servletteacher.java

在线教育平台： 从小学

			teachers.setIdcard(idcard);
			teachers.setMobile(mobile);
			teachers.setAge(age);
			teachers.setSex(sex);
			teachers.setAddress(address);
			teachers.setEmail(email);
			teachers.setAsk(ask);
			teachers.setAnswer(answer);
			if (ask == null || ask.equals("") || answer == null
					|| answer.equals(""))
				teachers.updateTeachers();
			if (ask != null && !ask.equals("") && answer != null
					&& !answer.equals(""))
				teachers.updateTeachersask();
		}
		return teachers;
	}

	public TeacherBean doUpdate_ad(HttpServletRequest req,
			HttpServletResponse res, int id) throws ServletException,
			IOException, SQLException {
		TeacherBean teachers = new TeacherBean();
		Md5Bean md5 = new Md5Bean();

		String pswss = req.getParameter("pswss");
		String psw = req.getParameter("psw");
		String age = new String(req.getParameter("age").getBytes("ISO8859_1"));
		String sex = new String(req.getParameter("sex").getBytes("ISO8859_1"));
		int class_id = Integer.parseInt(req.getParameter("class_id"));
		int grade_id = Integer.parseInt(req.getParameter("grade_id"));
		int subject_id = Integer.parseInt(req.getParameter("subject_id"));
		String idcard = new String(req.getParameter("idcard").getBytes(
				"ISO8859_1"));
		String mobile = new String(req.getParameter("mobile").getBytes(
				"ISO8859_1"));
		String address = new String(req.getParameter("address").getBytes(
				"ISO8859_1"));
		String email = new String(req.getParameter("email").getBytes(
				"ISO8859_1"));
		String ask = new String(req.getParameter("ask").getBytes("ISO8859_1"));
		String answer = new String(req.getParameter("answer").getBytes(
				"ISO8859_1"));
		if (pswss.equalsIgnoreCase(psw)) {
			teachers.setId(id);
			psw = md5.getMD5ofStr(psw);
			teachers.setPsw(psw);
			teachers.setClass_id(class_id);
			teachers.setGrade_id(grade_id);
			teachers.setSubject_id(subject_id);
			teachers.setIdcard(idcard);
			teachers.setMobile(mobile);
			teachers.setAge(age);
			teachers.setSex(sex);
			teachers.setAddress(address);
			teachers.setEmail(email);
			teachers.setAsk(ask);
			teachers.setAnswer(answer);
			if (ask == null || ask.equals("") || answer == null
					|| answer.equals("")) {
				if (!psw.equals("") && !psw.equals(null))
					teachers.updateTeachers();
				else
					teachers.updateTeachers_ad();
			}

			if (ask != null && !ask.equals("") && answer != null
					&& !answer.equals("")) {
				if (!psw.equals("") && !psw.equals(null))
					teachers.updateTeachersask();
				else
					teachers.updateTeachersask_ad();
			}
		}
		return teachers;
	}

	public TeacherBean doPsw(HttpServletRequest req, HttpServletResponse res)
			throws ServletException, IOException, SQLException {
		TeacherBean teachers = new TeacherBean();
		Md5Bean md5 = new Md5Bean();
		String name = new String(req.getParameter("username").getBytes(
				"ISO8859_1"));
		String ask = new String(req.getParameter("ask").getBytes("ISO8859_1"));
		String answer = new String(req.getParameter("answer").getBytes(
				"ISO8859_1"));
		String psw = req.getParameter("psw");
		String pswss = req.getParameter("pswss");
		teachers.setTeacher(name);
		teachers.setAsk(ask);
		teachers.setAnswer(answer);
		psw = md5.getMD5ofStr(psw);
		if (teachers.isfromname() && isTrue(req, res, pswss, psw)) {
			teachers.setPsw(psw);
			teachers.updatePsw();
			sendBean(req, res, teachers, "/ok.jsp");
		} else
			doError(req, res, "帐号不存在或密码问题回答错误!");
		return teachers;

	}

	public TeacherBean doPsw1(HttpServletRequest req, HttpServletResponse res)
			throws ServletException, IOException, SQLException {
		TeacherBean teachers = new TeacherBean();
		HttpSession session = req.getSession(true);
		String name = new String(req.getParameter("username").getBytes(
				"ISO8859_1"));
		if (!teachers.hasLogin(name)) {
			String ask = "";
			// int u_id = 0;
			try {
				// u_id = user.idfromname(name);
				ask = teachers.askfromname(name);
			} catch (SQLException e) {
			}
			// session.setAttribute("userid", String.valueOf(u_id));
			session.setAttribute("namepsw", String.valueOf(name));
			session.setAttribute("ask", String.valueOf(ask));
			session.setAttribute("sortpsw", "teacher");

			sendBean(req, res, teachers, "/backps2.jsp");
		} else
			doError(req, res, "帐号不存在!");
		return teachers;

	}

	public TeacherBean doPsw2(HttpServletRequest req, HttpServletResponse res)
			throws ServletException, IOException, SQLException {
		TeacherBean teachers = new TeacherBean();
		HttpSession session = req.getSession(true);
		String name = session.getAttribute("namepsw").toString();

		String answer = new String(req.getParameter("answer").getBytes(
				"ISO8859_1"));

		if (answer.equals(teachers.answerfromname(name))) {

			sendBean(req, res, teachers, "/backps3.jsp");
		} else
			doError(req, res, "密码问题回答错误!");
		return teachers;

	}

	public TeacherBean doPsw3(HttpServletRequest req, HttpServletResponse res)
			throws ServletException, IOException, SQLException {
		TeacherBean teachers = new TeacherBean();
		Md5Bean md5 = new Md5Bean();
		HttpSession session = req.getSession(true);
		String name = new String(req.getParameter("name").getBytes("ISO8859_1"));

		String psw = req.getParameter("psw");
		String pswss = req.getParameter("pswss");
		teachers.setTeacher(name);
		if (isTrue(req, res, pswss, psw)) {
			psw = md5.getMD5ofStr(psw);

			teachers.setPsw(psw);
			teachers.updatePsw();
			int u_id = 0;
			try {
				u_id = teachers.idfromname(name);

			} catch (SQLException e) {
			}
			session.setAttribute("sort", session.getAttribute("sortpsw")
					.toString());
			session.setAttribute("userid", String.valueOf(u_id));
			session.setAttribute("name", String.valueOf(name));
			sendBean(req, res, teachers, "/ok.jsp");
		} else
			doError(req, res, "出错了!");
		return teachers;

	}

	public int doDelete(int id) throws SQLException {
		int num = 0;
		TeacherBean teachers = new TeacherBean();
		num = teachers.deleteTeachers(id);
		return num;
	}

	public void sendBean(HttpServletRequest req, HttpServletResponse res,
			TeacherBean teachers, String target) throws ServletException,
			IOException {
		req.setAttribute("teacher", teachers);
		try {
			RequestDispatcher rd = req.getRequestDispatcher(target);
			rd.forward(req, res);
		} catch (Throwable t) {
		}
	}

	public void doError(HttpServletRequest req, HttpServletResponse res,
			String str) throws ServletException, IOException {

		req.setAttribute("problem", str);
		try {
			RequestDispatcher rd = req.getRequestDispatcher("/errorpage.jsp");
			rd.forward(req, res);
		} catch (Throwable t) {

		}

	}

	public void doError_ad(HttpServletRequest req, HttpServletResponse res,
			String str) throws ServletException, IOException {

		req.setAttribute("problem", str);
		try {
			RequestDispatcher rd = req
					.getRequestDispatcher("/errorpage_ad.jsp");
			rd.forward(req, res);
		} catch (Throwable t) {

		}

	}

	public boolean hasLogin(HttpServletRequest req, HttpServletResponse res,
			String teacher) throws ServletException, IOException {
		boolean f = true;
		String message = "对不起，该帐号已经被注册过了!";
		TeacherBean teachers = new TeacherBean();
		f = teachers.hasLogin(teacher);
		if (f == false) {
			doError(req, res, message);
		}
		return f;
	}

	public boolean isTrue(HttpServletRequest req, HttpServletResponse res,
			String pswss, String psw) throws ServletException, IOException {
		boolean f = true;
		String message = "";

		if (psw == null || psw.equals("")) {
			f = false;
			message = "密码不能为空，请重新填写！";
			doError(req, res, message);
		}

		if (pswss.equals("") != psw.equals("")) {
			f = false;
			message = "两密码不匹配，请重新填写！";
			doError(req, res, message);
		}

		return f;

	}

	public boolean isTrue(HttpServletRequest req, HttpServletResponse res,
			String teacher) throws ServletException, IOException {
		boolean f = true;
		String message = "";

		if (teacher == null || teacher.equals("")) {
			f = false;
			message = "帐号不能为空，请重新填写！";
			doError(req, res, message);
		}

		return f;

	}

	public boolean ask_answer(HttpServletRequest req, HttpServletResponse res,
			int id, String oanswer) throws ServletException, IOException,
			SQLException {
		boolean f = true;
		String message = "";
		String answer = "";
		if (oanswer == null || oanswer.equals("")) {
			f = false;
			message = "回答不能为空，请重新填写！";
			doError(req, res, message);
		} else {
			TeacherBean teachers = new TeacherBean();
			ResultSet rs = teachers.getTeachers(id);
			if (rs.next()) {
				answer = rs.getString("t_answer");
			}
			if (oanswer.equals(answer)) {
				f = true;
			} else {
				f = false;
				message = "密码问题回答错误，不能修改资料！";
				doError(req, res, message);
			}
		}
		return f;
	}

	public void doPost(HttpServletRequest req, HttpServletResponse res)
			throws ServletException, IOException {

		doGet(req, res);

	}

}