How To Pass A Javascript Variable To A Java Servlet?

I want to pass a javascript variable to a java servlet. I am developing a web application. This is my html code:

Some text

And this is what i write in

Solution 1:

The problem is you have the post method in your ajax and you are trying to get it in the doGet() of your servlet.

Use doPost or change the method to Get in your ajax.

Solution 2:

Try this:

public void doPost(HttpServletRequest request, HttpServletResponse response) 
   throws ServletException, IOException
{
    String myPostVar = request.getParameter("myPostVar");
    // ...
}