Node.js mongodb 设置默认安全变量

我正在尝试在本地运行 Node.js 脚本，但它给了我以下错误消息：

========================================================================================
=  Please ensure that you set the default safe variable to one of the                  =
=   allowed values of [true | false | {j:true} | {w:n, wtimeout:n} | {fsync:true}]     =
=   the default value is false which means the driver receives does not                =
=   return the information of the success/error of the insert/update/remove            =
=                                                                                      =
=   ex: new Db(new Server('localhost', 27017), {safe:false})                           =
=                                                                                      =
=   http://www.mongodb.org/display/DOCS/getLastError+Command                           =
=                                                                                      =
=  The default of false will change to true in the near future                         =
=                                                                                      =
=  This message will disappear when the default safe is set on the driver Db           =
========================================================================================

这是我的变量：

var express = require('express');

var mongodb = require('mongodb');
var GridStore = require('mongodb').GridStore;
var Db = require('mongodb').Db;
var Server = require('mongodb').Server;
var db = new Db(Config.dbName, new Server("127.0.0.1", 27017, {}), {});    

var HttpGet = require('./httpGet').HttpGet;
var URL = require('url');

var dbClient = null; // this is initialized when db is opened
var app = module.exports = express();

相同的脚本在我的实时服务器上运行良好。仅当我在本地运行它时，它才会出现。

我发现 github 上正在讨论同样的问题，但没有找到解决方案。https://github.com/kissjs/node-mongoskin/issues/77 https://github.com/kissjs/node-mongoskin/issues/77

有谁知道什么可能导致这个问题？

提前致谢 ：）

使用 1.1.11 mongo 驱动程序，以下内容适用于我：

var db = new Db(Config.dbName, new Server("127.0.0.1", 27017, {}), {safe: true});

如果没有{safe: true}参数我确实得到了与您在问题中显示的相同的警告。

该警告是驱动程序最近添加的；您可能在服务器上使用旧版本的驱动程序，这就是您看不到警告的原因。