Question

大家。我正在为MongoDB 2.x安排一个MongoDB课程，并且我遇到了Q＆amp; A中未解决的问题。这门课程或多或少被遗弃了，所以教师和许多学生都没有积极参与其中。

我正在尝试构建一个使用Mongo的非常简单的Socket.io聊天应用。到目前为止，我只有一个server.js文件和一个node_modules文件夹，基本上就是这样。我的server.js文件如下：

  1 const mongo = require('mongodb').MongoClient;
  2 const client = require('socket.io').listen(3000).sockets;
  3 
  4 mongo.connect( /* 'mongodb://127.0.0.1/mongochat',*/ { useNewUrlParser: true }, (err, db) => {
  5     if(err) {
  6         throw err;
  7     }
  8     console.log("The server has started and MongoDB is currently connected.");
  9     client.on('connection', (socket) => {
 10         //
 11     });
 12 });

在第4行，我尝试使用＆＃34; mongodb：//127.0.0.1/mongochat"取消注释并离开，并且没有＆＃34; useNewUrlParser＆＃34;部分，因为在课程中，它最初表示为：

mongo.connect( 'mongodb://127.0.0.1/mongochat', (err, db) => { //etc. etc.

这两种尝试都没有奏效。我得到的错误信息是：

/home/ktaherig/Videos/Dev/Traversy Media/MongoDB Projects/SocketChat/server.js:6
        throw err;
        ^

Error: URL malformed, cannot be parsed
    at module.exports (/home/ktaherig/Videos/Dev/Traversy Media/MongoDB Projects/SocketChat/node_modules/mongodb/lib/url_parser.js:17:21)
    at deprecated (internal/util.js:53:15)
    at connect (/home/ktaherig/Videos/Dev/Traversy Media/MongoDB Projects/SocketChat/node_modules/mongodb/lib/mongo_client.js:980:3)
    at connectOp (/home/ktaherig/Videos/Dev/Traversy Media/MongoDB Projects/SocketChat/node_modules/mongodb/lib/mongo_client.js:323:3)
    at executeOperation (/home/ktaherig/Videos/Dev/Traversy Media/MongoDB Projects/SocketChat/node_modules/mongodb/lib/utils.js:420:24)
    at MongoClient.connect (/home/ktaherig/Videos/Dev/Traversy Media/MongoDB Projects/SocketChat/node_modules/mongodb/lib/mongo_client.js:314:10)
    at Function.MongoClient.connect (/home/ktaherig/Videos/Dev/Traversy Media/MongoDB Projects/SocketChat/node_modules/mongodb/lib/mongo_client.js:536:22)
    at Object.<anonymous> (/home/ktaherig/Videos/Dev/Traversy Media/MongoDB Projects/SocketChat/server.js:4:7)
    at Module._compile (internal/modules/cjs/loader.js:654:30)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:665:10)

我无法弄清楚我做错了什么。

MongoDB 3.6.4＆＃34; throw err＆＃34;无法识别，无法解析网址

0 个答案: