Flutter/Dart: 如何上传二进制文件到Dropbox？

Question

我正在尝试使用 https://github.com/dart-lang/http. Following https://dropbox.github.io/dropbox-api-v2-explorer/#files_upload 将二进制文件上传到 Dropbox，我的代码是：

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

Map<String,String> headers = {
  'Authorization': 'Bearer MY_TOKEN',
  'Content-type': 'application/octet-stream',
  'Dropbox-API-Arg': '{"path": "/file", "mode": "overwrite"}',
};

final resp = await http.post(
    Uri.parse("https://content.dropboxapi.com/2/files/upload"),
    body: "--data-binary @\'/my/binary/file\'",
    headers: headers);

file 已上传，但不幸的是，这仅包含文本 --data-binary @'/my/binary/file'（即不是实际文件）。

我是不是漏掉了something/doing什么东西？

Answer 1

既然你通过了

body: "--data-binary @\'/my/binary/file\'",

作为您的 POST 请求的正文，这正是要发送到服务器的数据。正文是原始数据，只是传递到服务器，不会被 dart 解释。

看看 Dart 的 MultipartRequest. Or for general information:SO on multipart requests。

Answer 2

正文工作时直接发送二进制数据：

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

final file = File('/my/binary/file');
Uint8List data = await file.readAsBytes();

Map<String,String> headers = {
    'Authorization': 'Bearer MY_TOKEN',
    'Content-type': 'application/octet-stream',
    'Dropbox-API-Arg': '{"path": "/file", "mode": "overwrite"}',
};

final resp = await http.post(
    Uri.parse("https://content.dropboxapi.com/2/files/upload"),
    body: data,
    headers: headers);

Flutter/Dart: 如何上传二进制文件到Dropbox？

Flutter/Dart: How upload binary file to Dropbox?

api

http

dropbox

dart

flutter