searchreservation.java

基于java的医院门诊管理系统

package crqs.servlets.checker;

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

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

import crqs.dboperation.Checker;
import crqs.exceptions.RecordsNotExistException;
import crqs.infobeans.Reservation;

public class SearchReservation 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 {

		doPost(request, response);
	}

	/**
	 * 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 {

		HttpSession session = request.getSession();
		String message = null;
		String from = "checkermain.jsp";
		Checker ckr=(Checker)session.getAttribute("validUser");
		String resNo=request.getParameter("resNO").trim();
		Reservation res=null;
		try{
			res=ckr.getReservation(resNo);
			request.setAttribute("result", res);
			request.setAttribute("count", new Integer(1));
			request.setAttribute("display", "y");
			request.getRequestDispatcher(from).forward(request, response);
			return;
		}catch (RecordsNotExistException e) {
			request.setAttribute("count", new Integer(0));
			request.setAttribute("display", "y");
			request.getRequestDispatcher(from).forward(request, response);
			return;
		}catch (SQLException e) {
			message = "数据库出错!";
		}
		session.setAttribute("message", message);
		session.setAttribute("url", "/CRQS/checker/checkermain.jsp");
		response.sendRedirect(response.encodeRedirectURL("/CRQS/message.jsp"));
	}

}