📄 checklogin.java

📁 一个毕业设计网络招标系统实现了招标的业务逻辑内含了数据库sql server备份文件
💻 JAVA
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package com.Servlet;

import java.io.IOException;
import javax.servlet.http.HttpSession;
import java.io.PrintWriter;
import java.text.SimpleDateFormat;
import java.util.*;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import com.BO.*;

public class checkLogin extends HttpServlet {

	/**
	 * The doGet method of the servlet. <br>
	 * 
	 * This method is called when a form has its tag value method equals to get.
	 * 
	 * @param request
	 *            the request send by the client to the server
	 * @param response
	 *            the response send by the server to the client
	 * @throws ServletException
	 *             if an error occurred
	 * @throws IOException
	 *             if an error occurred
	 */
	public void doGet(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		HttpSession session = request.getSession();
		userBO bo = new userBO();
		Date date = new Date();
		SimpleDateFormat date1 = new SimpleDateFormat("yyyy-MM-dd");
		String ZCCJtime = date1.format(date);
		String userName = request.getParameter("userName").trim();
		String userPass = request.getParameter("userPass").trim();

		if (bo.rootUser(userName, userPass)) {
			session.setAttribute("userName", userName);
			response.sendRedirect("../guanli_index.jsp");
		} else {
			int i = bo.userLogin(userName, userPass);
			
			if (i == 1) {
				bo.updateTime(userName, ZCCJtime);
				session.setAttribute("userName", userName);
			System.out.print("qqqqqqqq.");
				response.sendRedirect("../index1.jsp");
			} else {
				if (i == 2) {
					response.sendRedirect("../fail.jsp");
				} else {
					if (i == 3) {
						response.sendRedirect("../fail.jsp");
					} else {
						if (i == 4) {
							response.sendRedirect("../fail.jsp");
						}
					}
				}
			}
		}
	}

	/**
	 * The doPost method of the servlet. <br>
	 * 
	 * This method is called when a form has its tag value method equals to
	 * post.
	 * 
	 * @param request
	 *            the request send by the client to the server
	 * @param response
	 *            the response send by the server to the client
	 * @throws ServletException
	 *             if an error occurred
	 * @throws IOException
	 *             if an error occurred
	 */
	public void doPost(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {

		response.setContentType("text/html");
		PrintWriter out = response.getWriter();
		out
				.println("<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01 Transitional//EN\">");
		out.println("<HTML>");
		out.println("  <HEAD><TITLE>A Servlet</TITLE></HEAD>");
		out.println("  <BODY>");
		out.print("    This is ");
		out.print(this.getClass());
		out.println(", using the POST method");
		out.println("  </BODY>");
		out.println("</HTML>");
		out.flush();
		out.close();
	}

}
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