modifypassword.java

基于java的医院门诊管理系统

package crqs.servlets;

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.Administrator;
import crqs.dboperation.Checker;
import crqs.dboperation.DBOperation;
import crqs.dboperation.Doctor;
import crqs.dboperation.Patient;
import crqs.exceptions.RecordsNotExistException;

public class ModifyPassword 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 {

		String old = request.getParameter("oldPasswd").trim();
		String np = request.getParameter("newPasswd").trim();
		String from = request.getParameter("from");
		HttpSession hs = request.getSession();
		String message = null;
		DBOperation dbopt = (DBOperation) hs.getAttribute("validUser");
		try {
			if (dbopt.setPassword(old, np))
				message = "密码修改成功!";
			else
				message = "旧密码不正确,请重试!";

		} catch (SQLException e) {
			message = "数据库出错,操作失败!";
		}
		hs.setAttribute("message", message);
		hs.setAttribute("url", from);
		response.sendRedirect(response.encodeRedirectURL("/CRQS/message.jsp"));
	}

}