Angular 2を使用してカスタムHTTPヘッダーを追加または作成する方法を知っている人はいますか？ http depencyとどのように我々はjqueryの中であなたがHTTPメソッドの残りの部分とヘッダーを使用することができます。もちろん、HTTP角2？
$.ajax({
url: 'foo/bar',
headers: { 'x-my-custom-header': 'some value' }
});
let headers = new Headers();
headers.append('x-my-custom-header', 'some value');
http.get('foo/bar', { headers: headers });
を使用してヘッダーを使用する方法を注入する方法を 。
Angular2のHTTPサポートを使用するには、いくつかのステップがあります。
はSystemJS設定でHTTPモジュールを指定します。
アプリケーションをブートストラップするときHTTP_PROVIDERSプロバイダを設定しSystem.config({
(...)
map: {
app: "./src",
'@angular': 'https://npmcdn.com/@angular',
'rxjs': 'https://npmcdn.com/[email protected]'
},
packages: {
app: {
main: './main.ts',
defaultExtension: 'js'
},
'@angular/core': {
main: 'core.umd.js',
defaultExtension: 'js'
},
(...)
'@angular/http': {
main: 'http.umd.js',
defaultExtension: 'js'
},
rxjs: {
defaultExtension: 'js'
}
}
});
：
bootstrap(AppComponent, [ HTTP_PROVIDERS ]);
nはあなたがHTTPリクエストを実行するHttpクラスのインスタンス：
import {Http} from '@angular/http';
@Component({
(...)
})
// It can also be @Injectable() in the case of a service
export class SomeComponent {
constructor(private http:Http) {
}
}
は、要求を実行するHTTPインスタンスを使用します。
import {Http, Headers} from '@angular/http';
@Component({
(...)
})
// It can also be @Injectable() in the case of a service
export class SomeComponent {
(...)
executeRequest() {
let headers = new Headers();
headers.append('x-my-custom-header', 'some value');
this.http.get('foo/bar', { headers });
}
は応答を得るために要求応答で購読
executeRequest() {
let headers = new Headers();
headers.append('x-my-custom-header', 'some value');
this.http.get('foo/bar', { headers }).map(res => res.json())
.subscribe((data) => {
this.data = data;
});
}
この手順を忘れないでください。オブザーバブルが怠けているためです。だから、彼らに契約をしなくても、要求は
に実行されることはありません私はあなたがこのようなあなたのRESTエンドポイントを定義し、独自のサービスでHTTPサービスをラップ提案します：
import { Injectable, } from '@angular/core';
import { Observable } from 'rxjs/Observable';
import 'rxjs/add/operator/toPromise';
import 'rxjs/add/operator/map';
import 'rxjs/add/operator/catch';
import { Headers, Http, Response, RequestOptionsArgs } from '@angular/http';
@Injectable()
export class RestService {
constructor(private http: Http) {}
get<T>(url: string): Observable<T> {
var options = {} as RequestOptionsArgs;
options.headers = this.prepareRequestHeaders();
return this.http.get(url, options)
.map(this.extractData)
.catch(this.handleError);
}
post<T>(url: string, data: any): Observable<T> {
var options = {} as RequestOptionsArgs;
options.headers = this.prepareRequestHeaders();
return this.http.post(url, data, options)
.map(this.extractData)
.catch(this.handleError);
}
put<T>(url: string, data: any): Observable<T> {
var options = {} as RequestOptionsArgs;
options.headers = this.prepareRequestHeaders();
return this.http.put(url, data, options)
.map(this.extractData)
.catch(this.handleError);
}
patch<T>(url: string, data: any): Observable<T> {
var options = {} as RequestOptionsArgs;
options.headers = this.prepareRequestHeaders();
return this.http.patch(url, data, options)
.map(this.extractData)
.catch(this.handleError);
}
delete<T>(url: string): Observable<T> {
var options = {} as RequestOptionsArgs;
options.headers = this.prepareRequestHeaders();
return this.http.delete(url, options)
.map(this.extractData)
.catch(this.handleError);
}
private extractData<T>(response: Response) {
var resp: T;
try {
resp = response.json() as T;
} catch (error) {
}
return resp;
}
private prepareRequestHeaders() {
var headers = new Headers();
headers.append('x-my-custom-header', 'some value');
headers.append('Content-Type', 'application/json');
// etc
return headers;
}
private handleResponse<T>(response: any): T[] {
var resp: T[];
try {
resp = response.json().data as T[];
} catch (error) {
}
return resp;
}
private handleError(error: any): Promise<any> {
return Promise.reject(error.message || error);
}
}
かもし約束を好む：
import { Injectable, } from '@angular/core';
import 'rxjs/add/operator/toPromise';
import 'rxjs/add/operator/map';
import 'rxjs/add/operator/catch';
import { Headers, Http, Response, RequestOptionsArgs } from '@angular/http';
@Injectable()
export class RestService {
constructor(private http: Http) {}
get<T>(url: string): Promise<T> {
var options = {} as RequestOptionsArgs;
options.headers = this.prepareRequestHeaders();
return this.http.get(url, options)
.map(this.extractData)
.catch(this.handleError).toPromise();
}
post<T>(url: string, data: any):Promise<T> {
var options = {} as RequestOptionsArgs;
options.headers = this.prepareRequestHeaders();
return this.http.post(url, data, options)
.map(this.extractData)
.catch(this.handleError).toPromise();
}
put<T>(url: string, data: any):Promise<T> {
var options = {} as RequestOptionsArgs;
options.headers = this.prepareRequestHeaders();
return this.http.put(url, data, options)
.map(this.extractData)
.catch(this.handleError).toPromise();
}
patch<T>(url: string, data: any):Promise<T> {
var options = {} as RequestOptionsArgs;
options.headers = this.prepareRequestHeaders();
return this.http.patch(url, data, options)
.map(this.extractData)
.catch(this.handleError).toPromise();
}
delete<T>(url: string):Promise<T> {
var options = {} as RequestOptionsArgs;
options.headers = this.prepareRequestHeaders();
return this.http.delete(url, options)
.map(this.extractData)
.catch(this.handleError).toPromise();
}
private extractData<T>(response: Response) {
var resp: T;
try {
resp = response.json() as T;
} catch (error) {
}
return resp;
}
private prepareRequestHeaders() {
var headers = new Headers();
headers.append('x-my-custom-header', 'some value');
headers.append('Content-Type', 'application/json');
// etc
return headers;
}
private handleResponse<T>(response: any): T[] {
var resp: T[];
try {
resp = response.json().data as T[];
} catch (error) {
}
return resp;
}
private handleError(error: any): Promise<any> {
return Promise.reject(error.message || error);
}
}