Java清除session的方法

第一种方法(继承SessionAware类来取得session,然后用invalidate()方法清理)
  public class ExitAction extends ActionSupport implements SessionAware{

@Override

public String execute() throws Exception {

HttpServletRequest request = ServletActionContext.getRequest();

HttpSession session1 = request.getSession();

session1.invalidate();

return super .execute();

}


public void setSession(Map arg0) {



}


}


//第二种方法（用ActionContext取session,然后用clear()方法清理）
   public class ExitAction extends ActionSupport{


@Override

public String execute() throws Exception {

ActionContext ac = ActionContext.getContext();

Map session = ac.getSession();

session.remove( "buser" );

session.remove( "guser" );

session.remove( "fuser" );

return super .execute();

}


}