我有我的第一个node.js应用程序(本地运行良好)-但我无法通过heroku部署它(第一次w/ heroku也是如此)。代码如下。SO不让我写这么多代码,所以我只想说在我的网络中本地运行代码也没有问题。

 var http = require('http');
 var fs = require('fs');
 var path = require('path');

 http.createServer(function (request, response) {

    console.log('request starting for ');
    console.log(request);

    var filePath = '.' + request.url;
    if (filePath == './')
        filePath = './index.html';

    console.log(filePath);
    var extname = path.extname(filePath);
    var contentType = 'text/html';
    switch (extname) {
        case '.js':
            contentType = 'text/javascript';
            break;
        case '.css':
            contentType = 'text/css';
            break;
    }

    path.exists(filePath, function(exists) {

        if (exists) {
            fs.readFile(filePath, function(error, content) {
                if (error) {
                    response.writeHead(500);
                    response.end();
                }
                else {
                    response.writeHead(200, { 'Content-Type': contentType });
                    response.end(content, 'utf-8');
                }
            });
        }
        else {
            response.writeHead(404);
            response.end();
        }
    });

 }).listen(5000);

 console.log('Server running at http://127.0.0.1:5000/');

知道吗?


当前回答

我使用ReactJs, 如果你想上传到heroku,在你的webpack.config.js中添加这个

因为如果不加就会有错误

错误R10(引导超时)-> Web进程绑定$PORT失败 发射60秒

//webpack.config.js add code like that

const HtmlWebPackPlugin = require("html-webpack-plugin");
const MiniCssExtractPlugin = require("mini-css-extract-plugin");
var server_port = process.env.YOUR_PORT || process.env.PORT || 5000;
var server_host = process.env.YOUR_HOST || "0.0.0.0";

module.exports = {
  module: {
    rules: [
      {
        test: /\.js$/,
        exclude: /node_modules/,
        use: {
          loader: "babel-loader"
        }
      },
      {
        test: /\.css$/,
        use: [MiniCssExtractPlugin.loader, "css-loader"]
      }
    ]
  },
  devServer: {
    disableHostCheck: true,
    contentBase: "./ dist",
    compress: true,
    inline: true,
    port: server_port,
    host: server_host

  },
  plugins: [
    new HtmlWebPackPlugin({
      template: "./src/index.html",
      filename: "index.html"
    }),
    new MiniCssExtractPlugin({
      filename: "[name].css",
      chunkFilename: "[id].css"
    })
  ]
};

其他回答

将监听端口从3000更改为(process.env.)。PORT || 5000)解决。

编辑package.json:

...
"engines": {
"node": "5.0.0",
"npm": "4.6.1"
},
...

和Server.js:

...
var port = process.env.PORT || 3000;
app.listen(port, "0.0.0.0", function() {
console.log("Listening on Port 3000");
});
...

对于那些同时传递端口和主机的程序,请记住Heroku不会绑定到本地主机。

您必须为主机传递0.0.0.0。

即使您使用了正确的端口。我们必须做出这样的调整:

# port (as described above) and host are both wrong
const host = 'localhost';
const port = 3000;

# use alternate localhost and the port Heroku assigns to $PORT
const host = '0.0.0.0';
const port = process.env.PORT || 3000;

然后你可以像往常一样启动服务器:

app.listen(port, host, function() {
  console.log("Server started.......");
});

你可以在这里看到更多细节:https://help.heroku.com/P1AVPANS/why-is-my-node-js-app-crashing-with-an-r10-error

我意识到在请求端点中不需要端口号,因此端点是herokuapp.com,而不是herokuapp.com:5000。

listen()调用可以没有host和callback:

server.listen(5000);

在我的例子中,我使用了来自https://hapijs.com/的例子

来解决我替换的问题

server.connection({ 
    host: 'localhost', 
    port: 8000 
});

server.connection({
    port: process.env.PORT || 3000 
});