[英]net::ERR_CONNECTION_REFUSED when trying to make a post request in node js
我正在嘗試使用 fetch 發出發布請求。 通常當我使用npm start
啟動我的服務器時,它工作得很好。 但是使用 webpack 開發服務器它給了我這個錯誤:
這是我的服務器端代碼:
require('dotenv').config();
const mockAPIResponse = require('./mockAPI.js')
const PORT = 8081
const apiKey = process.env.API_KEY
const baseUrl = 'https://api.meaningcloud.com/sentiment-2.1'
const express = require('express')
const cors = require('cors')
const bodyParser = require('body-parser')
const fetch = require('node-fetch')
var path = require('path')
const app = express();
app.use(cors())
app.use(bodyParser.json())
app.use(bodyParser.urlencoded({ extended: false }))
app.use(express.static('dist'))
app.get('/', function(req, res) {
res.sendFile('dist/index.html')
//res.sendFile(path.resolve('src/client/views/index.html'))
})
app.post('/api', async(req, res) => {
console.log("you key is", apiKey)
const enteredUrl = req.body.url;
const apiUrl = baseUrl + '?key=' + apiKey + '&url=' + enteredUrl + '&lang=en'
console.log(apiUrl)
const response = await fetch(apiUrl)
try {
const fetchedData = await response.json()
console.log(fetchedData)
res.send(fetchedData)
} catch (error) {
console.log("error", error)
}
})
app.get('/test', function(req, res) {
res.send(mockAPIResponse)
})
// designates what port the app will listen to for incoming requests
app.listen(PORT, (error) => {
if (error) throw new Error(error)
console.log(`Server listening on port ${PORT}!`)
})
我的 package.json:
{
"name": "evaluate-news-nlp",
"version": "0.0.1",
"main": "index.js",
"scripts": {
"test": "jest",
"start": "nodemon src/server/index.js",
"build-prod": "webpack --config webpack.prod.js",
"build-dev": "webpack-dev-server --config webpack.dev.js --open"
},
"keywords": [],
"author": "Alaa",
"description": "",
"dependencies": {
"2": "^3.0.0",
"@babel/runtime": "^7.16.7",
"axios": "^0.21.1",
"babel-polyfill": "^6.26.0",
"body-parser": "^1.19.0",
"cors": "^2.8.5",
"dotenv": "^8.6.0",
"express": "^4.17.1",
"node-fetch": "^2.6.1",
"sass": "^1.45.1",
"webpack": "^4.44.2",
"webpack-cli": "^3.3.5"
},
"devDependencies": {
"@babel/core": "^7.5.4",
"@babel/plugin-transform-runtime": "^7.16.7",
"@babel/preset-env": "^7.5.4",
"@types/jest": "^26.0.20",
"babel-core": "^6.26.3",
"babel-loader": "^8.0.6",
"babel-plugin-transform-runtime": "^6.23.0",
"babel-polyfill": "^6.26.0",
"babel-preset-es2015": "^6.24.1",
"babel-preset-stage-0": "^6.24.1",
"clean-webpack-plugin": "^3.0.0",
"css-loader": "^5.1.2",
"file-loader": "^6.1.1",
"html-webpack-plugin": "^3.2.0",
"jest": "^26.5.3",
"mini-css-extract-plugin": "^0.9.0",
"nodemon": "^2.0.7",
"optimize-css-assets-webpack-plugin": "^5.0.4",
"prettier": "^2.2.1",
"sass": "^1.45.2",
"sass-loader": "^10.1.1",
"style-loader": "^2.0.0",
"supertest": "6.1.3",
"terser-webpack-plugin": "^1.4.5",
"webpack-dev-server": "^3.7.2",
"workbox-webpack-plugin": "^6.1.1"
}
}
Webpack 開發服務器工作正常,直到我嘗試發出發布請求。 我嘗試了不同版本的 webpacks、webpack 開發服務器、node-fetch 但仍然遇到相同的錯誤。 我該如何解決這個錯誤?
編輯:我認為問題與 webpack 開發服務器在端口 8080 上運行而我的快速服務器在 8081 上運行這一事實有關。當我檢查網絡選項卡的請求時,顯示的是:
編輯:我能夠通過運行 webpack 開發服務器然后打開另一個終端並運行 npm start 來啟動我的快速服務器來解決問題。 這是它應該如何正常工作的方式嗎? 因為我遵循的教程僅適用於 webpack 開發服務器
發生此錯誤是因為快速服務器未運行。 運行npm start
啟動快遞服務器
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