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gx_api/GxPress/Api/GxPress.Api/WebControllers/WebMediaController.cs

@@ -94,6 +94,21 @@ namespace GxPress.Api.WebControllers
         {
             return await mediaService.GetBookMediaContentResultAsync(request);
         }
+        /// <summary>
+        /// 分页视频流
+        /// </summary>
+        /// <returns></returns>
+        [HttpPost("video")]
+        [AllowAnonymous]
+        public async Task<IActionResult> Video(VideoMediaFileStreamRequest request)
+        {
+            //获取文件
+           // var mediaLibrary = await mediaLibraryRepository.GetAsync(request.MediaLibraryId);
+            var filepath = "wwwroot" + "/cache/20200529/456789.mp4";
+            //获取文件流
+            var stream = System.IO.File.OpenRead(filepath);
+            return new FileStreamResult(stream, new MediaTypeHeaderValue("video/mp4")) { EnableRangeProcessing = true };
+        }
 
         /// <summary>
         /// 分页视频流

gx_api/GxPress/Infrastructure/GxPress.Common/Tools/StringUtils.cs

@@ -307,5 +307,29 @@ namespace GxPress.Common.Tools
                 m_strSize = (FactSize / 1024.00 / 1024.00 / 1024.00).ToString("F2") + " G";
             return m_strSize;
         }
+        public static string Fromffmpeg(string fileName)
+        {
+            string duration = "";
+            using (System.Diagnostics.Process pro = new System.Diagnostics.Process())
+            {
+                pro.StartInfo.UseShellExecute = false;
+                pro.StartInfo.ErrorDialog = false;
+                pro.StartInfo.RedirectStandardError = true;
+                pro.StartInfo.FileName = AppDomain.CurrentDomain.BaseDirectory +"ffmpeg.exe";
+                pro.StartInfo.Arguments = " -i " + fileName;
+                pro.Start();
+                System.IO.StreamReader errorreader = pro.StandardError;
+                pro.WaitForExit(1000);
+                string result = errorreader.ReadToEnd();
+                if (!string.IsNullOrEmpty(result))
+                {
+                    result = result.Substring(result.IndexOf("Duration: ") +("Duration: ").Length, ("00:00:00").Length);
+                    duration = result;
+                }
+                return duration;
+            }
+            return "";
+        }
+
     }
 }

gx_api/GxPress/Service/GxPress.Service.Implement/Epub/EpubService.cs

@@ -72,7 +72,7 @@ namespace GxPress.Service.Implement.Epub
             foreach (EpubTextContentFile textContentFile in epubBook.ReadingOrder)
             {
                 if (i >= sectionValue && sectionValue > 0)
-                    throw new Common.Exceptions.BusinessException("");
+                    return "";
                 if (textContentFile.FileName.Equals(request.CatalogId) || textContentFile.FileName.Equals(request.CatalogNameg))
                 {
                     //当前文本内容文件的HTML