I have used oreillys multipartrequest and it working fine. Please refer to the code I have used. I am givig the code only for the servlet that uploads the file and not the html form which does call the servlet...

See below...

import java.net.*;
import java.sql.*;
import java.awt.*;

import java.io.*;
import javax.servlet.http.*;
import javax.servlet.*;
import java.util.*;
import com.oreilly.servlet.MultipartRequest;
import com.javaexchange.dbConnectionBroker.*;


public class ImageUpLoad extends HttpServletJXGB{
Connection cx = null;
Statement st;
ResultSet rs;
Image img;
int id;
String filename;
MultipartRequest multi;
public void init(ServletConfig config)  throws ServletException
  {
   try
   {
     super.init(config);
   }
   catch(Exception e) 
	{
	System.out.println(e); 
	}	
}


public void doPost(HttpServletRequest req, HttpServletResponse res) throws IOException, ServletException{
res.setContentType("text/html");
PrintWriter out =res.getWriter();
try{
		try{
		  cx = myBroker.getConnection();  
		 st=cx.createStatement();
		}
		catch(Exception e){
		System.err.println(e);
		}

String id="";

try{
	 multi =new MultipartRequest(req,"absolute path to server directory",5*1024*1024);
	}
	catch(Exception e)
	{	
	out.println("xception multi:"+e);
	}

Enumeration enum=multi.getParameterNames();
while(enum.hasMoreElements()){
String name=(String)enum.nextElement();
String value=multi.getParameter(name);
//out.println("name="+name);
//out.println("value="+value);
id=value;
}
//o//ut.println("
Files
");
Enumeration files=multi.getFileNames();
	while(files.hasMoreElements())
	{
		String name=(String)files.nextElement();
		 filename=multi.getFilesystemName(name);
		String type=multi.getContentType(name);
		File f= multi.getFile(name);
		//out.println("name="+name);
		//out.println("filename="+filename);
		//out.println("type="+type);
			if(f !=null)
			{
				//out.println("length:="+f.length());
				//out.println();
			}
	}
		System.out.println(id);	
		String query="";
		//String str="c:\testimages"+filename;
		
		
		 query="update male_mating set image_path='"+filename+"' where id='"+id+"'";
		

		st.executeUpdate(query);
		//System.out.println(str);


}
	
    catch(Exception e)
	{
	System.out.println("e:"+e);
	}
	 finally {
            try{if(st != null) {st.close();}} catch(SQLException e1){};
            
            // The connection is returned to the Broker
		myBroker.freeConnection(cx);
        }
        
       // out.close();
        
    }
}