Question

我编写了一个 REST 应用程序，它在本地机器上运行良好，但在服务器上无法运行。应用服务器似乎可以工作，但是当我尝试连接到默认页面或任何其他页面时，我得到了server error file or directory not found

www 启动文件似乎工作正常，但未定义列表功能端口（文件结尾 www 吹）。 www 启动文件的代码是使用 npx express-generator 自动生成的。您可以在此处查看 www 的代码：


#!/usr/bin / env node

/**
* Module dependencies.
*/

var app = require('../app');
var debug = require('debug')('suu965:server');
var http = require('http');

/**
* Get port from environment and store in Express.
     */

var port = normalizePort(process.env.PORT || '3000');
app.set('port', port);

/**
  * Create HTTP server.
 */

var server = http.createServer(app);

/**
* Listen on provided port, on all network interfaces.
 */

server.listen(port);
server.on('error', onError);
server.on('listening', onListening);

/**
* Normalize a port into a number, string, or false.
  */

function normalizePort(val) {
    var port = parseInt(val, 10);

    if (isNaN(port)) {
        // named pipe
        return val;
    }

    if (port >= 0) {
        // port number
        return port;
    }

    return false;
}

/**
  * Event listener for HTTP server "error" event.
 */

function onError(error) {
    if (error.syscall !== 'listen') {
        throw error;
    }

    var bind = typeof port === 'string'
        ? 'Pipe ' + port
        : 'Port ' + port;

    // handle specific listen errors with friendly messages
    switch (error.code) {
        case 'EACCES':
            console.error(bind + ' requires elevated privileges');
            process.exit(1);
            break;
        case 'EADDRINUSE':
            console.error(bind + ' is already in use');
            process.exit(1);
            break;
        default:
            throw error;
    }
}

/**
* Event listener for HTTP server "listening" event.
     */

function onListening() {
    var addr = server.address();
    var bind = typeof addr === 'string'
        ? 'pipe ' + addr
        : 'port ' + addr.port;
    debug('Listening on ' + bind);
}

addr.port 似乎未定义。我看不到抛出错误函数。

Answer 1

const app = require("./app");
const debug = require("debug")("node-angular");
const http = require("http");

const normalizePort = val => {
  var port = parseInt(val, 10);

  if (isNaN(port)) {
    // named pipe
    return val;
  }

  if (port >= 0) {
    // port number
    return port;
  }

  return false;
};

const onError = error => {
  if (error.syscall !== "listen") {
    throw error;
  }
  const bind = typeof addr === "string" ? "pipe " + addr : "port " + port;
  switch (error.code) {
    case "EACCES":
      console.error(bind + " requires elevated privileges");
      process.exit(1);
      break;
    case "EADDRINUSE":
      console.error(bind + " is already in use");
      process.exit(1);
      break;
    default:
      throw error;
  }
};

const onListening = () => {
  const addr = server.address();
  const bind = typeof addr === "string" ? "pipe " + addr : "port " + port;
  debug("Listening on " + bind);
};

const port = normalizePort(process.env.PORT || "3000");
app.set("port", port);

const server = http.createServer(app);
server.on("error", onError);
server.on("listening", onListening);
server.listen(port);

无法连接到节点服务器

1 个答案: