如何使用ng2- file -upload + angular 2获取文件对象

Question

我想在文件拖拽时完成上传:我使用的是ng2- file -upload 1.2.1版本，代码片段如下：

app.module.ts：

import { FileUploadModule } from 'ng2-file-upload/ng2-file-upload';
..
imports: [
        FileUploadModule
]

component.ts：

import { FileUploader } from 'ng2-file-upload/ng2-file-upload';

...

class AppXYZComponent{
private uploader: FileUploader = new FileUploader({ url: 'blah.com' });

    public hasBaseDropZoneOver:boolean = false;
    //public hasAnotherDropZoneOver:boolean = false;

    public fileOverBase(e:any):void {
        console.log("hasBaseDropZoneOver", e);
        this.hasBaseDropZoneOver = e;
    }
}

app.component.html：

<div class="well" ng2FileDrop [uploader]="uploader" [ngClass]="{'another-file-over-class': hasBaseDropZoneOver}"
             (fileOver)="fileOverBase($event)"
             >
            Drop CSV here
        </div>

在拖动时成功调用函数fileOverBase，并将事件e打印为true。现在，我如何才能获得被拖动文件的对象？？

Answer 1

您需要使用afterAddingfile方法来获取ng2- file -upload插件中的文件对象。

import { FileUploader } from 'ng2-file-upload/ng2-file-upload';
...

class AppXYZComponent{
public uploader: FileUploader;
public hasBaseDropZoneOver:boolean = false;
//public hasAnotherDropZoneOver:boolean = false;

constructor(){
   this.uploader = new FileUploader({ url: 'blah.com' });
   this.uploader.onAfterAddingFile = (fileItem) => {
                fileItem.withCredentials = false;
                console.log(fileItem); // fileItem is the file object
            };
}
 public fileOverBase(e:any):void {
    console.log("hasBaseDropZoneOver", e);
    this.hasBaseDropZoneOver = e;
  }
}

Answer 2

我知道它的回复很晚，但希望它能对其他人有所帮助

更改app.component.html:使用**代码

<div class="well" ng2FileDrop [uploader]="uploader" [ngClass]="{'another-file-over-class': hasBaseDropZoneOver}"
         (fileOver)="fileOverBase($event)" **(onFileDrop)="onFileDrop($event)"**
         >
        Drop CSV here
    </div>

修改component.ts:如下所示**代码

class AppXYZComponent{
private uploader: FileUploader = new FileUploader({ url: 'blah.com' });

public hasBaseDropZoneOver:boolean = false;
//public hasAnotherDropZoneOver:boolean = false;

public fileOverBase(e:any):void {
    console.log("hasBaseDropZoneOver", e);
    this.hasBaseDropZoneOver = e;
}

**public onFileDrop(fileList: File[]) {
    console.log(fileList);// u get file as fileList[0]
}**
}