DocumentPreview.cs
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using NCC.Common.Configuration;
using NCC.Common.Enum;
using NCC.Common.Extension;
using NCC.Common.FileManage;
using NCC.Common.Filter;
using NCC.Common.Helper;
using NCC.Dependency;
using NCC.DynamicApiController;
using NCC.Extend.Entitys.Dto.DocumentPreview;
using NCC.FriendlyException;
using Mapster;
using Microsoft.AspNetCore.Authorization;
using Microsoft.AspNetCore.Http;
using Microsoft.AspNetCore.Mvc;
using System.Collections.Generic;
using System.IO;
using System.Linq;
namespace NCC.Extend
{
/// <summary>
/// 文件预览
/// 版 本：V1.20.15
/// 版 权：Wesley（https://www.NCCsoft.com）
/// 作 者：NCC开发平台组
/// 日 期：2022-03-16
/// </summary>
[ApiDescriptionSettings(Tag = "Extend", Name = "DocumentPreview", Order = 600)]
[Route("api/extend/[controller]")]
public class DocumentPreview : IDynamicApiController, ITransient
{
#region Get
/// <summary>
/// 获取文档列表
/// </summary>
/// <param name="input"></param>
/// <returns></returns>
[HttpGet("")]
public dynamic GetList_Api([FromQuery] KeywordInput input)
{
var output = GetList(input);
return output;
}
/// <summary>
/// 文件在线预览
/// </summary>
/// <param name="fileId"></param>
/// <param name="input"></param>
/// <returns></returns>
[HttpGet("{fileId}/Preview")]
public dynamic DocumentPreview_Api(string fileId, [FromQuery] DocumentPreviewPreviewInput input)
{
var output = new DocumentPreviewPreviewOutput();
var filePath = FileVariable.DocumentPreviewFilePath;
var files = FileHelper.GetAllFiles(filePath);
if (fileId.ToInt() > files.Count)
throw NCCException.Oh(ErrorCode.D8000);
var file = files[fileId.ToInt()];
if (file != null)
{
var domain = App.Configuration["NCC_APP:Domain"];
var yozoUrl= App.Configuration["NCC_APP:YOZO:domain"];
var yozoKey = App.Configuration["NCC_APP:YOZO:domainKey"];
var httpContext = App.HttpContext;
output.fileName = file.Name;
output.filePath = domain + "/api/Extend/DocumentPreview/down/" + file.Name;
var url = string.Format("{0}?k={1}&url={2}", yozoUrl,
yozoKey, output.filePath, input.noCache, input.watermark, input.isCopy, input.pageStart, input.pageEnd, input.type);
if (input.previewType.Equals("localPreview"))
{
url = "http://" + httpContext.GetLocalIpAddressToIPv4() + ":" + httpContext.Connection.LocalPort + "/api/Extend/DocumentPreview/down/" + file.Name;
}
return url;
}
else
throw NCCException.Oh(ErrorCode.D8000);
}
/// <summary>
/// 下载
/// </summary>
/// <param name="fileName"></param>
[HttpGet("down/{fileName}")]
[AllowAnonymous]
public void FileDown(string fileName)
{
var filePath = FileVariable.DocumentPreviewFilePath + fileName;
var systemFilePath = FileVariable.SystemFilePath + fileName;
if (FileHelper.Exists(filePath))
FileHelper.DownloadFile(filePath, fileName);
else
FileHelper.DownloadFile(systemFilePath, fileName);
}
/// <summary>
/// 本地预览
/// </summary>
/// <param name="fileId"></param>
/// <returns></returns>
[HttpGet("PreviewLocal/{fileId}")]
[AllowAnonymous]
public dynamic PreviewLocalFile(string fileId)
{
var filePath = FileVariable.DocumentPreviewFilePath;
var fileInfo = FileHelper.GetAllFiles(filePath)[fileId.ToInt()];
var fileName = filePath + fileInfo.Name;
if (fileInfo.Extension == ".xlsx" || fileInfo.Extension == ".xls")
{
PDFHelper.AsposeExcelToPDF(filePath + fileInfo.Name);
}
else if (fileInfo.Extension == ".docx" || fileInfo.Extension == ".doc")
{
PDFHelper.AsposeWordToPDF(filePath + fileInfo.Name);
}
else if (fileInfo.Extension == ".pptx" || fileInfo.Extension == ".ppt")
{
PDFHelper.PPTToPDF(filePath + fileInfo.Name);
}
//输出pdf文件
return new FileStreamResult(new FileStream(fileName, FileMode.Open), "application/pdf") { FileDownloadName = fileInfo.Name };
}
#endregion
#region PrivateMethod
/// <summary>
/// 文档列表
/// </summary>
/// <param name="input"></param>
/// <returns></returns>
private List<DocumentPreviewListOutput> GetList(KeywordInput input)
{
var filePath = FileVariable.DocumentPreviewFilePath;
var files = FileHelper.GetAllFiles(filePath);
List<FileModel> data = new List<FileModel>();
if (files != null)
{
for (int i = 0; i < files.Count; i++)
{
var item = files[i];
FileModel fileModel = new FileModel();
fileModel.FileId = i.ToString();
fileModel.FileName = item.Name;
fileModel.FileType = FileHelper.GetFileType(item);
fileModel.FileSize = FileHelper.GetFileSize(item.FullName).ToString();
fileModel.FileTime = item.LastWriteTime;
data.Add(fileModel);
}
data = data.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.IsNullOrEmpty())
{
data = data.FindAll(x => x.FileName.Contains(input.keyword));
}
var output = data.OrderByDescending(x=>x.FileTime).Adapt<List<DocumentPreviewListOutput>>();
return output;
}
#endregion
}
}