addcusinfo.java

酒店管理系统

package servlet;

import database.*;

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

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import database.*;

public class AddCusInfo extends HttpServlet {

	/**
	 * Constructor of the object.
	 */
	public AddCusInfo() {
		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;charset=gbk");
		PrintWriter out = response.getWriter();
		String id = request.getParameter("identifier");
		String state = request.getParameter("state");
		
		if(id == ""){
		   out.print("The identifierID cann't be null!");
		   out.println("<meta http-equiv='refresh' content='1 url=/hotel/customerInfoAdd.jsp'>");
		}
		try{
			connectDB con = new connectDB();
			String sql = "select * from customer where identifierID = '"+id+"'";
			con.excuteQuery(sql);
			if(!con.next()){
				out.print("该客户不存在");
				out.println("<meta http-equiv='refresh' content='1 url=/hotel/customerInfoAdd.jsp'>");
			}
		}catch(Exception e){
			e.printStackTrace();
		}
		if (state.equals("0")){
			try{
				
				connectDB con = new connectDB();
				String sql1 = "update customerInfo set VIP = '是' where identifierID = '"+id+"'";			 
				con.excuteUpdate(sql1);	
				out.println("<center>");
				out.println("更改成功！");
				out.println("服务器将自动跳转到前页");
				out.println("<br>");
				out.println("<a href='/hotel/customerInfoAdd.jsp'>");
				out.println("如果没有跳转，请点击这里！");
				out.println("</a>");
				out.println("<meta http-equiv='refresh' content='1 url=/hotel/customerInfoAdd.jsp'>");		
			}catch(Exception e){
				e.printStackTrace();
			}
		}
		
			else if(state.equals("1"))
			{
				try{
					connectDB con = new connectDB();
					String sql2 = "update customerInfo set unWelcome = '是' where identifierID = '"+id+"'";; 			 
					con.excuteUpdate(sql2);	
					out.println("<center>");
					out.println("更改成功！");
					out.println("服务器将自动跳转到前页");
					out.println("<br>");
					out.println("<a href='/hotel/customerInfoAdd.jsp'>");
					out.println("如果没有跳转，请点击这里！");
					out.println("</a>");
					out.println("<meta http-equiv='refresh' content='1 url=/hotel/customerInfoAdd.jsp'>");		
				}catch(Exception e){
					e.printStackTrace();
			}
		}
	}
	

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

}