http observable<any> - Angular 4 - html

Question

I need to display the data on html that I get from web service. I am able to see the data in a format that I want, but I can't display properly on html. I think -any- in http.get is the problem. I can read data in console without -any- but it works fine with . When it works with it, it still does not print in html properly. Can anyone provide advice on this?
html
<div>{{this.res}}</div>
app.component.ts
import { Component, OnInit } from '#angular/core';
//import { IMovie } from './movie';
import { AppService } from './app.service';
#Component({
selector: 'app-root',
templateUrl: './app.component.html',
styleUrls: ['./app.component.css']
})
export class AppComponent implements OnInit {
res: any[] ;
errorMessage: string;
constructor(private _appService: AppService) { }
ngOnInit(): void { this.getData(); }
getData(): void {
this._appService.getData()
.subscribe(
(res: any []) => this.res = res,
(error: any) => this.errorMessage = <any>error);
}
}
app.service.ts :
Injectable()
export class AppService {
private urlNorth = '';
constructor(private http: HttpClient) { }
getData(): Observable<any> {
const headers = new HttpHeaders();
headers.set('Content-Type', 'text/sml');
headers.set('Accept', 'text/xml');
headers.set('Content-Type', 'text/xml');
return this.http.get<any>(this.urlNorth,{responseType:'text', headers: headers})
.do(data => {
// console.log(data)
var dataParsed = data.replace('<string xmlns="service">', '').replace('</string>', '').replace(/</g, '<').replace(/>/g, '>');
// console.log(dataParsed);
parseString(dataParsed, (err, res) => {
if (err) {
return console.dir('invalid XML');
}
else {
console.log(res);
console.log(res.NewDataSet.Table[0].DataPointName[0]);
}
})
})
.catch(this.handleError);
}
**data in console w/o any **
{{this.res}} in html

Answer 1

I'm pretty sure you don't have to put any at this line in app.service.ts
return this.http.get<any>(this.urlNorth,{responseType:'text', headers: headers})
because get method expects 0 type arguments.

Answer 2

Type any is not the problem. It's just TypeScript annotation to organise your code. The problem is you are refering to the res in inline template as this.res, but you should just res. However it won't work as you think. Looking at your data structure You will have to iterate throught this data due to Table is an array. Additionaly I Highly suggest to always represnt your data as class
export class Apps {
public Table: Array<any>; //here should be another type instead of "any"
/* rest of data if any */
}
Back to your question you should have in your html file <div>{{res}}</div> but that's just print your object as string if I good remember. So to properly access your data you should iterate through table using *ngFor
<div *ngFor="let el of res.NewDataSet.Table">
<span>{{el.BackColor}}</span>
<!-- all other data -->
</div>

Answer 3

It looks as though the data is coming back. I'll answer your initial question first (since you added a few issues in comments):
My guess is when you get data back, it's not showing because it's HTML, and angular doesn't like injecting html.
Add this to your TS:
import { DomSanitizer, SafeHtml } from '#angular/platform-browser';
res[]: safeHTML;
And change your html to this:
<div [innerHTML]="res"></div>
As mentioned in a previous answer, this is a solution for a single return of res, not an array of different htmls. If it's an array, you'll have to handle it accordingly. for instance:
<ng-container *ngFor="let r of res">
<div [innerHTML]="r">
</ng-container>