I am posting the complete code to transfer image file.
Sending a file from Applet to Servlet
import java.awt.*;
import java.awt.event.*;
import java.net.*;
import java.io.*;
import javax.swing.*;
public class TestApplet extends JApplet implements ActionListener
{
JButton jbutton = null;
public void init()
{
jbutton = new JButton("Send file");
jbutton.addActionListener(this);
this.getContentPane().add(jbutton);
}
public void actionPerformed(ActionEvent ae)
{
if(ae.getSource() == jbutton)
{
try
{
File file = new File("C:\karthik.jpg");
FileInputStream in = new FileInputStream(file);
byte[] buf=new byte[in.available()];
int bytesread = 0;
String toservlet = "http://localhost:8080/servlet/MyServlet";
URL servleturl = new URL(toservlet);
URLConnection servletconnection = servleturl.openConnection();
servletconnection.setDoInput(true);
servletconnection.setDoOutput(true);
servletconnection.setUseCaches(false);
servletconnection.setDefaultUseCaches(false);
DataOutputStream out=new DataOutputStream(servletconnection.getOutputStream());
while( (bytesread = in.read( buf )) > -1 )
{
out.write( buf, 0, bytesread );
}
out.flush();
out.close();
in.close();
DataInputStream inputFromClient = new DataInputStream(servletconnection.getInputStream());
//get what you want from servlet
//.......
inputFromClient.close();
}
catch(Exception e)
{
e.printStackTrace();
}
}
}
}
import javax.servlet.*;
import javax.servlet.http.*;
import java.io.*;
public class MyServlet extends HttpServlet
{
public void doPost(HttpServletRequest req,HttpServletResponse res)
{
ServletContext sc = this.getServletContext();
try
{
String fileName = "karthik.jpg";
String path = sc.getRealPath(File.separator)+fileName;
File yourFile = new File(path);
FileOutputStream toFile = new FileOutputStream( yourFile );
DataInputStream fromClient = new DataInputStream( req.getInputStream() );
byte[] buff = new byte[1024];
int cnt = 0;
while( (cnt = fromClient.read( buff )) > -1 ) {
toFile.write( buff, 0, cnt );
}
toFile.flush();
toFile.close();
fromClient.close();
}
catch(Exception e)
{
e.printStackTrace();
}
}
}
//========================= www.karthikelango.in ===================================
