TypeError：对象不支持属性或方法“ json”

Question

  

我在处理此.json时遇到麻烦，它一直在说“对象没有   支持属性或方法“ json””。我是否必须添加其他导入   为了这个？指导我，谢谢您将来的回答。

import { HttpClientModule, HttpClient } from '@angular/common/http';
import { map } from 'rxjs/operators';
import { Response } from "@angular/http";
import { Injectable } from '@angular/core';

/*
  Generated class for the DataServiceProvider provider.

  See https://angular.io/guide/dependency-injection for more info on 
providers
  and Angular DI.
*/

@Injectable()
export class DataServiceProvider {

  constructor(private http: HttpClient) {
    console.log('Hello DataServiceProvider Provider');
  }
      getMenus(){
      return this.http.get('assets/data/menus.json')
       .pipe(map((response:Response)=>response.json()));
    }
}

Answer 1

您不需要.json。不再需要自己调用此函数。

 return this.http.get('assets/data/menus.json')
       .pipe(map((response:Response)=>response));