添加项目文件。

extend/Tnb.Extend/DocumentPreview.cs

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+using System.Web;
+using JNPF.Common.Configuration;
+using JNPF.Common.Core.Manager.Files;
+using JNPF.Common.Enums;
+using JNPF.Common.Extension;
+using JNPF.Common.Filter;
+using JNPF.Common.Options;
+using JNPF.DependencyInjection;
+using JNPF.DynamicApiController;
+using JNPF.Extend.Entitys.Dto.DocumentPreview;
+using JNPF.FriendlyException;
+using JNPF.Logging.Attributes;
+using Mapster;
+using Microsoft.AspNetCore.Authorization;
+using Microsoft.AspNetCore.Mvc;
+using Microsoft.Extensions.Options;
+
+namespace JNPF.Extend;
+
+/// <summary>
+/// 文件预览
+/// 版 本：V3.2
+/// 版 权：拓通智联科技有限公司（http://www.tuotong-tech.com）
+/// 日 期：2021-06-01 .
+/// </summary>
+[ApiDescriptionSettings(Tag = "Extend", Name = "DocumentPreview", Order = 600)]
+[Route("api/extend/[controller]")]
+public class DocumentPreview : IDynamicApiController, ITransient
+{
+    private readonly IFileManager _fileManager;
+
+    public DocumentPreview(IFileManager fileManager)
+    {
+        _fileManager = fileManager;
+    }
+
+    #region Get
+
+    /// <summary>
+    /// 获取文档列表.
+    /// </summary>
+    /// <param name="input">请求参数.</param>
+    /// <returns></returns>
+    [HttpGet("")]
+    public async Task<dynamic> GetList_Api([FromQuery] KeywordInput input)
+    {
+        var filePath = FileVariable.DocumentPreviewFilePath;
+        var list = await _fileManager.GetObjList(filePath);
+        list = list.FindAll(x => "xlsx".Equals(x.FileType) || "xls".Equals(x.FileType) || "docx".Equals(x.FileType) || "doc".Equals(x.FileType) || "pptx".Equals(x.FileType) || "ppt".Equals(x.FileType));
+        if (input.keyword.IsNotEmptyOrNull())
+            list = list.FindAll(x => x.FileName.Contains(input.keyword));
+        return list.OrderByDescending(x => x.FileTime).Adapt<List<DocumentPreviewListOutput>>();
+    }
+
+    /// <summary>
+    /// 文件在线预览.
+    /// </summary>
+    /// <param name="fileId"></param>
+    /// <param name="input"></param>
+    /// <returns></returns>
+    [HttpGet("{fileId}/Preview")]
+    public async Task<dynamic> DocumentPreview_Api(string fileId, [FromQuery] DocumentPreviewPreviewInput input)
+    {
+        var filePath = FileVariable.DocumentPreviewFilePath;
+        var files = await _fileManager.GetObjList(filePath);
+        var file = files.Find(x => x.FileId == fileId);
+        if (file.IsNotEmptyOrNull())
+        {
+            string domain = App.GetConfig<AppOptions>("JNPF_App", true).Domain;
+            string yozoUrl = App.GetConfig<AppOptions>("JNPF_App", true).YOZO.Domain;
+            string yozoKey = App.GetConfig<AppOptions>("JNPF_App", true).YOZO.domainKey;
+            var url = string.Format("{0}/api/Extend/DocumentPreview/down/{1}", domain, file.FileName);
+            if (!input.previewType.Equals("localPreview"))
+            {
+                url = string.Format("{0}?k={1}&url={2}", yozoUrl,
+                yozoKey, url, input.noCache, input.watermark, input.isCopy, input.pageStart, input.pageEnd, input.type);
+            }
+            return url;
+        }
+        else
+        {
+            throw Oops.Oh(ErrorCode.D8000);
+        }
+    }
+
+    /// <summary>
+    /// 下载.
+    /// </summary>
+    /// <param name="fileName"></param>
+    [HttpGet("down/{fileName}")]
+    [IgnoreLog]
+    [AllowAnonymous]
+    public async Task FileDown(string fileName)
+    {
+        var filePath = Path.Combine(FileVariable.DocumentPreviewFilePath, fileName);
+        var systemFilePath = Path.Combine(FileVariable.SystemFilePath, fileName);
+        FileStreamResult fileStreamResult = null;
+        if (await _fileManager.ExistsFile(filePath))
+            fileStreamResult = await _fileManager.DownloadFileByType(filePath, fileName);
+        else
+            fileStreamResult = await _fileManager.DownloadFileByType(systemFilePath, fileName);
+
+        byte[] bytes = new byte[fileStreamResult.FileStream.Length];
+
+        fileStreamResult.FileStream.Read(bytes, 0, bytes.Length);
+
+        fileStreamResult.FileStream.Close();
+        var httpContext = App.HttpContext;
+        httpContext.Response.ContentType = "application/octet-stream";
+        httpContext.Response.Headers.Add("Content-Disposition", "attachment;filename=" + HttpUtility.UrlEncode(fileName, System.Text.Encoding.UTF8));
+        httpContext.Response.Headers.Add("Content-Length", bytes.Length.ToString());
+        httpContext.Response.Body.WriteAsync(bytes);
+        httpContext.Response.Body.Flush();
+        httpContext.Response.Body.Close();
+    }
+    #endregion
+}