Angular正在阻止文件下载

import { Injectable } from '@angular/core';
import { HttpInterceptor, HttpRequest, HttpHandler, HttpEvent } from '@angular/common/http';
import { Observable } from 'rxjs';

@Injectable()
export class FileDownloadInterceptor implements HttpInterceptor {
  intercept(request: HttpRequest<any>, next: HttpHandler): Observable<HttpEvent<any>> {
    return next.handle(request).pipe(
      tap(event => {
        if (event instanceof HttpResponse) {
          const contentType = event.headers.get('content-type');
          if (contentType && contentType.startsWith('application/pdf')) {
            // 阻止文件下载，执行自定义操作
            // 例如，显示文件内容在页面上
          }
        }
      })
    );
  }
}

import { NgModule } from '@angular/core';
import { HttpClientModule, HTTP_INTERCEPTORS } from '@angular/common/http';

import { FileDownloadInterceptor } from './file-download.interceptor';

@NgModule({
  imports: [HttpClientModule],
  providers: [
    {
      provide: HTTP_INTERCEPTORS,
      useClass: FileDownloadInterceptor,
      multi: true
    }
  ]
})
export class AppModule { }