public async Task<JsonResult> Signup(SignupViewModel model) {
			if(Session["SMSCode"].ToString() != model.Code) {
				return Json(new JsonErrorObj("验证码不正确", "code"));
			}
			using(MrCyContext ctx = new MrCyContext()) {
				ClientInfo client = new ClientInfo() {
					ClientId = (DateTime.Now.Year%100).ToString() + model.Mobile,
					ClientName = model.Mobile,
					LoginName = model.Mobile,
					LoginPwd = model.Password
				};
				ctx.ClientInfo.Add(client);
				await ctx.SaveChangesAsync();
				FormSignin(client);
				return Json(new JsonSucceedObj());
			}
		}
		private void FormSignin(ClientInfo c) {
			FormsAuthenticationTicket ticket = new FormsAuthenticationTicket(c.ClientId, true, 60);
			string authTicket = FormsAuthentication.Encrypt(ticket);
			HttpCookie cookie = new HttpCookie(FormsAuthentication.FormsCookieName) {
				Value = authTicket,
				Expires = DateTime.Now.AddDays(1)
			};
			Response.SetCookie(cookie);
		}