密码的MongoDB URI连接环境变量不工作

密码的MongoDB URI连接环境变量不工作

const uri =
  "mongodb+srv://ronnlidd:...@cluster0-qfs54.mongodb.net/test?retryWrites=true";

3个点是我的密码字母，它可以正常工作，但如果我尝试这样做（dotenv已安装并在单独的文件中创建）：

。。。我收到以下错误消息：

{ Error: querySrv ENOTFOUND _mongodb._tcp.cluster0.mongodb.net
  at QueryReqWrap.onresolve [as oncomplete] (dns.js:197:19)
  errno: 'ENOTFOUND',
  code: 'ENOTFOUND',
  syscall: 'querySrv',
  hostname: '_mongodb._tcp.cluster0.mongodb.net' }
C:\CodingProjects\nodepractice\node_modules\mongodb\lib\mongo_client.js:233
    throw new MongoError('MongoClient must be connected before calling MongoClient.prototype.db');
    ^

MongoError: MongoClient must be connected before calling MongoClient.prototype.db
    at MongoClient.db (C:\CodingProjects\nodepractice\node_modules\mongodb\lib\mongo_client.js:233:11)
    at client.connect.err (C:\CodingProjects\nodepractice\index.js:52:10)
    at err (C:\CodingProjects\nodepractice\node_modules\mongodb\lib\utils.js:411:14)
    at executeCallback (C:\CodingProjects\nodepractice\node_modules\mongodb\lib\utils.js:401:25)
    at err (C:\CodingProjects\nodepractice\node_modules\mongodb\lib\operations\mongo_client_ops.js:285:21)
    at parseFn (C:\CodingProjects\nodepractice\node_modules\mongodb\lib\operations\mongo_client_ops.js:197:21)
    at QueryReqWrap.dns.resolveSrv [as callback] (C:\CodingProjects\nodepractice\node_modules\mongodb-core\lib\uri_parser.js:56:21)
    at QueryReqWrap.onresolve [as oncomplete] (dns.js:197:10)
[nodemon] app crashed - waiting for file changes before starting...

守则的内容如下： 上面定义的URI：

const MongoClient = mongodb.MongoClient;

const client = new MongoClient(uri, { useNewUrlParser: true });

下面是正在定义的URI：

const MongoClient = mongodb.MongoClient;

const client = new MongoClient(uri, { useNewUrlParser: true });

---

谢谢。

主要错误：在调用MongoClient.prototype.dbm之前必须连接MongoClient。主要错误：在调用MongoClient.prototype.db之前必须连接MongoClient