public void TestCreateZeroLengthFile()
{
gridFS.Files.RemoveAll();
gridFS.Chunks.RemoveAll();
gridFS.Chunks.ResetIndexCache();
var fileInfo = gridFS.FindOne("test");
Assert.IsNull(fileInfo);
using (var stream = gridFS.Create("test")) {
Assert.IsTrue(stream.CanRead);
Assert.IsTrue(stream.CanSeek);
Assert.IsFalse(stream.CanTimeout);
Assert.IsTrue(stream.CanWrite);
Assert.AreEqual(0, stream.Length);
Assert.AreEqual(0, stream.Position);
fileInfo = gridFS.FindOne("test");
Assert.IsTrue(fileInfo.Exists);
Assert.IsNull(fileInfo.Aliases);
Assert.AreEqual("test", fileInfo.Name);
Assert.AreEqual(gridFS.Settings.ChunkSize, fileInfo.ChunkSize);
Assert.IsNull(fileInfo.ContentType);
Assert.AreEqual(0, fileInfo.Length);
Assert.IsNull(fileInfo.MD5);
Assert.IsNull(fileInfo.Metadata);
}
fileInfo = gridFS.FindOne("test");
Assert.IsTrue(fileInfo.Exists);
Assert.AreEqual(0, fileInfo.Length);
Assert.IsNotNull(fileInfo.MD5);
}
/// <summary>
/// 字节数组方式保存文件
/// </summary>
/// <param name="fileData">数据内容</param>
/// <param name="fileName">文件名</param>
/// <param name="fileCollectionName"></param>
public virtual void SaveFileByByteArray(byte[] fileData, string fileName, string fileCollectionName)
{
try
{
if (0 == fileData.Length || string.IsNullOrEmpty(fileName) || string.IsNullOrEmpty(fileCollectionName))
{
throw new KnownException("缺失必需数据，无法保存数据！");
}
MongoGridFSSettings fsSetting = new MongoGridFSSettings()
{
Root = fileCollectionName
};
//MongoGridFS fs = new MongoGridFS(_database, fsSetting); // 将被遗弃的方法
MongoGridFS fs = new MongoGridFS(_server, _database.Name, fsSetting);
MongoGridFSCreateOptions option = new MongoGridFSCreateOptions {
UploadDate = DateTime.Now
};
using (MongoGridFSStream gfs = fs.Create(fileName, option))
{
gfs.Write(fileData, 0, fileData.Length);
gfs.Close();
}
}
catch (Exception ex)
{
throw ex;
}
// 设定查询集合的名称
}
/// <summary>
/// 保存报表结果
/// </summary>
/// <param name="savsString"></param>
/// <param name="rootName"></param>
/// <param name="fileName"></param>
/// <returns></returns>
public void SaveFileToMongoDb(string fileName, string savsString, string rootName)
{
//BsonDocument doc = new BsonDocument();
//doc.Add("UserID", 1L);
//option.Metadata = doc;
MongoGridFS gf = GetGridFs(Dbname, rootName);
using (MongoGridFSStream gfs = gf.Create(fileName, new MongoGridFSCreateOptions()
{
UploadDate = DateTime.Now
}))
{
byte[] bytes = Encoding.UTF8.GetBytes(savsString);
gfs.Write(bytes, 0, bytes.Length);
}
}