卷曲：无法连接到本地主机端口8080：连接被拒绝

Question

当我在终端中使用此Curl命令时：

curl -X POST -H "Content-Type: application/json" localhost:8080/api/v1/quote/car-insurance --data '{"car_value": 20000.0, "driver_birthdate": "15/10/1990"}'

我在终端中收到以下错误消息：

Curl: failed to connect to localhost port 8080: Connection refused

有人可以向我解释为什么拒绝连接吗？

---

app.js

const express = require("express")
const bodyParser = require("body-parser")

const insuranceQuoteRoutes = require("./routes/insuranceQuotes")

const app = express()

app.use(bodyParser.json())

app.use("/api", insuranceQuoteRoutes)

app.listen(8080)

module.exports = app

---

insuranceQuotes.js

const express = require("express")
const {body, validationResult} = require("express-validator");

const insuranceQuoteController = require("../controllers/insuranceQuotesControllers")

const router = express.Router()

//carDateRegex: https://www.regextester.com/99555
const carDateRegex = /^([0-2][0-9]|(3)[0-1])(\/)(((0)[0-9])|((1)[0-2]))(\/)\d{4}$/

//Express-validator: https://express-validator.github.io/docs/
router.post("/v1/quote/car-insurance", [
    body("car_value").isFloat(),
    body("driver_birthdate").matches(carDateRegex)
], insuranceQuoteController.postInsuranceQuotes);

module.exports = router