浏览器文件下载进度: Angular 5

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

@NgModule({
  imports: [
    HttpClientModule
  ],
  ...
})
export class AppModule { }

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

export class DownloadComponent {
  constructor(private http: HttpClient) { }

  downloadFile() {
    const url = 'http://example.com/file.pdf'; // 替换为实际文件的URL
    this.http.get(url, { responseType: 'blob' }).subscribe(response => {
      // 下载完成后的处理逻辑
    });
  }
}

import { HttpClient, HttpEventType } from '@angular/common/http';

export class DownloadComponent {
  constructor(private http: HttpClient) { }

  downloadFile() {
    const url = 'http://example.com/file.pdf'; // 替换为实际文件的URL
    this.http.get(url, { responseType: 'blob', observe: 'events' }).subscribe(event => {
      if (event.type === HttpEventType.DownloadProgress) {
        const progress = Math.round(100 * event.loaded / event.total); // 计算下载进度
        console.log(`Download progress: ${progress}%`);
      } else if (event.type === HttpEventType.Response) {
        // 下载完成后的处理逻辑
      }
    });
  }
}