如何在调用api时在angular中获取错误响应？

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

constructor(private http: HttpClient) { }

this.http.get(url).subscribe(
  (response) => {
    // 处理成功响应
  },
  (error: HttpErrorResponse) => {
    // 处理错误响应
    if (error.error instanceof ErrorEvent) {
      // 客户端错误，如网络连接问题
      console.error('An error occurred:', error.error.message);
    } else {
      // 服务器返回的错误响应
      console.error(
        `Backend returned code ${error.status}, ` +
        `body was: ${error.error}`
      );
    }
  }
);