:sparkles:新增文件下载接口

Infrastructure/Controllers/BaseController.cs

@@ -8,6 +8,7 @@ using Newtonsoft.Json.Serialization;
 using System;
 using System.Collections.Generic;
 using System.IO;
+using System.Threading.Tasks;
 using System.Web;
 
 namespace Infrastructure.Controllers
@@ -75,6 +76,23 @@ namespace Infrastructure.Controllers
             return File(stream, "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet", HttpUtility.UrlEncode(fileName));
         }
 
+        /// <summary>
+        /// 下载文件
+        /// </summary>
+        /// <param name="path"></param>
+        /// <param name="fileName">文件名，一定要带扩展名</param>
+        /// <returns></returns>
+        protected IActionResult DownFile(string path, string fileName)
+        {
+            if (!System.IO.File.Exists(path))
+            {
+                return NotFound();
+            }
+            var stream = System.IO.File.OpenRead(path);  //创建文件流
+            Response.Headers.Add("Access-Control-Expose-Headers", "Content-Disposition");
+            return File(stream, "application/octet-stream", HttpUtility.UrlEncode(fileName));
+        }
+
         #region 方法
 
         /// <summary>

Infrastructure/Helper/FileUtil.cs

@@ -144,7 +144,7 @@ namespace Infrastructure
         /// 写文件
         /// </summary>
         /// <param name="path">完整路径带扩展名的</param>
-        /// <param name="content"></param>
+        /// <param name="content">写入文件内容</param>
         public static void WriteAndSave(string path, string content)
         {
             if (RuntimeInformation.IsOSPlatform(OSPlatform.Linux))
@@ -158,17 +158,7 @@ namespace Infrastructure
             Console.WriteLine("开始写入文件，Path=" + path);
             try
             {
-                //实例化一个文件流--->与写入文件相关联
-                using var fs = new FileStream(path, FileMode.Create, FileAccess.Write);
-                //实例化一个StreamWriter-->与fs相关联
-                using var sw = new StreamWriter(fs);
-                //开始写入
-                sw.Write(content);
-                //清空缓冲区
-                sw.Flush();
-                //关闭流
-                sw.Close();
-                fs.Close();
+                File.WriteAllText(path, content);
             }
             catch (Exception ex)
             {