// file 是取到的文件流

    function uploadImage(file) {
       let formData = new FormData();
       formData.append("file", file);
       formData.append("otherParams", "otherParams");

       return new Promise((resolve, reject) => {
        $.ajax({
          type: "post",
          url: "/user/fileDetail/open/uploadFile",
          processData: false,
          contentType: false,
          // headers: headers,
          data: formData,
          success(res) {
            resolve(res);
          },
          error(error) {
            reject(error);
          },
        });
      });
    }