custominput.java

酒店管理系统

package servlet;

import java.io.IOException;
import java.io.PrintWriter;

import javabean.Customer;

import javax.servlet.ServletException;
import javax.servlet.http.*;

import database.connectDB;

public class CustomInput extends HttpServlet {

	/**
	 * Constructor of the object.
	 */
	public CustomInput() {
		super();
	}

	/**
	 * 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>
	 *
	 * 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 {

	}

	/**
	 * 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");
		HttpSession session = request.getSession();
		String identifierID = request.getParameter("identifierID");
		if(identifierID.equals("")){
			response.sendRedirect("/hotel/customer_input.jsp?errMsg=Please enter the identifierID!");
		}
		try{
			connectDB con = new connectDB();
			String sql = "select * from customer where identifierID= '" + identifierID + "'";
			con.excuteQuery(sql);
			if(con.next()){
			Customer customer = new Customer(con.getString(1),con.getString(2),con.getString(3),con.getString(4),
					con.getString(5),con.getString(6),con.getString(7),con.getInt(8));
			session.setAttribute("customer", customer);
			
			response.sendRedirect("/hotel/room_list.jsp");
			}else
				response.sendRedirect("/hotel/customer_input.jsp?errMsg=The identifierID is not exist!");
		}catch(Exception e){
			e.printStackTrace();
		} 
		
		PrintWriter out = response.getWriter();
		
		out.flush();
		out.close();
	}

	/**
	 * Initialization of the servlet. <br>
	 *
	 * @throws ServletException if an error occure
	 */
	public void init() throws ServletException {
		// Put your code here
	}

}