Servlet在服务器端获取复选框属性？

Question

我在项目中使用servlet。

这是代码：

 public PrintWriter showBorrowed(HttpServletResponse response, String name, List<Book> books) throws IOException {

        PrintWriter out = response.getWriter();
        startPartial(out, name);
        out.println("<form action=\"srvReturnBooks\" method=\"post\">");
        for (int i = 0; i < books.size(); i++) {
            out.println("<tr>");
            Book b = books.get(i);
            out.println("<td>" + b.getTitle() + "</td>");
            out.println("<td>" + b.getIsbn() + "</td>");
            out.println("<td>" + b.getAuthorName() + "</td>");
            out.println("<td>" + b.getPublishDate() + "</td>");
            out.println("<td><input type=\"checkbox\" data-studentId=\"" + b.getid() + "\" name=\"checkbox\"></td>");
            out.println("</tr>");
        }
        out.println("<input type=\"submit\" name=\"btnReturn\"  value=\"Return Book\"/>");
        out.println("</form>");
        endPartial(out);
        return out;
    }

单击按钮提交后，将触发此功能：

protected void processRequest(HttpServletRequest request, HttpServletResponse response)
        throws ServletException, IOException {

    response.setContentType("text/html;charset=UTF-8");
    htmlHelper = new HTMLHelper();
    String[] checked = request.getParameterValues("checkbox");
    htmlHelper.showMessage(response, "Returned - Thank you!");
}   

通过此行：

String[] checked = request.getParameterValues("checkbox");

我获得了所有选中的复选框，但是我还需要获取每个复选框的data-studentId属性值。

知道我如何为每个复选框获取ata-studentId属性吗？