如何在Angular中编写单个post服务并动态多次调用它？

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

@Injectable({
  providedIn: 'root'
})
export class PostService {
  constructor(private http: HttpClient) { }

  postData(url: string, data: any): Observable<any> {
    return this.http.post(url, data);
  }
}

import { Component } from '@angular/core';
import { PostService } from './post.service';

@Component({
  selector: 'app-my-component',
  template: `
    <button (click)="sendPostRequest()">发送POST请求</button>
  `
})
export class MyComponent {
  constructor(private postService: PostService) { }

  sendPostRequest() {
    const url = 'https://api.example.com/post';
    const data = { name: 'John', age: 30 };

    this.postService.postData(url, data).subscribe(
      response => {
        console.log(response);
        // 处理响应数据
      },
      error => {
        console.error(error);
        // 处理错误
      }
    );
  }
}