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[英]cPanel Node.js app cannot connect to MongoDB Atlas cluster but works on Heroku
[英]Node.js app cannot connect to MongoDB Atlas cluster
錯誤:服務器在端口 5000 上以開發模式運行 errorMongoParseError:不支持選項 usecreateindex [nodemon] 應用程序崩潰 - 在啟動前等待文件更改...
數據庫.js
const connectDB = async () => {
try {
const conn = await mongoose.connect(process.env.MONGO_URI, {
useUnifiedTopology: true,
useNewUrlParser: true,
useCreateIndex: true,
});
console.log(`MongoDB connected :${conn.connection.host}`);
} catch (error) {
console.error(`error${error}`);
process.exit(1);
}
};
export default connectDB;
服務器.js
import express from "express";
import dotenv from "dotenv";
import connectDB from './config/db.js'
import products from './data/products.js'
dotenv.config();
connectDB()
const app = express();
app.get("/", (req, res) => {
res.send("api is running... ");
});
app.get("/api/products", (req, res) => {
res.json(products);
});
app.get("/api/products/:id", (req, res) => {
const product = products.find(p => p._id === req.params.id);
res.json(product);
});
const PORT = process.env.PORT || 5000
app.listen(PORT, console.log(`server running in ${process.env.NODE_ENV} mode on port ${PORT}`));
Mongoose 文檔
useNewUrlParser、useUnifiedTopology、useFindAndModify 和 useCreateIndex 不再是受支持的選項。 ZCCADCDEDB567ABAE643E15DCF0974E503Z 6 總是表現得好像 useNewUrlParser、useUnifiedTopology 和 useCreateIndex 為 true,而 useFindAndModify 為 false。 請從您的代碼中刪除這些選項。
數據庫.js
const connectDB = async () => {
try {
const conn = await mongoose.connect(process.env.MONGO_URI, {
// useUnifiedTopology: true, <-- no longer necessary
// useNewUrlParser: true, <-- no longer necessary
// useCreateIndex: true, <-- no longer necessary
});
console.log(`MongoDB connected :${conn.connection.host}`);
} catch (error) {
console.error(`error${error}`);
process.exit(1);
}
};
export default connectDB;
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