apache-shiro杂记(一) 统计在线用户数目
org.apache.shiro.session.mgt.eis.SessionDAO接口就有此功能，不过配置shiro的时候，最好在容器上下文中指定SessionDAO bean的名字以方便直接注入到业务bean
package org.apache.shiro.session.mgt.eis;
import org.apache.shiro.session.Session;
import org.apache.shiro.session.UnknownSessionException;
import java.io.Serializable;
import java.util.Collection;
public interface SessionDAO {
Serializable create(Session session);
Session readSession(Serializable sessionId) throws UnknownSessionException;
void update(Session session) throws UnknownSessionException;
void delete(Session session);
Collection<Session> getActiveSessions();// 就是这个方法
}
<bean id="sessionManager" class="org.apache.shiro.web.session.mgt.DefaultWebSessionManager">
<property name="sessionDAO" ref="sessionDAO" />
</bean>
<bean id="sessionDAO" class="org.apache.shiro.session.mgt.eis.MemorySessionDAO" />
<bean id="securityManager" class="org.apache.shiro.web.mgt.DefaultWebSecurityManager">
<property name="authenticator" ref="authenticator" />
<property name="sessionManager" ref="sessionManager" />
<property name="cacheManager" ref="cacheManager" />
<property name="realms">
<list>
<bean class="com.ztgame.sd.security.realm.JdbcRealm">
<property name="userDao" ref="userDao" />
<property name="credentialsMatcher" ref="hashedCredentialsMatcher" />
</bean>
</list>
</property>
</bean>
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