无法从Node.js连接到MongoDB

Question

我正在尝试连接到我的MongoDB数据库，但是我收到以下错误消息：

AssertionError
actual: null
expected: RangeError: Maximum call stack size exceeded at isUndefined (<anonymous>:2748:21) at Object.exports.deprecate (<anonymous>:2330:7) at <anonymous>:2332:22 at <anonymous>:2332:41 at <anonymous>:2332:41 at <anonymous>:2332:41 at <anonymous>:2332:41 at <anonymous>:2332:41 at <anonymous>:2332:41 at <anonymous>:2332:41
generatedMessage: true
message: "null == [RangeError: Maximum call stack size exceeded]"
name: "AssertionError"
operator: "=="
stack: "AssertionError: null == [RangeError: Maximum call stack size exceeded]↵    at <anonymous>:73719:10↵    at err (<anonymous>:71483:14)↵    at executeCallback (<anonymous>:71472:25)↵    at executeOperation (<anonymous>:71490:7)↵    at MongoClient.connect (<anonymous>:64885:10)↵    at Object.274.assert (<anonymous>:73718:8)↵    at o (<anonymous>:1:265)↵    at r (<anonymous>:1:431)↵    at <anonymous>:1:460↵    at m (http://localhost/mudfeval-mobile/public/src/js/jquery-3.3.1.min.js:2:711)"
__proto__: Error
constructor: ƒ AssertionError(options)
__proto__: Object

也许你会因为没有检查并重复使用以前的主题而谴责我。但尽管问题相似，但没有一个与我的案例相符。

对于连接，我正在学习本教程：http://mongodb.github.io/node-mongodb-native/3.1/quick-start/quick-start/（查看“连接到MongoDB”）：

const MongoClient = require('mongodb').MongoClient;
const assert = require('assert');

// Connection URL
const url = "mongodb://secretoes:[email protected]:27017,mudfeval-shard-00-01-uxnqk.gcp.mongodb.net:27017,mudfeval-shard-00-02-uxnqk.gcp.mongodb.net:27017/test?ssl=true&replicaSet=mudfeval-shard-0&authSource=admin&retryWrites=true";;

// Database Name
const dbName = 'moodle';

// Create a new MongoClient
const client = new MongoClient(url);

// Use connect method to connect to the Server
client.connect(function(err) {
  assert.equal(null, err);
  console.log("Connected successfully to server");

  const db = client.db(dbName);

  client.close();
});

有人说过，有人可以帮帮我吗？我什么都找不到。我很困惑。

=============更新（11/8/2018 - 01:11 pm UTC + 1）

如果我通过控制台运行脚本，我没有问题。但是我收到了一个弃用警告，要求我使用新的解析器。

因此，当我在这些更改后在Web浏览器上运行它时，错误消息如下：

VM188:1932 Uncaught 
AssertionError {name: "AssertionError", actual: null, expected: TypeError: qs.unescape is not a function
    at parseConnectionString (<anonymous>:52229:75)
    at …, operator: "==", message: "null == [TypeError: qs.unescape is not a function]", …}
actual: null
expected: TypeError: qs.unescape is not a function at parseConnectionString (<anonymous>:52229:75) at connect (<anonymous>:68112:3) at connectOp (<anonymous>:68216:3) at executeOperation (<anonymous>:71488:24) at MongoClient.connect (<anonymous>:64885:10) at Object.274.assert (<anonymous>:73718:8) at o (<anonymous>:1:265) at r (<anonymous>:1:431) at <anonymous>:1:460 at m (http://localhost/mudfeval-mobile/public/src/js/jquery-3.3.1.min.js:2:711)
generatedMessage: true
message: "null == [TypeError: qs.unescape is not a function]"
name: "AssertionError"
operator: "=="
stack: "AssertionError: null == [TypeError: qs.unescape is not a function]↵    at <anonymous>:73719:10↵    at err (<anonymous>:71483:14)↵    at executeCallback (<anonymous>:71472:25)↵    at executeOperation (<anonymous>:71490:7)↵    at MongoClient.connect (<anonymous>:64885:10)↵    at Object.274.assert (<anonymous>:73718:8)↵    at o (<anonymous>:1:265)↵    at r (<anonymous>:1:431)↵    at <anonymous>:1:460↵    at m (http://localhost/mudfeval-mobile/public/src/js/jquery-3.3.1.min.js:2:711)"
__proto__: Error

是因为browserify吗？

Answer 1

从您的更新中我可以尝试使用Browserify通过Web浏览器直接连接到MongoDB。

我不认为这会奏效。与MongoDB的连接是通过TCP连接完成的，无法从浏览器获得，或者更准确：我非常怀疑使用Browserify就这么简单，一切正常。在您的浏览器中可能没有连接到MongoDB的驱动程序或许多其他先决条件当然不是我想到的。

看到这个是一个合适的答案：Connecting to mongodb through the browser?