要解决"Angular 6使用Http拦截器与配置服务"的问题,你可以按照以下步骤进行:
在你的Angular项目中创建一个新的服务,比如说叫做"InterceptorService",用于创建Http拦截器和配置服务。
在"InterceptorService"中导入所需的依赖项,包括HttpClient、HttpHandler和HttpInterceptor。
import { Injectable } from '@angular/core';
import { HttpClient, HttpHandler, HttpInterceptor, HttpRequest, HttpResponse } from '@angular/common/http';
@Injectable()
export class ConfigInterceptor implements HttpInterceptor {
constructor(private configService: ConfigService) {}
intercept(req: HttpRequest, next: HttpHandler) {
// 在发送请求之前进行一些处理(比如添加请求头)
const modifiedReq = req.clone({
headers: req.headers.set('Authorization', 'Bearer ' + this.configService.getToken())
});
// 继续发送修改后的请求
return next.handle(modifiedReq);
}
}
@Injectable()
export class InterceptorService {
constructor(private httpClient: HttpClient) {}
getInterceptor() {
const configInterceptor = new ConfigInterceptor(this.configService);
return this.httpClient.intercept(configInterceptor);
}
}
@NgModule({
imports: [...],
declarations: [...],
providers: [InterceptorService],
bootstrap: [AppComponent]
})
export class AppModule { }
import { Component } from '@angular/core';
import { HttpClient } from '@angular/common/http';
@Component({
selector: 'app-example',
templateUrl: './example.component.html',
styleUrls: ['./example.component.css']
})
export class ExampleComponent {
constructor(private httpClient: HttpClient) {}
makeRequest() {
this.httpClient.get('https://api.example.com/data').subscribe((response) => {
console.log(response);
});
}
}
通过以上步骤,你可以使用Http拦截器和配置服务在Angular 6中发送HTTP请求,并在请求发送前进行一些处理(比如添加请求头)。