Question

我在Angular 4中有以下代码：

constructor(private baseUrl: string, private http: Http) {}

get(url: string, config?: RequestOptionsArgs): Promise<any> {
    return this.http.get(this.prependBaseUrl(url), config)
        .toPromise();
}

我想将其重写为HttpClient而不是Http，所以我修改了向构造函数注入的http类型，但我不知道（并且在任何地方都找不到）与config?: RequestOptionsArgs的关系。

感谢帮助

Answer 1

尝试基本方法：

导入HttpClientModule并将其添加到imports[]中的app.module.ts中

import { HttpClientModule } from '@angular/common/http';

@NgModule({
  imports: [
    BrowserModule,
    // import HttpClientModule after BrowserModule.
    HttpClientModule,
  ],
  declarations: [
    AppComponent,
  ],
  bootstrap: [ AppComponent ]
})
export class AppModule {}

app.service.ts

将HttpClient导入组件

import { HttpClient } from '@angular/common/http';
import { Injectable } from '@angular/core';

@Injectable()
export class AppService{
  constructor(private http: HttpClient) { }
getData(): Observable<any>{

    return this.httpClient.get('request_url',RequestOptionsArgs)
    }
}

app.component.ts：

import {AppService} from './app.service.ts';

constructor(private appservice: AppService){
  this.appservice.getData().subscribe(response => {
  console.log(response)
})

Angular 4：将Http转换为HttpClient，配置

1 个答案: