File Upload using Servlets

This code uploads a file to the Content manager(FileNet).

import java.io.File;
import java.io.FileWriter;
import java.io.PrintWriter;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.Hashtable;
import java.util.Iterator;
import java.util.List;

import org.apache.commons.fileupload.FileItem;
import org.apache.commons.fileupload.FileUploadException;
import org.apache.commons.fileupload.disk.DiskFileItemFactory;
import org.apache.commons.fileupload.servlet.ServletFileUpload;

import java.io.BufferedInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.URL;



public class FileUpLoad_Sample {
 File outFile = null;
 String fileName=null;
 int flag = 0;
 
 public IDataCapsule executeService(IDataCapsule dc)
  throws ActionException {
  String methodName = "ClaimInsertexecuteService";
  IDataCapsule reqDC = InputDCHelper.getRequestDataCapsule(dc);
  ClaimInsertAF pf = new ClaimInsertAF();
  pf = (ClaimInsertAF) reqDC.getObject(FWConstants.ACTION_FORM);
  HttpServletRequest req = (HttpServletRequest) pf.getReq();
  try {
   XMLReader xmlRdr = new XMLReader();
   FileRd f = new FileRd();
   System.out.println(f.printData("IIP_Config.xml"));
   Hashtable details =
    xmlRdr.parseXML(new File(f.printData("IIP_Config.xml")));
   HttpSession session = req.getSession(false);
   System.out.println("1");

   if (ServletFileUpload.isMultipartContent(req)) {
    ServletFileUpload sFup =
     new ServletFileUpload(new DiskFileItemFactory());

    try {
     List fileItemList = sFup.parseRequest(req);
     Iterator it = fileItemList.iterator();
     while (it.hasNext()) {
      FileItem fItem = (FileItem) it.next();
      if (fItem.isFormField()) {
       //This is used for other form elements like textboxes,DropDown etc.,
       String fname = fItem.getFieldName().trim();
       String fvalue = fItem.getString();
       session.setAttribute(fname, fvalue);
       
      } else {
       fileName = fItem.getName();
       if(fileName!="")
       {
       
       fileName =
        fileName.substring(
         fileName.lastIndexOf("\") + 1);
       outFile = new File(fileName);
       outFile.createNewFile();
       fItem.write(outFile);
       flag = 1;
       }
      }
     }
    } catch (FileUploadException e) {
     //Write error reporting code!
     e.printStackTrace();
    } catch (Exception e) {
     //Write error reporting code!
     e.printStackTrace();
    }
   } else {
    //Write error reporting code!
   }
  
   if (flag == 1) {

    AddDocument add_filenet = new AddDocument();
    System.out.println(outFile.getAbsolutePath());

    String doc_id =
     add_filenet.insertClaims(
             fileName,
      outFile.getAbsolutePath(),
      claim_no);
    System.out.println(doc_id);
    outFile.delete();
   }

  } catch (Exception e) {
   logger.logMethodBegin(e.toString());
   reqDC.addObject("Exception", e.toString());
   throw new ActionException(e);
  } finally {

  }

  return dc;

 }

}