我已成功将 Angular2 应用程序部署到 Heroku，但不幸的是，我收到了“应用程序中发生错误，无法提供您的页面”页面。
当我使用 npm start 在本地运行应用程序时，它运行良好。
我认为这可能与依赖项或具有不同配置的heroku实例有关。我尝试过修改启动命令但没有成功。
该项目是基于 Angular 快速入门指南构建的 here
我的 package.json 文件
{
"name": "danoram-angular-quickstart",
"version": "1.0.0",
"scripts": {
"start": "npm run lite",
"lite": "lite-server"
},
"license": "MIT",
"dependencies": {
"@angular/common": "~2.3.0",
"@angular/compiler": "~2.3.0",
"@angular/core": "~2.3.0",
"@angular/forms": "~2.3.0",
"@angular/http": "~2.3.0",
"@angular/platform-browser": "~2.3.0",
"@angular/platform-browser-dynamic": "~2.3.0",
"@angular/router": "~3.3.0",
"@angular/upgrade": "~2.3.0",
"angular-in-memory-web-api": "~0.1.16",
"core-js": "^2.4.1",
"reflect-metadata": "^0.1.8",
"rxjs": "5.0.0-rc.4",
"zone.js": "^0.7.2"
},
"devDependencies": {
"concurrently": "^3.0.0",
"lite-server": "^2.2.2",
"webpack": "^1.14.0"
}
}
heroku 日志
2016-12-20T05:55:10.169815+00:00 app[web.1]: npm ERR! Failed at the <a href="https://stackoverflow.com/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="395d5857564b58541458575e4c55584b14484c505a524a4d584b4d790817091709" rel="noreferrer noopener nofollow">[email protected]</a> lite script 'lite-server'.
2016-12-20T05:55:10.170077+00:00 app[web.1]: npm ERR! Make sure you have the latest version of node.js and npm installed.
2016-12-20T05:55:10.170162+00:00 app[web.1]: npm ERR! If you do, this is most likely a problem with the danoram-angular-quickstart package,
2016-12-20T05:55:10.170243+00:00 app[web.1]: npm ERR! not with npm itself.
2016-12-20T05:55:10.170321+00:00 app[web.1]: npm ERR! Tell the author that this fails on your system:
2016-12-20T05:55:10.170401+00:00 app[web.1]: npm ERR! lite-server
2016-12-20T05:55:10.170464+00:00 app[web.1]: npm ERR! You can get information on how to open an issue for this project with:
2016-12-20T05:55:10.170538+00:00 app[web.1]: npm ERR! npm bugs danoram-angular-quickstart
2016-12-20T05:55:10.170618+00:00 app[web.1]: npm ERR! Or if that isn't available, you can get their info via:
2016-12-20T05:55:10.170696+00:00 app[web.1]: npm ERR! npm owner ls danoram-angular-quickstart
2016-12-20T05:55:10.170790+00:00 app[web.1]: npm ERR! There is likely additional logging output above.
2016-12-20T05:55:10.173933+00:00 app[web.1]:
2016-12-20T05:55:10.174095+00:00 app[web.1]: npm ERR! Please include the following file with any support request:
2016-12-20T05:55:10.174171+00:00 app[web.1]: npm ERR! /app/npm-debug.log
2016-12-20T05:55:10.183775+00:00 app[web.1]:
2016-12-20T05:55:10.191217+00:00 app[web.1]: npm ERR! Linux 3.13.0-105-generic
2016-12-20T05:55:10.191388+00:00 app[web.1]: npm ERR! argv "/app/.heroku/node/bin/node" "/app/.heroku/node/bin/npm" "start"
2016-12-20T05:55:10.191531+00:00 app[web.1]: npm ERR! node v6.9.1
2016-12-20T05:55:10.191647+00:00 app[web.1]: npm ERR! npm v3.10.8
2016-12-20T05:55:10.191761+00:00 app[web.1]: npm ERR! code ELIFECYCLE
2016-12-20T05:55:10.191855+00:00 app[web.1]: npm ERR! <a href="https://stackoverflow.com/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="1e7a7f70716c7f73337f70796b727f6c336f6b777d756d6a7f6c6a5e2f302e302e" rel="noreferrer noopener nofollow">[email protected]</a> start: `npm run lite`
2016-12-20T05:55:10.191943+00:00 app[web.1]: npm ERR! Exit status 1
我也把项目代码放在github上供引用here
感谢所有帮助!
最佳答案
如果没有后端，您无法将应用程序部署到heroku。在我看来，带有 angular2 应用程序的后端的最佳选择是 nodejs/express 框架。
Heroku 将查看您的 package.json 的启动脚本，该脚本应该类似于:
"scripts": {
"start": "node app.js"
}
我的建议是将您的项目包装在一个文件夹中(比如说 client 文件夹)，然后在新的根目录中创建另一个 package.json 和一个 < strong>app.js 文件
package.json:
{
"name": "basictemplate",
"version": "1.0.0",
"description": "",
"main": "web.js",
"scripts": {
"start": "node app.js",
"test": "echo \"Error: no test specified\" && exit 1",
"heroku-prebuild": "echo This runs before Heroku installs your dependencies.",
"heroku-postbuild": "npm install --prefix ./client"
},
"author": "",
"license": "ISC",
"dependencies": {
"body-parser": "^1.13.3",
"express": "^4.13.3"
},
"engines": {
"node": "4.1.1"
}
}
app.js:
var express = require('express');
var app = express();
var server = require('http').Server(app);
var bodyParser = require('body-parser');
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({extended: true}) );
app.use( express.static(__dirname + '/client' ) );
var listener = server.listen(process.env.PORT || 5000, function(){
console.log('Listening on port ' + listener.address().port); //Listening on port 5000
});
关于javascript - 在heroku上运行 Angular 应用程序时出现应用程序错误，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/41236480/