servlets and guestbook

[summi]

hello
I am trying to run guestbook with the help of servlets.Servlet get the parameters of textfield and write those parameters in html file with the help of streams.I can run this servlet successfully when i give a path like"c:/guestbook.html".But same servlet does not work with tomcat when i give path as"

http://localhost:8080/guestbook.html"according

to the location of file.It also does not give any error. Just entries are not there. part of the servlet is like this:

try {
BufferedReader in4 =new BufferedReader(new StringReader(s2));
PrintWriter out1 =new PrintWriter(new BufferedWriter(new FileWriter("

http://localhost:8080/guestbook.html",

true)));
Can anybody suggest me the possible cause.Any help will be highly appreciated.
Smriti

 

[meadandale]

Well, there are a few things wrong with your approach.

First of all, having a servlet try to write to a URL context is somewhat off the mark. Also, I don't see any of the code where you actually write to the file. It'd help to see the rest of your code.

Usually in Tomcat, a webapp is in it's own context, say 'guestbook'. Putting things in the root context requires more planning then you have probably done. Therefore, it is more likely that you would want to do something like:

http://localhost:8080/guestbook/guestbook.html

You will have to setup the server.xml or create a deployment descriptor to do this.

In reality, however, you are better off using servlets to write to and present the HTML page dynamically, not having the servlet rewrite the HTML page each time you add a guestbook entry.

For an example of how to do this, check out MY guestbook @

http://www.cse.ucsd.edu/users/chudak

I wrote this using a combination of JSP and servlets. The servlet is simply a controller. The JSP's do the actual presentation work. Check out the web for the MVC (Model View Controller) pattern.

Regards,

Charles