Servlet form data to mySQL DB

Question

Hi,
I am creating a registration page for a small web app. I have been looking online and cant find much on how to send form data from a servlet to the appropriate table in my mySQL database. I have already designed my DB and know pretty much how to establish a connection to my DB. Any suggestions? Thanks for the help!

Answer 1

Google for jdbc tutorial.
I'd write a servlet that getParameter()'s the values, checks they are ok (-> redirect to error JSP page if not), then does the JDBC call, finally shows a "thanks" JSP. Put the JDBC stuff in a separate class, not in the servlet, so you can test it with a small main() function (or junit, but you don't have to learn everything at once, google for junit later.)
If you want to be buzzword compatible, write a class:
class RegistrationInfo
    private String name, password;
    boolean parse(HttpServletRequest, HttpServletResponse) {
        // Parse from request.
        // If bad parameters, redirect to error and return false.
        // Alternately, you can make parse() into a sort of a "factory": static RegistrationInfo parse()
    public void insert() { ...insert this using JDBC... }
}With the above bit as "model", JSP as "view", and the servlet as "controller", you are MVC right there. Some people like to separate the JDBC stuff to its own class; do that if appropriate (useful if you need to support several SQL dialects, sort of non-OO otherwise (flame me! flame me!)).