Angular 7.2 在 IE 11 上未构建 HTTP GET 参数

Question

我在 Angular 7.2.0 应用程序的 HTTP get 请求中使用 HttpParams。在我使用 "ng build --extract-css --aot" 命令构建项目，运行应用程序并在控制台上记录 HttpParams 值后，我可以在控制台上看到参数值，但它没有反映在 http 请求中网络选项卡。请就此提出建议。

此解决方案在 Chrome 中运行良好，我仅在使用 IE 时遇到此问题。

我尝试了使用和不使用 "application/json" headers 的相同方法，但没有区别。

我在启用所有 polyfill 的情况下尝试了这个，它也没有解决问题。

analytics.service.ts

import { ErrorsService } from 'src/app/shared/services/errors.service';
import { Observable } from 'rxjs';
import { Activity } from 'src/app/models/Activity';
import { HttpParams, HttpClient, HttpHeaders } from '@angular/common/http';
import { catchError } from 'rxjs/operators';


@Injectable()
export class AnalyticsService {
  routePrefix = 'api/analytics';

  constructor(private http: HttpClient, private errorsService: ErrorsService) { }

  public getSessionActivities(duration): Observable<Activity[]> {
    let headers = new HttpHeaders();
    headers.append('Content-Type', 'application/json');

    const requestParams = new HttpParams().set('duration', duration);
    console.log("---Get Session Activities---", requestParams);

    return this.http.get<Activity[]>(this.routePrefix, { headers: headers, params: requestParams }).pipe(
      catchError(err => this.errorsService.handleError(err))
    );
  }
}
import { Injectable } from '@angular/core';
import { ErrorsService } from 'src/app/shared/services/errors.service';
import { Observable } from 'rxjs';
import { Activity } from 'src/app/models/Activity';
import { HttpParams, HttpClient, HttpHeaders } from '@angular/common/http';
import { catchError } from 'rxjs/operators';


@Injectable()
export class AnalyticsService {
  routePrefix = 'api/analytics';

  constructor(private http: HttpClient, private errorsService: ErrorsService) { }

  public getSessionActivities(duration): Observable<Activity[]> {
    let headers = new HttpHeaders();
    headers.append('Content-Type', 'application/json');

    const requestParams = new HttpParams().set('duration', duration);
    console.log("---Get Session Activities---", requestParams);

    return this.http.get<Activity[]>(this.routePrefix, { headers: headers, params: requestParams }).pipe(
      catchError(err => this.errorsService.handleError(err))
    );
  }
}

.NET核心后端

IE 网络选项卡

IE 控制台

Chrome 网络选项卡

Angular版本

IE版本

Answer 1

我能够通过添加一些默认情况下未添加到 polyfills.ts 的额外 polyfill 来解决此问题。应归功于 'core-js/es7/reflect'。请参阅下面polyfills.ts的完整内容。

 * This file includes polyfills needed by Angular and is loaded before the app.
 * You can add your own extra polyfills to this file.
 *
 * This file is divided into 2 sections:
 *   1. Browser polyfills. These are applied before loading ZoneJS and are sorted by browsers.
 *   2. Application imports. Files imported after ZoneJS that should be loaded before your main
 *      file.
 *
 * The current setup is for so-called "evergreen" browsers; the last versions of browsers that
 * automatically update themselves. This includes Safari >= 10, Chrome >= 55 (including Opera),
 * Edge >= 13 on the desktop, and iOS 10 and Chrome on mobile.
 *
 * Learn more in https://angular.io/docs/ts/latest/guide/browser-support.html
 */

/***************************************************************************************************
 * BROWSER POLYFILLS
 */

/** IE9, IE10 and IE11 requires all of the following polyfills. **/
 import 'core-js/es6/symbol';
 import 'core-js/es6/object';
 import 'core-js/es6/function';
 import 'core-js/es6/parse-int';
 import 'core-js/es6/parse-float';
 import 'core-js/es6/number';
 import 'core-js/es6/math';
 import 'core-js/es6/string';
 import 'core-js/es6/date';
 import 'core-js/es6/array';
 import 'core-js/es6/regexp';
 import 'core-js/es6/map';
 import 'core-js/es6/weak-map';
 import 'core-js/es6/set';

/** IE10 and IE11 requires the following for NgClass support on SVG elements */
 import 'classlist.js';  // Run `npm install --save classlist.js`.

/** IE10 and IE11 requires the following for the Reflect API. */
 import 'core-js/es6/reflect';


/** Evergreen browsers require these. **/
// Used for reflect-metadata in JIT. If you use AOT (and only Angular decorators), you can remove.
import 'core-js/es7/reflect';


/**
 * Web Animations `@angular/platform-browser/animations`
 * Only required if AnimationBuilder is used within the application and using IE/Edge or Safari.
 * Standard animation support in Angular DOES NOT require any polyfills (as of Angular 6.0).
 **/
// import 'web-animations-js';  // Run `npm install --save web-animations-js`.

/**
 * By default, zone.js will patch all possible macroTask and DomEvents
 * user can disable parts of macroTask/DomEvents patch by setting following flags
 */

 // (window as any).__Zone_disable_requestAnimationFrame = true; // disable patch requestAnimationFrame
 // (window as any).__Zone_disable_on_property = true; // disable patch onProperty such as onclick
 // (window as any).__zone_symbol__BLACK_LISTED_EVENTS = ['scroll', 'mousemove']; // disable patch specified eventNames

 /*
 * in IE/Edge developer tools, the addEventListener will also be wrapped by zone.js
 * with the following flag, it will bypass `zone.js` patch for IE/Edge
 */
// (window as any).__Zone_enable_cross_context_check = true;

/***************************************************************************************************
 * Zone JS is required by default for Angular itself.
 */
import 'zone.js/dist/zone';  // Included with Angular CLI.



/***************************************************************************************************
 * APPLICATION IMPORTS
 */

谢谢。

Angular 7.2 在 IE 11 上未构建 HTTP GET 参数

HTTP GET Parameters not getting constructed by Angular 7.2 on IE 11

javascript

angular

internet-explorer-11

http-get

http-parameters