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Code:



 

 import java.io.*;

import javax.servlet.*;

import javax.servlet.http.*;

import java.util.*;

import java.util.zip.*;



public class unzip extends HttpServlet

{

public void service( HttpServletRequest _req, HttpServletResponse _res)

throws ServletException, IOException

     {

          String strArchive = _req.getParameter( "archive" );

          String strFile = _req.getParameter( "file" );

          if ( strArchive != null && strArchive.length() != 0 &&

                strFile != null && strFile.length() != 0 )

          {

               unzipFile( _req.getRealPath(strArchive), strFile, _res );

          }

          else

               _res.setStatus( HttpServletResponse.SC_NO_CONTENT );

     }



     private void unzipFile( String _strArchive, String _file,

HttpServletResponse _res ) throws IOException

     {

          ZipFile zF = new ZipFile( _strArchive );



          ZipEntry zE = zF.getEntry( _file.toUpperCase() );



          _res.setContentType( "text/html" );

          PrintStream    Out = new PrintStream( _res.getOutputStream() );

          DataInputStream In = new DataInputStream( zF.getInputStream( zE ) );



          String LineIn;

          while ( (LineIn=In.readLine()) != null )

               Out.println( LineIn );



          zF.close();

          Out.flush();

     }

}



/**

*   Java Servlets by Example

*   Alan R. Williamson

*   http://manning.com/books/williamson

*   ISBN: 188477766X

*/