MERN无法部署到heroku"/>
MERN无法部署到heroku
我正在尝试通过NodeJS渲染我的React应用并将其部署在Heroku上。但我似乎在浏览器中有此问题
未捕获的SyntaxError：意外的令牌'
该页面为空白白页。
我尝试了很多解决方案，但我似乎不知道出了什么问题，为什么主页不显示。
我的[[
{
"name": "portfolio-app",
"version": "1.0.0",
"description": "a simple app",
"main": "app.js",
"scripts": {
"test": "echo \"Error: no test specified\" && exit 1",
"heroku-postbuild": "cd client && npm install && npm install --only=dev --no-shrinkwrap && npm run build",
"start": "node app.js",
"client": "cd client && npm run start",
"dev": "concurrently -n 'server,client' -c 'red,green' \"nodemon app.js\" \"npm run client\""
},
"dependencies": {
"body-parser": "^1.19.0",
"concurrently": "^5.2.0",
"create-react-app": "^3.4.1",
"express": "^4.17.1",
"mongoose": "^5.9.6",
"nodemon": "^2.0.2"
},
"engines": {
"node": "10.x"
}
}
我的[[在React App中package.json
{
"name": "client",
"version": "0.1.0",
"private": true,
"dependencies": {
"@testing-library/jest-dom": "^4.2.4",
"@testing-library/react": "^9.5.0",
"@testing-library/user-event": "^7.2.1",
"history": "^4.10.1",
"react": "^16.13.1",
"react-dom": "^16.13.1",
"react-scripts": "3.4.1"
},
"scripts": {
"start": "react-scripts start",
"build": "react-scripts build",
"test": "react-scripts test",
"eject": "react-scripts eject"
},
"eslintConfig": {
"extends": "react-app"
},
"browserslist": {
"production": [
">0.2%",
"not dead",
"not op_mini all"
],
"development": [
"last 1 chrome version",
"last 1 firefox version",
"last 1 safari version"
]
},
"proxy": "http://localhost:8080"
}
我服务器文件：app.js
const express = require('express'),
app = express(),
bodyParser = require('body-parser'),
nav = require('./routes/navigation'),
path = require('path'),
PORT = process.env.PORT || 8080;
/* Settings */
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({extended: true}));
app.use(express.static(__dirname + '/public'));
/*Production settings*/
if(process.env.NODE_ENV === "production"){
app.use(express.static(path.join(__dirname, 'client/build')));
app.get('*', (req, res) => {
res.sendFile(path.join(__dirname, 'client/build', 'index.html'));
});
}
/* Starting server */
app.listen(PORT, () => {
console.log(`APP IS RUNNING ON PORT ${PORT}`);
});
回答如下：https://elements.heroku/buildpacks/mars/create-react-app-buildpack问题已解决。
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