Aurelia-在Aurelia Fetch Client中設置標題

Question

我正在使用aurelia-http-client並且努力使用攔截器並為我的請求設置標頭。

我需要實現的是；

• 每個攔截器（請求，請求錯誤，響應和響應錯誤）在觸發時都會使用aurelia-event-aggregator發出一個事件。
• 標頭會添加到每個請求，其中包含在頁面上輸入的信息

我有攔截正常出版活動的唯一方法就是使用aurelia.container在像下面main.js;

import {HttpClient} from 'aurelia-http-client';
import {EventAggregator} from 'aurelia-event-aggregator';

export function configure(aurelia) {
  const container = aurelia.container;

  const httpClient = container.get(HttpClient);
  const ea = container.get(EventAggregator);

  httpClient.configure(config => {
    config.withInterceptor({
      request(request) {
        ea.publish('http-request', request);
        return request;
      },
      requestError(error) {
        ea.publish('http-request-error', error);
       throw error;
      },
      response(response) {
        ea.publish('http-response', response);
        return response;
      },
      responseError(error) {
        ea.publish('http-response-error', error);
        throw error;
      }
    });
  });

  aurelia.use
    .standardConfiguration()
    .developmentLogging()
    .singleton(HttpClient, httpClient);


  aurelia.start().then(() => aurelia.setRoot());
}

因為必須在應用初始化后設置我的請求的標頭-我無法像大多數在線教程一樣在上述配置中完成標頭。

相反，它需要設置如下；

import {inject} from "aurelia-framework";
import {HttpClient} from "aurelia-http-client";
import {EventAggregator} from "aurelia-event-aggregator";

@inject(HttpClient, EventAggregator)
export class Dashboard {

  requestMethod = "GET";

  constructor(HttpClient, EventAggregator) {
    this.http = HttpClient;
    this.ea = EventAggregator;
  }

  triggerGet() {
    // HEADER NEEDS TO BE SET HERE USING THIS.FOO
    this.http.get(this.url).then(response => {
      console.log("GET Response", response);
    });
  }
}

我嘗試過

this.http.configure((configure) => {
  if(this.username && this.password) {
    configure.withDefaults({
      headers: {
        'Authorization': 'Basic ' + btoa(this.username + ":" + this.password)
      }
    });
  }
})

但是我什么都無法更改需要的標頭，並保持我在main.js中設置的配置

Answer 1

嘗試創建一個實際的標頭對象，如下所示：

this.http.configure((configure) => {
  if(this.username && this.password) {
    configure.withDefaults({
        headers: new Headers({
          'Authorization': 'Basic ' + btoa(this.username + ":" + this.password)
        })
    });
  }
})

Answer 2

Fabio Luiz在評論中為我提供了一個可行的解決方案。 我不認為這不是理想的方法，但是可以。

實際上，我已經創建了一個AppState類，該類用於將用戶名/密碼傳遞給攔截器。

export class AppState { 

  properties = {};

  clear() {
    this.properties = {};
  }

  set(key, value) {
    this.properties[key] = value;
  }

  get(key) {
    if(this.properties[key]) {
      return this.properties[key];
    } else {
      return false;
    }
  }
}

它雖然很粗糙並且已經准備就緒，但是僅用於測試應用程序，因此我對此感到滿意。

這是它的用途；

import {inject} from "aurelia-framework";
import {HttpClient} from "aurelia-http-client";
import {EventAggregator} from "aurelia-event-aggregator";
import {AppState} from "services/appState";

@inject(HttpClient, EventAggregator, AppState)
export class Dashboard {

    constructor(HttpClient, EventAggregator, AppState) {
        this.http = HttpClient;
        this.ea = EventAggregator;
        this.appState = AppState;

        // Create listeners
    }

    run() {
        if(this.username && this.password) {
            this.appState.set('authenticate', true);
            this.appState.set('username', this.username);
            this.appState.set('password', this.password);
        }

        // Trigger HTTP Requests
    }
}

然后是我的main.js文件；

import {HttpClient} from 'aurelia-http-client';
import {EventAggregator} from 'aurelia-event-aggregator';
import {AppState} from 'services/appState';

export function configure(aurelia) {
    const container = aurelia.container;
    const httpClient = container.get(HttpClient);
    const ea = container.get(EventAggregator);
    const appState = container.get(AppState);

    httpClient.configure(config => {
        config.withInterceptor({
            request(request) {
                if(appState.get('authenticate')) {
                    let username = appState.get('username');
                    let password = appState.get('password');
                    request.headers.add("Authorization", "Basic " + btoa(username + ":" + password));
                }
                ea.publish('http-request', request);
                return request;
            },
            requestError(error) {
                ea.publish('http-request-error', error);
                throw error;
            },
            response(response) {
                ea.publish('http-response', response);
                return response;
            },
            responseError(error) {
                ea.publish('http-response-error', error);
                throw error;
            }
        });
    });

    aurelia.use
        .standardConfiguration()
        .developmentLogging()
        .singleton(HttpClient, httpClient);


      aurelia.start().then(() => aurelia.setRoot());
}