Angular 6:在其中获取错误模块"rxjs/add/operator/map"的地方.并且类型'Observable< Response>'上不存在另一个错误'map'

问题描述

我在使用Angular 6时遇到两个错误-

I am using Angular 6 where I am getting two errors -

./src/app/app/app/img/img.service.ts中的

1. ERROR找不到模块:错误:无法解析"/Users/user/Projects/A4/imageSearch/src/app/app/img"中的"rxjs/add/operator/map"

1. ERROR in ./src/app/app/img/img.service.tsModule not found: Error: Can't resolve 'rxjs/add/operator/map' in '/Users/user/Projects/A4/imageSearch/src/app/app/img'

src/app/app/img/img.service.ts(21,9)中的错误:错误TS2339:可观察"类型上不存在属性地图".

ERROR in src/app/app/img/img.service.ts(21,9): error TS2339: Property 'map' does not exist on type 'Observable'.

推荐答案

我遇到了rxjs map运算符的类似问题.目前，我正在使用Angular6.要知道您使用的是哪个版本:

I faced similar problem with rxjs map operator. Currently I'm using Angular 6. To know which version you are using:

ng --version

或

ng -v

如果您还使用角度6，请结帐 https://www.academind.com/learn/javascript/rxjs-6-what-c​​hanged/

If you are also using angular 6, then please checkout https://www.academind.com/learn/javascript/rxjs-6-what-changed/

1. 不同的内部结构要求您更改导入语句
2. pipe()作为链接运算符的一种方法，旧的将其链接的方法将不起作用

假设您将map用于http.get方法:

Let's say you use map for http.get method:

import { map } from 'rxjs/operators';

private url = "some site...";
  constructor(private http: HttpClient) { }

  dailyForecast() {
    return this.http.get(this.url).pipe(map(result => result));
  }

否: this.http.get(this.url).map(result => result);

这篇关于Angular 6:在其中获取错误模块"rxjs/add/operator/map"的地方.并且类型'Observable< Response>'上不存在另一个错误'map'的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！