public void Revision_set_should_have_expected_result()
{
var subject = new GridFSDownloadByNameOptions();
subject.Revision = 2;
subject.Revision.Should().Be(2);
}
public void Revision_set_should_have_expected_result()
{
var subject = new GridFSDownloadByNameOptions();
subject.Revision = 2;
subject.Revision.Should().Be(2);
}
public byte[] DownloadAsBytesByName(string fileName, GridFSDownloadByNameOptions options = null)
{
MongoClient client = GetClient(m_connectionStr);
var db = client.GetDatabase(DatabaseName);
var bucket = new GridFSBucket(db, BucksOptions);
return(bucket.DownloadAsBytesByName(fileName, options));
}
public void Revision_get_should_return_expected_result()
{
var subject = new GridFSDownloadByNameOptions { Revision = 2 };
var result = subject.Revision;
result.Should().Be(2);
}
public void DownloadToStreamByName(string fileName, Stream source, GridFSDownloadByNameOptions options = null)
{
MongoClient client = GetClient(m_connectionStr);
var db = client.GetDatabase(DatabaseName);
var bucket = new GridFSBucket(db, BucksOptions);
bucket.DownloadToStreamByName(fileName, source, options);
}
public void Revision_get_should_return_expected_result()
{
var subject = new GridFSDownloadByNameOptions {
Revision = 2
};
var result = subject.Revision;
result.Should().Be(2);
}
/// <summary>
/// 根据文件名下载文件
/// </summary>
/// <param name="filepath">保存文件的完整路径</param>
/// <param name="fileName">文件名（不含扩展名）</param>
/// <param name="collectionName">mongodb集合名</param>
public void DownLoadFileByName(string filepath, string fileName, string collectionName)
{
FileStream fileStream = new FileStream(filepath, FileMode.Append);
var bucket = new GridFSBucket(this.MongoDatabase, new GridFSBucketOptions
{
BucketName = collectionName,
ChunkSizeBytes = 358400,
WriteConcern = WriteConcern.WMajority,
ReadPreference = ReadPreference.Secondary
});
var options = new GridFSDownloadByNameOptions
{
Revision = 0
};
bucket.DownloadToStreamByName(fileName, fileStream, options);
fileStream.Close();
}
private void ParseOptions(BsonDocument options)
{
foreach (var option in options.Elements)
{
_options = _options ?? new GridFSDownloadByNameOptions();
switch (option.Name)
{
case "checkMD5":
_options.CheckMD5 = option.Value.ToBoolean();
break;
case "revision":
_options.Revision = option.Value.ToInt32();
break;
default:
throw new ArgumentException(string.Format("Invalid option name: {0}.", option.Name));
}
}
}
private void ParseOptions(BsonDocument options)
{
foreach (var option in options.Elements)
{
_options = _options ?? new GridFSDownloadByNameOptions();
switch (option.Name)
{
case "checkMD5":
_options.CheckMD5 = option.Value.ToBoolean();
break;
case "revision":
_options.Revision = option.Value.ToInt32();
break;
default:
throw new ArgumentException(string.Format("Invalid option name: {0}.", option.Name));
}
}
}
public void DownLoad()
{
using (FileStream fs = new FileStream(@"D:\gridfsDownload.jpg", FileMode.Create))
{
mongoDBService.DownloadToStream(new ObjectId("5a61a113379d582f14e750a3"), fs);
}
var b = mongoDBService.DownloadAsBytes(new ObjectId("5a61b103379d5829f89d0688"));
Console.WriteLine(Encoding.Default.GetString(b));
//异步方法
var bs = mongoDBService.DownloadAsBytesAsync(new ObjectId("5a61b103379d5829f89d0688"));
bs.Wait();
Console.WriteLine("异步的方法，获得的字符串为：" + Encoding.Default.GetString(bs.Result));
//通过文件名下载
//当多个文件的文件名相同时，可以通过指定版本来选择下载哪一个文件，默认的是-1（最新上传的版本）
//0,原始版
//1,第一版
//2,第二版
//.....
//-1,最新版
//-2,次新版
//var bN = mongoDBService.DownloadAsBytesByName("gridfsTest");
//Console.WriteLine("通过文件名，获得的字符串为：" + Encoding.Default.GetString(bN));
//指定版本
var options = new GridFSDownloadByNameOptions
{
Revision = 0
};
using (FileStream fs = new FileStream(@"D:\gridfsDownloadByName.jpg", FileMode.Create))
{
mongoDBService.DownloadToStreamByName("gridfsTest", fs, options);
}
}
public void default_constructor_should_return_expected_result()
{
var result = new GridFSDownloadByNameOptions();
result.Revision.Should().Be(-1);
}
/// <summary>
/// Downloads a file stored in GridFS and returns it as a byte array.
/// </summary>
/// <param name="filename"></param>
/// <param name="options"></param>
/// <returns></returns>
public Task <byte[]> DownloadAsBytesByNameAsync(string filename, GridFSDownloadByNameOptions options = null)
{
var bucket = new GridFSBucket(base.GetDatabase(), BucketOptions);
return(bucket.DownloadAsBytesByNameAsync(filename, options));
}
/// <summary>
/// Downloads a file stored in GridFS and writes the contents to a stream.
/// </summary>
/// <param name="filename"></param>
/// <param name="destination"></param>
/// <param name="options"></param>
/// <returns></returns>
public Task DownloadToStreamAsync(string filename, Stream destination, GridFSDownloadByNameOptions options = null)
{
var bucket = new GridFSBucket(base.GetDatabase(), BucketOptions);
return(bucket.DownloadToStreamByNameAsync(filename, destination, options));
}
public void default_constructor_should_return_expected_result()
{
var result = new GridFSDownloadByNameOptions();
result.Revision.Should().Be(-1);
}
/// <summary>
/// 下载文件
/// </summary>
/// <param name="host"></param>
/// <param name="fileName"></param>
/// <param name="destination"></param>
/// <param name="options"></param>
public static Stream DownloadFileToStreamByName(MongodbHost host, string fileName, GridFSDownloadByNameOptions options = null)
{
Stream destination = new MemoryStream();
var bucket = MongodbManager <GridFSBucket> .GetGridFSBucket(host);
bucket.DownloadToStreamByName(fileName, destination, options);
return(destination);
}
