npm start启动后访问localhost显示"message":"Not Found"、404

Question

我git了一位老师的项目，将git项目克隆到本地仓库后，我下载了相关依赖，npm start也启动成功了，但之后访问了localhost:3000，页面显示{"message":"Not Found","error":{"status":404}}。求各位大佬们帮助，指点迷津，怎么才能正常访问！

以下依次是出错截图、项目结构截图、package.json中的代码、bin/www的代码：

出错截图

项目结构

package.json中的代码：

{
  "name": "letao",
  "version": "0.0.0",
  "private": true,
  "scripts": {
    "start": "node ./bin/www"
  },
  "dependencies": {
    "body-parser": "^1.18.3",
    "cookie-parser": "~1.4.3",
    "debug": "~2.2.0",
    "express": "^4.16.3",
    "express-session": "^1.15.6",
    "formidable": "*",
    "hbs": "~4.0.0",
    "moment": "^2.22.2",
    "morgan": "^1.9.0",
    "mysql": "^2.15.0",
    "node-uuid": "*",
    "serve-favicon": "^2.5.0"
  }
}

bin/www的代码：

#!/usr/bin/env node

/**
 * Module dependencies.
 */

var app = require('../app');
var debug = require('debug')('letao: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);
}

Answer 1

npm run start之后在浏览器访问以下地址都可以

http://localhost:3000/admin
http://localhost:3000/m
http://localhost:3000/manage
http://localhost:3000/mobile/