It's already the third time that i post the same question, please help me!

Question

I am writing a simple guestbook that is able to insert and fetch text and image from database and display them. There is a html that forms the parameters to this servlet, some text information such as "name", "address" and one picture. Insertion and fetching of text and images works sepearately, but when i combine them there is a conflict between "doGet" and "doPost". My text insertion only works with "doGet" (don't know why, but when i type "doPost" it does not work) while image insertion only works with "doPost" since i am using "Multipartrequest" to read the image.
Since i write "doGet" in my code, the exception is following
java.io.IOException: Posted content type isn't multipart/form-data
SQLB.doGet(SQLB.java:42)Following are the codes , please give me a hand, many thanks!!
the problem line that causes exception is marked with ////////////////////////////////// above in red color
import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
import java.util.*;
import java.awt.image.*;
import com.oreilly.servlet.*;
import java.awt.*;
import java.awt.event.*;
import java.text.*;
import com.sun.image.codec.jpeg.JPEGCodec;
import com.oreilly.servlet.ServletUtils;
import java.net.*;
import java.sql.*;
public class SQLB extends HttpServlet{
    Connection con;
    PreparedStatement pstmt=null;
    public void init(){
     //connection need url, username and password
     String url="jdbc:mysql://atlas.dsv.su.se/db_5974722";
     try{
         new com.mysql.jdbc.Driver();
         con = DriverManager.getConnection(url, "usr_5974722", "974722");
     }catch (Exception ex){}
    public void doGet(HttpServletRequest req,HttpServletResponse res)throws IOException, ServletException{
     //get the text fields information     
     String namn=req.getParameter("namn");
     String epost=req.getParameter("epost");
     String hemsida=req.getParameter("hemsida");
     String kommentSQLB.doGet(SQLB.java:42)ar=req.getParameter("kommentar");
     //get the pic as file
     MultipartRequest mreq=null;
     PreparedStatement pstmt1=null;
     PreparedStatement pstmt2=null;
     res.setContentType("text/html");
     String mime=null;
     File file=null;
     File dir = (File)getServletContext().getAttribute("javax.servlet.context.tempdir");
     mreq = new MultipartRequest(req, dir.getAbsolutePath(), 5000000);
     mime= mreq.getContentType("file");     
     file = mreq.getFile("file");
     Statement stmt=null;
     ResultSet rs=null;     
     //first save all the information to the database
     //then go through it and print out all the content
     //both tables have id as key
     try{
         new com.mysql.jdbc.Driver();
         //save the picture
         pstmt2 = con.prepareStatement("INSERT INTO picture(p,type) VALUES ( ?, ?)");
         FileInputStream fis = new FileInputStream(file);
         byte[] data=new byte[(int) file.length()];
         fis.read(data);
         fis.close();
         pstmt2.clearParameters();
         pstmt2.setBytes(1, data);
         //another way to insert blob
         //pstmt2.setBinaryStream(3,fis, (int)file.length());
         pstmt2.setString(2,mime);
         pstmt2.execute();
         //picture saving done
         //save other text information
         pstmt = con.prepareStatement("INSERT INTO guestbook (NAME,TIME,EPOST,HEMSIDA,KOMMENTAR) VALUES(?,?,?,?,?)");
         pstmt.clearParameters();
         pstmt.setString(1,namn);
         pstmt.setString(2,new java.util.Date().toString());
         pstmt.setString(3,epost);
         pstmt.setString(4,hemsida);
         pstmt.setString(5,kommentar);
         pstmt.execute();
         //text informatin saving done
         //pstmt1=con.prepareStatement("DELETE FROM picture");
         //pstmt1.execute();
         //print the guestbook information and invoke the SQLC servlet
         //to display picture
         String queryprint="SELECT * FROM guestbook";
         rs=pstmt.executeQuery(queryprint);
         PrintWriter out=res.getWriter();
         out.println("<HTML><HEAD><TITLE>guestbook</TITLE></HEAD>");
         out.println("<BODY>");
         while ( rs.next() ) {
          String name = rs.getString("id");
          out.println("TID:  "+ rs.getString("TIME"));
          out.println("<br>");
          out.println("FR�N: ");
          out.println("<a href=\"rs.getString(HEMSIDA)\">"+rs.getString("NAME")+"</a>");
          out.println("<br>");
          out.println("e-post");
          out.println("<a href=\"mailto:"+rs.getString("EPOST")+"\">"+rs.getString("EPOST")+"</a>");
          out.println("<br>");
          out.println("Kommentar:  "+rs.getString("KOMMENTAR"));
          out.println("<br><br><br>");
          out.println("<br>");
          out.println("<img src=\"http://localhost:8080/ip/servlet/SQLC?id=" + name+ "\">");
         out.println("</body>");
         out.println("</html>");
            rs.close();
         pstmt.close();
            con.close();
     catch (Exception e){
         e.printStackTrace();
}

Answer 1

do you send the mulitipart MIME type like this ?
<FORM action="youraction"
       enctype="multipart/form-data"
       method="post">