login.java

这是一个网上书站的例子

/*
 * Generated by MyEclipse Struts
 * Template path: templates/java/JavaClass.vtl
 */
package com.zxf.struts.login;

import java.io.IOException;

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 com.db.Jdo;

/** 
 * MyEclipse Struts
 * Creation date: 01-06-2008
 * 
 * XDoclet definition:
 * @struts.action path="/login" name="loginForm" scope="request" validate="true"
 */
public class Login extends Action {
	/*
	 * Generated Methods
	 */

	/** 
	 * Method execute
	 * @param mapping
	 * @param form
	 * @param request
	 * @param response
	 * @return ActionForward
	 */
	public ActionForward execute(ActionMapping mapping, ActionForm form,
			HttpServletRequest request, HttpServletResponse response) {
		LoginForm loginForm = (LoginForm) form;// TODO Auto-generated method stub
		String username=(String)loginForm.getUsername();
		String password=(String)loginForm.getPassword();
		Jdo jdo=new Jdo();
		int count=jdo.rowCount("select count(*) from admin where adminname='"+username+"' and password='"+password+"'");
		if(count>=1)
		{
			HttpSession ses=request.getSession();
			ses.setAttribute("validate", "1");
			ses.setAttribute("adminname", username);
			jdo.destroy();
			try {
				response.sendRedirect("manage/main.jsp");
			} catch (IOException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
			return null;
		}
		else
		{
			jdo.destroy();
			return mapping.findForward("faillogin");
		}
		
	}
}