Angular2 -如何将Rails json错误响应分解为字符串

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

// ...

export class YourComponent {
  constructor(private http: HttpClient) {}

  handleRailsErrorResponse() {
    this.http.get('your_rails_api_url').subscribe(
      (response) => {
        // 处理成功响应
      },
      (error: HttpErrorResponse) => {
        if (error.error instanceof ErrorEvent) {
          // 处理客户端错误
          console.error('An error occurred:', error.error.message);
        } else {
          // 处理服务器端错误
          console.error(
            `Backend returned code ${error.status}, ` +
            `body was: ${JSON.stringify(error.error)}`
          );
        }
      }
    );
  }
}