/// <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>
/// 读取报表结果
/// </summary>
/// <param name="filename"></param>
/// <param name="rootName"></param>
/// <returns></returns>
public string ReadFileFromMongoDb(string filename, string rootName)
{
string tablestr;
MongoGridFS fs = GetGridFs(Dbname, rootName);
MongoGridFSFileInfo gfInfo = new MongoGridFSFileInfo(fs, filename);
using (MongoGridFSStream gfs = gfInfo.OpenRead())
{
using (TextReader reader = new StreamReader(gfs, Encoding.UTF8))
{
tablestr = reader.ReadToEnd();
}
}
return(tablestr);
}
/// <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);
}
}
public void TestReadAllGridFS2Text()
{
var server = MongoServer.Create("mongodb://localhost:27017");
var db = server.GetDatabase("dcm");
var gridSettings = new MongoGridFSSettings();
MongoGridFS fs = db.GetGridFS(gridSettings);
var fileInfo = fs.Find(Query.EQ("filename", "D:\\Download\\FileTestUpload\\Hello2.txt"));
int index = 0;
foreach (var item in fileInfo)
{
MongoGridFSStream readerFS = item.Open(System.IO.FileMode.Open);
StreamReader reader = new StreamReader(readerFS);
string text = reader.ReadToEnd();
Console.WriteLine("####### {0}", ++index);
Console.WriteLine(text);
}
}
public void TestReadGridFS2Array()
{
var server = MongoServer.Create("mongodb://localhost:27017");
var db = server.GetDatabase("dcm");
var where = Query.EQ("md5", "cac1807172774be5d48937cee90c9e84");
MongoGridFS fs = db.GridFS;
MongoGridFSFileInfo fileInfo = fs.FindOne(where);
MongoGridFSStream readerFS = fileInfo.Open(System.IO.FileMode.Open);
List <byte> readByte = new List <byte>();
int bufferSize = 4048;
byte[] buffer = new byte[bufferSize];
int readCount = readerFS.Read(buffer, 0, bufferSize);
while (readCount > 0)
{
readByte.AddRange(buffer.Take(readCount).ToArray());
readCount = readerFS.Read(buffer, 0, bufferSize);
}
}
/// <summary>
/// 获取流
/// </summary>
/// <param name="remoteFile"></param>
/// <returns></returns>
public byte[] GetBytes(string remoteFile)
{
_logger.DebugFormat("Get Stream by Id {0}", remoteFile);
try
{
MongoGridFS fs = new MongoGridFS(_context.DataBase);
byte[] bytes;
using (MongoGridFSStream gfs = fs.OpenRead(remoteFile))
{
bytes = new Byte[gfs.Length];
gfs.Read(bytes, 0, bytes.Length);
}
return(bytes);
}
catch (Exception ex)
{
_logger.Error(ex.Message);
_logger.Error(ex.StackTrace);
throw;
}
}
