Ich bin Neuling zu MEAN Stack-Entwicklung. Also, bitte hilf mir das Problem herauszufinden.Ich bekomme keine Antwort von NodeJS Server in Winkel 2
app.js
const express = require('express');
const app = express();
const path = require('path');
app.use(express.static(path.join(__dirname, './darwin-src/public')));
const port = 3000;
app.get('/images', (req, res) => {
console.log('In server');
var data;
var Scraper = require ('images-scraper')
, google = new Scraper.Google();
google.list({
keyword: 'banana',
num: 10,
detail: true,
nightmare: {
show: false
}
})
.then(function (data) {
console.log('first 10 results from google', data);
res.end("" + data);
})
.catch(function(err) {
console.log('err', err);
});
});
app.listen(port,() => {
console.log(`Starting the server at port ${port}`);
});
bild service.service.ts
import { Injectable } from '@angular/core';
import { Http, Headers } from '@angular/http';
import { Observable } from 'rxjs/Observable';
import { Image } from './model/image';
import 'rxjs/add/operator/map';
import 'rxjs/add/operator/catch';
import 'rxjs/add/observable/throw';
import 'rxjs/add/observable/of';
@Injectable()
export class ImageServiceService {
constructor(private http: Http) { }
private serverApi = 'http://localhost:3000';
public getImages(image: string): Observable<Image[]> {
console.log('Inside Service');
let URI = `${this.serverApi}/images`;
return this.http.get(URI)
.map(function(res) {
return res.json();
});
}
}
bild view.component.ts
import { Component, OnInit } from '@angular/core';
import { ImageServiceService } from '../image-service.service';
import { Image } from '../model/image';
@Component({
selector: 'app-image-view',
templateUrl: './image-view.component.html',
styleUrls: ['./image-view.component.css']
})
export class ImageViewComponent implements OnInit {
private data: Image[] = [];
constructor(private imageService: ImageServiceService) { }
ngOnInit() {
}
onSubmit(image: string) {
console.log(image);
this.imageService.getImages(image).subscribe(response => this.data = response);
console.log(this.data.length);
}
}
The Länge des Arrays ist Null und ich kann nicht herausfinden warum. Die Antwort kommt nach einer Weile auf der Konsole von nodejs, aber das Frontend zeigt das Ergebnis an, bevor die Antwort kommt. Bitte helfen Sie!