modifyroomprice.java

酒店管理系统

package servlet;

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

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

import database.connectDB;

public class ModifyRoomPrice extends HttpServlet {

	/**
	 * Constructor of the object.
	 */
	public ModifyRoomPrice() {
		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 roomIDD  =request.getParameter("roomID");
		String roomPricee  =request.getParameter("roomPrice");
		if(roomIDD ==""){
			   out.print("房间号不能为空!");
			}else if(roomPricee =="")
				out.print("房间价格不能为空！");
			else
		{
		int roomID = Integer.parseInt(request.getParameter("roomID"));
		int roomPrice = Integer.parseInt(request.getParameter("roomPrice"));
		
		
		
		try{
			connectDB con = new connectDB();
			String sql = "update room set roomPrice="+roomPrice+" where roomID = "+roomID;
			con.excuteUpdate(sql);
		}catch(Exception e){
			e.printStackTrace();
		}
			
				out.print("<br>");
				out.print("<br>");
				out.print("<br>");
				out.println("<center>");
				out.println("更改成功！");
			}
				out.print("<br>");
				out.print("<br>");
				out.println("服务器将自动跳转到前页");
				out.println("<br>");
				out.println("<a href='/hotel/modifyRoomprice.jsp'>");
				out.println("如果没有跳转，请点击这里！");
				out.println("</a>");
				out.println("<meta http-equiv='refresh' content='3 url=/hotel/modifyRoomprice.jsp'>");

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

}