Question regrading uploading file on Flex and reading the on Java server

Question

Hello
I am using Java on the server side and i am uploading a file using file reference on the client side using adobe flex 3 and passing it to the server side using http post and i am having trouble saving the file to database. I am also using hibernate, springframework, Jboss server and Mysql 5 database this is my flex code. I know for a fact that it is hitting the servlet page so i am just can't read the file.
private function startUpload():void
                    if (_arrUploadFiles.length > 0) {
                         disableUI();
                         listFiles.selectedIndex = _numCurrentUpload;
                         scrollFiles();
                         var sendVars:URLVariables = new URLVariables();
                         sendVars.action = "upload";
                         var request:URLRequest = new URLRequest();
                         request.data = sendVars;
                    request.url = _strUploadUrl;
                    request.method = URLRequestMethod.POST;
                    _refUploadFile = new FileReference();
                    _refUploadFile = listFiles.selectedItem.file;
                    _refUploadFile.addEventListener(ProgressEvent.PROGRESS, onUploadProgress);
                         _refUploadFile.addEventListener(Event.COMPLETE, onUploadComplete);
                    refUploadFile.addEventListener(IOErrorEvent.IOERROR, onUploadIoError);
                         refUploadFile.addEventListener(SecurityErrorEvent.SECURITYERROR, onUploadSecurityError);
                    _refUploadFile.upload(request, "file", false);
This is my java code and i have tried so many different ways of getting this file but have hit a brick wall and i have no other ideas
package com.file.exchange.service;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.xml.sax.InputSource;
import java.io.*;
import java.sql.Blob;
import com.file.exchange.vo.Files;
import java.util.Date;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.io.IOException;
import java.io.PrintWriter;
import java.io.File;
import java.util.Enumeration;
public class FileUpload extends FileBaseService
     private static final String CONTENT_TYPE = "text/xml; charset=utf-8";
     @Override
     protected String getXmlFromOperation(HttpServletRequest request,HttpServletResponse response) throws Exception
          //ServletOutputStream servletOutputStream = response.getOutputStream();
          //Object fileObject = new Object(response.getOutputStream().);
          //InputStream is = new InputStream() ;
          //InputStreamReader input = new InputStreamReader(request.getInputStream());
          //BufferedReader buffer = new BufferedReader(input);
          DateFormat dateFormat = new SimpleDateFormat("yyyy/MM/dd HH:mm:ss");
          Date date = new Date();
          String data = "hello world";
          String id = "1";//getCharacterDataFromElement(vID);
          String name = String.valueOf(request.getAttributeNames());//getCharacterDataFromElement(vname);
          String type = ".txt";//getCharacterDataFromElement(vtype);
          String size = "5555";//Long.toString(fileObject.length());//getCharacterDataFromElement(vsize);
          Blob content = org.hibernate.Hibernate.createBlob(data.getBytes());//fisFile);//data.getbytes[]
          String date_uploaded = dateFormat.format(date);
          Files file = getFileDao().uploadFile(Integer.parseInt(id), name, type, Integer.parseInt(size), content, date_uploaded);
          return file.toXml();
}

Answer 1

You need to parse the request as multipart/form-data.
Maybe [http://commons.apache.org/fileupload/|http://commons.apache.org/fileupload/] can help.