Problem..Sending Extra Parameter on Ajax Call

[Mark Reyes]

Hi All,

Good Day!
I wanted to add an extra parameter in all my ajax call. I saw the method, $.ajaxSetup but cant seem to make it work.
I basically have this, what I want is to send additional data on all subsequent ajax call

$(document).ready(function(){
	$.ajaxSetup({
		data:	"{ajaxCall=true}"
	});
});
$(document).ready(function(){
	$.getJSON('getPlantData.htm',{Plant: $("#Plant").val()}, function(data){
	}
}

I have my spring controller like below. Its an interceptor that distinguishes Ajax and Non-Ajax Call.

public class SessionCheckerInterceptor extends HandlerInterceptorAdapter {
	public boolean preHandle(HttpServletRequest request,
			HttpServletResponse response, Object handler) throws Exception {

		String strAjaxCall = ServletRequestUtils.getStringParameter(request,
				"ajaxCall");
		if (strAjaxCall != null) {
			HttpSession session = request.getSession();

			UserSessionVo voUser = (UserSessionVo) session
					.getAttribute(SESSION_USER_KEY);

			if (voUser == null) {
				// user session timeout
				response.sendError(401);
				return false;
			}
			return true;
		} else {
			//normal HTTP
		}
		return true;
	}
}

I am not sure, but why is that, it is not sending the extra parameter. Anything wrong in my understanding?

[Bear Bibeault]

The default values will only be used in the absence of another value, not merged into it.