操控平台后端代码
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// 大名科技(天津)有限公司版权所有 电话:18020030720 QQ:515096995
//
// 此源代码遵循位于源代码树根目录中的 LICENSE 文件的许可证
using Aliyun.OSS.Util;
using Furion.VirtualFileServer;
using OnceMi.AspNetCore.OSS;
namespace Admin.NET.Core.Service;
/// <summary>
/// 系统文件服务
/// </summary>
[ApiDescriptionSettings(Order = 410)]
public class SysFileService : IDynamicApiController, ITransient
{
private readonly UserManager _userManager;
private readonly SqlSugarRepository<SysFile> _sysFileRep;
private readonly OSSProviderOptions _OSSProviderOptions;
private readonly UploadOptions _uploadOptions;
private readonly IOSSService _OSSService;
public SysFileService(UserManager userManager,
SqlSugarRepository<SysFile> sysFileRep,
IOptions<OSSProviderOptions> oSSProviderOptions,
IOptions<UploadOptions> uploadOptions,
IOSSServiceFactory ossServiceFactory)
{
_userManager = userManager;
_sysFileRep = sysFileRep;
_OSSProviderOptions = oSSProviderOptions.Value;
_uploadOptions = uploadOptions.Value;
if (_OSSProviderOptions.IsEnable)
_OSSService = ossServiceFactory.Create(Enum.GetName(_OSSProviderOptions.Provider));
}
/// <summary>
/// 获取文件分页列表
/// </summary>
/// <param name="input"></param>
/// <returns></returns>
[DisplayName("获取文件分页列表")]
public async Task<SqlSugarPagedList<SysFile>> Page(PageFileInput input)
{
return await _sysFileRep.AsQueryable()
.WhereIF(!string.IsNullOrWhiteSpace(input.FileName), u => u.FileName.Contains(input.FileName.Trim()))
.WhereIF(!string.IsNullOrWhiteSpace(input.StartTime.ToString()) && !string.IsNullOrWhiteSpace(input.EndTime.ToString()),
u => u.CreateTime >= input.StartTime && u.CreateTime <= input.EndTime)
.OrderBy(u => u.CreateTime, OrderByType.Desc)
.ToPagedListAsync(input.Page, input.PageSize);
}
/// <summary>
/// 上传文件
/// </summary>
/// <param name="file"></param>
/// <param name="path"></param>
/// <returns></returns>
[DisplayName("上传文件")]
public async Task<SysFile> UploadFile([Required] IFormFile file, [FromQuery] string? path)
{
return await HandleUploadFile(file, path);
}
/// <summary>
/// 上传文件Base64
/// </summary>
/// <param name="strBase64"></param>
/// <param name="fileName"></param>
/// <param name="contentType"></param>
/// <param name="path"></param>
/// <returns></returns>
private async Task<SysFile> UploadFileFromBase64(string strBase64, string fileName, string contentType, string? path)
{
byte[] fileData = Convert.FromBase64String(strBase64);
var ms = new MemoryStream();
ms.Write(fileData);
ms.Seek(0, SeekOrigin.Begin);
if (string.IsNullOrEmpty(fileName))
fileName = $"{YitIdHelper.NextId()}.jpg";
if (string.IsNullOrEmpty(contentType))
contentType = "image/jpg";
IFormFile formFile = new FormFile(ms, 0, fileData.Length, "file", fileName)
{
Headers = new HeaderDictionary(),
ContentType = contentType
};
return await UploadFile(formFile, path);
}
/// <summary>
/// 上传文件Base64
/// </summary>
/// <param name="input"></param>
/// <returns></returns>
[DisplayName("上传文件Base64")]
[HttpPost]
public async Task<SysFile> UploadFileFromBase64(UploadFileFromBase64Input input)
{
return await UploadFileFromBase64(input.FileDataBase64, input.FileName, input.ContentType, input.Path);
}
/// <summary>
/// 上传多文件
/// </summary>
/// <param name="files"></param>
/// <returns></returns>
[DisplayName("上传多文件")]
public async Task<List<SysFile>> UploadFiles([Required] List<IFormFile> files)
{
var filelist = new List<SysFile>();
foreach (var file in files)
{
filelist.Add(await UploadFile(file, ""));
}
return filelist;
}
/// <summary>
/// 根据文件Id或Url下载
/// </summary>
/// <param name="input"></param>
/// <returns></returns>
[DisplayName("根据文件Id或Url下载")]
public async Task<IActionResult> DownloadFile(FileInput input)
{
var file = input.Id > 0 ? await GetFile(input) : await _sysFileRep.GetFirstAsync(u => u.Url == input.Url);
var fileName = HttpUtility.UrlEncode(file.FileName, Encoding.GetEncoding("UTF-8"));
if (_OSSProviderOptions.IsEnable)
{
var filePath = string.Concat(file.FilePath, "/", file.Id.ToString() + file.Suffix);
var stream = await (await _OSSService.PresignedGetObjectAsync(file.BucketName.ToString(), filePath, 5)).GetAsStreamAsync();
return new FileStreamResult(stream.Stream, "application/octet-stream") { FileDownloadName = fileName + file.Suffix };
}
else
{
var filePath = Path.Combine(file.FilePath, file.Id.ToString() + file.Suffix);
var path = Path.Combine(App.WebHostEnvironment.WebRootPath, filePath);
return new FileStreamResult(new FileStream(path, FileMode.Open), "application/octet-stream") { FileDownloadName = fileName + file.Suffix };
}
}
/// <summary>
/// 下载指定文件Base64格式
/// </summary>
/// <param name="url"></param>
/// <returns></returns>
[AllowAnonymous]
public async Task<string> DownloadFileBase64([FromBody] string url)
{
if (_OSSProviderOptions.IsEnable)
{
using var httpClient = new HttpClient();
HttpResponseMessage response = await httpClient.GetAsync(url);
if (response.IsSuccessStatusCode)
{
// 读取文件内容并将其转换为 Base64 字符串
byte[] fileBytes = await response.Content.ReadAsByteArrayAsync();
return Convert.ToBase64String(fileBytes);
}
else
{
throw new HttpRequestException($"Request failed with status code: {response.StatusCode}");
}
}
else
{
var sysFile = await _sysFileRep.GetFirstAsync(u => u.Url == url) ?? throw Oops.Oh($"文件不存在");
var filePath = Path.Combine(App.WebHostEnvironment.WebRootPath, sysFile.FilePath);
if (!Directory.Exists(filePath))
Directory.CreateDirectory(filePath);
var realFile = Path.Combine(filePath, $"{sysFile.Id}{sysFile.Suffix}");
if (!File.Exists(realFile))
throw Oops.Oh($"文件[{realFile}]不在存");
byte[] fileBytes = File.ReadAllBytes(realFile);
return Convert.ToBase64String(fileBytes);
}
}
/// <summary>
/// 删除文件
/// </summary>
/// <param name="input"></param>
/// <returns></returns>
[ApiDescriptionSettings(Name = "Delete"), HttpPost]
[DisplayName("删除文件")]
public async Task DeleteFile(DeleteFileInput input)
{
var file = await _sysFileRep.GetFirstAsync(u => u.Id == input.Id);
if (file != null)
{
await _sysFileRep.DeleteAsync(file);
if (_OSSProviderOptions.IsEnable)
{
await _OSSService.RemoveObjectAsync(file.BucketName.ToString(), string.Concat(file.FilePath, "/", $"{input.Id}{file.Suffix}"));
}
else
{
var filePath = Path.Combine(App.WebHostEnvironment.WebRootPath, file.FilePath, input.Id.ToString() + file.Suffix);
if (File.Exists(filePath))
File.Delete(filePath);
}
}
}
/// <summary>
/// 更新文件
/// </summary>
/// <param name="input"></param>
/// <returns></returns>
[ApiDescriptionSettings(Name = "Update"), HttpPost]
[DisplayName("更新文件")]
public async Task UpdateFile(FileInput input)
{
var isExist = await _sysFileRep.IsAnyAsync(u => u.Id == input.Id);
if (!isExist) throw Oops.Oh(ErrorCodeEnum.D8000);
await _sysFileRep.UpdateAsync(u => new SysFile() { FileName = input.FileName }, u => u.Id == input.Id);
}
/// <summary>
/// 获取文件
/// </summary>
/// <param name="input"></param>
/// <returns></returns>
private async Task<SysFile> GetFile([FromQuery] FileInput input)
{
var file = await _sysFileRep.GetFirstAsync(u => u.Id == input.Id);
return file ?? throw Oops.Oh(ErrorCodeEnum.D8000);
}
/// <summary>
/// 上传文件
/// </summary>
/// <param name="file">文件</param>
/// <param name="savePath">路径</param>
/// <returns></returns>
private async Task<SysFile> HandleUploadFile(IFormFile file, string savePath)
{
if (file == null) throw Oops.Oh(ErrorCodeEnum.D8000);
// 判断是否重复上传的文件
var sizeKb = (long)(file.Length / 1024.0); // 大小KB
var fileMd5 = string.Empty;
if (_uploadOptions.EnableMd5)
{
using (var fileStream = file.OpenReadStream())
{
fileMd5 = OssUtils.ComputeContentMd5(fileStream, fileStream.Length);
}
/*
* Mysql8 中如果使用了 utf8mb4_general_ci 之外的编码会出错,尽量避免在条件里使用.ToString()
* 因为 Squsugar 并不是把变量转换为字符串来构造SQL语句,而是构造了CAST(123 AS CHAR)这样的语句,这样这个返回值是utf8mb4_general_ci,所以容易出错。
*/
var strSizeKb = sizeKb.ToString();
var sysFile = await _sysFileRep.GetFirstAsync(u => u.FileMd5 == fileMd5 && (u.SizeKb == null || u.SizeKb == strSizeKb));
if (sysFile != null) return sysFile;
}
var path = savePath;
if (string.IsNullOrWhiteSpace(savePath))
{
path = _uploadOptions.Path;
var reg = new Regex(@"(\{.+?})");
var match = reg.Matches(path);
match.ToList().ForEach(a =>
{
var str = DateTime.Now.ToString(a.ToString().Substring(1, a.Length - 2)); // 每天一个目录
path = path.Replace(a.ToString(), str);
});
}
if (!_uploadOptions.ContentType.Contains(file.ContentType))
throw Oops.Oh(ErrorCodeEnum.D8001);
if (sizeKb > _uploadOptions.MaxSize)
throw Oops.Oh(ErrorCodeEnum.D8002);
var suffix = Path.GetExtension(file.FileName).ToLower(); // 后缀
if (string.IsNullOrWhiteSpace(suffix))
{
var contentTypeProvider = FS.GetFileExtensionContentTypeProvider();
suffix = contentTypeProvider.Mappings.FirstOrDefault(u => u.Value == file.ContentType).Key;
// 修改 image/jpeg 类型返回的 .jpe 后缀
if (suffix == ".jpe")
suffix = ".jpg";
}
if (string.IsNullOrWhiteSpace(suffix))
throw Oops.Oh(ErrorCodeEnum.D8003);
var newFile = new SysFile
{
Id = YitIdHelper.NextId(),
// BucketName = _OSSProviderOptions.IsEnable ? _OSSProviderOptions.Provider.ToString() : "Local",
// 阿里云对bucket名称有要求,1.只能包括小写字母,数字,短横线(-)2.必须以小写字母或者数字开头 3.长度必须在3-63字节之间
// 无法使用Provider
BucketName = _OSSProviderOptions.IsEnable ? _OSSProviderOptions.Bucket : "Local",
FileName = Path.GetFileNameWithoutExtension(file.FileName),
Suffix = suffix,
SizeKb = sizeKb.ToString(),
FilePath = path,
FileMd5 = fileMd5,
};
var finalName = newFile.Id + suffix; // 文件最终名称
if (_OSSProviderOptions.IsEnable)
{
newFile.Provider = Enum.GetName(_OSSProviderOptions.Provider);
var filePath = string.Concat(path, "/", finalName);
await _OSSService.PutObjectAsync(newFile.BucketName, filePath, file.OpenReadStream());
// http://<你的bucket名字>.oss.aliyuncs.com/<你的object名字>
// 生成外链地址 方便前端预览
switch (_OSSProviderOptions.Provider)
{
case OSSProvider.Aliyun:
newFile.Url = $"{(_OSSProviderOptions.IsEnableHttps ? "https" : "http")}://{newFile.BucketName}.{_OSSProviderOptions.Endpoint}/{filePath}";
break;
case OSSProvider.Minio:
// 获取Minio文件的下载或者预览地址
// newFile.Url = await GetMinioPreviewFileUrl(newFile.BucketName, filePath);// 这种方法生成的Url是有7天有效期的,不能这样使用
// 需要在MinIO中的Buckets开通对 Anonymous 的readonly权限
newFile.Url = $"{(_OSSProviderOptions.IsEnableHttps ? "https" : "http")}://{_OSSProviderOptions.Endpoint}/{newFile.BucketName}/{filePath}";
break;
}
}
else
{
newFile.Provider = ""; // 本地存储 Provider 显示为空
var filePath = Path.Combine(App.WebHostEnvironment.WebRootPath, path);
if (!Directory.Exists(filePath))
Directory.CreateDirectory(filePath);
var realFile = Path.Combine(filePath, finalName);
//IDetector detector;
using (var stream = File.Create(realFile))
{
await file.CopyToAsync(stream);
//detector = stream.DetectFiletype();
}
//var realExt = detector.Extension; // 真实扩展名
//// 二次校验扩展名
//if (!string.Equals(realExt, suffix.Replace(".", ""), StringComparison.OrdinalIgnoreCase))
//{
// var delFilePath = Path.Combine(App.WebHostEnvironment.WebRootPath, realFile);
// if (File.Exists(delFilePath))
// File.Delete(delFilePath);
// throw Oops.Oh(ErrorCodeEnum.D8001);
//}
// 生成外链
var host = CommonUtil.GetLocalhost();
if (!host.EndsWith("/"))
host += "/";
newFile.Url = $"{host}{newFile.FilePath}/{newFile.Id + newFile.Suffix}";
}
await _sysFileRep.AsInsertable(newFile).ExecuteCommandAsync();
return newFile;
}
///// <summary>
///// 获取Minio文件的下载或者预览地址
///// </summary>
///// <param name="bucketName">桶名</param>
///// <param name="fileName">文件名</param>
///// <returns></returns>
//private async Task<string> GetMinioPreviewFileUrl(string bucketName, string fileName)
//{
// return await _OSSService.PresignedGetObjectAsync(bucketName, fileName, 7);
//}
/// <summary>
/// 上传头像
/// </summary>
/// <param name="file"></param>
/// <returns></returns>
[DisplayName("上传头像")]
public async Task<SysFile> UploadAvatar([Required] IFormFile file)
{
var sysFile = await UploadFile(file, "Upload/Avatar");
var sysUserRep = _sysFileRep.ChangeRepository<SqlSugarRepository<SysUser>>();
var user = sysUserRep.GetFirst(u => u.Id == _userManager.UserId);
// 删除已有头像文件
if (!string.IsNullOrWhiteSpace(user.Avatar))
{
var fileId = Path.GetFileNameWithoutExtension(user.Avatar);
await DeleteFile(new DeleteFileInput { Id = long.Parse(fileId) });
}
await sysUserRep.UpdateAsync(u => new SysUser() { Avatar = sysFile.Url }, u => u.Id == user.Id);
return sysFile;
}
/// <summary>
/// 上传电子签名
/// </summary>
/// <param name="file"></param>
/// <returns></returns>
[DisplayName("上传电子签名")]
public async Task<SysFile> UploadSignature([Required] IFormFile file)
{
var sysFile = await UploadFile(file, "Upload/Signature");
var sysUserRep = _sysFileRep.ChangeRepository<SqlSugarRepository<SysUser>>();
var user = sysUserRep.GetFirst(u => u.Id == _userManager.UserId);
// 删除已有电子签名文件
if (!string.IsNullOrWhiteSpace(user.Signature) && user.Signature.EndsWith(".png"))
{
var fileId = Path.GetFileNameWithoutExtension(user.Signature);
await DeleteFile(new DeleteFileInput { Id = long.Parse(fileId) });
}
await sysUserRep.UpdateAsync(u => new SysUser() { Signature = sysFile.Url }, u => u.Id == user.Id);
return sysFile;
}
}