如何使用离子角度将参数从component.ts传递到server.ts？

param: any = "example";

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

constructor(private http: HttpClient) {}

sendParamToServer() {
  const url = '服务器URL地址';
  const body = { param: this.param };

  this.http.post(url, body).subscribe(response => {
    // 处理服务器返回的响应
  });
}

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

app.use(express.json());

app.post('/', (req, res) => {
  const param = req.body.param;
  // 处理接收到的参数
  // ...

  // 返回响应给component.ts
  res.send('参数已接收并处理');
});

app.listen(3000, () => {
  console.log('服务器已启动');
});