I've got two questions about user introduced data error handling...
First, where is the best place to detect these errors? javascript or
servlet code?
For example, if I have a field where users put their telephone number,
where should I check if the data is correct?
It's faster with JavaScript, but servlet correctness would depend on the
HTML page.
I would like to know what solutions are you using.
second, I have two servlets, one (say dataServlet) generating a HTML
form and a second getting this form's data and making some jdbc
operations with them (say jdbcServlet). If there's a database error, I
would like to show the first HTML form with a message showing what
happened. At this moment I am generating the same HTML form with
jdbcServlet, but I think it should be easier (and more ellegant) to call
dataServlet's service(), but I would need to re-define
HttpServletRequest to add an 'error-cause' parameter. Is it possible to
make this? How?
Thanks in advance.
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