✨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)
             {

ZR.Admin.WebApi/Controllers/CommonController.cs

@@ -151,6 +151,36 @@ namespace ZR.Admin.WebApi.Controllers
 
         #endregion
 
+        /// <summary>
+        /// 下载文件
+        /// </summary>
+        /// <param name="path"></param>
+        /// <param name="fileId"></param>
+        /// <returns></returns>
+        [HttpGet]
+        [Verify]
+        [ActionPermissionFilter(Permission = "common")]
+        [Log(Title = "下载文件", IsSaveResponseData = false)]
+        public IActionResult DownloadFile(string? path, long fileId = 0)
+        {
+            var tempPath = path;
+            if (fileId > 0)
+            {
+                var fileInfo = SysFileService.GetById(fileId);
+                if (fileInfo != null)
+                {
+                    tempPath = fileInfo.FileUrl;
+                }
+            }
+            string fullPath = tempPath;
+            if (tempPath.StartsWith("/"))
+            {
+                fullPath = Path.Combine(WebHostEnvironment.WebRootPath, tempPath.ReplaceFirst("/", ""));
+            }
+            string fileName = Path.GetFileName(fullPath);
+            return DownFile(fullPath, fileName);
+        }
+
         /// <summary>
         /// 初始化种子数据
         /// </summary>

ZR.ServiceCore/Services/SysFileService.cs

@@ -55,13 +55,15 @@ namespace ZR.ServiceCore.Services
                 await formFile.CopyToAsync(stream);
             }
             string uploadUrl = OptionsSetting.Upload.UploadUrl;
-            string accessPath = string.Concat(uploadUrl, "/", filePath.Replace("\\", "/"), "/", fileName);
+            string accessPath = string.Concat(filePath.Replace("\\", "/"), "/", fileName);
+            Uri baseUri = new(uploadUrl);
+            Uri fullUrl = new(baseUri, accessPath);
             SysFile file = new(formFile.FileName, fileName, fileExt, fileSize + "kb", filePath, userName)
             {
                 StoreType = (int)StoreType.LOCAL,
                 FileType = formFile.ContentType,
                 FileUrl = finalFilePath.Replace("\\", "/"),
-                AccessUrl = accessPath
+                AccessUrl = fullUrl.AbsoluteUri
             };
             file.Id = await InsertFile(file);
             return file;
@@ -111,22 +113,14 @@ namespace ZR.ServiceCore.Services
         {
             if (string.IsNullOrEmpty(str))
             {
-                str = Guid.NewGuid().ToString();
+                str = Guid.NewGuid().ToString().ToLower();
             }
             return BitConverter.ToString(MD5.HashData(Encoding.Default.GetBytes(str)), 4, 8).Replace("-", "");
         }
 
         public Task<long> InsertFile(SysFile file)
-        {
-            try
         {
             return Insertable(file).ExecuteReturnSnowflakeIdAsync();//单条插入返回雪花ID;
         }
-            catch (Exception ex)
-            {
-                Console.WriteLine("存储图片失败" + ex.Message);
-                throw new Exception(ex.Message);
-            }
-        }
     }
 }