无法使用 Java 中的 okHTTP multipart-form 数据为我的 android 应用重新创建 cURL POST 请求

Question

我已经尝试了两天，以了解如何复制将图像添加到我的 Craftar 图像识别中的 curl 请求 collection。我能够创建一个项目，但是设置 multipart-data 代码的方法让我失败了。 Craftar 仅提供有关如何 Post 图像文件将其附加到 collection 项目的 cURL 语句。

我已经尝试使用 RequestB.in 和 Postman 来查看我在消息传输中可以看到的内容来弄清楚，但是 okHTTP 方法的组合似乎无法解决问题。我很难过。我已经尝试将 "image/png" 和 "application/octet-stream" 作为我的媒体类型。当我使用 Postman 向它发送测试请求时，RequestB.in 显示 "application/octet-stream"。以下是它显示的消息信息。

这是我试图用 Java 复制的 cURL 语句。

curl -X POST 'https://my.craftar.net/api/v0/image/api_key=123456789abcdefghijk123456789abcdefghijk' -F "item=/api/v0/item/d05924dde1784787a3d6b815e2b1cd69/" -F "file=@back_cover.jpg"

这是我的代码：

        public class OkHttpHandler extends AsyncTask<String, Void, String> {

        OkHttpClient client = new OkHttpClient();

        @Override
        protected String doInBackground(String... params) {

            File storageDir = Environment.getExternalStoragePublicDirectory(
                    Environment.DIRECTORY_PICTURES);
            File file = new File("/storage/emulated/0/Pictures/BlissBotSenderImages/kaytiandkristoffer.jpg");
            RequestBody requestBody = new MultipartBody.Builder()
                    .setType(MultipartBody.FORM)
                    .addFormDataPart("item", "/api/v0/item/d05924dde1784787a3d6b815e2b1cd69/")
                    .addFormDataPart("file","kaytiandkristoffer.jpg",
                    (RequestBody.create (MEDIA_TYPE_PNG, file)))
                    .build();

            Request request = new Request.Builder()
                    .url(postImageUrl)
                    .post(requestBody)
                    .build();

            try {
                Response response = client.newCall(request).execute();
                return response.body().string();
            } catch (Exception e) {
                e.printStackTrace();
            }

下面是 RequestB.in 成功 Post 来自 Postman 消息的详细信息：

FORM/POST 参数项目：/api/v0/item/d05924dde1784787a3d6b815e2b1cd69/

HEADERS Cf-Ray: 3cdba305fb509b62-DFW

通过：1.1 素食主义者

Cf-Visitor: {"scheme":"https"}

Content-Type: multipart/form-data;边界=a11df5d0-f007-4d3a-9849-18fe334c532c

Accept-Encoding: gzip

Content-Length: 3509853

Total-Route-Time: 0

Cf-Connecting-Ip: 2001:5b0:42c4:2ae8:2954:59ea:a3e8:4787

X-Request-Id：766063f7-c368-4467-b5ed-42776ac6f528

主持人：requestb.in

连接：关闭

Cf-Ipcountry：美国

User-Agent: okhttp/3.9.1

Connect-Time: 1

RAW BODY --a11df5d0-f007-4d3a-9849-18fe334c532c Content-Disposition: form-data;姓名="item" Content-Length: 46

/api/v0/item/d05924dde1784787a3d6b815e2b1cd69/ --a11df5d0-f007-4d3a-9849-18fe334c532c Content-Disposition: form-data;名字="file";文件名="kaytiandkristoffer.jpg" Content-Type: application/octet-stream Content-Length: 3509467

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Answer 1

有时问题出在其他地方。沿线的某处我不小心在端点地址中插入了一个无关的字符。我修复了这个问题，上面的代码可以正常工作。

无法使用 Java 中的 okHTTP multipart-form 数据为我的 android 应用重新创建 cURL POST 请求

Not able to recreate a cURL POST request using okHTTP multipart-form data in Java for my android app

java

android

curl

multipartform-data

okhttp3