How to create new account using servlets

I want to know how can I create new account using servlets in post 开发者_开发知识库method?

I'm currently following MVC design pattern, and I want to know if I pass the required data to register new account from JSP page, then how can I get that data in post method? As request.getParameter() method returning me null. How can I know that post method is calling to create new account?

How can I pass all the relevant user information from servlets to model class for registering data to the database table?

If request.getParamter() returns null, then the problem needs to be solved somewhere else. Maybe wrong form encoding? Maybe wrong parameter name? It's basically not that hard. A HTML form like this in the JSP..

<form action="register" method="post">
    <input type="text" name="username">
    <input type="submit">
</form>

..in combination with a Servlet which is mapped in web.xml on an url-pattern of /register and the following in the doPost() method..

String username = request.getParameter("username");

..should just work. Then you just create a new model class, fill it with those values and pass it to the DAO class to persist it in the DB.

I suggest to get yourself through those excellent basic JSP/Servlet tutorials to get yourself started: http://courses.coreservlets.com/Course-Materials/csajsp2.html

You may also find this basic DAO tutorial useful, the 2nd part exist of a basic JSP/Servlet example handling a simple use case of "Register user", exactly what you need.