nodejs連線MongoDB資料庫執行時報錯
阿新 • • 發佈:2021-01-31
技術標籤:node.js
解決:(node:13080) DeprecationWarning: current URL string parser is deprecated, and will be removed in a future version.
用node連結mongo出現警告資訊:
(node:13080) DeprecationWarning: current URL string parser is deprecated, and will be removed in a future version. To use the new parser, pass option { useNewUrlParser: true } to MongoClient.connect.
node --trace-deprecation ...
to show where the warning was created)(node:13080) DeprecationWarning: current Server Discovery and Monitoring engine is deprecated, and will be removed in a future version. To use the new Server Discover and Monitoring engine, pass option { useUnifiedTopology: true } to the MongoClient constructor.
解決:(節點:13080)不推薦使用警告:當前的URL字串分析器已不推薦使用,將在將來的版本中刪除。要使用新的解析器,請將選項{useNewUrlParser:true}傳遞給MongoClient.connect連線.
(節點:13080)棄用警告:當前伺服器發現和監視引擎已棄用,將在將來的版本中刪除。要使用新的伺服器發現和監視引擎,請將選項{useUnifiedTopology:true}傳遞給MongoClient建構函式。
// 引入mongoose模組
const mongoose = require('mongoose');
mongoose.connect('mongodb://localhost/playground' )
.then(() => console.log('資料庫連線成功'))
.catch(err => console.log('資料庫連線失敗', err))
報錯:
解決方法:將{ useNewUrlParser: true }和{ useUnifiedTopology: true }作為引數傳遞進去
const mongoose = require('mongoose');
mongoose.connect('mongodb://localhost/playground', {
useNewUrlParser: true, useUnifiedTopology: true })
.then(() => console.log('資料庫連線成功'))
.catch(err => console.log('資料庫連線失敗', err))
剛開始學node.js,把遇到的錯誤記錄下來,以後忘記了再回來看