服务器在mermeroku部署中不能正常工作

Question

我有一个半成功的部署到heroku，但是对服务器的调用说CONNECTION REFUSED，我不能弄清楚。

我可以点击路由，它在邮差中正确返回，但在生产中不是

下面是services文件(前面带有/api的是被调用的)

`import http from "../utils/http-common";
class CountriesService {
getAll() {
return http.get("/api/country");
}
getAllCountries() {
return http.get("/country/getAll");
}
getScroll(skip) {
return http.get(`/country?skip=${skip}`);
}
get(id) {
return http.get(`/country/${id}`);
}
create(countryForm) {
return http.post("/country/new", countryForm);
}
edit(id, values) {
return http.put(`/country/${id}`, values);
}
delete(id) {
return http.delete(`/country/${id}`);
}

}
export const getPostsPage = async (pageParam = 1, options = {}) => {
const response = await http.get(`/api/country?_page=${pageParam}`, options)
return response.data
}
export default new CountriesService();
`

这是http-common

import axios from "axios";
var url;
process.env.REACT_APP_NODE_ENV === "production"
? (url = "")
: (url = "http://localhost:5000/");
export default axios.create({
baseURL: `${url}`,
headers: {
'Content-Type': 'application/json',
},
withCredentials: true,
});

这是后端服务器文件，具有从前端到localhost 5000的代理

const path = require('path');
require("dotenv").config();
const express = require("express");
const app = express();
const mongoose = require("mongoose");
const cors = require("cors");
var morgan = require("morgan");
const MongoDBStore = require('connect-mongo');
const mongoSanitize = require('express-mongo-sanitize');
const helmet = require('helmet');
// Models
const User = require("./models/user.js");
// Passport Config
const passport = require('passport');
const LocalStrategy = require('passport-local').Strategy;
const flash = require("connect-flash");
const session = require("express-session");
const cookieParser = require("cookie-parser");


// const { MongoClient } = require("mongodb");
const BodyParser = require("body-parser");
const { storage } = require("./imageupload/cloudinary");
const userAuthRoute = require("./routes/user.js");
const reviewRoute = require("./routes/review.js");
const countryRoute = require("./routes/country.js");
const cityRoute = require("./routes/city.js");
const activityRoute = require("./routes/activity.js");
const restaurantRoute = require("./routes/restaurant.js");
const dishesRoute = require('./routes/dishes.js');
const outdoorsRoute = require('./routes/outdoors.js');
const apiRoutes = require("./routes/api.js");
const cityReviewRoute = require("./routes/cityReviews.js");
const foodRoute = require('./routes/food.js');
const landmarkRoute = require('./routes/landmark.js');
const searchRoute = require('./routes/search.js');
const contactRoute = require('./routes/contact.js');


const db_url = process.env.DB_URL;
const PORT = process.env.PORT || 5000;
const secret = process.env.SESSION_SECRET;

// const client = new MongoClient(process.env.DB_URL);
const corsOptions = {
origin: [
"http://localhost:3000",
"http://localhost:5000",
"https://geopilot.herokuapp.com",],
credentials: true,
optionSuccessStatus:200,
};
app.use(cors(corsOptions));
app.use(express.json());
app.use(mongoSanitize({ replaceWith: "_" }));
app.use(BodyParser.json());
app.use(express.urlencoded({ extended: true }));

app.use(morgan("tiny"));
// app.use(cookieParser());
mongoose
.connect(db_url)
.then(() => {
console.log("database connection established successfully");
})
.catch((error) => console.log("this is the error", error));

const store = MongoDBStore.create({
mongoUrl: process.env.DB_URL,
ttl: 24 * 60 * 60 * 365, // 1 year
autoRemove: 'native',
crypto: {
secret,
},
});  

store.on('error', function(error) {
console.log('SESSION STORE ERROR:', error);
});
// Session Settings
const sessionOptions = {
name: "geopilot_session",
secret: secret,
store: store,
resave: false,
saveUninitialized: false,
cookie: {
samesite: false,
// httpOnly: true,
// secure: true,
expires: Date.now() + 1000 * 60 * 60 * 24 * 365,
maxAge: 1000 * 60 * 60 * 24 * 365,
},
};

// app.set('trust proxy', 1) // trust first proxy
// Session Setup
app.use(session(sessionOptions));
// Helmet Setup
// app.use(helmet())

// Passport Middleware
app.use(passport.initialize());
app.use(passport.session());
passport.use(new LocalStrategy(User.authenticate()));
passport.serializeUser(User.serializeUser());
passport.deserializeUser(User.deserializeUser());

// Routes
app.use("/api/country/:countryId/reviews", reviewRoute);
app.use("/api/country", countryRoute);
app.use('/api/city', cityRoute);
app.use('/api/city/:cityId/reviews', cityReviewRoute);
app.use('/api/activity', activityRoute);
app.use('/api/restaurant', restaurantRoute);
app.use('/api/restaurant/:restaurantId/reviews', reviewRoute);
app.use('/api/landmark', landmarkRoute);
app.use('/api/landmark/:landmarkId/reviews', reviewRoute);
app.use('/api/food', foodRoute);
app.use('/api/dishes', dishesRoute);
app.use('/api/outdoor', outdoorsRoute);
app.use('/api/search', searchRoute);
app.use('/api/user', userAuthRoute);
app.use('/api/contact', contactRoute);
// ----------- Deployment -----------
__dirname = path.resolve();
if (process.env.NODE_ENV === "production") {
app.use(express.static(path.join(__dirname, "../client/build")));
app.get("*", (req, res) => {
res.sendFile(path.resolve(__dirname, "../client", "build", "index.html"));
});
}
// ----------- Deployment -----------

app.get("*", () => {
res.send("PAGE NOT FOUND");
});

我试着在邮差中请求。

我试着改变包里的东西。Json来帮助代理或运行服务器

我尝试切换端点并更改CORS策略，但它不起作用。

Answer 1

对于任何看到这个并且卡住的人，我更改了http-common baseUrl以匹配我的网站url(不是localhost)，然后不得不做"npm run build"使其实际实现更改。