select session from sessions limit ?,?"</code><code class="java plain">; </code>
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<code class="java keyword">int</code> <code class="java plain">start = </code><code class="java value">0</code><code class="java plain">; </code><code class="java comments">//起始记录 </code>
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<code class="java keyword">int</code> <code class="java plain">size = </code><code class="java value">20</code><code class="java plain">; </code><code class="java comments">//每页大小 </code>
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<code class="java plain">list<string> sessionlist = jdbctemplate.queryforlist(sql, string.</code><code class="java keyword">class</code><code class="java plain">, start, size); </code>
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<code class="java spaces"> </code><code class="java keyword">for</code><code class="java plain">(string sessionstr : sessionlist) { </code>
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<code class="java spaces"> </code><code class="java keyword">try</code> <code class="java plain">{ </code>
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<code class="java spaces"> </code><code class="java plain">method validatemethod = </code>
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<code class="java spaces"> </code><code class="java plain">reflectionutils.findmethod(abstractvalidatingsessionmanager.</code><code class="java keyword">class</code><code class="java plain">, </code>
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<code class="java spaces"> </code><code class="java string">"validate"</code><code class="java plain">, session.</code><code class="java keyword">class</code><code class="java plain">, sessionkey.</code><code class="java keyword">class</code><code class="java plain">); </code>
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<code class="java spaces"> </code><code class="java plain">validatemethod.setaccessible(</code><code class="java keyword">true</code><code class="java plain">); </code>
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<code class="java spaces"> </code><code class="java plain">reflectionutils.invokemethod(validatemethod, </code>
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<code class="java spaces"> </code><code class="java plain">sessionmanager, session, </code><code class="java keyword">new</code> <code class="java plain">defaultsessionkey(session.getid())); </code>
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<code class="java spaces"> </code><code class="java plain">} </code><code class="java keyword">catch</code> <code class="java plain">(exception e) { </code>
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<code class="java spaces"> </code><code class="java comments">//ignore </code>
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<p>
其直接改造自executorservicesessionvalidationscheduler，如上代码是验证的核心代码，可以根据自己的需求改造此验证调度器器；ini的配置和之前的类似。</p>
<p>
如果在会话过期时不想删除过期的会话，可以通过如下ini配置进行设置：</p>
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java代码 </p>
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<code class="java plain">sessionmanager.deleteinvalidsessions=</code><code class="java keyword">false</code>
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<p>
默认是开启的，在会话过期后会调用sessiondao的delete方法删除会话：如会话时持久化存储的，可以调用此方法进行删除。 </p>
<p>
如果是在获取会话时验证了会话已过期，将抛出invalidsessionexception；因此需要捕获这个异常并跳转到相应的页面告诉用户会话已过期，让其重新登录，如可以在web.xml配置相应的错误页面：</p>
<p>
java代码 </p>
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<p>
<span><strong>sessionfactory</strong></span></p>
<p>
sessionfactory是创建会话的工厂，根据相应的subject上下文信息来创建会话；默认提供了simplesessionfactory用来创建simplesession会话。</p>
<p>
首先自定义一个session：</p>
<p>
java代码 </p>
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<code class="java keyword">public</code> <code class="java keyword">class</code> <code class="java plain">onlinesession </code><code class="java keyword">extends</code> <code class="java plain">simplesession { </code>
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<code class="java spaces"> </code><code class="java plain">on_line(</code><code class="java string">"在线"</code><code class="java plain">), hidden(</code><code class="java string">"隐身"</code><code class="java plain">), force_logout(</code><code class="java string">"强制退出"</code><code class="java plain">); </code>
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<code class="java spaces"> </code><code class="java keyword">private</code> <code class="java plain">string useragent; </code><code class="java comments">//用户浏览器类型 </code>
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<code class="java spaces"> </code><code class="java keyword">private</code> <code class="java plain">onlinestatus status = onlinestatus.on_line; </code><code class="java comments">//在线状态 </code>
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<code class="java spaces"> </code><code class="java keyword">private</code> <code class="java plain">string systemhost; </code><code class="java comments">//用户登录时系统ip </code>
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<p>
onlinesession用于保存当前登录用户的在线状态，支持如离线等状态的控制。</p>
<p>
接着自定义sessionfactory：</p>
<p>
java代码 </p>
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<code class="java keyword">public</code> <code class="java keyword">class</code> <code class="java plain">onlinesessionfactory </code><code class="java keyword">implements</code> <code class="java plain">sessionfactory { </code>
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<code class="java spaces"> </code>
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<code class="java spaces"> </code><code class="java color1">@override</code>
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<code class="java spaces"> </code><code class="java keyword">public</code> <code class="java plain">session createsession(sessioncontext initdata) { </code>
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<code class="java spaces"> </code><code class="java plain">onlinesession session = </code><code class="java keyword">new</code> <code class="java plain">onlinesession(); </code>
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<code class="java spaces"> </code><code class="java keyword">if</code> <code class="java plain">(initdata != </code><code class="java keyword">null</code> <code class="java plain">&& initdata </code><code class="java keyword">instanceof</code> <code class="java plain">websessioncontext) { </code>
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<code class="java spaces"> </code><code class="java plain">websessioncontext sessioncontext = (websessioncontext) initdata; </code>
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<code class="java spaces"> </code><code class="java plain">httpservletrequest request = (httpservletrequest) sessioncontext.getservletrequest(); </code>
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<code class="java spaces"> </code><code class="java keyword">if</code> <code class="java plain">(request != </code><code class="java keyword">null</code><code class="java plain">) { </code>
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<code class="java spaces"> </code><code class="java plain">session.sethost(iputils.getipaddr(request)); </code>
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<code class="java spaces"> </code><code class="java plain">session.setuseragent(request.getheader(</code><code class="java string">"user-agent"</code><code class="java plain">)); </code>
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<code class="java spaces"> </code><code class="java plain">session.setsystemhost(request.getlocaladdr() + </code><code class="java string">":"</code> <code class="java plain">+ request.getlocalport()); </code>
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<code class="java spaces"> </code><code class="java plain">} </code>
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<code class="java spaces"> </code><code class="java plain">} </code>
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<code class="java spaces"> </code><code class="java keyword">return</code> <code class="java plain">session; </code>
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<code class="java spaces"> </code><code class="java plain">} </code>
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<code class="java plain">}</code>
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<p>
根据会话上下文创建相应的onlinesession。 </p>
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最后在shiro-web.ini配置文件中配置：</p>
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java代码 </p>
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<code class="java plain">sessionfactory=org.apache.shiro.session.mgt.onlinesessionfactory </code>
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<code class="java plain">sessionmanager.sessionfactory=$sessionfactory</code>
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<span><strong> 总结</strong></span></p>
<p>
以上所述是小编给大家介绍的shiro会话管理，希望对大家有所帮助，如果大家有任何疑问请给我留言，小编会及时回复大家的。在此也非常感谢大家对网站的支持！</p>
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原文链接：http://blog.sina.com.cn/s/blog_9c6852670102wwb6.html</p>
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