Android：使用MultiPartEntityBuilder上传图片和JSON

Question

我尝试将数据上传到服务器，我的数据包含多张图片和大图片JSON，在此之前，我尝试使用将图片转换为字符串，base64并使用之前发送过的其他数据和图片JSON，但是我OutOfMemory在这里遇到问题，因此，我阅读了其中一种必须尝试使用​​的解决方案MultipartEntityBuilder。我仍然感到困惑，不知道如何使用它MultiPartEntityBuilder，有没有人可以帮助我使用该方法MultiPartEntityBuilder呢？这是我的代码：

    try{
    //membuat HttpClient
    //membuat HttpPost
    HttpPost httpPost= new HttpPost(url);
    SONObject jsonObjectDP= new JSONObject();
    System.out.println("file audio "+me.getModelDokumenPendukung().getAudio());
    jsonObjectDP.put("audio_dp",MethodEncode.EncodeAudio(me.getModelDokumenPendukung().getAudio()));
    jsonObjectDP.put("judul_audio",me.getModelDokumenPendukung().getJudul_audio());
    jsonObjectDP.put("ket_audio",me.getModelDokumenPendukung().getKet_audio());
    JSONArray ArrayFoto= new JSONArray();

    //This loop For my multiple File  Images
    List<ModelFoto>ListFoto=me.getModelDokumenPendukung().getListFoto();
    for (int i=0; i<ListFoto.size();i++) {
        JSONObject jsonObject= new JSONObject();
        jsonObject.put("foto", ListFoto.get(i).getFile_foto());
        jsonObject.put("judul_foto", ListFoto.get(i).getJudul_foto());
        jsonObject.put("ket_foto", ListFoto.get(i).getKet_foto());
        ArrayFoto.put(jsonObject);

    }

    JSONObject JSONESPAJ=null;
     JSONESPAJ = new JSONObject();
     JSONObject JSONFINAL = new JSONObject();
            JSONESPAJ.put("NO_PROPOSAL",me.getModelID().getProposal());
            JSONESPAJ.put("GADGET_SPAJ_KEY",me.getModelID().getIDSPAJ());
            JSONESPAJ.put("NO_VA",me.getModelID().getVa_number());
            JSONESPAJ.put("Dokumen_Pendukung",jsonObjectDP);

            JSONFINAL.put("ESPAJ", JSONESPAJ);
            JSONFINAL.put("CLIENT", "ANDROID");
            JSONFINAL.put("APP", "ESPAJ");

            MultipartEntityBuilder multiPartEntityBuilder= MultipartEntityBuilder.create();
    multiPartEntityBuilder.addPart("ESPAJ",JSONFINAL.toString());

    httpPost.setEntity(multiPartEntityBuilder.build());

    HttpResponse httpResponse = httpclient.execute(httpPost);


    inputStream = httpResponse.getEntity().getContent();
        if(inputStream != null)
        result = convertInputStreamToString(inputStream);
    else
        result = "Did not work!";
}catch(OutOfMemoryError e){
      Log.e("MEMORY EXCEPTION: ", e.toString());
} catch(ConnectTimeoutException e){
    Log.e("Timeout Exception: ", e.toString());
} catch(SocketTimeoutException ste){    
    Log.e("Timeout Exception: ", ste.toString());
} catch (Exception e) {
//    Log.d("InputStream", e.getLocalizedMessage());
}
private static String convertInputStreamToString(InputStream inputStream) throws IOException{
    BufferedReader bufferedReader = new BufferedReader( new InputStreamReader(inputStream));
    String line = "";
    String result = "";
    while((line = bufferedReader.readLine()) != null)
//      hasil=line;
        result += line;

    inputStream.close();
    return result;

}

有没有人可以帮助我教导和告诉我如何使用MultiPartEntityBuilder发送JSON和图像？

Answer 1

要发送二进制数据，您需要使用的addBinaryBody方法MultipartEntityBuilder。附件样本：

import org.apache.http.entity.ContentType;
import org.apache.http.entity.mime.MultipartEntityBuilder;
//Image attaching
MultipartEntityBuilder multipartEntity = MultipartEntityBuilder.create();
File file;
multipartEntity.addBinaryBody("someName", file, ContentType.create("image/jpeg"), file.getName());
//Json string attaching
String json;
multipartEntity.addPart("someName", new StringBody(json, ContentType.TEXT_PLAIN));

然后像往常一样发出请求：

HttpPut put = new HttpPut("url");
put.setEntity(multipartEntity.build());
HttpResponse response = client.execute(put);
int statusCode = response.getStatusLine().getStatusCode();