Angular 2上传多个文件 [英] Angular 2 upload multiple files

问题描述

我试图上传多个文件(PDF或各种图像格式).现在上传单个文件有效，但多个文件无效.

I trying to upload multiple files (PDFs or various image formats). Right now uploading a single file works, but multiple does not.

这是代码:

HTML:

<div>
    <label> Upload PDF(s) or Images (PNG/JPG/DICOM/DCM):</label>
    <div class="ctrl">
        <div class="icon">
            <i class="fa fa-file-image-o"></i>
        </div>
        <input type="file" (change)="onChange($event)"/>
        <md-input class="ctrl" [(ngModel)]="fileName"></md-input>
    </div>
</div>

脚本:

onChange(event: any) {
    this.fileName = event.srcElement.files[0].name;
}

帮我如何上传多个文件.

Help me how to do multiple files upload.

推荐答案

在输入的内容中添加multiple属性:

Add the multiple attribute to you input:

<input type="file" (change)="onChange($event)" multiple />

要显示输入中的所有文件名，请像下面的代码一样进行操作: https://plnkr.co/edit/WvkNbwXpAkD14r417cYM?p=preview

And to show all file names in your input, do it like in this plunker: https://plnkr.co/edit/WvkNbwXpAkD14r417cYM?p=preview

import {Component, NgModule} from '@angular/core'
import {BrowserModule} from '@angular/platform-browser'

@Component({
  selector: 'my-app',
  template: `
    <div>
      <h2>Hello {{name}}</h2>
      <input type="file" multiple (change)="onChange($event, showFileNames)" />
      <input #showFileNames />
    </div>
  `,
})
export class App {
  constructor() {
    this.name = 'Angular2'
  }

  onChange(event: any, input: any) {
    let files = [].slice.call(event.target.files);

    input.value = files.map(f => f.name).join(', ');
  }
}

@NgModule({
  imports: [ BrowserModule ],
  declarations: [ App ],
  bootstrap: [ App ]
})
export class AppModule {}

或者使用您的变量，而不是直接将其放入该输入中！

Or use your variable instead of putting it directly to that input!

这篇关于Angular 2上传多个文件的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！