优化 直接使用 现有媒体资源url 而不是从阿里云获取

Learn.VideoAnalysis.API/appsettings.json

@@ -56,6 +56,7 @@
     },
     "DB": {
       "ConnectionString": "AllowLoadLocalInfile=true;Server=192.168.2.9;User ID=root;Password=qwe123!@#;Port=3306;Database=learn.videoanalysis;CharSet=utf8mb4;pooling=true;SslMode=None",
+      //"ConnectionString": "AllowLoadLocalInfile=true;Server=rm-2vc20nd3d11g0oh6g2o.rwlb.cn-chengdu.rds.aliyuncs.com;User ID=marking;Password=poiuytPOIUYT098765)(*&^%;Port=3306;Database=learn.videoanalysis;CharSet=utf8mb4;pooling=true;SslMode=None",
       "SqlType": "MySql",
       "UpdateTable": false
     },

VideoAnalysisCore/Controllers/LJZK_Controller.cs

@@ -392,6 +392,8 @@ namespace VideoAnalysisCore.Controllers
             var task = await videoTaskDB.GetByIdAsync(videoTaskId);
             if (task is null)
                 return BadRequest("参数无效");
+            if(!string.IsNullOrWhiteSpace(task.MediaUrl))
+                return Ok(task.MediaUrl);
             try
             {
                 var videoInfo = await vodClient.GetPlayInfoAsync(new GetPlayInfoRequest()