如何阅读 Angular 2 JSON #text

Question

抱歉，但我无法阅读 Angular 2&4 中非常具体的 JSON 值，我可以在其中获取并显示列表的名称但是！但我找不到在页面中显示的方法，例如我在 JSON 文档中所说的内容我有这种方式：（从 http://www.last.fm/api/show/artist.getTopAlbums 获得）并且我正在使用邮递员检查所有内容，我可以获取专辑名称和其他内容，但是获取#text 以使用图像很奇怪

"topalbums": {
    "album": [
      {
        "name": "The Very Best of Cher",
        "playcount": 1663904,
        "mbid": "a7e2dad7-e733-4bee-9db1-b31e3183eaf5",
        "url": "https://www.last.fm/music/Cher/The+Very+Best+of+Cher",
        "artist": {
          "name": "Cher",
          "mbid": "bfcc6d75-a6a5-4bc6-8282-47aec8531818",
          "url": "https://www.last.fm/music/Cher"
        },
      **// +++++++++++++++++++THIS PART +++++++++++++++++++++!!!!!** 
        "image": [
          {
            // I'M TRYING TO USE THIS INFORMATION
            "#text": "https://lastfm-img2.akamaized.net/i/u/34s/287bc1657795451399d8fadf64555e91.png",
            "size": "small"
          },
          {
            "#text": "https://lastfm-img2.akamaized.net/i/u/64s/287bc1657795451399d8fadf64555e91.png",
            "size": "medium"
          },
          {
            "#text": "https://lastfm-img2.akamaized.net/i/u/174s/287bc1657795451399d8fadf64555e91.png",
            "size": "large"
          },
          {
            "#text": "https://lastfm-img2.akamaized.net/i/u/300x300/287bc1657795451399d8fadf64555e91.png",
            "size": "extralarge"
          }
        ]
      },

我要的是获取图片的"url"，我尝试这样获取：

artist.component.html

<div *ngFor="let list of albumes">
  {{list.name}}
  <hr>
  <!-- Can't obtain the URL... -->
  <img src="{{list.image[1].text}}" alt="">
</div>

artist.component.ts

import { Component, OnInit } from '@angular/core';
import {ActivatedRoute} from '@angular/router';
import {MusicService} from "../../services/music.service";


@Component({
  selector: 'app-artist',
  templateUrl: './artist.component.html',
  providers: [MusicService]
})
export class ArtistComponent implements OnInit {

  constructor(private service: MusicService, private route: ActivatedRoute) { }

  albumes: any[];
  songs: any[];

  ngOnInit() {
    this.route.params.map(params => params['mbid']).subscribe(
      mbid => {
        // Top Album
        this.service.GetTopAlbumArtist(mbid).subscribe(topalbum => {
          this.albumes = topalbum.topalbums.album;
          console.log(topalbum.topalbums.image);
        });
        // Top Tracks
        // this.service.GetTopTracksArtist(mbid).subscribe(toptracks => {
        //   this.songs = toptracks;
        // });

      }
    )
  }
}

Answer 1

首先，如果你想获得 image array 的第一个位置，你应该访问位置 0（不是 1）...你也不知道没有 text 但 #text:

要解决您的问题，您可以这样做：

src="{{list.image[0]['#text']}}"

甚至更好:

[src]="list.image[0]['#text']"

如何阅读 Angular 2 JSON #text

How to read in Angular 2 the JSON #text

json

angular2-forms

angular