如何在IONIC 3中导入文件？

npm install -g ionic

ionic start myApp blank

cd myApp

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

...

@NgModule({
  declarations: [
    ...
  ],
  imports: [
    BrowserModule,
    IonicModule.forRoot(),
    HttpClientModule, // 添加此行
  ],
  ...
})
export class AppModule { }

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

@Injectable({
  providedIn: 'root'
})
export class FileService {

  constructor(private http: HttpClient) { }

  importFile(fileUrl: string) {
    return this.http.get(fileUrl, { responseType: 'text' });
  }
}

import { Component } from '@angular/core';
import { FileService } from '../file.service';

@Component({
  selector: 'app-home',
  templateUrl: 'home.page.html',
  styleUrls: ['home.page.scss'],
})
export class HomePage {

  constructor(private fileService: FileService) { }

  importFile() {
    const fileUrl = 'https://example.com/file.csv'; // 替换为你要导入的文件URL
    this.fileService.importFile(fileUrl)
      .subscribe(data => {
        // 在这里处理导入的文件数据
        console.log(data);
      });
  }

}