0001Java程序设计-SSM校园快递系统的设计与实现

private void login() throws ServletException, IOException {
    String username = request.getParameter("username");
    String password = request.getParameter("password");
    String code = (String) session.getAttribute(com.google.code.kaptcha.Constants.KAPTCHA_SESSION_KEY);
    String reqCode = request.getParameter("checkcode");
    if (reqCode == null || !reqCode.equalsIgnoreCase(code)) {
      session.setAttribute("loginErrorMessage", "验证码错误");
      response.sendRedirect("index.jsp");
      return;
    }
    User user = null;
    try {
      password = LsdUtils.getMd5String(password);
      user = dao.findUser(username, password);
    } catch (Exception e) {
      e.printStackTrace();
    }
    if (user != null) {
      session.setAttribute("SessionUser", user);
      response.sendRedirect("main.jsp");
      return;
    } else {
      session.setAttribute("loginErrorMessage", "用户名或者密码错误");
      response.sendRedirect("index.jsp");
      return;
    }
  }

@SuppressWarnings({ "unchecked", "rawtypes" })
   **private** **void** userAdd() **throws** ServletException, IOException {
​       Map map = **new** HashMap();
​       **try** {
​           map.put("loginId", request.getParameter("loginId"));
​           map.put("password", LsdUtils.*getMd5String*(request.getParameter("password")));
​           map.put("name", request.getParameter("name"));
​           map.put("userRole", request.getParameter("userRole"));
​           dao.save(User.**class**, map);
​           MessageUtil.*addMessage*(request, "成功");
​           f("/success.jsp");
​           **return**;
​       } **catch** (Exception e) {
​           e.printStackTrace();
​           MessageUtil.*addMessage*(request, "操作失败,账号重复");
​           f("/error.jsp");
​           **return**;
​       }
   }

@SuppressWarnings({ "unchecked", "rawtypes" })
   **private** **void** expressAdd() **throws** ServletException, IOException {
​       Map map = **new** HashMap();
​       **try** {
​           map.put("phone", request.getParameter("phone"));
​           map.put("name", request.getParameter("name"));
​           map.put("area", request.getParameter("area"));
​           map.put("sid", request.getParameter("sid"));
​           map.put("status", "未签收");
​           Express e = (Express) hdao.unique("from Express where sid=?", map.get("sid"));
​           **if** (e != **null**) {
​               MessageUtil.*addMessage*(request, "操作失败,快递单号重复");
​               f("/error.jsp");
​               **return**;
​           }
​           dao.save(Express.**class**, map);
​           MessageUtil.*addMessage*(request, "成功");
​           f("/success.jsp");
​           **return**;
​       } **catch** (Exception e) {
​           e.printStackTrace();
​           MessageUtil.*addMessage*(request, "操作失败");
​           f("/error.jsp");
​           **return**;
​       }
​    }