Open a Local file from JSP

if you'd like to show the real path to the user, use simply an ftp server !

however, if you prefer a secure solution, so use a servlet:

example:

import java.io.BufferedInputStream;

import java.io.File;

import java.io.FileInputStream;

import java.io.IOException;

import javax.servlet.ServletException;

import javax.servlet.ServletOutputStream;

import javax.servlet.http.HttpServlet;

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;

public class SendWord extends HttpServlet {

public void doGet(HttpServletRequest request, HttpServletResponse response)

throws ServletException, IOException {

//get the 'file' parameter

String fileName = (String) request.getParameter("file");

if (fileName == null || fileName.equals(""))

throw new ServletException(

"Invalid or non-existent file parameter in SendWord servlet.");

// add the .doc suffix if it doesn't already exist

if (fileName.indexOf(".doc") == -1)

fileName = fileName + ".doc";

String wordDir = getServletContext().getInitParameter("word-dir");

if (wordDir == null || wordDir.equals(""))

throw new ServletException(

"Invalid or non-existent wordDir context-param.");

ServletOutputStream stream = null;

BufferedInputStream buf = null;

try {

stream = response.getOutputStream();

File doc = new File(wordDir + "/" + fileName);

response.setContentType("application/msword");

response.addHeader("Content-Disposition", "attachment; filename="

+ fileName);

response.setContentLength((int) doc.length());

FileInputStream input = new FileInputStream(doc);

buf = new BufferedInputStream(input);

int readBytes = 0;

while ((readBytes = buf.read()) != -1)

stream.write(readBytes);

} catch (IOException ioe) {

throw new ServletException(ioe.getMessage());

} finally {

if (stream != null)

stream.close();

if (buf != null)

buf.close();

}

}

public void doPost(HttpServletRequest request, HttpServletResponse response)

throws ServletException, IOException {

doGet(request, response);

}

}

hope that helps

java_2006a at 2007-7-29 12:54:44 >

Not sure whether this can be done in JavaScript given that it runs on the client machine, try the location = command. Not sure whether the browser security would prevent it as mentioned above.

If Javascript doesn't work you have to use a file upload field, and use an inputstream to send the file to the server and open it from there. You may be able to use a hidden file upload field and set it's value using Javascript onclick of a link, then process a file from a default local drive/directory and return the file to the browser all in one process but I've not tried it.

StrutFoola at 2007-7-29 12:54:44 >