Android HttpClient post MultipartEntity

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class MyAsyncTask extends AsyncTask<String, Integer, String> {

		String FORM_TABLE_NAME = "ask?action=Chatbottom-toSay-";// 自己需要配置的表单
		String filePath = "/mnt/sdcard/picture.jpg";// 测试写的文件路径，转换成自己的文件路径
		final String hostUrl = "http://www.myhost.com";// 写成自己要上传的地址

		@Override
		protected String doInBackground(String... params) {
			HttpClient httpclient = null;
			httpclient = new DefaultHttpClient();

			final HttpPost httppost = new HttpPost(hostUrl);
			final File imageFile = new File(filePath);
			final MultipartEntity multipartEntity = new MultipartEntity();

			if (false) {
				InputStream in = null;
				try {
					in = new FileInputStream(imageFile);
				} catch (FileNotFoundException e) {
					e.printStackTrace();
				}
				InputStreamBody inputStreamBody = new InputStreamBody(in,
						"android_inputstream.jpg");
				// FormBodyPart formBodyPart = new FormBodyPart(FORM_TABLE_NAME,
				// contentBody);
				multipartEntity.addPart(FORM_TABLE_NAME, inputStreamBody);
			}
			if (false) {
				ContentBody contentBody = new FileBody(imageFile);
				FormBodyPart formBodyPart = new FormBodyPart(FORM_TABLE_NAME,
						contentBody);
				multipartEntity.addPart(formBodyPart);
			}
			if (false) {
				// FileBody fileBody = new FileBody(imageFile, "image/jpeg",
				// "utf-8");
				FileBody fileBody = new FileBody(imageFile);
				multipartEntity.addPart(FORM_TABLE_NAME, fileBody);
			}

			if (true) {
				Bitmap photoBM = BitmapFactory.decodeFile(filePath);
				if (photoBM == null) {
					return null;
				}
				ByteArrayOutputStream photoBao = new ByteArrayOutputStream();
				boolean successCompress = photoBM.compress(CompressFormat.JPEG,
						80, photoBao);
				if (!successCompress) {
					return null;
				}
				ByteArrayBody byteArrayBody = new ByteArrayBody(
						photoBao.toByteArray(), "android.jpg");
				photoBM.recycle();
				// InputStreamBody inbody = new InputStreamBody(new InputStream,
				// filename);
				multipartEntity.addPart(FORM_TABLE_NAME, byteArrayBody);
			}

			httppost.setEntity(multipartEntity);

			HttpResponse httpResponse;
			try {
				httpResponse = httpclient.execute(httppost);

				final int statusCode = httpResponse.getStatusLine()
						.getStatusCode();

				String response = EntityUtils.toString(
						httpResponse.getEntity(), HTTP.UTF_8);
				IWLog.d("got response:n" + response);

				if (statusCode == HttpStatus.SC_OK) {
					return "success";
				}

			} catch (ClientProtocolException e) {
				e.printStackTrace();
			} catch (IOException e) {
				e.printStackTrace();
			} finally {
				if (httpclient != null) {
					httpclient.getConnectionManager().shutdown();
					httpclient = null;
				}
			}
			return null;

		}

		@Override
		protected void onPostExecute(String result) {
			super.onPostExecute(result);
			if (result.equals("success")) {

			}
		}

	}