我正在构建一个角度提供者,它使用HTTP从电影数据库API获取数据。
但是,尽管我在使用该提供者的页面中得到了这些错误:
因此,提供者和页的源代码是:
TMDB.TS公司
import { Injectable } from '@angular/core';
import { Http, Headers, RequestOptions, Response } from '@angular/http';
import 'rxjs/add/operator/map';
import 'rxjs/add/operator/catch';
import {Observable} from 'rxjs/Rx';
@Injectable()
export class TMDB {
apiUrl: string = "https://api.themoviedb.org/3";
apiKey: string = "xxx";
apiLang: string = "pt-BR";
posterLargePath: string = "https://image.tmdb.org/t/p/w500_and_h281_bestv2";
posterMiniPath: string = "https://image.tmdb.org/t/p/w116_and_h174_bestv2";
constructor(public http: Http) {
}
getSearchMovie(query: string){
let body = {"api_key":this.apiKey, "language":this.apiLang, "query":query, "include_adult": false};
let headers = new Headers({ 'Content-Type': 'application/json' });
let options = new RequestOptions({ headers: headers });
return this.http.get(this.apiUrl + "/search/movie?" + JSON.stringify(body), options)
.map((res:Response) => res.json())
.catch((error:any) => Observable.throw(error.json().error || 'Server error'))
}
getDiscoverMovies(){
let body = {"api_key":this.apiKey, "language":this.apiLang, "page":1, "sort_by":"popularity.desc", "include_video": false, "include_adult": false};
let headers = new Headers({ 'Content-Type': 'application/json' });
let options = new RequestOptions({ headers: headers });
return this.http.get(this.apiUrl + "/discover/movie?" + JSON.stringify(body), options)
.map((res:Response) => res.json())
.catch((error:any) => Observable.throw(error.json().error || 'Server error'))
}
getPosterLargeUrl(){
return this.posterLargePath;
}
getPosterMiniUrl(){
return this.posterMiniPath;
}
}
第.ts页
import { Component } from '@angular/core';
//import{ Http } from '@angular/http';
import { NavController } from 'ionic-angular';
//import 'rxjs/add/operator/map'
import { TMDB } from '../../providers/tmdb.ts';
@Component({
selector: 'page-home',
templateUrl: 'home.html'
//,providers: [TMDB]
})
export class HomePage {
discoverMovies: any;
posterMiniPath: string;
posterLargePath: string;
constructor(public navCtrl: NavController) {
TMDB.getDiscoverMovies().subscribe(
movies => this.discoverMovies = movies, //Bind to view
err => {
// Log errors if any
console.log(err);
});
this.posterMiniPath = TMDB.getPosterMiniUrl();
this.posterLargePath = TMDB.getPosterLargeUrl();
}
}
我要知道那是虫子。有人能帮我吗?记住我用的是离子框架。
编辑1:
import { Component } from '@angular/core';
import { NavController } from 'ionic-angular';
import { TMDB } from '../../providers/tmdb.ts';
@Component({
selector: 'page-home',
templateUrl: 'home.html',
providers: [TMDB]
})
export class HomePage {
discoverMovies: any;
posterMiniPath: string;
posterLargePath: string;
constructor(public navCtrl: NavController, public tmdb: TMDB) {
tmdb.getDiscoverMovies().subscribe(
movies => this.discoverMovies = movies,
err => {
console.log(err);
});
this.posterMiniPath = tmdb.getPosterMiniUrl();
this.posterLargePath = tmdb.getPosterLargeUrl();
}
}
编辑2:
应用模块:
import { NgModule } from '@angular/core';
import { IonicApp, IonicModule } from 'ionic-angular';
import { MyApp } from './app.component';
import { HomePage } from '../pages/home/home';
import { PageIntro } from '../pages/intro/page';
import { TMDB } from '../providers/tmdb.ts';
@NgModule({
declarations: [
MyApp,
HomePage,
PageIntro
],
imports: [
IonicModule.forRoot(MyApp)
],
bootstrap: [IonicApp],
entryComponents: [
MyApp,
HomePage,
PageIntro
],
providers: [ TMDB ]
})
export class AppModule {}
TMDB.TS公司:
import { Injectable } from '@angular/core';
import { Http, Headers, RequestOptions, Response } from '@angular/http';
import 'rxjs/add/operator/map';
import 'rxjs/add/operator/catch';
import {Observable} from 'rxjs/Rx';
/*
Generated class for the TMDB provider.
See https://angular.io/docs/ts/latest/guide/dependency-injection.html
for more info on providers and Angular 2 DI.
*/
@Injectable()
export class TMDB {
apiUrl: string = "https://api.themoviedb.org/3";
apiKey: string = "xxxx";
apiLang: string = "pt-BR";
posterLargePath: string = "https://image.tmdb.org/t/p/w500_and_h281_bestv2";
posterMiniPath: string = "https://image.tmdb.org/t/p/w116_and_h174_bestv2";
constructor(public http: Http) {
}
getSearchMovie(query: string){
let body = {"api_key":this.apiKey, "language":this.apiLang, "query":query, "include_adult": false};
let headers = new Headers({ 'Content-Type': 'application/json' });
let options = new RequestOptions({ headers: headers });
return this.http.get(this.apiUrl + "/search/movie?" + JSON.stringify(body), options)
.map((res:Response) => res.json())
.catch((error:any) => Observable.throw(error.json().error || 'Server error'))
}
getDiscoverMovies(){
let body = {"api_key":this.apiKey, "language":this.apiLang, "page":1, "sort_by":"popularity.desc", "include_video": false, "include_adult": false};
let headers = new Headers({ 'Content-Type': 'application/json' });
let options = new RequestOptions({ headers: headers });
return this.http.get(this.apiUrl + "/discover/movie?" + JSON.stringify(body), options)
.map((res:Response) => res.json())
.catch((error:any) => Observable.throw(error.json().error || 'Server error'))
}
getPosterLargeUrl(){
return this.posterLargePath;
}
getPosterMiniUrl(){
return this.posterMiniPath;
}
}
最佳答案
当它是一个实例方法时,您试图静态地调用TMDB.getDiscoverMovies
。你应该怎么做。您应该做的是将它添加到@NgModule.providers
,然后将其注入HomePage
@NgModule({
providers: [ TMDB ]
})
class AppModule {}
@Component({})
class HomePage {
constructor(private tmdb: TMDB) {
tmdb.getDiscoverMovies().subscribe(
movies => this.discoverMovies = movies, //Bind to view
err => console.log(err));
this.posterMiniPath = tmdb.getPosterMiniUrl();
this.posterLargePath = tmdb.getPosterLargeUrl();
}
}
注意,我们现在使用
TMDB
作为实例,而不是静态的。