可以使用该方法运行所有原始数据库操作。

 public static void main(String[] args) {
        // Replace the uri string with your MongoDB deployment's connection string
        String uri = "mongodb://localhost:27017/";

        try (MongoClient mongoClient = MongoClients.create(uri)) {

            MongoDatabase database = mongoClient.getDatabase("mytest");
            try {
                Bson command = new BsonDocument("dbStats", new BsonInt64(1));
                Document commandResult = database.runCommand(command);
                System.out.println("dbStats: " + commandResult.toJson());
            } catch (MongoException me) {
                System.err.println("An error occurred: " + me);
            }
        }
    }