我目前正在通过以下教程学习如何通过mongodb API使用Azure的cosmosdb: https://docs.microsoft.com/en-us/azure/cosmos-db/tutorial-develop-mongodb-react
本教程完成的repo在这里:https://github.com/Azure-Samples/react-cosmosdb但到目前为止,我只是在第5部分,你实际上尝试连接到cosmos数据库。
我遇到了mongoose版本的问题,并用以下内容替换了回购代码:Error connecting to Azure: Illegal character in password with mongoose 5.0.1 but works in 4.13.9
我还将我所需的mongodb版本降级为2.2.33,因为似乎较新版本的mongo不起作用。 (参见底部的评论:https://docs.microsoft.com/en-us/azure/cosmos-db/mongodb-mongoose)
这两个似乎解决了我的一些错误,但是我仍然坚持如何解决以下问题:
{ MongoError: failed to connect to server [react-cosmos-db-tori.documents.azure.com:10255] on first connect [MongoError: connection 0 to react-cosmos-db-tori.documents.azure.com:10255 timed out]
[1] at Pool.<anonymous> (/Users/vhenri/Documents/dev/azure-app-service/azure-heros/server/node_modules/mongoose/node_modules/mongodb-core/lib/topologies/server.js:336:35)
[1] at emitOne (events.js:116:13)
[1] at Pool.emit (events.js:211:7)
[1] at Connection.<anonymous> (/Users/vhenri/Documents/dev/azure-app-service/azure-heros/server/node_modules/mongoose/node_modules/mongodb-core/lib/connection/pool.js:280:12)
[1] at Object.onceWrapper (events.js:317:30)
[1] at emitTwo (events.js:126:13)
[1] at Connection.emit (events.js:214:7)
[1] at TLSSocket.<anonymous> (/Users/vhenri/Documents/dev/azure-app-service/azure-heros/server/node_modules/mongoose/node_modules/mongodb-core/lib/connection/connection.js:199:10)
[1] at Object.onceWrapper (events.js:313:30)
[1] at emitNone (events.js:106:13)
[1] at TLSSocket.emit (events.js:208:7)
[1] at TLSSocket.Socket._onTimeout (net.js:407:8)
[1] at ontimeout (timers.js:475:11)
[1] at tryOnTimeout (timers.js:310:5)
[1] at Timer.listOnTimeout (timers.js:270:5)
[1] name: 'MongoError',
[1] message: 'failed to connect to server [react-cosmos-db-tori.documents.azure.com:10255] on first connect [MongoError: connection 0 to react-cosmos-db-tori.documents.azure.com:10255 timed out]' }
据我所知,这只是暂停,因为它无法连接到我的数据库。
这是我的代码:
const mongoose = require('mongoose');
const env = require('./env/environment');
mongoose.Promise = global.Promise;
function connect() {
return(
mongoose.connect('mongodb://react-cosmos-db-tori.documents.azure.com:10255/react-cosmos-db-tori?ssl=true', {
auth: {
user: 'react-cosmos-db-tori',
password: '<mypasswordhere>'
}
})
.then(() => console.log('connection successful'))
.catch((err) => console.log(err))
)
}
module.exports = {
connect,
mongoose
};
这是我的package.json:
{
"name": "express-react-starter",
"version": "0.1.0",
"private": true,
"dependencies": {
"body-parser": "^1.17.2",
"cookie-parser": "^1.4.3",
"debug": "~2.6.3",
"express": "^4.15.3",
"jade": "^1.11.0",
"mongodb": "^2.2.33",
"mongoose": "^5.0.7",
"morgan": "^1.8.2",
"react": "^15.6.1",
"react-dom": "^15.6.1"
},
"devDependencies": {
"concurrently": "^3.5.0",
"nodemon": "^1.12.0",
"react-scripts": "1.0.10"
},
"scripts": {
"start": "concurrently \"react-scripts start\" \"nodemon server/server.js\"",
"build": "react-scripts build && mv build server",
"test": "react-scripts test --env=jsdom",
"eject": "react-scripts eject"
},
"proxy": "http://localhost:3001"
}
我在开始时也遇到以下错误:
DeprecationWarning: `open()` is deprecated in mongoose >= 4.11.0, use `openUri()` instead, or set the `useMongoClient` option if using `connect()` or `createConnection()`. See http://mongoosejs.com/docs/connections.html#use-mongo-client
当我尝试刷新我希望看到空数组的页面时,我只看到一个chrome错误:localhost didn’t send any data. ERR_EMPTY_RESPONSE
并且控制台中显示以下内容:GET /api/heroes - - ms - -
我不喜欢上面没有大的MongoError。但我也没有得到“连接成功”。
我当时认为这可能是我在连接网址中作为数据库名称放置的问题,所以我创建了一个名为heroes_test的集合并尝试使用mongodb://react-cosmos-db-tori.documents.azure.com:10255/heroes_test?ssl=true
,但同样的事情发生了。
任何人都知道这里发生了什么?我可能使用承诺错了吗? 任何帮助,将不胜感激!
答案 0 :(得分:2)
对于任何可能偶然遇到这个类似问题的人,我终于明白了!问题出在我工作的防火墙上 - 它阻止了我与CosmosDB的连接。当我从我的家庭互联网上尝试它时,它工作正常。