如何使用服务器端代码从http post头中获取表单数据

npm install express

const express = require('express');
const bodyParser = require('body-parser');

const app = express();
app.use(bodyParser.urlencoded({ extended: true }));

app.post('/form', (req, res) => {
  const formData = req.body;
  // 处理表单数据
  // ...
  res.send('Success');
});

app.listen(3000, () => {
  console.log('Server started on port 3000');
});

import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class FormServlet extends HttpServlet {
  protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
    String formData = request.getParameter("formData");
    // 处理表单数据
    // ...
    response.getWriter().println("Success");
  }
}

<web-app>
  <servlet>
    <servlet-name>FormServlet</servlet-name>
    <servlet-class>com.example.FormServlet</servlet-class>
  </servlet>
  <servlet-mapping>
    <servlet-name>FormServlet</servlet-name>
    <url-pattern>/form</url-pattern>
  </servlet-mapping>
</web-app>

pip install flask

from flask import Flask, request

app = Flask(__name__)

@app.route('/form', methods=['POST'])
def handle_form():
    formData = request.form
    # 处理表单数据
    # ...
    return 'Success'

if __name__ == '__main__':
    app.run()