public void doPost(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		request.setCharacterEncoding("GBK");
		String pages = "../../../errors.jsp";
		String status = request.getParameter("status");
		if (!(status == null || "".equals(status))) {
			if ("list".equals(status)) {
				this.list(request, response);
			}
			if ("insertpre".equals(status)) {
				this.insertpre(request, response);
			}
			if ("insert".equals(status)) {
				this.insert(request, response);
			}
			if ("show".equals(status)) {
				this.show(request, response);
			}
			if ("updatepre".equals(status)) {
				this.updatepre(request, response);
			}
			if ("update".equals(status)) {
				this.update(request, response);
			}
			if ("delete".equals(status)) {
				this.delete(request, response);
			}
		} else {
			request.getRequestDispatcher(pages).forward(request, response);
		}
	}