通过js向授权的asp.net web api请求XLSX文件

var xhr = new XMLHttpRequest();
xhr.open('GET', 'https://example.com/api/file.xlsx', true);
xhr.setRequestHeader('Authorization', 'Bearer your_token_here');
xhr.responseType = 'blob';

xhr.onload = function(e) {
  if (this.status == 200) {
    var blob = new Blob([this.response], {type: 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet'});
    var url = URL.createObjectURL(blob);
    // 在这里可以对获取到的XLSX文件进行处理，比如下载或者解析
  }
};

xhr.send();

[Authorize]
[HttpGet]
[Route("api/file.xlsx")]
public HttpResponseMessage GetFile()
{
    var filePath = "path_to_your_xlsx_file";
    var response = new HttpResponseMessage(HttpStatusCode.OK);
    var fileStream = new FileStream(filePath, FileMode.Open);
    response.Content = new StreamContent(fileStream);
    response.Content.Headers.ContentType = new MediaTypeHeaderValue("application/vnd.openxmlformats-officedocument.spreadsheetml.sheet");
    return response;
}