希望存儲圖像GridFS的從給定的URL

Question

是否有可能存儲圖像蒙戈GridFS的直接形成的URL，這是我從API得到什麼？或者我必須在本地存儲它，然後將它插入到mongo中？

我試圖直接從URL插入，但C＃司機給我，URI不受支持的錯誤..

Answer 1

的MongoGridFS類實現.NET的流API，所以你應該能夠使用MemoryStream保存Web響應並插入到GridFS中。

try 
{ 
    var server = MongoServer.Create("mongodb://192.168.1.8:27017/imgdb?safe=true"); 
    var db = server.GetDatabase("imgdb"); 

    string fileName = "logo-mongodb.png"; 

    // Get image from URL or API  
    WebRequest req = WebRequest.Create("http://media.mongodb.org/" + fileName); 
    WebResponse response = req.GetResponse(); 
    Console.WriteLine("Response length is " + response.ContentLength + " bytes"); 

    // Copy from WebResponse to MemoryStream 
    MemoryStream memStream; 
    using (Stream responseStream = response.GetResponseStream()) 
    { 
     memStream = new MemoryStream(); 

     byte[] buffer = new byte[1024]; 
     int byteCount; 
     do 
     { 
      byteCount = responseStream.Read(buffer, 0, buffer.Length); 
      memStream.Write(buffer, 0, byteCount); 
     } while (byteCount > 0); 
     responseStream.Close(); 
    } 

    // Reset to beginning of stream 
    memStream.Seek(0, SeekOrigin.Begin); 

    // Save to GridFS  
    var gridFsInfo = db.GridFS.Upload(memStream, fileName); 

    // Success! 
    Console.WriteLine("Success!"); 
} 
catch (Exception err) 
{ 
    Console.WriteLine("Something went wrong: "+err.Message); 
}