ANN: Tutorial Series: Industrial-Strength BC4J

Question

Available 3/26/03
http://otn.oracle.com/sample_code/tutorials/bc4jvsm/bc4jvsmtoc.htm
This series of tutorials uses the Virtual Shopping Mall sample application to demonstrate programming techniques that take advantage of features of Business Components for Java (BC4J), Oracle's standards-based, server-side framework for creating scalable, high-performance J2EE applications. While describing parts of the larger application, each tutorial is self-contained, and each explains how to use a technique or perform a task.
The application enables vendors to set up online shops, customers to browse through the shops, and a system administrator to approve and reject requests for new shops and maintain lists of shop categories. OTN developers used Oracle9i JDeveloper and the Oracle Business Components for Java (BC4J) framework to build the application.

Answer 1

o.k i managed to get rid of the exceptions
you need to copy the contents of /jakata-struts/lib to
vsm-bc4j/classes
and yes my struts-common path is set.
in your install instructions you could mention that errors go into:
VSM-BC4J-oc4j-app.log
it will same us a load of time, for tracking errors.
also get them to re-write the scripts that you have to run, so that you do not have to keep typing in the paths, but instead the paths are set in the scripts.( we can modify them)
it will also show people new to the app. what you are talking about, and which paths
moving right along:
2 more questions.
1. as an example how secure is this app.?
is it a good way to implement security for a web site.?
also you could mention what code is kept on the server and what is sent to the local client, perhaps in the code files, and for god sake get the programmers to comment their code more.
2. O.K one more possible bug.( running from jdeveloper)
when i select "sign in" from the title screen, i get sent to the login screen.
when i enter the password & user name.
i get redirected to :
"/BC4JVSM/null", which does not exist
it appears to be in "login.jsp" in "vsmwebapp.jpr"
request.getAttribute("Home") is returning null.
i have re-written the code to:
String tail =(String)request.getAttribute("Home");
String url = request.getContextPath()+"/"+tail;
if((tail==null)||(tail.equalsIgnoreCase("null")))
url = request.getContextPath()+"/"+UIController.getInstance().getUI("DEFAULT","LOGIN");
session.invalidate();
response.sendRedirect(url);
which traps the error but does not fix it.
where should i get redirected to?, and where does the "Home" variable get set?
steve