此自动生成的服务(由NSwagStudio)需要API_BASE_URL(InjectionToken)值才能执行http请求 如何以及在哪里注射它?
/* tslint:disable */
//----------------------
// <auto-generated>
// Generated using the NSwag toolchain v11.12.16.0 (NJsonSchema v9.10.19.0 (Newtonsoft.Json v9.0.0.0)) (http://NSwag.org)
// </auto-generated>
//----------------------
// ReSharper disable InconsistentNaming
import 'rxjs/add/observable/fromPromise';
import 'rxjs/add/observable/of';
import 'rxjs/add/observable/throw';
import 'rxjs/add/operator/map';
import 'rxjs/add/operator/toPromise';
import 'rxjs/add/operator/mergeMap';
import 'rxjs/add/operator/catch';
import { Observable } from 'rxjs/Observable';
import { Injectable, Inject, Optional, InjectionToken } from '@angular/core';
import { HttpClient, HttpHeaders, HttpParams, HttpResponse, HttpResponseBase, HttpErrorResponse } from '@angular/common/http';
export const API_BASE_URL = new InjectionToken<string>('API_BASE_URL');
@Injectable()
export class DocumentService {
private http: HttpClient;
private baseUrl: string;
protected jsonParseReviver: ((key: string, value: any) => any) | undefined = undefined;
constructor(@Inject(HttpClient) http: HttpClient, @Optional() @Inject(API_BASE_URL) baseUrl?: string) {
this.http = http;
this.baseUrl = baseUrl ? baseUrl : "";
}
getAll(): Observable<string[] | null> {
let url_ = this.baseUrl + "/api/Document";
url_ = url_.replace(/[?&]$/, "");
let options_ : any = {
observe: "response",
responseType: "blob",
headers: new HttpHeaders({
"Content-Type": "application/json",
"Accept": "application/json"
})
};
return this.http.request("get", url_, options_).flatMap((response_ : any) => {
return this.processGetAll(response_);
}).catch((response_: any) => {
if (response_ instanceof HttpResponseBase) {
try {
return this.processGetAll(<any>response_);
} catch (e) {
return <Observable<string[] | null>><any>Observable.throw(e);
}
} else
return <Observable<string[] | null>><any>Observable.throw(response_);
});
}
protected processGetAll(response: HttpResponseBase): Observable<string[] | null> {
...........code
........
....
}
}
有人可以给我一些关于InjectioToken如何工作以及如何将其注入此服务的超快速提示吗?
Angular5 - Nswag
答案 0 :(得分:7)
在父模块上,为API_BASE_URL创建一个提供程序
export function getBaseUrl(): string {
return AppConsts.baseUrl;
}
@NgModule({
declarations: [AppComponent],
imports: [BrowserModule],
providers: [{ provide: API_BASE_URL, useFactory: getBaseUrl }],
bootstrap: [AppComponent]
})
export class AppModule {}
,然后定义具有此类静态属性的AppConsts类
export class AppConsts {
static baseUrl = "your_api_base_url";
}
为我工作,希望对您有所帮助。该解决方案基于aspnet样例项目,对我而言,该项目提供了最佳的体系结构标准。 我将angular project的网址和此specific code的网址留在这里。
答案 1 :(得分:6)
如上所述,最好将其放在您的环境设置中,然后Angular会根据您所处的环境替换相应的基本url,例如在开发中:
export const environment = {
production: false,
apiRoot: "https://localhost:1234",
};
然后,您可以在提供程序中使用useValue(为简单起见,其他所有内容都已删除):
...
import { environment } from '@env/environment';
@NgModule({
imports: [ ... ],
declarations: [ ... ],
providers: [
{
provide: API_BASE_URL,
useValue: environment.apiRoot
},
...
]
exports: [ ... ]
})
export class AppModule {}
要使用上述的@env别名,您需要对tsconfig.json进行如下添加:
{
...
"compilerOptions": {
"baseUrl": "src",
"paths": {
"@env/*": [ "environments/*" ]
},
etc...
}
然后Angular将根据所使用的--- env标志替换相应的环境设置。
答案 2 :(得分:1)
将所有常量放在environment.ts和environment.prod.ts中的最佳做法。只需创建一个新属性并导入您的服务。您的代码将如下所示:
// environment.ts
export const environment = {
production: false,
API_BASE_URL: "baseUrlOfApiForDevelopment",
};
// environment.prod.ts
export const environment = {
production: false,
API_BASE_URL: "baseUrlOfApiForProduction",
};
现在您需要导入服务才能使用它。