如何修复“MongoError：数据库名称不能包含字符'/'”答案

【问题标题】：How to fix "MongoError: database names cannot contain the character '/' "如何修复“MongoError：数据库名称不能包含字符'/'”
【发布时间】：2019-09-17 16:01:34
【问题描述】：

我是 MongoDB 和 GraphQL 的新手。我尝试学习本教程https://www.djamware.com/post/5c75d68880aca754f7a9d1ed/node-express-angular-7-graphql-and-mongodb-crud-web-app 并陷入第二步（MongoDB 连接）。这是错误： Error1 Error2

这是我的 app.js：

var createError = require('http-errors');
var express = require('express');
var path = require('path');
var cookieParser = require('cookie-parser');
var logger = require('morgan');

var indexRouter = require('./routes/index');
var usersRouter = require('./routes/users');

var app = express();

//declare the Mongoose module
var mongoose = require('mongoose');

//Create a connection to the MongoDB server
mongoose.connect('mongodb://localhost/GraphQL/node-graphql', { promiseLibrary: require('bluebird'), useNewUrlParser: true })
  .then(() =>  console.log('connection successful'))
  .catch((err) => console.error(err));

// view engine setup
app.set('views', path.join(__dirname, 'views'));
app.set('view engine', 'jade');

app.use(logger('dev'));
app.use(express.json());
app.use(express.urlencoded({ extended: false }));
app.use(cookieParser());
app.use(express.static(path.join(__dirname, 'public')));

app.use('/', indexRouter);
app.use('/users', usersRouter);

// catch 404 and forward to error handler
app.use(function(req, res, next) {
  next(createError(404));
});

// error handler
app.use(function(err, req, res, next) {
  // set locals, only providing error in development
  res.locals.message = err.message;
  res.locals.error = req.app.get('env') === 'development' ? err : {};

  // render the error page
  res.status(err.status || 500);
  res.render('error');
});

module.exports = app;

如何解决该错误？我真的卡住了

【问题讨论】：

连接 uri 看起来不正确，如果您没有更改 mongodb 端口，请尝试 mongodb://localhost:27107/node-graphql
@1556089774 我将 node-graphl 文件夹放在 GraphQL 文件夹中。这是允许的吗？我已经尝试了你的建议，这就是我得到的{ Error: connect ECONNREFUSED 127.0.0.1:27107 at TCPConnectWrap.afterConnect [as oncomplete] (net.js:1104:14) errno: 'ECONNREFUSED', code: 'ECONNREFUSED', syscall: 'connect', address: '127.0.0.1', port: 27107 }
不是文件夹布局的问题，node-graphql这里指的是db名称docs.mongodb.com/manual/reference/connection-string
在你的命令行输入mongo看看你是否可以访问，否则你的mongodb服务器没有运行
@1556089774 我已经在命令行MongoDB shell version v4.0.9 connecting to: mongodb://127.0.0.1:27017/?gssapiServiceName=mongodb Implicit session: session { "id" : UUID("b073fff9-051f-47a3-889d-48a505b35eae") } MongoDB server version: 4.0.9 中打开了mongo，但当我在命令行中运行“npm start”时仍然出现此错误（{ Error: connect ECONNREFUSED 127.0.0.1:27107 at TCPConnectWrap.afterConnect [as oncomplete] (net.js:1104:14) errno: 'ECONNREFUSED', code: 'ECONNREFUSED', syscall: 'connect', address: '127.0.0.1', port: 27107 }）

标签： node.js mongodb express mongoose graphql

【解决方案1】：

感谢您的帮助。我错过了访问数据库的特权。当我跑 mongod.exe --dbpath "C:\xampp\htdocs\GraphQL\node-graphql\mongodb\data" 我收到此错误

2019-04-29T10:37:08.554+0700 I CONTROL  [initandlisten] ** WARNING: Access control is not enabled for the database.
2019-04-29T10:37:08.557+0700 I CONTROL  [initandlisten] **          Read and write access to data and configuration is unrestricted.

然后我尝试这个解决方案MongoDB: Server has startup warnings ''Access control is not enabled for the database''，当我再次启动npm时连接成功

【讨论】：