Spring MVC 4 and Simple Ajax Call

To understand this tutorial, I assume that you are already aware with Spring MVC and how it works. I will demonstrate here a simple Ajax call in Spring MVC where form data are posted and sent to the controller. The output of the ajax call is plain string text.

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How to implement Heatmap on Websites using PHP, MySQL, jQuery and Ajax?

I was assigned a task when an Interviewer interviewed me and that was a Technical question. I was asked to design a system that can gather click data from a webpage and show it later in form of a Heatmap.

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