ngx-filesaver

ngx-filesaver

Simple file save with FileSaver.js

中文版

Examples

• demo
• Stackblitz

Installation

npm install file-saver ngx-filesaver --save

Add the FileSaverModule module to your project：

import { FileSaverModule } from 'ngx-filesaver';
@NgModule({
  imports: [ FileSaverModule ]
})

Instructions

There are two ways to save a file: using FileSaverService.save() or using the fileSaver directive.

1、FileSaverService

constructor(private _http: Http, private _FileSaverService: FileSaverService) {
}

onSave() {
  let options = new RequestOptions({
    responseType: ResponseContentType.Blob // 这里必须是Blob类型
  });

  this._http.get('demo.pdf', options).subscribe(res => {
    this._FileSaverService.save((<any>res)._body, fileName);
  });
}

2、fileSaver directive

Configuration example

<button type="button"
        fileSaver
        [method]="'GET'"
        [fileName]="'中文pdf.pdf'"
        [url]="'assets/files/demo.pdf'"
        [header]="{ token: 'demo' }"
        [query]="{ pi: 1, name: 'demo' }"
        (success)="onSuc($event)"
        (error)="onErr($event)">Download PDF</button>

fileSaver： the directive name Parameters

Parameter	Description	Type	Default
method	Request method type	string	GET
url	Request URL	string	-
fileName	Filename when downloading	string	-
query	Additional query parameters. Equivalent to params value	string	-
header	Header configuration. Usually used for especifying access tokens	any	-
success	Download success callback	EventEmitter<any>	-
error	Download error callback	EventEmitter<any>	-

Custom HTTP type

<button type="button"
        fileSaver
        [http]="onRemote('pdf', true)">Download PDF</button>

onRemote(type: string, fromRemote: boolean): Observable<Response> {
  let options = new RequestOptions({
    responseType: ResponseContentType.Blob
  });
  return this._http.get(`assets/files/demo.${type}`, options).map(response => {
    response.headers.set('filename', `demo.${type}`)
    return response;
  });
}

About filenames

The name for the downloaded file is obtained with the following priority:

1. fileName
2. response.headers.get('filename')
3. response.headers.get('x-filename')。

If you are requesting a CORS address, you need to pay attention to the request headers. Setting Access-Control-Allow-Headers: filename should be sufficient