public string DownloadCourseWare(string pRequest)
        {
            var rd     = new APIResponse <DownloadCourseWareRD>();
            var rdData = new DownloadCourseWareRD();

            rdData.Url          = "www.baidu.com/1.doc";
            rdData.DocumentType = "word";
            rd.Data             = rdData;
            rd.ResultCode       = 0;
            return(rd.ToJSON());
        }
        public string DownloadCourseWare(string pRequest)
        {
            var rd     = new APIResponse <DownloadCourseWareRD>();
            var rdData = new DownloadCourseWareRD();
            var rp     = pRequest.DeserializeJSONTo <APIRequest <DownloadCourseWareRP> >();

            if (rp.Parameters == null)
            {
                throw new ArgumentException();
            }

            if (rp.Parameters != null)
            {
                rp.Parameters.Validate();
            }

            var loggingSessionInfo = Default.GetBSLoggingSession(rp.CustomerID, rp.UserID);

            try
            {
                MLCourseWareBLL    wareBll = new MLCourseWareBLL(loggingSessionInfo);
                MLCourseWareEntity entity  = wareBll.GetByID(rp.Parameters.CourseWareId);
                if (entity != null)
                {
                    rdData.Url          = entity.CourseWareFile;
                    rdData.DocumentType = entity.ExtName;
                }
                else
                {
                    throw new APIException("未发现下载文件")
                          {
                              ErrorCode = 103
                          };
                }
                rd.ResultCode = 0;
            }
            catch (Exception ex)
            {
                rd.ResultCode = 103;
                rd.Message    = ex.Message;
            }
            rd.Data = rdData;
            return(rd.ToJSON());
        }