how to upload files to server using JSP ?

please tell me any method to upload files to server plus is there any JSP component for uploading files

hi u can try uploading the files using this...

import java.util.Enumeration;
import java.util.Hashtable;
import java.util.Vector;
import java.io.IOException;
import java.io.File;
import java.io.PrintWriter;
import javax.servlet.ServletConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletContext;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpServlet;
import stec.servlet.http.MultiPartForm;
import stec.servlet.http.FileUpload;
public class FileUploadServlet extends HttpServlet
{
private static final int KB = 1024;
private static final int DEFAULT_MAX_CONTENT_LENGTH = 1024 * KB;
private static int max_content_length;
private static String default_charset;
private static String default_language;
public void init(ServletConfig _config) throws ServletException
{
super.init(_config);
String sValue = _config.getInitParameter("max_content_length");
if(sValue == null)
{
max_content_length = DEFAULT_MAX_CONTENT_LENGTH;
}
else
{
try
{
max_content_length = Integer.parseInt(sValue);
}
catch(NumberFormatException ex)
{
max_content_length = DEFAULT_MAX_CONTENT_LENGTH; // [mjg] ignore
}
}
default_charset = _config.getInitParameter("default_charset");
default_language = _config.getInitParameter("default_language");
}
public void doPost(HttpServletRequest _request, HttpServletResponse _response) throws ServletException, IOException
{
String charset;
if(default_charset == null)
{
String accept_charset = _request.getHeader("Accept-Charset");
if(accept_charset == null)
{
charset = null;
}
else
{
int offset = accept_charset.indexOf(',');
if(offset == -1)
{
charset = accept_charset.trim();
}
else
{
charset = accept_charset.substring(0, offset).trim();
}
}
}
else
{
charset = default_charset;
}
String content_type = "text/html";
if(charset != null)
{
content_type = content_type + "; charset=" + charset;
}
_response.setContentType(content_type);
String language;
if(default_language == null)
{
String accept_language = _request.getHeader("Accept-Language");
if(accept_language == null)
{
language = null;
}
else
{
int offset = accept_language.indexOf(',');
if(offset == -1)
{
language = accept_language.trim();
}
else
{
language = accept_language.substring(0, offset).trim();
}
}
}
else
{
language = default_language;
}
if(language != null)
{
_response.setHeader("Content-Language", language);
}
PrintWriter writer = _response.getWriter();
try
{
ServletContext context = getServletContext();
String basedir = context.getRealPath("c:/");
File fh = new File(basedir);
fh.mkdirs();
Hashtable ht = MultiPartForm.parse(_request, fh.getCanonicalPath(), max_content_length, charset);
String key;
Vector v;
Object obj;
String sValue;
byte[] bValue;
FileUpload fileUpload;
writer.println("<html>");
writer.println("<head><title>File Upload Servlet</title></head>");
writer.println("<body>");
writer.println("<h1>File Upload Servlet</h1>");
writer.println("<table border=1>");
writer.println("<tr>");
writer.println("<th>");
writer.println("Key");
writer.println("</th>");
writer.println("<th>");
writer.println("Data");
writer.println("</th>");
writer.println("</tr>");
Enumeration e = ht.keys();
while(e.hasMoreElements())
{
writer.println("<tr>");
key = (String)e.nextElement();
writer.println("<td>");
writer.println(key);
writer.println("</td>");
writer.println("<td>");
v = (Vector)ht.get(key);
for(int i = 0; i < v.size(); i++)
{
obj = v.elementAt(i);
if(obj instanceof FileUpload)
{
fileUpload = (FileUpload)obj;
sValue = fileUpload.getRemoteFilePath();
writer.println("remote file path: [" + (((sValue = fileUpload.getRemoteFilePath()) == null) ? "" : sValue) + "]<br>");
writer.println("local file path: [" + (((sValue = fileUpload.getLocalFilePath()) == null) ? "" : sValue) + "]<br>");
writer.println("content type: [" + (((sValue = fileUpload.getContentType()) == null) ? "" : sValue) + "]<br>");
}
else
{
writer.println((String)obj + "<br>");
}
}
writer.println("</td>");
writer.println("</tr>");
}
writer.println("</table>");
writer.println("</body>");
writer.println("</html>");
}
catch(Exception ex)
{
throw new ServletException(ex.getMessage());
}
}
public String getServletInfo()
{
return "FileUploadServlet";
}
}