在angular 7中显示http post之后的数据

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

@NgModule({
  declarations: [
    // ...
  ],
  imports: [
    // ...
    HttpClientModule
  ],
  providers: [],
  bootstrap: [AppComponent]
})
export class AppModule { }

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

@Injectable({
  providedIn: 'root'
})
export class DataService {
  private apiUrl = 'https://your-api-endpoint.com/data';

  constructor(private http: HttpClient) { }

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

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

@Component({
  selector: 'app-post-data',
  template: `
    <div *ngIf="responseData">
      <h2>Response Data:</h2>
      <pre>{{ responseData | json }}</pre>
    </div>
  `
})
export class PostDataComponent implements OnInit {
  responseData: any;

  constructor(private dataService: DataService) { }

  ngOnInit(): void {
    const postData = { key: 'value' }; // 替换为你的数据
    this.dataService.postData(postData).subscribe(
      response => {
        this.responseData = response;
      },
      error => {
        console.error('There was an error!', error);
      }
    );
  }
}

this.dataService.postData(postData).subscribe(
  response => {
    this.responseData = response;
  },
  error => {
    console.error('There was an error!', error);
    // 可以在这里添加更多的错误处理逻辑
  }
);