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run dos commands through servlet

madhuri akhi

Joined: Sep 18, 2006
Posts: 24
am running the winbach commands through sevlet with help of convert doctool.
i worte the below code.but am not getting any result.

package com.nanna;

import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class ServletEx extends HttpServlet {

public ServletEx() {
public void destroy() {
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {

PrintWriter out = response.getWriter();
String name=(String)request.getParameter("file1");

String osName = System.getProperty("os.name" );

String[] cmd = new String[3];

int j=name.length();

String name1=name.substring(0,j-3);

if( osName.equals( "Windows XP" ) )
cmd[0] = "cmd.exe" ;
cmd[1] = "/C" ;
cmd[2] = "ConvertDoc /S"+name+" /F9 /T "+ name1+"TXT /C12";

else if( osName.equals( "Windows 95" ) )
cmd[0] = "command.com" ;
cmd[1] = "/C" ;
cmd[2] = name;

Runtime rt = Runtime.getRuntime();
out.println("Execing " + cmd[0] + " " + cmd[1]
+ " " + cmd[2]);
Process proc = rt.exec(cmd);
// any error message?
StreamGobbler errorGobbler = new
StreamGobbler(proc.getErrorStream(), "ERROR");

// any output?
StreamGobbler outputGobbler = new
StreamGobbler(proc.getInputStream(), "OUTPUT");

// kick them off

// any error???
int exitVal = proc.waitFor();
out.println("ExitValue: " + exitVal);
} catch (Throwable t)

private String subString(String name, String string) {
return null;

public void init() throws ServletException {
// Put your code here

* Created on Sep 25, 2006
* TODO To change the template for this generated file go to
* Window - Preferences - Java - Code Style - Code Templates
package com.nanna;

import java.io.*;
public class StreamGobbler extends Thread{
InputStream is;
String type;

StreamGobbler(InputStream is, String type)
this.is = is;
this.type = type;

public void run()
InputStreamReader isr = new InputStreamReader(is);
BufferedReader br = new BufferedReader(isr);
String line=null;
while ( (line = br.readLine()) != null)
System.out.println(type + ">" + line);
} catch (IOException ioe)
i got this below out put but not any result

Execing cmd.exe /C ConvertDoc /SD:\Program Files\Apache Software Foundation\Tomcat 5.0\webapps\BEL.doc /F9 /T D:\Program Files\Apache Software Foundation\Tomcat 5.0\webapps\BEL.TXT /C12 ExitValue: 1

is their any modifications require.giveme replay to me
Manuel Moons
Ranch Hand

Joined: Mar 05, 2002
Posts: 229
Is the convertdoc tool in the path of your system?

What I mean to say is: When you start a dos-prompt and you type in convertdoc. Is the command known? If must be known to your webserver. So this means it should be in the path of the webserver (via the webserver startup batch-file or via the system path).
madhuri akhi

Joined: Sep 18, 2006
Posts: 24
i need convertion of file one format to another format
like pdf to doc
doc to pdf
so i got one result through one tool and it is working
but is their any possible is their without tool
or any winbatch script is their
it will be working on web application

am waiting for your reply
Manuel Moons
Ranch Hand

Joined: Mar 05, 2002
Posts: 229
I'm sorry. I can't quite understand your problem!

You are trying to do conversions from pdf to doc and vice-versa? Ok

And I know you are trying to do this in your servlet. Right!

So what's next?

When you have succesfully transformed your document to another format (so you generated a new file) you will have to write the generated document to the browser using the servlet outputstream. (So just read the generated file using File IO), set the correct content type of the servlet outputstream (on the response object call setContentType)and write the file to the client (once again using the response object but now use the getOutputStream method).
I agree. Here's the link: http://aspose.com/file-tools
subject: run dos commands through servlet
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