javascript Angular 2 - 如何在我的标头中编写 Http get 承诺？
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/33648982/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
Angular 2 - How do I write a Http get promise in my header?
提问by AngularM
Angular 2 - How do I write a Http get promise?
Angular 2 - 如何编写 Http get 承诺？
I'm importing http and want to set the http header with my auth token. Then I want to write a http get and put the response into a promise to return to the method that calls it.
我正在导入 http 并想使用我的身份验证令牌设置 http 标头。然后我想写一个 http get 并将响应放入一个承诺中，以返回调用它的方法。
So far I have this:
到目前为止，我有这个：
import {Http, Headers} from "angular2/http";
import {EnvironmentService} from './environmentService';
export class AuthService {
private environmentService: EnvironmentService;
private http: Http;
private header: Headers;
contructor(_environmentService: EnvironmentService, _http: Http, _header: Headers){
this.environmentService = _environmentService;
this.http = _http;
this.header.append('Authorization', '1234');
this.header.append('Content-Type', 'application/json');
}
getSpotifyData = ():Promise<Object> => {
return this.http
.get('http://ws.spotify.com/search/1/track.json?q=foo', {headers:this.header})
.map((response) => {
return response.json()
})
.toPromise();
}
}
Thanks in advance!
提前致谢！
回答by alexpods
You can pass headersinto the second argument of http.getmethod and you can use .toPromisemethod to convert an Observableinto a Promise.
您可以传入methodheaders的第二个参数，http.get并且可以使用.toPromisemethod 将 an 转换Observable为 a Promise。
export class AuthService {
// ...
testApiCall(): any {
return this.http
.get('http://localhost:3333/api/', {
headers: {
'Authorization': 'BearerTokenGoesHear'
}
})
.map((response) => {
// some response manipulation
return response.json()
})
.toPromise();
}
}
Take a look at this example.
看看这个例子。
