File Upload, only work in server directory, PLS HELP!!

Question

hi all,
my sevlet program work only if the source file is in the server where tomcat is installed. Can I upload the file in pc's local harddisc?
The following is my code:
import sun.net.ftp.*;
import sun.net.*;
import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
public class xupload extends HttpServlet
     FtpClient ftpClient;
     public void closeConnect()
          try{ ftpClient.closeServer();
          catch (IOException ex) {System.out.println(ex);}
     public void doGet(HttpServletRequest req, HttpServletResponse res)
          String ftpip = req.getParameter("ftp");
          String ftpuser = req.getParameter("user");
          String ftppwd = req.getParameter("password");
          String source = req.getParameter("source");
          String target = req.getParameter("target");
          try{
               PrintWriter out = res.getWriter();
                    FtpClient client = new FtpClient();
                    client.openServer(ftpip);
                    client.login(ftpuser, ftppwd);
                    client.binary();
                    out.println(ftppwd);
                    try {
                              TelnetOutputStream os=client.put(target);
                              java.io.File file_in=new java.io.File(source);
                              out.println(file_in);
                              FileInputStream is=new FileInputStream(file_in);
                              byte[] bytes=new byte[1024];
                              int c;
                              while ((c=is.read(bytes))!=-1){ os.write(bytes,0,c); }
                                        is.close();
                                        os.close();
                    catch (IOException ex) {System.out.println(ex);}
                    client.closeServer();
          catch (Exception e) { System.out.println(e.getMessage()); }
     public void doPost(HttpServletRequest req, HttpServletResponse res)
}

Answer 1

java.io.File file_in=new java.io.File(source);This is just picking up a filename sent from the browser and loading it from the server's filesystem.
You actually need to have the client send the file to the server. Libraries such as Jakarta Commons FileUpload make this easy. See:
http://www.onjava.com/pub/a/onjava/2003/06/25/commons.html?page=last&x-order=date
http://jakarta.apache.org/commons/fileupload/using.html