Open save dialogue box wehn run servlet program

Question

hi,
i m having one servlet file(Write_File.java).. in this prog i retrive some data form one table and write into one file(c:\\write.be).. its automatically stored tat file in server machine.. now what my issue is when i run Write_File.java, it sholud have to shows save dialogue box..
file name : Write_File.java
import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
import java.sql.*;
public class Write_File extends HttpServlet
     public void doGet(HttpServletRequest request, HttpServletResponse response) throws IOException, ServletException
          PrintWriter out = response.getWriter();
          //boolean header = true;
FileOutputStream fos = new FileOutputStream("c:\\write.be");
          try
               Class.forName("com.mysql.jdbc.Driver");
               Connection con = DriverManager.getConnection("jdbc:mysql://localhost:3306/cha_db","root","user");
               Statement stat = con.createStatement();
               ResultSet rs = stat.executeQuery("Select * from acc_ledger");
               ResultSetMetaData rs_meta = rs.getMetaData();
                    out.println(rs_meta.getColumnName(1)+"\t"+rs_meta.getColumnName(2));
                    fos.write((rs_meta.getColumnName(1)+"\t\t"+rs_meta.getColumnName(2)+"\r\n").getBytes());
                    fos.write(("--------------\t\t--------------\r\n").getBytes());
               while(rs.next())
                    fos.write((rs.getString(2)+"\t\t"+rs.getString(3)+"\r\n").getBytes());
               fos.write(("========\t\t========\r\n").getBytes());               
          catch(Exception e)
               out.println(e);
          fos.flush();
          fos.close();
pls solve this problem
by
senthilkumar
thnks in advance
Edited by: vishruta on Nov 16, 2007 3:02 AM

Answer 1

without passing the control to Servlet?Why?
In HTTP you can send the response only once.The application where i have this requirement is an old one. In the application, I have there are some screens, whose control never goes to Servlet.
TO be more precise, 2 pages one HTML and another JSP. And the file to be downloaded is created when JSP is called from HTML page. And there is no interaction with Servlet. The JSP inturn calls a method in Java file (which is not a Servlet) and gets all the details including the file to be downloaded.
I have used window.open() to download the file(in JSP) in order to have Open/Save dialogue box.
But the approach is working fine in Windows XP systems but not in Windows2000. In Win00 machines it is directly opening the file in popup without giving the user any option for Open/Save.
Please let me know your suggestion on this.
Thanks