loginaction.java

一本jsp自学教材

package user;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import org.apache.struts.action.Action;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
import org.apache.struts.action.ActionMessage;
import org.apache.struts.action.ActionMessages;
public class LoginAction extends Action {
public ActionForward execute(
ActionMapping mapping,
ActionForm form,
HttpServletRequest request,
HttpServletResponse response)
throws Exception {
  LoginForm tform=(LoginForm)form;
  String user=tform.getUsername();
  String admin="caxton";
  String ip=request.getRemoteAddr();
  HttpSession session=request.getSession();
  ActionMessage message=new ActionMessage("message.ip");
  ActionMessages messages=new ActionMessages();
  messages.add(ActionMessages.GLOBAL_MESSAGE,message);
  saveMessages(request, messages); 
  UserLog ul=new UserLog();
  String info="UserName:"+user+"->IP:"+ip;
  String path=request.getRealPath("/")+"userlog.txt";
  ul.Ulog(info,path);
  if(user.equals(admin))
  {
    String mess="Hello!Administrator.";
    mess=new String(mess.getBytes("ISO-8859-1"));
    session.setAttribute("mess",mess);
  }
  else{
    String mess="Hello，User！";
    session.setAttribute("mess",mess);
  }
  return mapping.findForward("success");
 }
}