loginaction.java

Spring2.0宝典

package lee;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.springframework.web.struts.ActionSupport;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionMapping;
import org.apache.struts.action.ActionForward;


/**
 * @author  yeeku.H.lee [e-mail]
 * @version  1.0
 * <br>Copyright (C), 2005-2008, yeeku.H.Lee
 * <br>This program is protected by copyright laws.
 * <br>Program Name:
 * <br>Date: 
 */
public class LoginAction extends ActionSupport 
{
	private ValidBean vb;
	public LoginAction()
	{
		System.out.println("------------");
	}
	public void setVb()
	{
		vb = (ValidBean)getWebApplicationContext().getBean("vb");
	}
    public ActionForward execute(ActionMapping mapping, ActionForm form,
       HttpServletRequest request, HttpServletResponse response)throws Exception
    {
		LoginForm loginForm = (LoginForm)form;
		String username = loginForm.getUsername();
		String pass = loginForm.getPass();
		setVb();
		String errMsg = "";
		if (username == null || username.equals(""))
		{
			errMsg += "您的用户名丢失或没有输入，请重新输入";
		}
		else if(pass == null || pass.equals(""))
		{
			errMsg += "您的密码丢失或没有输入，请重新输入";
		}
		else
		{
			if (vb.valid(username,pass))
			{
				return mapping.findForward("welcome");
			}
			else
			{
				errMsg = "您的用户名和密码不匹配";
			}
		}

		if (errMsg != null && !errMsg.equals(""))
		{
			request.setAttribute("err" , errMsg);
			return mapping.findForward("input");
		}
		else
		{
			return mapping.findForward("welcome");
		}
    }
}