Flutter DIO:使用带有 Dio 包的二进制体上传图像

问题描述

使用 http 包，我可以通过将二进制数据放入 post 调用的正文中来将图像发送到服务器，就像此代码的片段一样:

With thwe http package I can send an image to a server by putting te binary data in the body of a post call like in the snippet of this code:

var response = await http.post('My_url', body: File(path).readAsBytesSync(),  headers: {
                    'apikey': 'myAPIKEY',
                    'Content-Type': 'image/*', // set content-length
                  });

我不能用Dio做同样的事情，我不知道如何将二进制数据直接放入body中(就像我可以用postman来做)

I can't do the same thing by using Dio, I don't know how to put directly the binary data in the body (like i can do it with postman)

推荐答案

我也遇到了和你一样的情况.在 DIO 中，您必须通过流发送二进制数据.这是我如何实现它的示例，

I also faced the same you have. In DIO you have to send the binary data through streams. Here is the example how I achieved it,

Uint8List image = File(path).readAsBytesSync();

Options options = Options(
  contentType: lookupMimeType(path),
  headers: {
    'Accept': "*/*",
    'Content-Length': image.length,
    'Connection': 'keep-alive',
    'User-Agent': 'ClinicPlush'
  }
);

Response response = await dio.put(
  url,
  data: Stream.fromIterable(image.map((e) => [e])),
  options: options
);

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