loginaction.java

一个基于struts框架开发的论坛系统,适合学习

package frm;

import java.sql.Connection;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

import org.apache.struts.action.*;

public class LoginAction extends Action {
	
	public ActionForward perform(ActionMapping map,ActionForm form,
			HttpServletRequest request,HttpServletResponse response){
		DynaActionForm f=(DynaActionForm)form;
		String account=(String)f.get("account");
        String passwd=(String)f.get("passwd");
         
		boolean b=false; 
		Connection con=null;
		User u=null; 
		try{
			con=DataConnection.getConnection(); 
			u=DbUser.getUser(con, account);
			if(passwd.equals(u.getPasswd())){
				(request.getSession()).setAttribute("user",u);
				DbUser.updateLastDate(con,account);
				b=true;
			}else{
				u=null;
			}
		}catch(Exception e){
			b=false;
			e.printStackTrace();
		}finally{
			if(con!=null){
				try{
					con.close();
				}catch(Exception e){}
			}
		}
		if(u==null || !b){
			System.out.println("失败：登录同时发贴界面!"); 		
			return (map.findForward("fail"));
		}		 
		System.out.println("登录成功!"); 
		return (map.findForward("sucess"));
	}

}