angular 4 httpclient在错误时获取post请求的正文

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

@NgModule({
  imports: [
    HttpClientModule
  ],
  ...
})
export class AppModule { }

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

constructor(private http: HttpClient) { }

this.http.post(url, data).subscribe(
  response => {
    // 处理响应数据
  },
  error => {
    // 处理错误
    if (error instanceof HttpErrorResponse) {
      console.log('请求出错:', error.message);
      console.log('请求正文:', error.error);
    }
  }
);