MongoDB stores small binary files

        MongoClient mongoClient = new MongoClient("192.168.128.145",27017);

        MongoDatabase db = mongoClient.getDatabase("test");
//        Document document = new Document();
//        InputStream is = new FileInputStream("d:\\cloud_sql.sql");
//        byte [] bytes = IOUtils.toByteArray(is);
//        is.close();
//        Binary bsonValue = new Binary(bytes);
//        document.put("img",bsonValue);
//        document.put("fileName","mysql");
//        db.getCollection("mycoll").insertOne(document);
//        db.getCollection("mycoll").drop();
//        FindIterable<Document> tDocuments =  db.getCollection("mycoll").find();
        FindIterable<Document> tDocuments  = db.getCollection("mycoll").find(new Document("fileName", "mysql"));
        tDocuments.forEach(new Block<Document>() {

            public void apply(final Document document) {
                System.out.println(document);
                Binary bsonValue1=  document.get("img",Binary.class);
                byte[] dd = bsonValue1.getData();
                try {
                    String t = new String(dd,"utf-8");
                    System.out.print(t);
                } catch (UnsupportedEncodingException e) {
                    e.printStackTrace ();
                }

            }
        });
    }