public async Task <IActionResult> GetImage(string fileId)
{
//try
//{
// if (string.IsNullOrEmpty(fileId)) return Content("error");
// var myFileId = fileId.ToLongByHex();
// var noteFile = noteFileService.GetFile(myFileId);
// if (noteFile == null)
// //return Content("NoFoundImage");
// return NoFoundImage();
// //获取又拍云操作对象
// UpYun upyun = new UpYun(config.UpyunConfig.UpyunBucket, config.UpyunConfig.UpyunUsername, config.UpyunConfig.UpyunPassword);
// upyun.secret = config.UpyunConfig.UpyunSecret;
// string path = noteFile.Path;
// int unixTimestamp = UnixTimeHelper.GetTimeStampInInt32();
// unixTimestamp += 15;
// string _upt = upyun.CreatToken(unixTimestamp.ToString(), upyun.secret, path);
// return Redirect($"https://upyun.morenote.top{path}?_upt={_upt}");
//}
//catch (Exception ex)
//{
// return NoFoundImage();
//}
try
{
if (string.IsNullOrEmpty(fileId))
{
return(Content("error"));
}
var myFileId = fileId.ToLongByHex();
var noteFile = noteFileService.GetFile(myFileId);
if (noteFile == null)
{
//return Content("NoFoundImage");
return(NoFoundImage());
}
//获取操作对象
string fileExt = Path.GetExtension(noteFile.Name);
var fileService = FileStoreServiceFactory.Instance(webSiteConfig);
var objectName = $"{noteFile.UserId.ToHex()}/images/{noteFile.CreatedTime.ToString("yyyy")}/{noteFile.CreatedTime.ToString("MM")}/{noteFile.FileId.ToHex()}{Path.GetExtension(noteFile.Name)}";
var provider = new FileExtensionContentTypeProvider();
var memi = provider.Mappings[fileExt];
var data = await fileService.GetObjecByteArraytAsync(webSiteConfig.MinIOConfig.NoteFileBucketName, objectName);
return(File(data, memi));
}
catch (Exception ex)
{
return(NoFoundImage());
}
}
//下载附件
public async Task <IActionResult> Download(string attachId)
{
//todo:bug 要使用流式下载，减少下载时候的内存消耗
var attach = await attachService.GetAttachAsync(attachId.ToLongByHex(), GetUserIdBySession());
var provider = new FileExtensionContentTypeProvider();
string fileExt = Path.GetExtension(attach.Name);
var memi = provider.Mappings[fileExt];
var fileService = FileStoreServiceFactory.Instance(config);
var data = await fileService.GetObjecByteArraytAsync(config.MinIOConfig.NoteFileBucketName, attach.Path);
return(File(data, memi, attach.Title));
}
//todo： 考虑该函数的删除文件的安全性，是否存在注入的风险
private async Task DeleteAttachOnDiskAsync(string path)
{
try
{
var fileStore = FileStoreServiceFactory.Instance(config);
await fileStore.RemoveObjectAsync(config.MinIOConfig.NoteFileBucketName, path);
}
catch (Exception ex)
{
Debug.WriteLine(ex.StackTrace);
throw;
}
}
public async Task <bool> SaveFile(string objectName, IFormFile formFile, string contentType)
{
try
{
var fileStore = FileStoreServiceFactory.Instance(webSiteConfig);
using (Stream stream = formFile.OpenReadStream())
{
await fileStore.PutObjectAsync(webSiteConfig.MinIOConfig.NoteFileBucketName, objectName, stream, stream.Length, contentType);
}
return(true);
}
catch (Exception ex)
{
return(false);
}
}
public async Task <IActionResult> GetAvatar(string userIdHex, string filename)
{
var fileUrlPath = $"{userIdHex}/images/logo";
var objectName = $"{fileUrlPath}/{filename}";
var provider = new FileExtensionContentTypeProvider();
string fileExt = Path.GetExtension(filename);
var memi = provider.Mappings[fileExt];
var fileService = FileStoreServiceFactory.Instance(webSiteConfig);
try
{
var data = await fileService.GetObjecByteArraytAsync(webSiteConfig.MinIOConfig.NoteFileBucketName, objectName);
return(File(data, memi));
}
catch (Exception ex)
{
Response.StatusCode = (int)HttpStatusCode.NotFound;
return(Content("NotFound"));
}
}
//下载全部的附件get all attachs by noteId
public async Task <IActionResult> DownloadAll(string noteId)
{
var note = noteService.GetNoteById(noteId.ToLongByHex());
if (note == null)
{
return(Content("No found note,Please check the noteId"));
}
if (GetUserIdBySession() != note.UserId)
{
return(Content("No permission to access attachments"));
}
// 得到文件列表
var attachs = await attachService.ListAttachsAsync(noteId.ToLongByHex(), GetUserIdBySession());
if (attachs.IsNullOrNothing())
{
return(Content(""));
}
var sb = new StringBuilder();
var fileStore = FileStoreServiceFactory.Instance(config);
//下载拼接
foreach (var attach in attachs)
{
sb.Append(attach.AttachId);
}
//计算AttachId合并字符串的哈希
string md5 = SHAEncryptHelper.MD5Encrypt(sb.ToString());
var dir = config.FileStoreConfig.TempFolder + Path.DirectorySeparatorChar + note.NoteId.ToHex();
var zipFileName = config.FileStoreConfig.TempFolder + Path.DirectorySeparatorChar + md5 + ".zip";
if (!System.IO.File.Exists(zipFileName))
{
//清理文件夹
if (Directory.Exists(dir))
{
Directory.Delete(dir, true);
}
Directory.CreateDirectory(dir);
//下载附件到本地
foreach (var attach in attachs)
{
string fileName = TextFilterUtil.DelUnSafeChar(attach.Title);
await fileStore.GetObjectAsync(config.MinIOConfig.NoteFileBucketName, attach.Path, dir + Path.DirectorySeparatorChar + fileName);
}
//执行压缩
ZipHelper compressedFilesHelper = new ZipHelper();
compressedFilesHelper.CreateZipFile(zipFileName, null, dir);
}
var memi = GetMemi(".zip");
var stream = System.IO.File.Open(zipFileName, FileMode.Open, FileAccess.Read);
{
return(File(stream, memi, Path.GetFileName(zipFileName)));
}
}