将angular项目部署到heroku

我正在尝试将有角项目部署到heroku。我完成所有步骤并得到错误：无法加载资源：服务器以状态503（服务不可用）favicon.ico：1响应。是代码中的问题，还是我在heroku网站上设置错误。

{
  "name": "flashcards","version": "0.0.0","scripts": {
    "ng": "ng","start": "ng start","build": "ng build","test": "ng test","lint": "ng lint","e2e": "ng e2e","preinstall": "npm install -g @angular/cli","postinstall": "ng build --aot --prod"
  },"private": true,"dependencies": {
    "@angular/animations": "^8.2.13","@angular/cdk": "^8.2.3","@angular/cli": "^8.3.17","@angular/common": "~8.2.5","@angular/compiler": "~8.2.5","@angular/compiler-cli": "^8.2.13","@angular/core": "~8.2.5","@angular/forms": "~8.2.5","@angular/material": "^8.2.3","@angular/platform-browser": "~8.2.5","@angular/platform-browser-dynamic": "~8.2.5","@angular/router": "~8.2.5","@types/crypto-js": "^3.1.43","crypto-js": "^3.1.9-1","express": "^4.17.1","hammerjs": "^2.0.8","jwt-token-encrypt": "^1.0.4","material-design-icons": "^3.0.1","path": "^0.12.7","rxjs": "~6.4.0","tslib": "^1.10.0","typescript": "~3.5.3","zone.js": "~0.9.1"
  },"devDependencies": {
    "@angular-devkit/build-angular": "~0.803.4","@angular/language-service": "~8.2.5","@types/jasmine": "~3.3.8","@types/jasminewd2": "~2.0.3","@types/node": "~8.9.4","codelyzer": "^5.0.0","enhanced-resolve": "^3.3.0","jasmine-core": "~3.4.0","jasmine-spec-reporter": "~4.2.1","karma": "~4.1.0","karma-chrome-launcher": "~2.2.0","karma-coverage-istanbul-reporter": "~2.0.1","karma-jasmine": "~2.0.1","karma-jasmine-html-reporter": "^1.4.0","protractor": "~5.4.0","ts-node": "~7.0.0","tslint": "~5.15.0","typescript": "~3.5.3"
  },"engines": {
    "node": "10.16.0","npm": "6.9.0"
  }
}

{
  "$schema": "./node_modules/@angular/cli/lib/config/schema.json","version": 1,"newProjectRoot": "projects","projects": {
    "flashcards": {
      "projectType": "application","schematics": {},"root": "","sourceRoot": "src","prefix": "app","architect": {
        "build": {
          "builder": "@angular-devkit/build-angular:browser","options": {
            "outputPath": "dist/flashcards","index": "src/index.html","main": "src/main.ts","polyfills": "src/polyfills.ts","tsConfig": "tsconfig.app.json","aot": false,"assets": [
              "src/favicon.ico","src/assets"
            ],"styles": [
              "src/styles.css"
            ],"scripts": []
          },"configurations": {
            "production": {
              "fileReplacements": [
                {
                  "replace": "src/environments/environment.ts","with": "src/environments/environment.prod.ts"
                }
              ],"optimization": true,"outputhashing": "all","sourceMap": false,"extractCss": true,"namedChunks": false,"aot": true,"extractLicenses": true,"vendorChunk": false,"buildOptimizer": true,"budgets": [
                {
                  "type": "initial","maximumWarning": "2mb","maximumError": "5mb"
                },{
                  "type": "anyComponentStyle","maximumWarning": "6kb","maximumError": "10kb"
                }
              ]
            }
          }
        },"serve": {
          "builder": "@angular-devkit/build-angular:dev-server","options": {
            "browserTarget": "flashcards:build"
          },"configurations": {
            "production": {
              "browserTarget": "flashcards:build:production"
            }
          }
        },"extract-i18n": {
          "builder": "@angular-devkit/build-angular:extract-i18n","options": {
            "browserTarget": "flashcards:build"
          }
        },"test": {
          "builder": "@angular-devkit/build-angular:karma","options": {
            "main": "src/test.ts","tsConfig": "tsconfig.spec.json","karmaConfig": "karma.conf.js","scripts": []
          }
        },"lint": {
          "builder": "@angular-devkit/build-angular:tslint","options": {
            "tsConfig": [
              "tsconfig.app.json","tsconfig.spec.json","e2e/tsconfig.json"
            ],"exclude": [
              "**/node_modules/**"
            ]
          }
        },"e2e": {
          "builder": "@angular-devkit/build-angular:protractor","options": {
            "protractorConfig": "e2e/protractor.conf.js","devserverTarget": "flashcards:serve"
          },"configurations": {
            "production": {
              "devserverTarget": "flashcards:serve:production"
            }
          }
        }
      }
    }},"defaultProject": "flashcards"
}

Heroku需要一个Express服务器才能在生产模式下运行Angular应用程序。在Angular应用程序的根文件夹中打开一个命令窗口。执行以下命令以安装Express服务器。

npm install express --save

在项目文件夹中创建server.js文件：-

const express = require('express');
const app = express();
const path = require('path');
const port = process.env.PORT || 4200;
const server = require('http').Server(app);


// Serve only the static files form the angularapp directory
app.use(express.static(__dirname + '/your-application-name'));
 
app.get('/*',function(req,res) {
 
res.sendFile(path.join(__dirname+'/your-application-name/index.html'));
});
 
// Start the app by listening on the default Heroku port


server.listen(port,function () {
    console.log("App running on port " + port);
})

更新package.json文件中的脚本。

"start": "node server.js","postinstall": "ng build --output-path your-application-name --aot --prod",

确保.gitignore文件中未提及dist文件。

将angular项目部署到heroku

tskpzx 回答：将angular项目部署到heroku

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