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Ich benutze Winkel 2, um Daten von einem Restfull-Service zu zeigen.Angular 2 http Versprechen nicht korrekt das Objekt
Wenn ich den API-Aufruf mit meinem Dienst, ist es möglich, die JSON-Ausgabe von Fitbit API zu sehen. Aber wenn ich die Daten einer Klasse angular2 zuordnen will, geht etwas schief und ich kann die Daten nicht sehen.
constructor (private http: Http) {}
getHeartrates(): Promise<HeartRate> {
let headers = new Headers({ 'Authorization': 'Bearer eyJhbGciOiJIUzI1NiJ9.eyJzdWIiOiI1TE1ENkMiLCJhdWQiOiIyMjg5OUciLCJpc3MiOiJGaXRiaXQiLCJ0eXAiOiJhY2Nlc3NfdG9rZW4iLCJzY29wZXMiOiJyc29jIHJzZXQgcmFjdCBybG9jIHJ3ZWkgcmhyIHJudXQgcnBybyByc2xlIiwiZXhwIjoxNDkyNTIxMTQ0LCJpYXQiOjE0OTE5MTYzNDR9.aP44gsdkQXmlRlkN65cEVKXNmqMWZXECOMzP0tDJzng' });
headers.append('Accept', 'application/json');
let options = new RequestOptions({ headers: headers });
return this.http.get(this.heartrateUrl, options)
.toPromise()
.then(this.extractData)
.catch(this.handleError);
}
private extractData(res: Response) {
let body = res.json();
// let newbody = JSON.parse(body);
return body || {};
}
private handleError (error: Response | any) {
// In a real world app, we might use a remote logging infrastructure
let errMsg: string;
if (error instanceof Response) {
const body = error.json() || '';
const err = body.error || JSON.stringify(body);
errMsg = `${error.status} - ${error.statusText || ''} ${err}`;
} else {
errMsg = error.message ? error.message : error.toString();
}
console.error(errMsg);
return Promise.reject(errMsg);
}export class HeartRate {
activities_heart: ActivitiesHeart[];
activities_heart_intraday: ActivitiesHeartIntraday;
}
class HeartRateZone {
caloriesOut: number;
max: number;
min: number;
minutes: number;
name: string;
}
class ActivitiesHeart {
customHeartRateZones: any[];
dateTime: string;
heartRateZones: HeartRateZone[];
value: string;
}
class Dataset {
time: string;
value: number;
}
class ActivitiesHeartIntraday {
dataset: Dataset[];
datasetInterval: number;
datasetType: string;
}<h2>Show something about heartrates</h2>
<p>{{ heartratelist?.activities_heart_intraday?.dataset[0]?.value }}</p>
<ul *ngFor="#item of heartratelist?.activities_heart_intraday?.dataset">
<li>{{item.value}}</li>
</ul>Dies ist, was die json
{
\t "activities-heart": [{
\t \t "customHeartRateZones": [],
\t \t "dateTime": "today",
\t \t "heartRateZones": [{
\t \t \t "caloriesOut": 26.01129,
\t \t \t "max": 97,
\t \t \t "min": 30,
\t \t \t "minutes": 14,
\t \t \t "name": "Out of Range"
\t \t }, {
\t \t \t "caloriesOut": 0,
\t \t \t "max": 135,
\t \t \t "min": 97,
\t \t \t "minutes": 0,
\t \t \t "name": "Fat Burn"
\t \t }, {
\t \t \t "caloriesOut": 0,
\t \t \t "max": 164,
\t \t \t "min": 135,
\t \t \t "minutes": 0,
\t \t \t "name": "Cardio"
\t \t }, {
\t \t \t "caloriesOut": 0,
\t \t \t "max": 220,
\t \t \t "min": 164,
\t \t \t "minutes": 0,
\t \t \t "name": "Peak"
\t \t }],
\t \t "value": "58.62"
\t }],
\t "activities-heart-intraday": {
\t \t "dataset": [{
\t \t \t "time": "10:13:46",
\t \t \t "value": 65
\t \t }, {
\t \t \t "time": "10:21:13",
\t \t \t "value": 70
\t \t }, {
\t \t \t "time": "10:21:28",
\t \t \t "value": 70
\t \t }, {
\t \t \t "time": "10:21:33",
\t \t \t "value": 80
\t \t }, {
\t \t \t "time": "10:21:38",
\t \t \t "value": 79
\t \t }, {
\t \t \t "time": "10:21:43",
\t \t \t "value": 76
\t \t }, {
\t \t \t "time": "10:21:48",
\t \t \t "value": 73
\t \t }, {
\t \t \t "time": "10:21:53",
\t \t \t "value": 73
\t \t }, {
\t \t \t "time": "10:22:03",
\t \t \t "value": 67
\t \t }, {
\t \t \t "time": "10:22:08",
\t \t \t "value": 63
\t \t }, {
\t \t \t "time": "10:22:13",
\t \t \t "value": 59
\t \t }, {
\t \t \t "time": "10:22:23",
\t \t \t "value": 60
\t \t }, {
\t \t \t "time": "10:22:33",
\t \t \t "value": 61
\t \t }, {
\t \t \t "time": "10:22:43",
\t \t \t "value": 61
\t \t }, {
\t \t \t "time": "10:22:53",
\t \t \t "value": 62
\t \t }, {
\t \t \t "time": "10:23:03",
\t \t \t "value": 61
\t \t }, {
\t \t \t "time": "10:23:08",
\t \t \t "value": 62
\t \t }, {
\t \t \t "time": "10:23:13",
\t \t \t "value": 60
\t \t }, {
\t \t \t "time": "10:23:18",
\t \t \t "value": 60
\t \t }, {
\t \t \t "time": "10:23:23",
\t \t \t "value": 60
\t \t }, {
\t \t \t "time": "10:23:28",
\t \t \t "value": 59
\t \t }, {
\t \t \t "time": "10:23:33",
\t \t \t "value": 59
\t \t }, {
\t \t \t "time": "10:23:43",
\t \t \t "value": 60
\t \t }, {
\t \t \t "time": "10:23:58",
\t \t \t "value": 60
\t \t }, {
\t \t \t "time": "10:24:13",
\t \t \t "value": 60
\t \t }, {
\t \t \t "time": "10:24:23",
\t \t \t "value": 61
\t \t }, {
\t \t \t "time": "10:24:28",
\t \t \t "value": 59
\t \t }, {
\t \t \t "time": "10:24:33",
\t \t \t "value": 56
\t \t }, {
\t \t \t "time": "10:24:48",
\t \t \t "value": 56
\t \t }, {
\t \t \t "time": "10:24:53",
\t \t \t "value": 55
\t \t }, {
\t \t \t "time": "10:24:58",
\t \t \t "value": 56
\t \t }, {
\t \t \t "time": "10:25:13",
\t \t \t "value": 56
\t \t }, {
\t \t \t "time": "10:25:28",
\t \t \t "value": 55
\t \t }, {
\t \t \t "time": "10:25:33",
\t \t \t "value": 56
\t \t }, {
\t \t \t "time": "10:25:48",
\t \t \t "value": 56
\t \t }, {
\t \t \t "time": "10:25:58",
\t \t \t "value": 56
\t \t }, {
\t \t \t "time": "10:26:08",
\t \t \t "value": 57
\t \t }, {
\t \t \t "time": "10:26:18",
\t \t \t "value": 56
\t \t }, {
\t \t \t "time": "10:26:28",
\t \t \t "value": 56
\t \t }, {
\t \t \t "time": "10:26:43",
\t \t \t "value": 55
\t \t }, {
\t \t \t "time": "10:26:58",
\t \t \t "value": 54
\t \t }, {
\t \t \t "time": "10:27:13",
\t \t \t "value": 54
\t \t }, {
\t \t \t "time": "10:27:18",
\t \t \t "value": 54
\t \t }, {
\t \t \t "time": "10:27:28",
\t \t \t "value": 54
\t \t }, {
\t \t \t "time": "10:27:43",
\t \t \t "value": 53
\t \t }, {
\t \t \t "time": "10:27:58",
\t \t \t "value": 53
\t \t }, {
\t \t \t "time": "10:28:03",
\t \t \t "value": 54
\t \t }, {
\t \t \t "time": "10:28:18",
\t \t \t "value": 54
\t \t }, {
\t \t \t "time": "10:28:33",
\t \t \t "value": 53
\t \t }, {
\t \t \t "time": "10:28:48",
\t \t \t "value": 53
\t \t }, {
\t \t \t "time": "10:29:03",
\t \t \t "value": 53
\t \t }, {
\t \t \t "time": "10:29:08",
\t \t \t "value": 54
\t \t }, {
\t \t \t "time": "10:29:13",
\t \t \t "value": 53
\t \t }, {
\t \t \t "time": "10:29:18",
\t \t \t "value": 55
\t \t }, {
\t \t \t "time": "10:29:23",
\t \t \t "value": 57
\t \t }, {
\t \t \t "time": "10:29:38",
\t \t \t "value": 57
\t \t }, {
\t \t \t "time": "10:29:43",
\t \t \t "value": 56
\t \t }, {
\t \t \t "time": "10:29:53",
\t \t \t "value": 56
\t \t }, {
\t \t \t "time": "10:30:08",
\t \t \t "value": 56
\t \t }, {
\t \t \t "time": "10:30:13",
\t \t \t "value": 56
\t \t }, {
\t \t \t "time": "10:30:28",
\t \t \t "value": 55
\t \t }, {
\t \t \t "time": "10:30:43",
\t \t \t "value": 55
\t \t }, {
\t \t \t "time": "10:30:58",
\t \t \t "value": 55
\t \t }, {
\t \t \t "time": "10:31:13",
\t \t \t "value": 55
\t \t }, {
\t \t \t "time": "10:31:18",
\t \t \t "value": 54
\t \t }, {
\t \t \t "time": "10:31:33",
\t \t \t "value": 54
\t \t }, {
\t \t \t "time": "10:31:48",
\t \t \t "value": 54
\t \t }, {
\t \t \t "time": "10:32:03",
\t \t \t "value": 54
\t \t }, {
\t \t \t "time": "10:32:13",
\t \t \t "value": 56
\t \t }, {
\t \t \t "time": "10:32:28",
\t \t \t "value": 55
\t \t }, {
\t \t \t "time": "10:32:33",
\t \t \t "value": 55
\t \t }, {
\t \t \t "time": "10:32:38",
\t \t \t "value": 55
\t \t }, {
\t \t \t "time": "10:32:53",
\t \t \t "value": 56
\t \t }, {
\t \t \t "time": "10:33:08",
\t \t \t "value": 56
\t \t }, {
\t \t \t "time": "10:33:13",
\t \t \t "value": 61
\t \t }, {
\t \t \t "time": "10:33:23",
\t \t \t "value": 60
\t \t }, {
\t \t \t "time": "10:33:33",
\t \t \t "value": 61
\t \t }, {
\t \t \t "time": "10:33:48",
\t \t \t "value": 61
\t \t }, {
\t \t \t "time": "10:34:03",
\t \t \t "value": 61
\t \t }, {
\t \t \t "time": "10:34:08",
\t \t \t "value": 60
\t \t }, {
\t \t \t "time": "10:34:23",
\t \t \t "value": 60
\t \t }],
\t \t "datasetInterval": 1,
\t \t "datasetType": "second"
\t }
}Dank gibt für die Unterstützung!
'toPromise' erfordert nicht' subscribe'. –