package jsp;

import java.io.*;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 * Servlet implementation class Download
 */
@WebServlet("/Download")
public class Download extends HttpServlet {
	private static final long serialVersionUID = 1L;
       
    /**
     * @see HttpServlet#HttpServlet()
     */
    public Download() {
        super();
        // TODO Auto-generated constructor stub
    }

    public void doGet( HttpServletRequest request,HttpServletResponse response) {  
        try {  
            
            File file = new File("./dt.jar");  
          
            String filename = file.getName();  
         
            @SuppressWarnings("unused")
			String ext = filename.substring(filename.lastIndexOf(".") + 1)  
                    .toUpperCase();  
      
          
            InputStream fis = new BufferedInputStream (new FileInputStream("./dt.jar"));  
            byte[] buffer = new byte[fis.available()];  
            fis.read(buffer);  
            fis.close();  
           
            response.reset();  
          
            response.addHeader("Content-Disposition", "attachment;filename="  
                    + new String(filename.getBytes()));  
            response.addHeader("Content-Length", "" + file.length());  
            OutputStream toClient = new BufferedOutputStream(  
                    response.getOutputStream());  
            response.setContentType("application/octet-stream");  
            toClient.write(buffer);  
            toClient.flush();  
            toClient.close();  
        } catch (IOException ex) {  
            ex.printStackTrace();  
        }  
        return ;  
    }  
    
    
    
    /**
	 * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
	 */
//	protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

//	}

	/**
	 * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
	 */
	protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		// TODO Auto-generated method stub
	}

}