我正在尝试向 Express JS 服务器提交表单，但我没有在后端获取任何表单数据。
这是我的 HTML。
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>File Uploader</title>
<style>
body {
font-family: Arial, sans-serif;
margin: 20px;
display: flex;
justify-content: space-between;
}
.column {
width: 45%;
}
#response1, #response2 {
margin-top: 20px;
font-weight: bold;
}
</style>
<script>
async function submitForm(event) {
event.preventDefault();
const formData = new FormData(document.getElementById('form'));
try {
const response = await fetch('/submit', {
method: 'POST',
body: formData
});
if (!response.ok) {
throw new Error('Failed to submit Form 1');
}
const result = await response.json();
document.getElementById('response').innerText = result.message;
} catch (error) {
console.error('Error:', error);
document.getElementById('response').innerText = 'Error: ' + error.message;
}
}
</script>
</head>
<body>
<div class="column">
<h2>Form 1</h2>
<form id="form" onsubmit="submitForm(event)">
<label for="id">Id:</label><br>
<input type="text" id="id" name="id" required><br><br>
<label for="filename">File Name:</label><br>
<input type="text" id="filename" name="filename" required><br><br>
<label for="filepath">File Path:</label><br>
<input type="text" id="filepath" name="filepath" required><br><br>
<button type="submit">Submit</button>
</form>
<div id="response"></div>
</div>
</body>
</html>
这里是express JS应用程序
import { ExtService } from "./extService";
var express = require('express');
const bodyParser = require('body-parser');
const path = require('path');
const cors = require('cors')
var app = express();
app.use(bodyParser.urlencoded({ extended: true }));
app.use(express.static(path.join(__dirname, 'public')));
app.use(cors());
app.use(express.json())
const PORT = 3000;
app.post('/submit', async (req, res) => {
const { id, filename, filepath } = req.body;
console.log(id);
const params = req.body;
console.log(params);
console.log('id: '+ params.id);
const extService = new ExtService();
const response = await extService.create(id, filename, filepath);
res.send(response);
});
app.listen(PORT, function () {
console.log('Example app listening on port 3000!');
});
当我尝试打印
idparamsHTML 文件放置在公共文件夹中，如下所示
index.html在后端添加此方法来加载index.html页面后，它就起作用了。
app.get('/', (req, res) => {
res.sendFile(__dirname + '/public/index.html');
});