我正在尝试制作一个包含电子邮件地址并发送回事务性电子邮件的表格。我在香草JavaScript中使用XMLHttpRequest将数据发送到服务器，但是当我查看从index.html发送的数据时，它在服务器端只是一个空对象。
在后端，我正在使用Node and Express和Nodemailer。Nodemailer正常工作。我一直试图找出为什么查询对象中没有任何内容。
// Here is server.js
var express = require('express');
var nodemailer = require('nodemailer');
var app = express();
// Send index.html
app.get('/', function(request, response) {
response.sendfile('index.html');
});
// Where I should receive data from JS written in index.html
app.post('/send', function(req, res) {
var mailOptions = {
to: req.query.to,
subject: req.query.subject,
text: req.query.text
}
});<!-- Here is my index.html with some JS in it -->
<div>
<input id="to" type="text" placeholder="Email" />
<input id="subject" type="text" placeholder="subject" />
<textarea id="content" cols="20" rows="2" placeholder="Write something"></textarea>
<button id="submit">Submit</button>
</div>
<script>
// When #submit is clicked it invokes a function to collect values and then makes a XMLHttpRequest like bellow
data = {to: to, subject: subject, text: text};
var request = new XMLHttpRequest();
request.open('GET', 'http://localhost:3000/send', true);
request.send(data);
}
</script>在此之前可以做的几件事
在您的服务器中，您需要将app.post代码替换为（您需要npm install body-parser）
var bodyParser = require('body-parser');
app.use(bodyParser.json()); // for parsing application/json
app.use(bodyParser.urlencoded({ extended: true })); // for parsing application/x-www-form-urlencoded
// Where I should receive data from JS written in index.html
app.post('/send', function(req, res) {
var mailOptions = {
to: req.body.to,
subject: req.body.subject,
text: req.body.text
}
});
这应该在客户端上起作用
data = {to: to, subject: subject, text: text};
var request = new XMLHttpRequest();
request.open('POST', 'http://localhost:3000/send', true);
xmlhttp.setRequestHeader("Content-Type", "application/json;charset=UTF-8");
request.send(JSON.stringify(data));
XMLHttpRequest的替代解决方案
或者，您可以通过HTTP api在此库中查找糖-axios
如果您使用的是axios，它就像
data = {to: to, subject: subject, text: text};
axios.post('/user', data);
或者如果您想控制收到回复后会发生什么。
data = {to: to, subject: subject, text: text};
axios.post('/user', data)
.then(function (response) {
console.log('success');
})
.catch(function (response) {
console.log('error');
});
本文收集自互联网，转载请注明来源。
如有侵权，请联系 [email protected] 删除。
我来说两句