Package.json

Question

我正在使用Angular 2构建一个MEAN堆栈应用程序。

我知道在StackOverflow上多次询问过这个问题。我一直在研究问题并尝试不同的建议。对于大多数人来说，导入整个rx / js库并映射或导入：

import { Observable } from 'rxjs/Observable';
import 'rxjs/add/operator/map';

似乎解决了这个问题。我一直在尝试不同的组合，但无济于事。我一直在我的服务中的.map的所有实例上得到错误。我尝试更新我的全局打字稿，以及我在依赖项中使用的打字稿版本。在发送＆＃39;后，我在终端中收到错误。我认为这是一个打字稿问题，但我不确定 - 错误有点模糊，因为导入observable并没有解决它。

Package.json

{
  "name": "aether-news",
  "version": "0.0.0",
  "license": "MIT",
  "scripts": {
    "ng": "ng",
    "start": "ng serve",
    "build": "ng build",
    "test": "ng test",
    "lint": "ng lint",
    "e2e": "ng e2e"
  },
  "private": true,
  "dependencies": {
    "@angular/common": "^2.4.0",
    "@angular/compiler": "^2.4.0",
    "@angular/core": "^2.4.0",
    "@angular/forms": "^2.4.0",
    "@angular/http": "^2.4.0",
    "@angular/platform-browser": "^2.4.0",
    "@angular/platform-browser-dynamic": "^2.4.0",
    "@angular/router": "^3.4.0",
    "@types/googlemaps": "^3.26.8",
    "@types/jquery": "^2.0.43",
    "@types/lodash": "^4.14.62",
    "@types/underscore": "^1.8.0",
    "amcharts3-angular2": "github:amcharts/amcharts3-angular2",
    "angular2-google-maps": "^0.17.0",
    "core-js": "^2.4.1",
    "dotenv": "^4.0.0",
    "jquery": "^3.2.1",
    "lodash": "^4.17.4",
    "ng2-google-charts": "^2.1.0",
    "rxjs": "^5.1.0",
    "tslint": "^4.4.2",
    "typescript": "^2.4.2",
    "underscore": "^1.8.3",
    "zone.js": "^0.7.6"
  },
  "devDependencies": {
    "@angular/cli": "1.0.0-rc.0",
    "@angular/compiler-cli": "^2.4.0",
    "@types/jasmine": "2.5.38",
    "@types/node": "~6.0.60",
    "codelyzer": "~2.0.0",
    "jasmine-core": "~2.5.2",
    "jasmine-spec-reporter": "~3.2.0",
    "karma": "~1.4.1",
    "karma-chrome-launcher": "~2.0.0",
    "karma-cli": "~1.0.1",
    "karma-coverage-istanbul-reporter": "^0.2.0",
    "karma-jasmine": "~1.1.0",
    "karma-jasmine-html-reporter": "^0.2.2",
    "protractor": "~5.1.0",
    "ts-node": "~2.0.0",
    "tslint": "~4.4.2",
    "typescript": "^2.4.2",
    "upgrade": "^1.1.0"
  }
}

导入我的服务

import { Injectable } from '@angular/core';
import { Http, Response, Headers, RequestOptions } from '@angular/http';
import { Router } from '@angular/router';
import { Observable } from 'rxjs/Observable';
import 'rxjs/add/operator/map';

服务代码

import { Injectable } from '@angular/core';
import { Http, Response, Headers, RequestOptions } from '@angular/http';
import { Router } from '@angular/router';
import { Observable } from 'rxjs/Observable';
import 'rxjs/add/operator/map';


@Injectable()
export class NewsApiService {

  public bingToken: string;
  public bbc: any;
  public bingWorld: any;
  public bingPolitics: any;
  public apNews: any;
  public googleNews: any;
  public economistNews: any;
  public nytNews: any;
  public wapoNews: any;
  public cnnNews: any;
  public newsweekNews: any;
  public reutersNews: any;
  public guardianUkNews: any;
  public guardianAuNews: any;
  public huffPostNews: any;
  public wsjNews: any;

  public eventRegistryBBC: any;
  public eventRegistryGuardian: any;
  public eventRegistryCNN: any;
  public eventRegistryWAPO: any;
  public eventRegistryReuters: any;
  public eventRegistryNYT: any;
  public eventRegistryEconomist: any;
  public eventRegistryAP: any;
  public eventRegistryWSJ: any;
  public eventRegistryNewswire: any;

  constructor(
    private http: Http,
    private router: Router
  ) {}


//EVENT REGISTRY
//BBC
getEventRegistryBBC(){
  return this.http.get("http://eventregistry.org/json/article?sourceUri=bbc.co.uk&sourceUri=bbc.com&categoryUri=dmoz%2FSociety%2FPolitics&action=getArticles&articlesSortBy=date&resultType=articles&articlesCount=200&articlesIncludeArticleDuplicateList=true&articlesIncludeArticleCategories=true&articlesIncludeConceptImage=true&articlesIncludeConceptDescription=true&articlesIncludeConceptDetails=true&articlesIncludeConceptTrendingScore=true&articlesIncludeSourceDescription=true&articlesIncludeArticleImage=true&articlesIncludeSourceDetails=true")
    .map((res) => {
      this.eventRegistryBBC = res.json()
      return res.json().articles.results;
    })
}

非常好奇人们是否面临同样的问题，即使正确导入rxjs也是如此。谢谢你的帮助。

Answer 1

在我的所有服务中，他们都会输入（请参阅Observable）并且他们没有多次退货 - 我不确定如何/如果这样做。

我的服务返回this.http.get - etc - 并使用response.json（）映射响应。

在我的组件中，我订阅了Observable并进行任何进一步的数据处理以提取特定数据。

也许尝试这样的事情？

getEventRegistryBBC(): Observable<Response>{
  return this.http.get("http://eventregistry.org/json/article?sourceUri=bbc.co.uk&sourceUri=bbc.com&categoryUri=dmoz%2FSociety%2FPolitics&action=getArticles&articlesSortBy=date&resultType=articles&articlesCount=200&articlesIncludeArticleDuplicateList=true&articlesIncludeArticleCategories=true&articlesIncludeConceptImage=true&articlesIncludeConceptDescription=true&articlesIncludeConceptDetails=true&articlesIncludeConceptTrendingScore=true&articlesIncludeSourceDescription=true&articlesIncludeArticleImage=true&articlesIncludeSourceDetails=true")
  .map(response => response.json())
}

尽管有适当的rxjs进口，但物业＆＃39; map＆＃39;在类型＆＃39; Observable <response>＆＃39;上不存在

Package.json

导入我的服务

服务代码

1 个答案: