JSP在线人员列表实现
使用HttpSessionBindingListener接口
要求显示登陆人的IP,登陆时间,所在页面等信息


具体实现如下:
Struts-config.xml
 <action-mappings>
  <!-- huangyaocan permission change -->
  <action attribute="loginForm2" path="/loginAction2" input="/index.jsp" parameter="method" type="com.gsta.umcc.console.login.action.LoginAction" name="loginForm2" scope="request" validate="false">
  <forward name="success" path="/login.jsp"/>
  <forward name="failure" path="/index.jsp"/>
  <forward name="logout" path="/index.jsp"/>
  <forward name="logoutClose" path="/logout.jsp"/>
  </action>
<action-mappings>
web.xml
<listener-class>com.gsta.umcc.console.login.OnlineUserSessionListener
</listener-class>
OnlineUserSessionListener.java
 public void valueBound(HttpSessionBindingEvent event) {
  // TODO Auto-generated method stub
  HttpSession session = event.getSession (); 
  ServletContext ctx = session.getServletContext (); 
  Map map = (Map)ctx.getAttribute ("userName"); 
  if (map == null) { // 如果是服务器启动后的第一个登录用户，新建一个容器 
  map = new HashMap(); 
  ctx.setAttribute ("userName", map);
  }
  map.put(userName, this); // 把自己加入容器中  
 }

 /*
  * (non-Javadoc)
  * 
  * @see javax.servlet.http.HttpSessionListener#sessionDestroyed(javax.servlet.http.HttpSessionEvent)
  */

 public void valueUnbound(HttpSessionBindingEvent event) {
  // TODO Auto-generated method stub
  System.out.println("valueUnbound:"+this.userSessionID);
  AuthorizationMap.removeUserAuthorizationException(this.userSessionID);
  HttpSession session = event.getSession (); 
  ServletContext ctx = session.getServletContext (); 
  Map map = (Map)ctx.getAttribute ("userName"); 
  map.remove (this); // 把自己从容器中删除 
  } 

public class OnlineUser {
 private ScmLogin scmLogin = null ;
 private static List list=new ArrayList(); //用来存放在线用户列表 
 
 /**
  * Returns the scmLogin.
  * @return ScmLogin
  */
 public ScmLogin getScmLogin() {
  return scmLogin;
 }

 /**
  * Sets the scmLogin.
  * @param scmLogin The scmLogin to set
  */
 public void setScmLogin(ScmLogin scmLogin) {
  this.scmLogin = scmLogin;
 }
 
  public void updateOnline(){
  list.add(this.scmLogin);
 }
 
 public void updateUnline(){
  list.remove(this.scmLogin);
 }
 
 public static List getList(){ 
  return list; 
 } 
}

将在线用户信息放在一个static的list中。
此处还用到一个用户的基类ScmLogin，
public class ScmLogin {
  private String UserID;
  private String RealName;
  private Integer OrgID;
  private String OrgName;
  private String OrgCode; //add by starrain.tian 2003.12.17
  private java.sql.Timestamp loginTime; //add by starrain.tian 2004.11.10
  private String ip;
  .....
  setXX,getXX.....
}

求JSP和action的写法,如果能Q我教我就最好了..谢谢先

------解决方案--------------------

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