NodeJS api没有返回任何响应答案

【问题标题】：NodeJS api not returning any responseNodeJS api没有返回任何响应
【发布时间】：2021-04-17 02:37:28
【问题描述】：

我用这个https://medium.com/weekly-webtips/create-and-deploy-your-first-react-web-app-with-a-node-js-backend-ec622e0328d7 创建了 React 前端和 NodeJS 后端。在本地运行时，它可以工作，但我将它部署在 Heroku 上。我没有收到来自 express server api 的任何响应。

app.get("/test/", (request, response) => {
    response.send({"name":"Hello Test!!!"});
});

我的代理设置如下所示

结果为 http://localhost:3000/

来自前端的您好！你好测试！！！

结果为@987654322@ 来自前端的您好！

“代理”：“http://localhost:5000”，

server.js

// Import dependencies
const express = require('express');
const bodyParser = require('body-parser');
const cors = require('cors');
const path = require('path');

// Create a new express application named 'app'
const app = express();

// Set our backend port to be either an environment variable or port 5000
const port = process.env.PORT || 5000;

// This application level middleware prints incoming requests to the servers console, useful to see incoming requests
app.use((req, res, next) => {
    console.log(`Request_Endpoint: ${req.method} ${req.url}`);
    next();
});

// Configure the bodyParser middleware
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({
    extended: true
}));

// Configure the CORs middleware
app.use(cors());

// This middleware informs the express application to serve our compiled React files
if (process.env.NODE_ENV === 'production' || process.env.NODE_ENV === 'staging') {
    app.use(express.static(path.join(__dirname, 'client/build')));

    app.get('*', function (req, res) {
        res.sendFile(path.join(__dirname, 'client/build', 'index.html'));
    });
};

// // Catch any bad requests
// app.get('*', (req, res) => {
//     res.status(200).json({
//         msg: 'Catch All'
//     });
// });

app.get("/test/", (request, response) => {
    response.send({"name":"Hello Test!!!"});
});

// Configure our server to listen on the port defiend by our port variable
app.listen(port, () => console.log(`BACK_END_SERVICE_PORT: ${port}`));

任何帮助都会很棒

【问题讨论】：

你可以添加整个 API 文件或者你正在初始化服务器的地方，并确保你已经像这样初始化了服务器端口，让 PORT = process.env.PORT || 5000;
@akshay 添加了 server.js 文件

标签： node.js reactjs heroku deployment

【解决方案1】：

// MOVE THIS BEOFRE get("*") 
// Because * will handle all incoming requests

app.get("/test/", (request, response) => {
    response.send({"name":"Hello Test!!!"});
}); 

// This middleware informs the express application to serve our compiled React files
if (process.env.NODE_ENV === 'production' || process.env.NODE_ENV === 'staging') {
    app.use(express.static(path.join(__dirname, 'client/build')));

    app.get('*', function (req, res) {
        res.sendFile(path.join(__dirname, 'client/build', 'index.html'));
    });
};

【讨论】：