public async Task <IHttpActionResult> ExistsEmail(string email) { JsonResult <bool> result = new JsonResult <bool>(); if (!email.IsEmail()) { result.code = 0; result.msg = "邮箱格式不正确"; return(Ok(result)); } result.code = 1; result.msg = "OK"; result.Result = await Task.Run <bool>(() => { bool flag = false; UserInfoBll userbll = new UserInfoBll(); flag = userbll.ExistsEmail(email); return(flag); }); return(Ok(result)); }