package com.oreilly.jent.servlets;
/**
* In general, you may use the code in this book in your programs and
* documentation. You do not need to contact us for permission unless
* you're reproducing a significant portion of the code. For example,
* writing a program that uses several chunks of code from this book does
* not require permission. Selling or distributing a CD-ROM of examples
* from O'Reilly books does require permission. Answering a question by
* citing this book and quoting example code does not require permission.
* Incorporating a significant amount of example code from this book into
* your product's documentation does require permission.
*
* We appreciate, but do not require, attribution. An attribution usually
* includes the title, author, publisher, and ISBN. For example:
*
* "Java Enterprise in a Nutshell, Third Edition,
* by Jim Farley and William Crawford
* with Prakash Malani, John G. Norman, and Justin Gehtland.
* Copyright 2006 O'Reilly Media, Inc., 0-596-10142-2."
*
* If you feel your use of code examples falls outside fair use or the
* permission given above, feel free to contact us at
* permissions@oreilly.com.
*/
import java.io.BufferedReader;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.UnavailableException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
public class FileServlet extends HttpServlet {
public void doGet(HttpServletRequest req, HttpServletResponse resp)
throws ServletException, IOException {
File r;
FileReader fr;
BufferedReader br;
try {
r = new File(req.getParameter("filename"));
fr = new FileReader(r);
br = new BufferedReader(fr);
if(!r.isFile( )) { // Must be a directory or something else
resp.sendError(HttpServletResponse.SC_NOT_FOUND);
return;
}
}
catch (FileNotFoundException e) {
resp.sendError(HttpServletResponse.SC_NOT_FOUND);
return;
}
catch (SecurityException se) { // Be unavailable permanently
throw(new UnavailableException("Servlet lacks appropriate privileges."));
}
resp.setContentType("text/html");
PrintWriter out = resp.getWriter( );
String text;
while( (text = br.readLine( )) != null)
out.println(text);
br.close( );
}
}
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