• Status: Solved
  • Priority: Medium
  • Security: Public
  • Views: 259
  • Last Modified:

use passworded jsp page to get files

Hey i want to have a jsp page where user can type in a login/password,  the jsp page will then just do a simple if(password="blabla") to check access. Now if the password is correct, the jsp page should allow the user (or just send it to the user?) to download a zip file.  My question is how do i do the part where jsp gets the file.  Can someone provide me with the code.   So basically

1)jsp check password
2) if correct password grab file and send it to user to download
3) the file should be in WEB-INF directory so people cant just type in the url and download it.

thanks!

gaga
0
gagaliya
Asked:
gagaliya
  • 5
1 Solution
 
objectsCommented:
use a download servlet something like:

public class Download extends HttpServlet
{
       public void doGet(HttpServletRequest req ,HttpServletResponse res) throws IOException,ServletException
       {
             doPost(req, res);
       }
       
       public void doPost(HttpServletRequest req ,HttpServletResponse res) throws IOException,ServletException
       {
        res.setContentType("application/octet-stream" + "; name=\"" + filename + "\"");
        res.setHeader("Content-Disposition","attachment; filename=" + filename +";");
        ServletOutputStream outputstream = res.getOutputStream();
        BufferedInputStream inputstream = new BufferedInputStream(new FileInputStream(downloadFile));
               
        int data;

        byte[] buffer = new byte[4096];
        while((data = inputstream.read(buffer))!=-1)
        {
            outputstream.write(buffer, 0, data);
        }
        inputstream.close();
        outputstream.close();
    }
}
0
 
objectsCommented:
you just need to add the file details, plus do the password check.
let me know if you need a hand
0
 
gagaliyaAuthor Commented:
hey objects,

can you post the jsp version? once again same problem:P i dont have access to the app server so cant deploy new servlets. But jsp can access the WEB-INF directory? because i remember normal html pages is restricted from accessing the WEB-INF directory.  thanks!

gaga
0
Cloud Class® Course: Microsoft Windows 7 Basic

This introductory course to Windows 7 environment will teach you about working with the Windows operating system. You will learn about basic functions including start menu; the desktop; managing files, folders, and libraries.

 
objectsCommented:
jsp's are meant for returning text ( typically html) and not binary content.
0
 
objectsCommented:
try something like:

<%@ page import = "java.util.*, java.io.*" %>
<%
        response.setContentType("application/octet-stream" + "; name=\"" + filename + "\"");
        response.setHeader("Content-Disposition","attachment; filename=" + filename +";");
        OutputStream outputstream = response.getOutputStream();
        BufferedInputStream inputstream = new BufferedInputStream(new FileInputStream(downloadFile));
               
        int data;

        byte[] buffer = new byte[4096];
        while((data = inputstream.read(buffer))!=-1)
        {
            outputstream.write(buffer, 0, data);
        }
        inputstream.close();
%>
0
 
objectsCommented:
0
Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.

Join & Write a Comment

Featured Post

Free Tool: Subnet Calculator

The subnet calculator helps you design networks by taking an IP address and network mask and returning information such as network, broadcast address, and host range.

One of a set of tools we're offering as a way of saying thank you for being a part of the community.

  • 5
Tackle projects and never again get stuck behind a technical roadblock.
Join Now