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To create a controller for a JSP page, you typically use a servlet that handles incoming HTTP requests. This servlet processes the request, interacts with any necessary business logic or data models, and then forwards the request and relevant data to the JSP page using a RequestDispatcher. You can set attributes in the request scope to pass data to the JSP, and finally, return the response by calling request.getRequestDispatcher("yourPage.jsp").forward(request, response);. This separation of concerns helps maintain a clear architecture between the presentation layer and business logic.

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