@RequestMapping(value = \"/uploadMyImage/{token}\", method = RequestMethod.POST) 
public @ResponseBody String getUploadFile(HttpServletRequest request, HttpServletResponse response, 
@PathVariable String token) { 
logger.info(\"spring3 MVC upload file with Multipart form\"); 
logger.info(\"servlet context path : \" + request.getSession().getServletContext().getRealPath(\"/\")); 
UserDto profileDto = userService.getUserByToken(token); 
String imgUUID = \"\"; 
try { 
if (request instanceof MultipartHttpServletRequest && profileDto.getToken() != null) { 
MultipartHttpServletRequest multipartRequest = (MultipartHttpServletRequest) request; 
logger.info(\"spring3 MVC upload file with Multipart form\"); 
// does not work, oh my god!! 
MultipartFile file = multipartRequest.getFiles(\"myfile\").get(0); 
InputStream input = file.getInputStream(); 
long fileSize = file.getSize(); 
BufferedImage image = ImageIO.read(input); 
// create data transfer object 
ImageDto dto = new ImageDto(); 
dto.setCreateDate(new Date()); 
dto.setFileName(file.getOriginalFilename()); 
dto.setImage(image); 
dto.setCreator(profileDto.getUserName()); 
dto.setFileSize(fileSize); 
dto.setType(ImageAttachmentType.CLIENT_TYPE.getTitle()); 
dto.setUuid(UUID.randomUUID().toString()); 
/// save to DB 
imgUUID = imageService.createImage(dto); 
input.close(); 
} 
} catch (Exception e) { 
e.printStackTrace(); 
logger.error(\"upload image error\", e); 
} 
return imgUUID; 
}

package com.demo.http; 
import java.io.BufferedInputStream; 
import java.io.DataOutputStream; 
import java.io.File; 
import java.io.FileInputStream; 
import java.io.IOException; 
import java.io.InputStream; 
import java.net.HttpURLConnection; 
import java.net.URL; 
import java.util.Random; 
import android.os.Handler; 
import android.util.Base64; 
import android.util.Log; 
public class UploadImageTask implements APIURLConstants { 
private String requestURL = DOMAIN_ADDRESS + UPLOAD_DESIGN_IMAGE_URL; // default 
private final String CRLF = \"\\r\\n\"; 
private Handler handler; 
private String token; 
public UploadImageTask(String token, Handler handler) { 
this.handler = handler; 
this.token = token; 
} 
public String execute(File...files) { 
InputStream inputStream = null; 
HttpURLConnection urlConnection = null; 
FileInputStream fileInput = null; 
DataOutputStream requestStream = null; 
handler.sendEmptyMessage(50); 
try { 
// open connection 
URL url = new URL(requestURL.replace(\"{token}\", this.token)); 
urlConnection = (HttpURLConnection) url.openConnection(); 
// create random boundary 
Random random = new Random(); 
byte[] randomBytes = new byte[16]; 
random.nextBytes(randomBytes); 
String boundary = Base64.encodeToString(randomBytes, Base64.NO_WRAP); 
/* for POST request */ 
urlConnection.setDoOutput(true); 
urlConnection.setDoInput(true); 
urlConnection.setUseCaches(false); 
urlConnection.setRequestMethod(\"POST\"); 
long size = (files[0].length() / 1024); 
if(size >= 1000) { 
handler.sendEmptyMessage(-150); 
return \"error\"; 
} 
// 构建Entity form 
urlConnection.setRequestProperty(\"Connection\", \"Keep-Alive\"); 
urlConnection.setRequestProperty(\"Content-Type\", \"multipart/form-data;boundary=\" + boundary); 
urlConnection.setRequestProperty(\"Cache-Control\", \"no-cache\"); 
// never try to chunked mode, you need to set a lot of things 
// if(size > 400) { 
// urlConnection.setChunkedStreamingMode(0); 
// } 
// else { 
// urlConnection.setFixedLengthStreamingMode((int)files[0].length()); 
// } 
// end comment by zhigang on 2016-01-19 
/* upload file stream */ 
fileInput = new FileInputStream(files[0]); 
requestStream = new DataOutputStream(urlConnection.getOutputStream()); 
String nikeName = \"myfile\"; 
requestStream = new DataOutputStream(urlConnection.getOutputStream()); 
requestStream.writeBytes(\"--\" + boundary + CRLF); 
requestStream.writeBytes(\"Content-Disposition: form-data; name=\\\"\" + nikeName + \"\\\"; filename=\\\"\" + files[0].getName() + \"\\\"\"+ CRLF); 
requestStream.writeBytes(\"Content-Type: \" + getMIMEType(files[0]) + CRLF); 
requestStream.writeBytes(CRLF); 
// 写图像字节内容 
int bytesRead; 
byte[] buffer = new byte[8192]; 
handler.sendEmptyMessage(50); 
while((bytesRead = fileInput.read(buffer)) != -1) { 
requestStream.write(buffer, 0, bytesRead); 
} 
requestStream.flush(); 
requestStream.writeBytes(CRLF); 
requestStream.flush(); 
requestStream.writeBytes(\"--\" + boundary + \"--\" + CRLF); 
requestStream.flush(); 
fileInput.close(); 
// try to get response 
int statusCode = urlConnection.getResponseCode(); 
if (statusCode == 200) { 
inputStream = new BufferedInputStream(urlConnection.getInputStream()); 
String imageuuId = HttpUtil.convertInputStreamToString(inputStream); 
Log.i(\"image-uuid\", \"uploaded image uuid : \" + imageuuId); 
handler.sendEmptyMessage(50); 
return imageuuId; 
} 
} catch (Exception e) { 
e.printStackTrace(); 
} finally { 
if (inputStream != null) { 
try { 
inputStream.close(); 
} catch (IOException e) { 
e.printStackTrace(); 
} 
} 
if(requestStream != null) { 
try { 
requestStream.close(); 
} catch (IOException e) { 
e.printStackTrace(); 
} 
} 
if(fileInput != null) { 
try { 
fileInput.close(); 
} catch (IOException e) { 
e.printStackTrace(); 
} 
} 
if (urlConnection != null) { 
urlConnection.disconnect(); 
} 
} 
handler.sendEmptyMessage(50); 
return null; 
} 
private String getMIMEType(File file) { 
String fileName = file.getName(); 
if(fileName.endsWith(\"png\") || fileName.endsWith(\"PNG\")) { 
return \"image/png\"; 
} 
else { 
return \"image/jpg\"; 
} 
} 
}