我是 mongooseDB 的新手，我正在嘗試將此 API 中的資料插入到資料庫中，它創建了 Collection 但不是檔案，知道我做錯了什么嗎？
import fetch from 'node-fetch';
import mongoose, { mongo } from 'mongoose';
mongoose.connect("mongodb://localhost/highscore");
const postSchema = new mongoose.Schema({
position: {
type: Number,
required: true
},
id: {
type: Number,
required: true
},
score: {
type: Number,
required: true
},
});
const Post = mongoose.model('Players', postSchema);
async function getPlayers() {
const getPlayers = await fetch("http://localhost:3008/api/highscore/players");
const response = await getPlayers.json();
for (let i = 0; i < response.lenght; i ) {
const post = new Post({
position: response[i]['position'],
id: response[i]['id'],
score: response[i]['score'],
});
post.save()
}
}
getPlayers();```
uj5u.com熱心網友回復：
MongoDB 提供了 Api 來同時插入多個檔案，示例如下。
// check if your mongoDb is connected
mongoose.connect(URI).then(err => {
if(err) console.error({err});
else console.info("Database Connected");
});
async function getPlayers() {
const getPlayers = await fetch("http://localhost:3008/api/highscore/players");
try{
const response = await getPlayers.json();
// And then check if you are getting players
console.log({response});
const posts = response.map((player) => ({
position: player['position'],
id: player['id'],
score: player['score'],
}))
// it's not required to await it, just to be sure it did insert
await Post.insertMany(posts);
}catch(error){
console.log({error})
}
}uj5u.com熱心網友回復：
這一行：
對于（讓 i = 0；i < response.lenght；i ）{
回應長度
現在你的陣列是空的，所以保存永遠不會發生
編輯
你確定進口？以下代碼有效：
//const fetch = require('fetch');
const mongoose = require('mongoose');
mongoose.connect("mongodb://localhost/highscore");
const postSchema = new mongoose.Schema({
position: {
type: Number,
required: true
},
id: {
type: Number,
required: true
},
score: {
type: Number,
required: true
},
});
const Post = mongoose.model('Players', postSchema);
async function getPlayers() {
/*
const getPlayers = await fetch("http://localhost:3008/api/highscore/players");
const response = await getPlayers.json();
for (let i = 0; i < response.lenght; i ) {
*/
const post = new Post({
position: '12',
id: '15',
score: '300',
});
post.save()
} //} getPlayers();
uj5u.com熱心網友回復：
默認情況下 mongodb 在 localhost: 27017 上運行
檢查您的 mongodb 連接網址
mongoose.connect('mongodb://localhost:27017/highscore')
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