Android：使用数组中的改造将多个图像作为文件发送到服务器

Question

我需要将 4 个图像作为文件发送到服务器（我无法转换为位图或字符串），服务器应该接收数组中的所有 4 个文件（文件 []）仅作为数组。我如何使用 RETROFIT 在 android 中实现这一点

有关所需的服务器上传，请参见下文

D/OkHttp: pics=[image1,image2,image3,image4]&txt=&pic=true&type=img

Answer 1

要在改造 2 中上传图片，请尝试此代码

像这样创建 Api 接口：

@Multipart
@POST("uploadAttachment")
Call<MyResponse> uploadAttachment(@Part MultipartBody.Part filePart);

然后像这样上传文件：

File file = // initialize file here

MultipartBody.Part filePart = MultipartBody.Part.createFormData("pics", file.getName(), RequestBody.create(MediaType.parse("image/*"), file));

Call<MyResponse> call = api.uploadAttachment(filePart);

Answer 2

最佳做法是一张一张上传图片。相反，如果您的请求失败，它将消耗时间/数据，因为它有许多图像。

但你可以做到这一点，请按照以下代码：

Retrofit Version: 'com.squareup.retrofit2:retrofit:2.1.0'

AddMediaMessageRequestEvent对象类：

public class AddMediaMessageRequestEvent implements Serializable {
    public String token;
    public Map<String, RequestBody[]> bodyMap;
}

MainActivity.java：

AddMediaMessageRequestEvent request = new AddMediaMessageRequestEvent();
Map<String, RequestBody> map = new HashMap<>();
//"thumbFile" is your image file
RequestBody[] thumbBody = new RequestBody[3];
thumbBody[0] = RequestBody.create(MediaType.parse("image/jpg"), thumbFile);
thumbBody[1] = RequestBody.create(MediaType.parse("image/jpg"), thumbFile);
map.put(toRequestParams(thumbFile), thumbBody);
request.bodyMap = map

toRequestParams(//file)方法：

private String toRequestParams(File thumbFile) {
    // "thumb" is the API key
    return "thumb\"; filename=\"" + thumbFile.getName() + ".jpg\"";
}

改装电话：

Call<ResponseMessage> call = mApi.addMediaMessage(request.token, request.bodyMap);
call.enqueue(//new Callback())

API：

@Multipart
    @POST("/api/{id}/add-media-message")
    Call<ResponseMessage> addMediaMessage(
            @Header(AppConstants.HEADER_PARA_TOKEN) String token,
            @PartMap Map<String, RequestBody> params);

Answer 3

试试这个 第1步。 接口类

@Multipart
@POST("/api/V1/CreateTicket")
Observable<DefaultResponse> postTicket(@Header("Authorization") String Auth, @Part("siteId") RequestBody site_id,
                                       @Part("incidentId") RequestBody incidentid, @Part("isEmergency") RequestBody emergency, @Part("ticketNotes") RequestBody note,
                                       @Part MultipartBody.Part[] attachment);

第 2 步。

MultipartBody.Part[] multipartTypedOutput = new MultipartBody.Part[image.size()];

    for (int index = 0; index < image.size(); index++) {
        Log.d("Upload request", "requestUploadSurvey: survey image " + index + "  " + image.get(index));
        File file2 = new File(image.get(index));
        RequestBody surveyBody = RequestBody.create(MediaType.parse("image/*"), file2);
        multipartTypedOutput[index] = MultipartBody.Part.createFormData("imageFiles[]", file2.getPath(), surveyBody);
    }

保重和享受......

Answer 4

这里是使用改造发送多张图片的代码

MultipartBody.Builder builder = new MultipartBody.Builder();
    builder.setType(MultipartBody.FORM);
    builder.addFormDataPart("event_name", eventName);
    builder.addFormDataPart("location", loacation);
    builder.addFormDataPart("longitude", longitude);
    builder.addFormDataPart("latitude", latitude);
    builder.addFormDataPart("is_private", isPublic);
    RequestBody requestBody = RequestBody.create(MediaType.parse("multipart/form-data"), coverImage);
    builder.addFormDataPart("cover_image", coverImage.getName(), requestBody);
    RequestBody requestBody1 = null;

    for (int i = 0, size = eventFiles.size(); i < size; i++) {
        requestBody1 = RequestBody.create(MediaType.parse("multipart/form-data"), eventFiles.get(i));
        builder.addFormDataPart("album_images" + "[" + i + "]", eventFiles.get(i).getName(), requestBody1);
    }
    RequestBody finalRequestBody = builder.build();

    final Retrofit retrofit = new Retrofit.Builder()
            .baseUrl(RestClient.ROOT)
            .addConverterFactory(GsonConverterFactory.create())
            .build();
    RestClient.NetworkCall networkCall = retrofit.create(RestClient.NetworkCall.class);
Call<EventResponse> response = networkCall.uploadEvent(Prefs.getAuth(App.getContext()), finalRequestBody);

 @POST(UPLOAD_EVENT)
    Call<EventResponse> uploadEvent(@Header("Authorization") String auth,@Body RequestBody body);

Answer 5

我终于用这种方法做到了

MultipartBody.Part[] partfiles=new MultipartBody.Part[4];


        try{
            int size=imagesList.size();
            for(int i=0;i<imagesList.size();i++){
                if(i<4){

                    try{
                        partfiles[i] = MultipartBody.Part.createFormData("pics["+i+"]",
                                Calendar.getInstance().getTimeInMillis()+".jpg",
                                RequestBody.create(MediaType.parse("image/*"),getJPEGFile(new File(imagesList.get(i)))));
                    }catch (Exception e){}

                }
            }

        }catch (Exception e){}

而 api 命中是

Call<JsonObject> call=service.requestUpload(hello.getString("authorization",""),partfiles[0],partfiles[1],partfiles[2],partfiles[3]);

和api接口是

@Multipart
@POST("api/myphotoupload")
Call<JsonObject> requestUpload(@Header("Authorization") String headerToken,
                                @Part MultipartBody.Part postImagesZero,
                                @Part MultipartBody.Part postImagesOne,
                                @Part MultipartBody.Part postImagesTwo,
                                @Part MultipartBody.Part postImagesThree);

Answer 6

@Part 注释必须提供名称或使用 MultipartBody.Part 参数类型。 （参数#1） 在 android studio 3.4 的界面中显示 @Part MultipartBody.Part[] 错误