我正在编写 Node.js 脚本，但在集成“登录”表单时遇到问题。我可以使用静态 HTML 页面来完成此操作，但是使用动态“.ejs”页面会导致问题...我的表单字段被报告为“未定义”。
var helmet = require('helmet');
var bodyParser = require('body-parser')
//var cookieParser = require('cookie-parser');
//var csurf = require('csurf');
//Use Express module
var express = require('express');
var app = express();
var io = require("socket.io"); //web socket external module
var easyrtc = require("easyrtc"); //EasyRTC external module
app.use(helmet());
//Statically serve files in these directories
app.use("/js", express.static(__dirname + '/easyrtc/js'));
app.use("/images", express.static(__dirname + '/easyrtc/images'));
app.use("/css", express.static(__dirname + '/easyrtc/css'));
//For my homepage
app.set('views', __dirname + '/views');
app.set('view engine', 'ejs') //set the view engine to ejs
app.use("/css", express.static(__dirname + '/public/css'));
app.use("/img", express.static(__dirname + '/public/img'));
//Needed to parse form data
app.use(bodyParser());
//var csrfProtection = csurf({ cookie: true });
//parse cookies...we need this because "cookie" is true in csrfProtection
//app.use(cookieParser());
//global variables
var loggedIn = false,
password = 'password';
var title = 'This is a heading';
var message = 'Steve is NOT available';
var presenter = 'Username'
var passport = 'Password'
//Temporary home page
app.get('/', function (req, res) {
var site = req.hostname; //example returns "localhost"
var splits = site.split("."); //"split" on "periods"
console.log("site is: " + site);
console.log("first split is: " + splits[0]);
console.log("second split is: " + splits[1]);
if (loggedIn == true) {
res.render('index', {title: 'available', message: 'Steve is available...'});
console.log("homepage -logged in");
}
else {
console.log("homepage -not logged in");
res.render('login', {
usr: {},
pword: {},
data: {},
errors: {}//,
// csrfToken: req.csrfToken()
});
}
});
//Respond to POST from login form
app.post('/login', function (req, res) {
console.log('post to /login');
var usr_STR = String(req.body.usr)
var pass_STR = String(req.body.pword)
console.log("req.body.usr: " + req.body.usr + " req.body.pword: " + req.body.pword);
console.log("usr_STR: " + usr_STR + " pass_STR: " + pass_STR);
if (loggedIn == true) {
res.send("Already logged in.");
}
else {
console.log("Posted data:" + JSON.stringify(req.body));
console.log("req.body.pw:" + req.body.pw);
console.log("req.body.pword:" + req.body.pword);
console.log("req.body.usr:" + req.body.usr);
if (req.body.pword == password) {
loggedIn = true;
res.send("You are logged in.");
console.log("Logged in");
// Start EasyRTC server
var easyrtcServer = easyrtc.listen(app, socketServer);
}
else {
res.render('login', {
data: req.body, //{ presenter, passport }
errors: {
presenter: {
msg: 'Your username does not look right'
},
passport: {
msg: 'Your password does not look right'
}
}//,
// csrfToken: req.csrfToken()
});
}
}
});
//Error Handling
app.use((req, res, next) => {
res.status(404).send("Sorry can't find that!")
});
app.use((err, req, res, next) => {
console.error(err.stack)
res.status(500).send('Something broke!')
});
// Start server on port 8080
var webServer = app.listen(8080);
console.log('Listening on port ' + 80);
// Start Socket.io so it attaches itself to Express server
var socketServer = io.listen(webServer);
我看到我的控制台向我报告以下内容：
Posted data:{}
req.body.pword:undefined
req.body.usr:undefined
我对使用 Node.Js 还有些陌生，显然我对如何将参数从我的 (.ejs) 表单传递到 req.body 中的路由处理程序有些困惑......任何建议将不胜感激，我真的很努力想弄清楚这一点。先感谢您。问候。
注意：从我的代码中可以看出，我删除了对“csurf”和“cookieparser”的引用，因为在我之前的运行中，此信息是在“req.body”中返回的......所以我认为它们在某种程度上干扰了.. .但是似乎还有其他事情发生。
以下是登录表单的关联 HTML：
<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="width=device-width, initial-scale=1">
</head>
<body>
<div class="form-header">
<% if (Object.keys(errors).length === 0) { %>
<h2>Login Form</h2>
<% } else { %>
<h2 class="errors-heading">Oops, please correct the following:</h2>
<ul class="errors-list">
<% Object.values(errors).forEach(error => { %>
<li><%= error.msg %></li>
<% }) %>
</ul>
<% } %>
</div>
<form method="post" action="/login" novalidate>
<div class="imgcontainer">
<img src="img_avatar2.png" alt="Avatar" class="avatar">
</div>
<div class="container">
<label for="usr"><b>Username</b></label>
<input type="text" placeholder=<%= data.presenter %> name="usr" required>
<% if (errors.presenter) { %>
<div class="error"><%= errors.presenter.msg %></div>
<% } %>
<label for="pword"><b>Password</b></label>
<input type="password" placeholder=<%= data.passport %> name="pword" required>
<% if (errors.passport) { %>
<div class="error"><%= errors.passport.msg %></div>
<% } %>
<button type="submit">Login</button>
</div>
<div class="container" style="background-color:#f1f1f1">
<button type="button" class="cancelbtn">Cancel</button>
<span class="psw">Forgot <a href="#">password?</a></span>
</div>
</form>
</body>
</html>
