在Google App Engine上部署create-react-app

Question

我正在尝试在Google App Engine上部署使用create-react-app创建的应用程序。

我的应用程序在本地（npm start和npm run build &serve-sbuild）都可以正常运行。但是，在Google App
Engine上部署的应用程序仅显示index.html，并且不会调用我的react代码。

Chrome开发者控制台显示Uncaught SyntaxError: Unexpected token <。

另外，我在console.cloud.google.com上发现，已部署的应用程序不包含构建文件夹。这样对吗？

任何人都可以解决这个问题？

这是我的package.json：

{
  "name": "XXXXX",
  "version": "0.1.0",
  "private": true,
  "dependencies": {
    "react": "^16.8.2",
    "react-dom": "^16.8.2",
    "react-ga": "^2.5.7",
    "react-router-dom": "^4.3.1",
    "react-scripts": "2.1.5"
  },
  "scripts": {
    "start": "react-scripts start",
    "build": "react-scripts build",
    "test": "react-scripts test",
    "eject": "react-scripts eject"
 },
  "eslintConfig": {
    "extends": "react-app"
  },
  "browserslist": [
    ">0.2%",
    "not dead",
    "not ie <= 11",
    "not op_mini all"
  ]
}

另外，这是我的app.yaml。

runtime: nodejs10

handlers:
- url: /.*
  static_files: build/index.html
  upload: build/index.html
- url: /
  static_dir: build

Answer 1

经过多次搜索，我发现我的应用程序的路由系统是原因。

如本文所述，我们在编写app.yaml时需要格外小心。如果我们首先编写以下项目，则GAE将返回build/index.html所有查询，包括对/static/js和的访问/static/css。

- url: /
  static_files: build/index.html
  upload: build/index.html

create-react-app为创建一个构建文件夹和静态子文件夹npm run build。因此，我必须像这样更具体地编写我的app.yaml：

handlers:
  - url: /static/js/(.*)
    static_files: build/static/js/\1
    upload: build/static/js/(.*)
  - url: /static/css/(.*)
    static_files: build/static/css/\1
    upload: build/static/css/(.*)
  - url: /static/media/(.*)
    static_files: build/static/media/\1
    upload: build/static/media/(.*)
  - url: /(.*\.(json|ico))$
    static_files: build/\1
    upload: build/.*\.(json|ico)$
  - url: /
    static_files: build/index.html
    upload: build/index.html
  - url: /.*
    static_files: build/index.html
    upload: build/index.html