已解決, 寫了一個DemoNoteAngular 向服務端發送 Http 請求準備工作ng generate component simpleapp.component.html<app-simple></app-simple>server.jsconst express = require('express')const app = express()const port = 3000app.get('/book/get', (req, res) => { // 允許跨域請求 res.header('Access-Control-Allow-Origin', '*') // 獲取請求數據 const bookId = req.query.bookId // 響應數據 res.send({ id: bookId, title: 'Java', price: 50.0 })})// -> http://localhost:3000/book/get?bookId=123 -> {"id":"123","title":"Java","price":50}app.listen(port, () => { console.log(`Example app listening at http://localhost:${port}`)})最簡單