Question

我试图通过从angular2连接spring boot来下载excel文件。我的启动如下所示

@RequestMapping(method = RequestMethod.GET,value="/downloadExcel/{weekEnd}",produces=MediaType.APPLICATION_OCTET_STREAM_VALUE)
public ResponseEntity  downloadLastWeekOOOData(@PathVariable String weekEnd,HttpServletRequest request,HttpServletResponse response) throws IOException{


    File result=new File("C:\\sayan\\poi-test.xls");
    String type=result.toURL().openConnection().guessContentTypeFromName("poi-test.xls");
    FileInputStream inputStream = new FileInputStream(new File("C:\\sayan\\poi-test.xls"));
    byte[]out=org.apache.commons.io.IOUtils.toByteArray(inputStream);

    HttpHeaders responseHeaders = new HttpHeaders();
    responseHeaders.add("content-disposition", "attachment; filename=" + "poi-test.xlsx");
    responseHeaders.add("Content-Type",type);

    ResponseEntity  respEntity = new ResponseEntity(out, responseHeaders,HttpStatus.OK);
    System.out.println(respEntity.getBody());
    return respEntity;

}

angular2代码看起来像：

downloadExcel(weekEnd: string) {
let downloadSuccess: boolean = false;
this.lastWeekOOOService.downloadExcel(weekEnd)
  .subscribe(blob => {
    var link = document.createElement('a');
    link.href = window.URL.createObjectURL(blob);
    link.download = "Report.xlsx";
    link.click();
  },
  error => console.log("Error downloading the file."),
  () => console.info("OK"));

}

服务看起来像：

downloadExcelOOO(weekEnd:string): Observable<Response> {
    return this._http.get('http://localhost:8080/downloadExcel/'+weekEnd)
                .map(res => new Blob([res],{ type: 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet' }))
                .catch(this.handleError);
}

但我收到的文件Report.xlsx已下载，已损坏。

Answer 1

将Excel复制为输入流，以在春季响应输出流。在尖角后将httpoptions放在post中，在httpoptions中将参数responseType：'arraybuffer'放入'arraybuffer'。在订阅中直接使用blob中的arraybuffer对象

通过Spring启动Angular2 excel文件下载

1 个答案: