reserve.java

基于java的医院门诊管理系统

package crqs.servlets.client;

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

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.Patient;
import crqs.exceptions.RecordsNotExistException;
import crqs.util.DateConvert;
import crqs.util.NavBar;
import crqs.util.StringConvert;

public class Reserve 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 hs = request.getSession();
		Patient pat = (Patient) hs.getAttribute("validUser");
		String message = null;
		Date date = DateConvert.parse(request.getParameter("date"));
		String docID = request.getParameter("docID");
		NavBar nb=(NavBar)hs.getAttribute("navbar");
		try {
			String s = pat.reserve(docID, date);
			if (s.equals("r"))
				message = "请勿重复预约!";
			else if (s.equals("n"))
				message = "该医生不提供预约!";
			else if (s.equals("f"))
				message = "该医生预约已满!";
			else
				message = "预约成功!您的预约号是"+s;
		} catch (RecordsNotExistException e) {
			message = "预约号生成出错!";
		} catch (SQLException e) {
			message = "数据库出错!";
		}
		hs.setAttribute("message", message);
		hs.setAttribute("url", nb.generate());
		response.sendRedirect(response.encodeRedirectURL("/CRQS/message.jsp"));
	}
}