由于CORS问题导致firebase主机阻塞脚本

Question

{
  "hosting": {
    "public": "public",
    "ignore": [
      "firebase.json",
      "**/.*",
      "**/node_modules/**"
    ],
    "headers": [ {
    "source" : "**",
    "headers" : [ {
      "key" : "Access-Control-Allow-Origin",
      "value" : "*"
    } ]
  }]
}
}

        Access to XMLHttpRequest at 'https://oracle-bot-sdk.firebaseapp.com//loader.json' 
    from origin 'https://insurance-bot.moblize.it' has been blocked by CORS policy: 
No 'Access-Control-Allow-Origin' header is present on the requested resource.

Answer 1

除了针对cors的firebase.json更改之外，您的firebase函数http/https函数还需要包含cors插件。

例

const cors = require('cors')({origin: true});
const functions = require('firebase-functions');

const app = functions.https.onRequest((req, res) => {
    cors(req, res, () => {
        // Your app stuff here

        // Send Response
        res.status(200).send(<response data>);
    });
});

Express应用程序示例

import express from "express";
const cors = require('cors')({origin: true});

const app = express();
app.get('**', (req, res) => {
  cors(req, res, () => {
      // Your App Here

      // Send response
      res.status(200).send(<response data>);
    });
});