Thanks Geeta. I am Perl,C++ web developer switching to Java and I know about
CGI etc but I did not realise that java had a special comparison method for
strings. I was using == when I should have used String.equals("").
Kh�rt Williams
President
Williams Inter@ctive, Inc.
+1 (732) 422-1570
+1 (732) 241-8667 (Cellular)
http://www.williamsinteractive.com
[EMAIL PROTECTED]
-----Original Message-----
From: Geeta Ramani [EMAIL PROTECTED]
Sent: Mon, 7 Aug 2000 11:09:48 -0400
To: [EMAIL PROTECTED]
Subject: Re: [No Subject]
Khurt:
Make sure your URL has a querystring var called "page" with value "init"... As
in
"/servlet/SimpleApp?page=init".
If you want this servlet to work via a form, make sure you write a doPost method
(with essentailly the same functionality)
If you already have taken care of the above, you should I think make the
following
test:
if (page.equals("init")) instead of the "== test that you have.
Geeta
khurt louis williams wrote:
> I wrote this very simple servlet to take one argument from the URL ( page )
and
> display the corresponding page. However, I am having trouble with the flow
> control logic. page== "init" always evaluates to false. Can someone explain
to
> me what I am doing incorrectly.
> Setup is Windows NT Workstation (SP3), Apache, Apache JServ, JDK1.3, JSDK2.0
>
> The source follows:
>
> import javax.servlet.http.*;
> import javax.servlet.*;
> import java.io.*;
>
> public class SimpleApp extends HttpServlet {
>
> public void displayPage ( PrintWriter out , String filename ) {
> String page;
> try {
> RandomAccessFile inFile = new RandomAccessFile(
> "D\\web\\htdocs\\simpleApp\\" + filename,"r");
> while( (page = inFile.readLine()) != null ) {
> out.print(page);
> }
> inFile.close();
> }
> catch(FileNotFoundException exception) {
> out.println("File " + filename + " not found!");
> }
> catch(IOException exception) {
> out.println("Error opening file " + filename + " for
reading!");
> }
> }
> public void doGet(HttpServletRequest request, HttpServletResponse
response)
> throws ServletException, IOException {
> // get an PrintWriter from the response object
> PrintWriter out = response.getWriter();
> // prepare the response's content type
> response.setContentType("text/html");
> // get the page to display
> String page = request.getParameter("page");
>
> // print to the output stream!
> if( (page == "init" ) || (page == "Start Over" ) ) {
> displayPage( out , "index.html" );
> }
> if( page == "Confirm" ) {
> displayPage( out, "confirm.html") ;
> }
> if( page == "Done" ) {
> displayPage( out, "done.html" );
> }
> }
> }
>
> Kh�rt Williams
> President
> Williams Inter@ctive, Inc.
> +1 (732) 422-1570
> +1 (732) 241-8667 (Cellular)
> http://www.williamsinteractive.com
> [EMAIL PROTECTED]
> ___________________________________________________________________________
> Visit http://www.visto.com/info, your free web-based communications center.
> Visto.com. Life on the Dot.
>
> ___________________________________________________________________________
> To unsubscribe, send email to [EMAIL PROTECTED] and include in the body
> of the message "signoff SERVLET-INTEREST".
>
> Archives: http://archives.java.sun.com/archives/servlet-interest.html
> Resources: http://java.sun.com/products/servlet/external-resources.html
> LISTSERV Help: http://www.lsoft.com/manuals/user/user.html
___________________________________________________________________________
To unsubscribe, send email to [EMAIL PROTECTED] and include in the body
of the message "signoff SERVLET-INTEREST".
Archives: http://archives.java.sun.com/archives/servlet-interest.html
Resources: http://java.sun.com/products/servlet/external-resources.html
LISTSERV Help: http://www.lsoft.com/manuals/user/user.html
___________________________________________________________________________
Visit http://www.visto.com/info, your free web-based communications center.
Visto.com. Life on the Dot.
___________________________________________________________________________
To unsubscribe, send email to [EMAIL PROTECTED] and include in the body
of the message "signoff SERVLET-INTEREST".
Archives: http://archives.java.sun.com/archives/servlet-interest.html
Resources: http://java.sun.com/products/servlet/external-resources.html
LISTSERV Help: http://www.lsoft.com/manuals/user/user.html
