That's pretty easy in Spring MVC: Just declare a HttpServletRequest argument in the controller method and use the getParameter() method to retrieve parameter value from URL query string (GET) or from HTML form (POST).
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Use the spring form tag libs to bind your properties to an object. Spring will then take your form fields and turn that into the object you are expecting. If you are just trying to get parameters you can use the @RequestParam annotation. I suggest you have a look at this entire section of the ref docs for more information.