无法以多部分形式开机自检图像

Question

我正在尝试将camfind用于Android应用程序，并对所有请求进行改装等等。我发现使用多部分表单数据将图像文件上传到服务器非常困难。你能解决这个问题吗？

我的代码：

public class getCamFind {
//Set constants
private static final String TAG = MainActivity.class.getSimpleName();
private static final String API_URL = "https://camfind.p.mashape.com";
//creates object getCamFind, sends request and gets answer
static void getCamResult(String path) throws IOException {
    File imageFile = new File(path); //THIS FILE EXISTS AND SD IS MOUNTED

    String language = new String("en_US");
    String keyMashape = "XXX";

    RestAdapter restAdapter = new RestAdapter.Builder()
            .setEndpoint(API_URL)
            .setLogLevel(RestAdapter.LogLevel.FULL)
            //.setRequestInterceptor(new SessionRequestInterceptor())
            .build();

    // Create an instance of our API interface.
    CamFind camFind = restAdapter.create(CamFind.class);
    camFind.send(keyMashape, language, new TypedFile("image/jpeg", imageFile), new Callback<resultClass>() {
        @Override
        public void success(resultClass result, Response response) {
            Log.d(TAG, response.toString());
            Log.d(TAG, result.getStatus());
            Log.d(TAG, response.getBody().toString());
        }
        @Override
        public void failure(RetrofitError retrofitError) {
            Log.d(TAG, "Error : " + retrofitError.getMessage());
        }
    });
}
static class Contributor {
    String login;
    int contributions;
}

//interface of the object getCamFind
interface CamFind {
    @Multipart
    @POST("/image_requests")
    void send(
            @Header("X-Mashape-Key") String keyMashape,
            @Part("image_request[locale]") String language,
            @Part("image_request[image]") TypedFile imageFile,
            //@Field("image_request[remote_image_url]") String URL,
            Callback<resultClass> callback);
}
private class resultClass{
    String name;
    String status;
    public String getName(){return this.name;}
    public String getStatus(){return this.status;}

}

}

当我以这种方式发送它时，它会显示"{"error": {"image": ["invalid image format"]}}"，而当我使用File而不是键入的文件发送时，它显示"image": ["can't be blank"]。

这可能很有用，它是我使用cloudsight的POST的改装日志（基本上与使用mashape完全相同，请求相同）：

        06-29 16:59:43.866    2483-2502/bookshotco.bookshot2 D/Retrofit﹕ ---> HTTP POST https://api.cloudsightapi.com/image_requests
    06-29 16:59:43.866    2483-2502/bookshotco.bookshot2 D/Retrofit﹕ Authorization: CloudSight XXX
    06-29 16:59:43.866    2483-2502/bookshotco.bookshot2 D/Retrofit﹕ Content-Type: multipart/form-data; boundary=ac3731a5-466f-4baf-87d1-b21fddc41701
    06-29 16:59:43.866    2483-2502/bookshotco.bookshot2 D/Retrofit﹕ Content-Length: 531
    06-29 16:59:43.879    2483-2502/bookshotco.bookshot2 D/Retrofit﹕ --ac3731a5-466f-4baf-87d1-b21fddc41701
    Content-Disposition: form-data; name="image_request[locale]"
    Content-Type: text/plain; charset=UTF-8
    Content-Length: 5
    Content-Transfer-Encoding: binary
    en_US
    --ac3731a5-466f-4baf-87d1-b21fddc41701
    Content-Disposition: form-data; name="image_request[image]"; filename="JPEG_20150627_231626_1086927409.jpg"
    Content-Type: image/jpeg
    Content-Length: 0
    Content-Transfer-Encoding: binary
    --ac3731a5-466f-4baf-87d1-b21fddc41701--
    06-29 16:59:43.880    2483-2502/bookshotco.bookshot2 D/Retrofit﹕ ---> END HTTP (531-byte body)

这可能也很有用（参见"image_requests"部分）：http://cloudsight.readme.io/v1.0/docs/testinput

Answer 1

正如您在改装文档中看到的，构造函数的第一个参数不是文件的路径。

TypedFile(String mimeType, File file)
Constructs a new typed file.

它是模仿型的。尝试

new TypedFile("image/png", imageFile) 

或

new TypedFile("image/jpeg", imageFile)