Firestore数据未通过功能显示在客户端中

Question

嗨，我在实时外部网址上使用Firebase托管应用时遇到问题。这是一个简单的聊天应用程序。它具有express，firebase函数，并且前端具有纯html和jquery。我无法获取数据以传输到我的应用程序或从中保存数据。在邮递员中，它工作正常。这是我的服务器：

// The Cloud Functions for Firebase SDK to create Cloud Functions and setup triggers.
const functions = require('firebase-functions');
var express = require('express')
const cors = require("cors");//({origin: true});
var bodyParser = require('body-parser')
var app = express()
var http = require('http').Server(app)
var io = require('socket.io')(http)
const firebase = require('firebase');
const admin = require('firebase-admin');

const firebaseConfig = {
    apiKey: "ZY",
    authDomain: "",
    databaseURL: "",
    projectId: "",
    storageBucket: "t.com",
    messagingSenderId: "",
    appId: ""
  };

// Initialize Firebase
firebase.initializeApp(firebaseConfig);            

admin.initializeApp({
    credential: admin.credential.applicationDefault()
});

var db = admin.firestore();


// // Create and Deploy Your First Cloud Functions
// // https://firebase.google.com/docs/functions/write-firebase-functions
//app.use(cors({origin: 'https://.firebaseapp.com'}));
//app.use(cors({origin: 'null'}));
app.use(require('cors')({origin: true}));
app.use(express.static(__dirname))
app.use(bodyParser.json())
app.use(bodyParser.urlencoded({ extended: false }))

//mongoose.Promise = Promise

//var dbUrl = 'ue&w=majority'

//var Message = mongoose.model('Message', {
//    name: String,
//    message: String
//})




//
app.get('/messages', (req, res) => {
db.collection('users').get()
  .then((snapshot) => {
      debugger
    snapshot.forEach((doc) => {
      console.log(doc.id, '=>', doc.data());
      //res.send(doc.id, '=>', doc.data())
      //res.send(doc.data().name)
      res.send(doc.data())

    });
  })
  .catch((err) => {
    console.log('Error getting documents', err);
  });
})
exports.helloWorld = functions.https.onRequest((request, response) => {
    response.send("Hello from Firebase!");
  });
exports.getMessages = functions.https.onRequest((req, res) => {
    // Forbidding PUT requests.
    if (req.method === 'PUT') {
      return res.status(403).send('Forbidden!');
    }
    // [END sendError]
    return cors(req, res, () => { 

            db.collection('users').get()
            .then((snapshot) => {
              snapshot.forEach((doc) => {
                console.log(doc.id, '=>', doc.data());
                //res.send(doc.id, '=>', doc.data())
                //res.send(doc.data().name)
                res.send(doc.data())

              });
            })
            .catch((err) => {
              console.log('Error getting documents', err);
            })
    })
})
exports.addMessage = functions.https.onRequest((req, res) => {
    try {

        console.log('am bout to save this msg')
        //save to firestore
        //create new or overwrite docs
        //const docRef = db.doc("users/Mu6BW6viq55faeiEXK0g")
        //docRef.set({
        //  name: 'sample'
        //});

        //always add new documents
        db.collection('users').add({
           name: req.body
        }).then(ref => {
           console.log('Added document with ID: ', ref.id);
        });
        console.log('saved')
        io.emit('message', req.body)
        res.sendStatus(200);
       } catch (err) {
          res.sendStatus(500)
          return console.error(err)
       } finally {
          //logger
          console.log('message posted method called')
       }


})

exports.addMessageTwo = functions.https.onRequest(async (req, res) => {
    // [END addMessageTrigger]
      // Grab the text parameter.
      const formData = req.body;
      // [START adminSdkAdd]
      // Push the new message into Cloud Firestore using the Firebase Admin SDK.
      const writeResult = await admin.firestore().collection('users').add({name: formData});
      // Send back a message that we've succesfully written the message
      res.json({result: `Message with ID: ${writeResult.id} added.`});
      // [END adminSdkAdd]
});

io.on('connection', (socket) => {
    console.log('a user connected')
})

//mongoose.connect(dbUrl, (err) => {
//    console.log('mongo db connection', err)
//})

//var server = http.listen(3000, () => {
//    console.log('server is listening on port', server.address().port)
//})

exports.api = functions.https.onRequest(app);

我的客户：

    <!doctype html>
    <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-beta/css/bootstrap.min.css" integrity="sha384-/Y6pD6FV/Vv2HJnA6t+vslU6fwYXjCFtcEpHbNJ0lyAFsXTsjBbfaDjzALeQsN6M" crossorigin="anonymous">
    <script src="https://code.jquery.com/jquery-3.2.1.min.js" crossorigin="anonymous"></script>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.11.0/umd/popper.min.js" integrity="sha384-b/U6ypiBEHpOf/4+1nzFpr53nxSS+GLCkfwBdFNTxtclqqenISfwAzpKaMNFNmj4" crossorigin="anonymous"></script>
    <script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-beta/js/bootstrap.min.js" integrity="sha384-h0AbiXch4ZDo7tp9hKZ4TsHbi047NrKGLO3SEJAg45jXxnGIfYzk4Si90RDIqNm1" crossorigin="anonymous"></script>
    <script src="https://cdn.jsdelivr.net/npm/socket.io-client@2/dist/socket.io.js"></script>
     <!-- Firebase App (the core Firebase SDK) is always required and must be listed first -->
     <script src="https://www.gstatic.com/firebasejs/7.3.0/firebase-app.js"></script>


 <!-- Add Firebase products that you want to use -->
 <script src="https://www.gstatic.com/firebasejs/7.3.0/firebase-auth.js"></script>
 <script src="https://www.gstatic.com/firebasejs/7.1.0/firebase-firestore.js"></script>


<div class="container">
    <br>
    <div class="jumbotron">
        <h1 class="display-4">Send Message</h1>
        <br>
        <input id="name" class="form-control" placeholder="Name">
        <br>
        <textarea id="message" class="form-control" placeholder="Message"></textarea>
        <br>
        <button id="send" class="btn btn-success">Send</button>
    </div>
    <div id="messages">

    </div>
    <button id="do-query">Search</button>
</div>
<script>
    $(document).ready(function() {
        getMessages()
    });

    var socket = io()
    $(() => {
        $("#send").click(()=>{
            console.log('about to send msg to postMessage()')
            var message = { name: $("#name").val(), message: $("#message").val()};
            console.log(message);
            postMessage(message);
        })
        getMessages();
    })


    socket.on('message', addMessage)

    function addMessage(message){
        console.log(message)
        $("#messages").append(`<h4> ${message.name.message} </h4> <p> ${message.name.name} </p>`)
    }

    $.ajaxSetup({
        headers:{
            'Content-Type' : "application/json",
            'Access-Control-Allow-Origin:': "*"
        }
    });

    function getMessages() {
        $.get('https://us-central1-.cloudfunctions.net/getMessages', (data) => {
            //data.forEach(addMessage(data));
            console.log(data);
            addMessage(data);
        })
    }

    function postMessage(message) {
        console.log('i made it into postMessage()')
        $.post('https://us-central1-.cloudfunctions.net/addMessageTwo', message)
    }
</script>

我可以通过所有导出功能通过Postman获取和发布数据。但是我前端的应用程序既不获取也不发布数据！我想念什么？我已经浏览了所有视频和教程！

只需使用简单的端点（例如$ .get（'/ getMessages'））在localhost上正常工作就可以了。

这个奇怪的应用程序根本没有调用端点。没有Cors，没有问题。如上所述，在本地工作正常，但仅在已部署的客户端中调用==> Firebase Functions。 Firebase功能日志显示无呼叫。

可以帮忙吗？

谢谢