我尝试将数据上传到服务器,我的数据包含多个图像和大的JSON
,在此之前,我尝试使用base64
将图像转换为字符串发送,并发送我以前使用JSON
转换过的另一个数据和图像,但我在这里遇到了问题OutOfMemory
,所以我阅读了其中一个解决方案,其中说我必须使用MultipartEntityBuilder
。我仍然很困惑,不明白如何使用MultiPartEntityBuilder
,有人能帮我使用MultiPartEntityBuilder
的方法吗?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;
}
有人可以帮助我教我如何使用MultiPartEntityBuilder发送JSON和图像吗?
要发送二进制数据,需要使用MultipartEntityBuilder
的addBinaryBody
方法。附着样品:
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));
然后像往常一样提出请求:
HttpPut put = new HttpPut("url");
put.setEntity(multipartEntity.build());
HttpResponse response = client.execute(put);
int statusCode = response.getStatusLine().getStatusCode();
有我的解决方案,用于通过POST请求发送图像和文本字段(使用apachehttp库(。Json可以以相同的方式添加,作为我的字段组和所有者。
ByteArrayOutputStream baos = new ByteArrayOutputStream();
bitmap.compress(Bitmap.CompressFormat.PNG, 100, baos);
byte[] imageBytes = baos.toByteArray();
HttpClient httpclient = new DefaultHttpClient();
HttpPost httpPost = new HttpPost(StaticData.AMBAJE_SERVER_URL + StaticData.AMBAJE_ADD_AMBAJ_TO_GROUP);
String boundary = "-------------" + System.currentTimeMillis();
httpPost.setHeader("Content-type", "multipart/form-data; boundary="+boundary);
ByteArrayBody bab = new ByteArrayBody(imageBytes, "pic.png");
StringBody sbOwner = new StringBody(StaticData.loggedUserId, ContentType.TEXT_PLAIN);
StringBody sbGroup = new StringBody("group", ContentType.TEXT_PLAIN);
HttpEntity entity = MultipartEntityBuilder.create()
.setMode(HttpMultipartMode.BROWSER_COMPATIBLE)
.setBoundary(boundary)
.addPart("group", sbGroup)
.addPart("owner", sbOwner)
.addPart("image", bab)
.build();
httpPost.setEntity(entity);
try {
HttpResponse response = httpclient.execute(httpPost);
...then reading response
Log.d(LOG_SERVICE_TAG, "Sending Multipart Image with Json data"+");
InputStream imageStream;
JSONObject objResult;
boolean bSucess = true;
// Base 64 image string was stored with image object ,
String imageBase64 = image.getImageString();
// This base64 to byte , One can directly read bytes from file from Disk
String imageDataBytes = imageBase64.substring( imageBase64.indexOf(",")+1);
HttpClient client = null;
HttpPost post = null;
HttpResponse response = null;
HttpEntity httpEntity = null;
String result;
imageStream = new ByteArrayInputStream(Base64.decode(imageDataBytes.getBytes(), Base64.DEFAULT));
try{
//Forming Json Object
JSONObject jsonImageMetdata = new JSONObject();
JSONObject objMultipart = new JSONObject();
try {
objMultipart.put("param1", "param 1 value");
objMultipart.put("param2", "param 2 value" );
objMultipart.put("param3","param 3 value" );
objMultipart.put("param4", "param 4 value");
jsonImageMetdata.put("MultipartImageMetadata", objMultipart);
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
// converting json data to string
String strImageMetadata = jsonImageMetdata.toString();
client = new DefaultHttpClient();
post = new HttpPost("https://abcd");
MultipartEntityBuilder entityBuilder = null;
try{
entityBuilder = MultipartEntityBuilder.create();
}
catch(Exception a){
Log.d("name",a.getMessage());
throw a;
}
entityBuilder.setMode(HttpMultipartMode.BROWSER_COMPATIBLE);
// adding text
entityBuilder.addTextBody("dummyParameter","Dummy text",ContentType.TEXT_PLAIN);
// adding Image
if(imageStream != null){
entityBuilder.addBinaryBody("file", imageStream,ContentType.create("image/jpeg"),"imagename.jpg");
}
// sending formed json data in form of text
entityBuilder.addTextBody("descriptions", strImageMetadata, ContentType.APPLICATION_JSON) ;
HttpEntity entity = entityBuilder.build();
post.setEntity(entity);
response = client.execute(post);
httpEntity = response.getEntity();
result = EntityUtils.toString(httpEntity);
从Apache下载httpcore-4.3.2.jar、httpmime-4.3.3.jar,并将它们添加到Android项目的lib文件夹中,以使用MultipartEntityBuilder