如何接收来自节点js的post，以及从Angular前端发送的表单数据

npm install express

const express = require('express');
const app = express();
const port = 3000;

// 解析 application/x-www-form-urlencoded
app.use(express.urlencoded({ extended: false }));

// 解析 application/json
app.use(express.json());

app.post('/submit', (req, res) => {
  console.log(req.body); // 这里可以获取到前端发送的数据
  res.send('Data received!');
});

app.listen(port, () => {
  console.log(`Server running at http://localhost:${port}/`);
});

import { Injectable } from '@angular/core';
import { HttpClient } from '@angular/common/http';

@Injectable({
  providedIn: 'root'
})
export class DataService {
  private apiUrl = 'http://localhost:3000/submit'; // Node.js服务器的URL

  constructor(private http: HttpClient) {}

  submitFormData(formData: any) {
    return this.http.post(this.apiUrl, formData);
  }
}

import { Component } from '@angular/core';
import { DataService } from './data.service';

@Component({
  selector: 'app-root',
  template: `
    <form (ngSubmit)="onSubmit()">
      <input type="text" [(ngModel)]="formData.name" name="name" required>
      <input type="email" [(ngModel)]="formData.email" name="email" required>
      <button type="submit">Submit</button>
    </form>
  `
})
export class AppComponent {
  formData = { name: '', email: '' };

  constructor(private dataService: DataService) {}

  onSubmit() {
    this.dataService.submitFormData(this.formData).subscribe(response => {
      console.log(response);
    });
  }
}

const cors = require('cors');
app.use(cors());