Please help me to write a file from applet to server with a servlet.

Question

In an applet the client elaborates a string and stores it in the variable of the name "line"
I would Like to write the string "line" in the file myfile.txt on the server.
I am in an applet trying to make the URLconnection to a servlet.
The part of the applet which calls the servlet is the following:
private void writeToSer(String line)
try
URL u = new URL("http://192.168.1.103:8180/servlet/ScriviFileServletFor1?stringa="+line);
HttpURLConnection urlConn = (HttpURLConnection)u.openConnection();
catch(IOException ioe)
JOptionPane.showMessageDialog(null,"IO Exception ","attenzione",JOptionPane.ERROR_MESSAGE );
the code of the servlet is the following:
import java.io.*;
import java.io.File;
import javax.servlet.*;
import javax.servlet.http.*;
public class ScriviFileServletFor1 extends HttpServlet {
public void doGet (HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
//read the parameters
String string = request.getParameter("stringa");
try {
File file = new File("/home/icurrado/myfile.txt");
FileWriter out = new FileWriter(file);
out.write(string);
out.close();
catch (Exception e) {
e.printStackTrace();
When I call the servlet from the bar of the URL with :
http://localhost:8180/servlet/ScriviFileServletFor1?stringa=prova
It works and writes the string "prova" in the file "/home/icurrado/myfile.txt".
When I call the servlet from the applet it doesn't work and it doesn't write the string in the file.
What is wrong or is missing ?
Please help me.

Answer 1

You dont need to go through the URL mechanism.
From an Applet you can directly save the file on the server at destinated location.
You can look for "Uploader Applet" in google.