Php 如何以精确的扩展名下载文件

我想用硬线通过HTML标签从服务器下载一个文件

status.html

<ion-col size="2" style="border-right:none;" >

 <ng-container *ngFor="let doc of document; ">

  <a href="http://myinnovativetest.com/CR/uploads/{{doc}}" 


(click)="download(doc)"  download>

  {{doc}}

</a><br />
      </ng-container>

我希望下载文件download.jpg，但它下载为download.html，您可以使用

从“文件保护程序”导入{saveAs}

download(doc) {
    this.fileService.downloadFile().subscribe(response => {

      FileSaver.saveAs(response, "data.pdf");

    }), error => console.log('Error downloading the file'),

      () => console.info('File downloaded successfully');

  }

download(doc){
  this.fileService.downloadFile().subscribe(response => {

window.location.href = response.url;

 console.log(response.url)

 }), error => console.log('Error downloading the file'),

 () => console.info('File downloaded successfully');

//console.log("hello")
}

download(doc) {
    this.fileService.downloadFile().subscribe(response => {

      FileSaver.saveAs(response, "data.pdf");

    }), error => console.log('Error downloading the file'),

      () => console.info('File downloaded successfully');

  }