okhttp多部分图像上传文件名

Question

我试图从Android手机上传图像到服务器.这就是我到目前为止所做的

  OkHttpClient client = new OkHttpClient();
            MultipartBuilder builder = new MultipartBuilder();


builder.type(MultipartBuilder.FORM).addPart(RequestBody.create(MediaType.parse("application/json; charset=utf-8"), requestPackage.getJsonParam().toString()));
            for (int i = 0; i < requestPackage.getPics().size(); i++) {
                builder.addPart(RequestBody.create(MediaType.parse("image/png"/* + i*/), new File(URI.create(requestPackage.getPics().get(i)))));
            Log.i("image to upload",URI.create(requestPackage.getPics().get(i)).toString());
            }
            requestBody = builder.build();
     Request request = new Request.Builder().url(requestPackage.getUri()).post(requestBody).build();
            try {
                response = client.newCall(request).execute();
                if (!response.isSuccessful()) throw new IOException("Unexpected code " + response);
    //            System.out.println(response.body().string());
                return response.body().string();
            } catch (IOException e) {
                e.printStackTrace();
            }

我如何为不同的部分添加名称.因为如果没有名称(关键),那么服务器端的人将如何存储它？

Answer 1

获取OkHttp 2.1,并使用MultipartBuilder.addFormDataPart()以文件名作为参数.

Answer 2

自从之前的答案以来,语法似乎发生了一些变化.我正在使用OkHttp 3.2.0.

public void upload(String url, File file) throws IOException {
    RequestBody formBody = new MultipartBody.Builder()
        .setType(MultipartBody.FORM)
        .addFormDataPart("file", file.getName(),
            RequestBody.create(MediaType.parse("image/png"), file))
        .addFormDataPart("other_field", "other_field_value")
        .build();
    Request request = new Request.Builder().url(url).post(formBody).build();
    Response response = this.client.newCall(request).execute();
}