ngx-filesaver

Simple file save with FileSaver.js

示例

• demo
• Stackblitz

安装

npm install file-saver ngx-filesaver --save

添加 FileSaverModule 模块到项目中：

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

使用方法

支持服务 FileSaverService.save() 或属性指令 fileSaver 两种保存方式。

1、FileSaverService

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

onSave() {
  this._http.get('demo.pdf', {
    responseType: ResponseContentType.Blob // 这里必须是Blob类型
  }).subscribe(res => {
    this._FileSaverService.save((<any>res)._body, fileName);
  });
}

2、fileSaver 属性指令

配置型

<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：属性指令名称。 参数说明

自定义Http型

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

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

关于文件名

文件名的获取按以下优先级：fileName =》 response.headers.get('filename') =》 response.headers.get('x-filename')。

如果你请求的是一个CORS跨域地址，需要注意设置 Access-Control-Allow-Headers: filename，以免无法获取。

类名

Configuring CommonJS dependencies

WARNING in node_modules/ngx-filesaver/ivy_ngcc/fesm2015/ngx-filesaver.js depends on file-saver. CommonJS or AMD dependencies can cause optimization bailouts.

We cannot change this, the only way is to ignore it:

"build": {
  "builder": "@angular-devkit/build-angular:browser",
  "options": {
     "allowedCommonJsDependencies": [
        "file-saver"
     ]
     ...
   }
   ...
},