html - 如何修复 POST 端点问题以允许 Node.js 和 Express 在实时网站上工作(HostGator Shared)

Question

我正在接触 Node.js，并决定使用 MySQL 作为后端创建一个用户帐户管理系统。在 LocalHost 上它工作正常。然后我尝试在我的实时网站上复制此内容。我安装了 nvm、npm、node 和所有依赖项。现在，在本地主机上我所要做的就是“node login.js”并且一切正常。在实时网站上，情况却有所不同。我似乎无法弄清楚如何让 POST 端点工作。

这个例子......

	<form action="auth" method="POST">

应该允许此 JavaScript 运行

app.post('/auth', function(request, response) {

在 HostGator 终端上，我已经安装了所有依赖项，HostGator 上也可以使用 Apache，但我没有使用它，应该吗？

  "dependencies": {
    "bcrypt-nodejs": "0.0.3",
    "bcryptjs": "^2.4.3",
    "body-parser": "^1.19.0",
    "express": "^4.16.4",
    "express-session": "^1.16.1",
    "express-sessions": "^1.0.6",
    "mysql": "^2.17.1",
    "nan": "^2.14.0"

我使用“node login.js”来启动服务器

这是我的完整代码，其中包含一些凭据 ****

HTML

	<div class="accounts-form">
			<h1>Login Form</h1>
			<form action="auth" method="POST">
				<input type="text" name="username" placeholder="Username" required maxlength="50">
				<input type="password" name="password" placeholder="Password" required maxlength="255">
				<input type="submit">
				<a href="/signup"><h4> Sign Up </h4></a>
			</form>
		</div>

JavaScript

var mysql = require('mysql');
var express = require('express');
var session = require('express-session');
var bodyParser = require('body-parser');
var path = require('path');
var bcrypt = require('bcryptjs');

const saltRounds = 14;

var connection = mysql.createConnection({
 **********
});

var app = express();

app.use(session({
  secret: ****************,
  resave: true,
  saveUninitialized: true
}));
app.use(bodyParser.urlencoded({
  extended: true
}));
app.use(bodyParser.json());

app.get('/', function(request, response) {
  response.sendFile(path.join(__dirname + '/login.html'));
});

app.post('/user', function(request, response) {

  var username = request.body.username;
  var password = request.body.password;
  var password2 = request.body.password2;
  var email = request.body.email;

  if (password == password2) {
    if (username && password && email) {
      bcrypt.hash(password, saltRounds, function(error, hash) {
        var sql = "INSERT INTO accounts (username, password, email ) VALUES ( ? , ? , ?)";
        connection.query(sql, [username, hash, email], function(error, results, fields) {
          if (error) throw error;
          console.log("1 record inserted");
          response.redirect('/login');
        })
      });
    };
  } else {
    console.log("Password not identical.");
  };
});

app.post('/auth', function(request, response) {
  var username = request.body.username;
  var password = request.body.password;

  if (username && password) {
    connection.query('SELECT password FROM accounts WHERE username = ?', [username], function(error, hash) {
      bcrypt.compare(password, hash[0].password, function(error, res) {
        if (res) {
          request.session.loggedin = true;
          request.session.username = username;
          response.redirect('/home');
        } else {
          response.send('Incorrect Username and/or Password!');
        }
        response.end();
      });
    });
  } else {
    response.send('Please enter Username and Password!');
    response.end();
  }
});

app.get('/signup', function(request, response) {
  response.sendFile(path.join(__dirname + '/signup.html'));
});

app.get('/login', function(request, response) {
  response.sendFile(path.join(__dirname + '/login.html'));
});

app.get('/home', function(request, response) {
  if (request.session.loggedin) {
    response.send('Welcome back, ' + request.session.username + '!');
  } else {
    response.send('Please login to view this page!');
  }
  response.end();
});

app.listen(3742);

每当我点击提交按钮时都会出现 404 错误 Error

Answer 1

<form action="/auth" method="POST">

因为你定义了而不是验证

app.post('/auth', function(request, response) {