How to create an link in HTML that will also send data to java backend?

Question

I have a page call view_main and view_course. I use the logged in details to get data from the database and display it to the view_main page. Afterward the user can click the links generated in the view_main page and be forwarded to view_course page and here is my problem, how do I forward the page to view_course and forward the courseID as well for me to get the data from the database to display it with the view_course servlet?

I tried this but it doesn't work.

Part of view_main HTML code

 <#list courses as course>
            <div class = "carousel-tile">
                <form action="view_course" method="post">

                <button type="submit">
                <input type="hidden" name="courseID" value=${course.kid}>
                <h4>${course.kid}  ${course.name}</h4>
                <p>${course.description}</p>
                </button>
            </div>
        </#list>

Java viewMainServlet doGet

    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

        try(RegisterStore registerStore = new RegisterStore()){
            User user = (User) request.getSession().getAttribute("user");
            List<Course> courses =  registerStore.getRegisteredCourses(user.getUid());
            List<Course> availableCourses =  registerStore.getNonRegisteredCourses(user.getUid());
            registerStore.complete();
            request.setAttribute("numberOfColumns", courses.size());
            request.setAttribute("availableCourses", availableCourses);
            request.setAttribute("courses", courses);
        } catch (Exception e){
            throw new StoreException(e);
        }
        request.getRequestDispatcher("/view_main.ftl").forward(request, response);

    }

question from:https://stackoverflow.com/questions/66067771/how-to-create-an-link-in-html-that-will-also-send-data-to-java-backend

Answer 1

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