1.开发分片上传接口

Tiobon.Core.Api/Controllers/FileController.cs

@@ -145,4 +145,22 @@ public class FileController : BaseApiController
     }
     #endregion
 
+    #region 分片上传
+    /// <summary>
+    /// 分片上传
+    /// </summary>
+    /// <param name="file"></param>
+    /// <param name="videoName"></param>
+    /// <param name="chunkIndex"></param>
+    /// <param name="totalChunks"></param>
+    /// <param name="id"></param>
+    /// <returns></returns>
+    [HttpPost("UploadLarge")]
+    public async Task<IActionResult> UploadLargeAsync(IFormFile file, string videoName, int chunkIndex, int totalChunks, string id)
+    {
+        dynamic obj = await _ghre_AttachmentServices.UploadVideoAsync(file, videoName, chunkIndex, totalChunks, id);
+        return Ok(obj);
+    }
+    #endregion
+
 }

Tiobon.Core.IServices/Ghre/IGhre_AttachmentServices.cs

@@ -1,4 +1,5 @@
-using Tiobon.Core.IServices.BASE;
+using Microsoft.AspNetCore.Http;
+using Tiobon.Core.IServices.BASE;
 using Tiobon.Core.Model.Models;
 
 namespace Tiobon.Core.IServices
@@ -8,5 +9,7 @@ namespace Tiobon.Core.IServices
 	/// </summary>	
     public interface IGhre_AttachmentServices :IBaseServices<Ghre_Attachment, Ghre_AttachmentDto, InsertGhre_AttachmentInput, EditGhre_AttachmentInput>
 	{
+        Task<dynamic> UploadVideoAsync(IFormFile file, string videoName, int chunkIndex, int totalChunks, string id);
+
     }
 }

Tiobon.Core.Services/Ghre/Ghre_AttachmentServices.cs

@@ -3,12 +3,15 @@ using Tiobon.Core.IServices;
 using Tiobon.Core.Model.Models;
 using Tiobon.Core.Services.BASE;
 using Tiobon.Core.IRepository.Base;
+using Microsoft.AspNetCore.Http;
+using System.Dynamic;
+using SqlSugar;
 
 namespace Tiobon.Core.Services
 {
-	/// <summary>
-	/// 附件 (服务)
-	/// </summary>
+    /// <summary>
+    /// 附件 (服务)
+    /// </summary>
     public class Ghre_AttachmentServices : BaseServices<Ghre_Attachment, Ghre_AttachmentDto, InsertGhre_AttachmentInput, EditGhre_AttachmentInput>, IGhre_AttachmentServices
     {
         private readonly IBaseRepository<Ghre_Attachment> _dal;
@@ -17,5 +20,74 @@ namespace Tiobon.Core.Services
             this._dal = dal;
             base.BaseDal = dal;
         }
+
+        public async Task<dynamic> UploadVideoAsync(IFormFile file, string videoName, int chunkIndex, int totalChunks, string id)
+        {
+            dynamic obj = new ExpandoObject();
+            string status = "error";
+            string message = string.Empty;
+            string pathHeader = string.Empty;
+            string url = string.Empty;
+
+            try
+            {
+                var path = $"{$"{Environment.CurrentDirectory}{Path.DirectorySeparatorChar}wwwroot{Path.DirectorySeparatorChar}files{Path.DirectorySeparatorChar}upload{Path.DirectorySeparatorChar}{id}{Path.DirectorySeparatorChar}"}";
+                if (!Directory.Exists(path))
+                    Directory.CreateDirectory(path);
+                using (var stream = File.Create(path + $"{chunkIndex}"))
+                {
+                    await file.CopyToAsync(stream);
+                }
+
+                if (chunkIndex == totalChunks - 1)
+                    await FileMerge(id, ".mp4", SnowFlakeSingle.Instance.NextId());
+
+                status = "ok";
+            }
+            catch (Exception E)
+            {
+                message = E.Message;
+            }
+            obj.url = url;
+            obj.status = status;
+            obj.message = message;
+            return obj;
+        }
+
+        public static async Task<object> FileMerge(string lastModified, string fileExts, long NewfileName)
+        {
+            string erro = "";
+            bool ok = false;
+            try
+            {
+                string wwwroot = $"{Directory.GetCurrentDirectory()}/wwwroot/";
+                var temporary = Path.Combine(wwwroot, lastModified);//临时文件夹
+                //fileName = Request.Form["fileName"];//文件名
+                string fileExt = fileExts;//获取文件后缀
+                var files = Directory.GetFiles(temporary);//获得下面的所有文件
+                DirectoryInfo di = new DirectoryInfo(wwwroot + NewfileName + "/");
+                if (!di.Exists)
+                    di.Create();
+
+                var finalPath = Path.Combine(wwwroot + lastModified + "/", NewfileName + fileExt);//最终的文件名（demo中保存的是它上传时候的文件名，实际操作肯定不能这样）
+                var fs = new FileStream(finalPath, FileMode.Create);
+                foreach (var part in files.OrderBy(x => x.Length).ThenBy(x => x))//排一下序，保证从0-N Write
+                {
+                    var bytes = File.ReadAllBytes(part);
+                    await fs.WriteAsync(bytes, 0, bytes.Length);
+                    bytes = null;
+                    //System.IO.File.Delete(part);//删除分块
+                }
+                fs.Close();
+
+                //Directory.Delete(temporary);//删除文件夹
+                ok = true;
+            }
+            catch (Exception ex)
+            {
+                erro = ex.Message;
+            }
+            return ok;
+        }
     }
 }