OnlyOffice文件回调接口net core 版本

public class OfficeFilesController : BaseController//Controller
{

/// <summary>
        /// 保存OnlyOffice文件
        /// </summary>
        [HttpPost]
        public void SaveOnlyOfficeFile()
        {
            var fileDataJson = string.Empty;
            var method = "SaveOnlyOfficeFile";
            bool isSucceed = false;
            string search1 = string.Empty;
            string search2 = string.Empty;
            string status = string.Empty;
            var ip = CommonHelpLD.ServiceIp;
            var model = new OnlyOfficeFile();

            string body = string.Empty;
            try
            {
                using (var reader = new StreamReader(HttpContext.Request.Body))
                {
                    body = reader.ReadToEndAsync().Result;
                }
                if (!string.IsNullOrEmpty(body))
                {
                    var endIndex = body.IndexOf("fileDataJson");//, fileDataJson:
                    if (endIndex > 0)
                    {
                        body = body.Substring(0, endIndex - 15);
                        body = body.Trim().TrimEnd(',');
                    }
                    var fileData = JsonConvert.DeserializeObject<CallbackApiReqModel>(body);

                    if (fileData != null && (fileData.status == 2 || fileData.status == 6))
                    {
                        status = fileData.status.ToString();
                        try
                        {
                            if (fileData.key.Contains("_"))
                            {
                                var keys = fileData.key.Split('_');
                                if (keys.Length >= 3)
                                {
                                    fileData.Id = string.Format("{0}_{1}", keys[0], keys[1]);
                                }
                                else
                                {
                                    fileData.Id = keys[1];
                                }
                            }
                            else
                            {
                                fileData.Id = fileData.key;
                            }
                            var fileModel = OnlyOfficeFileHelper.GetFileObjModel(fileData.key);//(fileData.Id);
                            var sFilePath = OnlyOfficeFileHelper.GetFilePath(fileModel.FileType);
                            string sFileName = string.Format("{0}.docx", fileModel.Key);
                            var PATH_FOR_SAVE = sFilePath + "/" + sFileName; //文件的绝对路径

                            search1 = fileModel.Key;
                            search2 = fileData.key;
                            model.FileKey = fileData.key;
                            model.Type = fileModel.FileType;
                            model.Name = sFileName;
                            model.DisplayName = sFileName;
                            model.TaskId = search1;
                            model.CreatedBy = "CallbackApi";
                            model.VersionNo = 1;
                            var model_o = _serviceOnlyOfficeFile.GetModelByTaskId(model.TaskId, model.Type);
                            if (model_o != null)
                            {
                                model.VersionNo = model_o.VersionNo + 1;
                            }
                            var req = WebRequest.Create(fileData.url);

                            using (var stream = req.GetResponse().GetResponseStream())
                            {
                                using (var fs = System.IO.File.Open(PATH_FOR_SAVE, FileMode.Create))
                                {
                                    var buffer = new byte[4096];
                                    int readed;
                                    while ((readed = stream.Read(buffer, 0, 4096)) != 0)
                                    {
                                        fs.Write(buffer, 0, readed);
                                    }
                                }
                            }
                            isSucceed = true;
                            model.FilePath = PATH_FOR_SAVE.Replace(AppDomain.CurrentDomain.BaseDirectory, string.Empty);
                        }
                        catch (Exception ex)
                        {
                            isSucceed = false;
                        }
                    }
                    else
                    {
                        isSucceed = true;
                    }
                    fileDataJson = JsonConvert.SerializeObject(fileData);
                }
                else
                {
                    isSucceed = true;
                }
            }
            catch (Exception ex)
            {
                isSucceed = false;
            }
            var rspJosn = "{\"error\":0}";//返回保存成功
            if (isSucceed)
            {
                _serviceOnlyOfficeFile.SaveModel(model);
            }
            else
            {
                rspJosn = "{\"error\":1}";//返回保存失败
            }
            _serviceCommonLog.AddLog(_className, method, "回调接口", body, rspJosn, "status:" + status, ip, search1, search2);
            Response.WriteAsync(rspJosn);
        }
}