logsystem.java

这是一个很好用的软件

package oa.servlet;

import java.io.IOException;
import java.io.PrintWriter;
import java.sql.*;

import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import oa.main.*;


public class logSystem extends HttpServlet {
	/**
	 * Destruction of the servlet. <br>
	 */
	public void destroy() {
		super.destroy(); // Just puts "destroy" string in log
		// Put your code here
	}

	/**
	 * The doGet method of the servlet. <br>
	 */
	public void doGet(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		  doPost(request,response);

		
	}

	/**
	 * The doPost method of the servlet. <br>
     */
	public void doPost(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		try {
			String userid=(String)request.getParameter("userid");
			String password=(String)request.getParameter("password");
			String  sql="";
			System.out.println(userid  +"     "+password);
			sql="select * from news.userb where USERID='"+userid+"' and PASSWORD='"+password+"'";
			ResultSet rs=new ParentBean().selectRecord(sql);
			if(rs.next()){
				RequestDispatcher rd=request.getRequestDispatcher("../manage/manager.jsp");
			    rd.forward(request,response);
			}
			else 
			{ PrintWriter ps=response.getWriter();
			  String alert="<script> alert('userid or password err!'); window.openner=null;window.close();</script>";
			  ps.print(alert);
			 //RequestDispatcher rd=request.getRequestDispatcher("../main/index.jsp");
			 // rd.forward(request,response);
				}
		} catch (Exception e) {
			new ServletException(e.getMessage());
		}

	}


}