/// <summary>
/// 上传文件
/// </summary>
/// <param name="doc"></param>
/// <param name="options"></param>
/// <returns></returns>
public async Task <string> UpLoadFile(MongoDbFileDoc doc, GridFSUploadOptions options = null)
{
var bucket = new GridFSBucket(GetMongoDatabase(), new GridFSBucketOptions());
var id = await bucket.UploadFromBytesAsync(doc.FileName, doc.FileBytes, options);
return(id.ToString());
}
/// <summary>
/// 下载文件
/// </summary>
/// <param name="id"></param>
/// <returns></returns>
public async Task <MongoDbFileDoc> DownLoadFile(string id)
{
var model = new MongoDbFileDoc();
var filter = Builders <GridFSFileInfo <ObjectId> > .Filter.Eq(x => x.Id, new ObjectId(id));
var bucket = new GridFSBucket(GetMongoDatabase(), new GridFSBucketOptions());
var fileInfo = await bucket.FindAsync(filter);
var file = await fileInfo.FirstOrDefaultAsync();
if (file != null)
{
model.FileName = file.Filename;
model.FileId = id;
model.FileBytes = await bucket.DownloadAsBytesAsync(new ObjectId(id));
}
return(model);
}