如何使用retrofit2上传图片文件？

@Multipart
@POST("upload")
Call<ResponseBody> uploadImage(@Part MultipartBody.Part image);

File file = new File("path/to/image.jpg");
RequestBody requestBody = RequestBody.create(MediaType.parse("image/*"), file);
MultipartBody.Part imagePart = MultipartBody.Part.createFormData("image", file.getName(), requestBody);

Retrofit retrofit = new Retrofit.Builder()
        .baseUrl("http://api.example.com/")
        .build();

ApiService apiService = retrofit.create(ApiService.class);

Call<ResponseBody> call = apiService.uploadImage(imagePart);
call.enqueue(new Callback<ResponseBody>() {
    @Override
    public void onResponse(Call<ResponseBody> call, Response<ResponseBody> response) {
        // 上传成功的处理逻辑
    }

    @Override
    public void onFailure(Call<ResponseBody> call, Throwable t) {
        // 上传失败的处理逻辑
    }
});