如何使用mime类型的音频在flutter中使用分块表单数据上传图像

import 'dart:io';
import 'package:http/http.dart' as http;

File imageFile = File('path_to_image.jpg');
String mimeType = 'audio/mpeg'; // 使用音频的MIME类型

var request = http.MultipartRequest('POST', Uri.parse('upload_url'));

request.files.add(await http.MultipartFile.fromPath('image', imageFile.path, contentType: MediaType(mimeType.split('/')[0], mimeType.split('/')[1])));

var response = await request.send();

if (response.statusCode == 200) {
  // 上传成功
  print('Image uploaded successfully');
} else {
  // 上传失败
  print('Image upload failed with status code: ${response.statusCode}');
}