使用Flask服务通过create-react-app创建的前端

小胖Gil · 04月07日

我有一个带有API路由的Flask后端,可通过使用create-react-app创建的React单页应用程序访问。当使用create-react-app开发服务器时,我的Flask后端可以工作。

我想npm run build从我的Flask服务器提供内置的(使用)静态React应用程序。构建React应用会导致以下目录结构:

- build
  - static
    - css
        - style.[crypto].css
        - style.[crypto].css.map
    - js
        - main.[crypto].js
        - main.[crypto].js.map
  - index.html
  - service-worker.js
  - [more meta files]

通过[crypto],我的意思是在构建时所产生的随机生成的字符串。

收到index.html文件后,浏览器将发出以下请求:

- GET /static/css/main.[crypto].css
- GET /static/css/main.[crypto].css
- GET /service-worker.js

How should I serve these files? I came up with this:

from flask import Blueprint, send_from_directory

static = Blueprint('static', __name__)

@static.route('/')
def serve_static_index():
    return send_from_directory('../client/build/', 'index.html')

@static.route('/static/<path:path>') # serve whatever the client requested in the static folder
def serve_static(path):
    return send_from_directory('../client/build/static/', path)

@static.route('/service-worker.js')
def serve_worker():
    return send_from_directory('../client/build/', 'service-worker.js')

This way, the static assets are successfully served.

On the other hand, I could incorporate this with the built-in Flask static utilities. But I do not understand how to configure this.

Is my solution robust enough? Is there a way to use built-in Flask features to serve these assets? Is there a better way to use create-react-app?

回答(1)
时间
L
LGil
1 · 2020-04-07 11:13:45

接受的答案对我不起作用。我用过了

import os

from flask import Flask, send_from_directory, jsonify, render_template, request

from server.landing import landing as landing_bp
from server.api import api as api_bp

app = Flask(__name__, static_folder="../client/build")
app.register_blueprint(landing_bp, url_prefix="/landing")
app.register_blueprint(api_bp, url_prefix="/api/v1")


@app.route("/")
def serve():
    """serves React App"""
    return send_from_directory(app.static_folder, "index.html")


@app.route("/<path:path>")
def static_proxy(path):
    """static folder serve"""
    file_name = path.split("/")[-1]
    dir_name = os.path.join(app.static_folder, "/".join(path.split("/")[:-1]))
    return send_from_directory(dir_name, file_name)


@app.errorhandler(404)
def handle_404(e):
    if request.path.startswith("/api/"):
        return jsonify(message="Resource not found"), 404
    return send_from_directory(app.static_folder, "index.html")


@app.errorhandler(405)
def handle_405(e):
    if request.path.startswith("/api/"):
        return jsonify(message="Mehtod not allowed"), 405
    return e


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