生成缩略图

OpenAuth.App/ServiceApp/Subscribe/ConfigSubscribe.cs

@@ -13,8 +13,12 @@ using OpenAuth.App.ServiceApp;
 using OpenAuth.Repository.Domain;
 using OpenAuth.WebApi;
 using Quartz;
+using SixLabors.ImageSharp;
+using SixLabors.ImageSharp.Processing;
 using SqlSugar;
 
+
+
 namespace OpenAuth.App.BaseApp.Subscribe;
 
 public class ConfigSubscribe : IJob
@@ -261,6 +265,34 @@ public class ConfigSubscribe : IJob
                             .Where(a => a.ObjectKey.Equals(objectKey)).SingleAsync();
                         if (mediaFile == null)
                         {
+                            string objectKey1 = data.file.object_key.ToString();
+                            string suoluokey = "minipic/" + data.file.name.ToString();
+                            //缩略图处理
+                            var imageStream =  _minioService.GetObjectAsStream("", objectKey1);
+                            var width = 0;
+                            var height = 0;
+                            using (var image = Image.Load(imageStream.Result))
+                            {
+                                
+                                 width = image.Width;
+                                 height = image.Height;
+                                var thumbnailSize = 100; // 缩略图大小，可以根据需要调整
+                                var thumbnail = image.Clone(ctx => ctx.Resize(new ResizeOptions
+                                {
+                                    Size = new Size(thumbnailSize, thumbnailSize),
+                                    Mode = ResizeMode.Crop // 根据需要选择裁剪或填充模式
+                                }));
+
+                                // 将缩略图保存到内存流中（为了上传）
+                                using (var memoryStream = new MemoryStream())
+                                {
+                                    thumbnail.SaveAsJpeg(memoryStream); // 可以根据需要选择不同的格式，如Png, Bmp等。
+                                    memoryStream.Position = 0; // 重置流的位置到开始处
+
+                                    // 上传缩略图到MinIO
+                                    await _minioService.PutObjectAsync("", data.file.name.ToString(), suoluokey, memoryStream); // 根据实际格式修改Content-Type
+                                }
+                            }
                             var fileUpload = new LasaMediaFile()
                             {
                                 Id = Guid.NewGuid().ToString(),
@@ -283,7 +315,10 @@ public class ConfigSubscribe : IJob
                                 ParentKey = folderKey[2],
                                 Tid = result.tid,
                                 Bid = result.bid,
-                                FlightType = flightType
+                                FlightType = flightType,
+                                Width = width,
+                                Height = height,
+                                minipic = suoluokey
                             };
                             // todo 添加事务
                             await _sqlSugarClient.Insertable(fileUpload).ExecuteCommandAsync();

OpenAuth.Repository/Domain/LasaMediaFile.cs

@@ -116,4 +116,6 @@ public class LasaMediaFile
     
     [SugarColumn(IsIgnore = true)]
     public string PicLink { get; set; }
+
+    public string minipic { get; set; }
 }