feat(user): cursor pagnination

Author: chuminhhieu779

src/java/com/library/controller/book/BookListController.java

@@ -41,10 +41,24 @@ public BookListController() {
     protected void doGet(HttpServletRequest request, HttpServletResponse response)
             throws ServletException, IOException {
 
+        String cursorParam = request.getParameter("cursor");
+        String limitParam = request.getParameter("limit");
+
+        int cursor = (cursorParam == null) ? 0 : Integer.parseInt(cursorParam);
+        int limit = (limitParam == null) ? 20 : Integer.parseInt(limitParam);
+
         try {
-            List<Book> bookList = bookDao.getAllBook();
+
+            List<Book> bookList = bookDao.getBooksByCursor(cursor, limit);
+
+            int nextCursor = bookList.isEmpty() ? 0 : bookList.get(bookList.size() - 1).getBookID();
+
             request.setAttribute("bookList", bookList);
+            request.setAttribute("nextCursor", nextCursor);
+            request.setAttribute("limit", limit);
+
             request.getRequestDispatcher("/WEB-INF/views/book/booklist.jsp").forward(request, response);
+
         } catch (BookDataAccessException b) {
             logger.error("Error loading books", b);
         }

src/java/com/library/dao/BookDaoImpl.java

@@ -369,8 +369,8 @@ public List<Book> getBooksByCursor(int cursor, int limit) {
 
         try (Connection conn = DBConnection.getInstance().getConnection(); PreparedStatement ps = conn.prepareStatement(sql)) {
 
-            ps.setInt(1, cursor);    // ID cuối của trang trước (0 = trang đầu)
-            ps.setInt(2, limit);     // số bản ghi muốn lấy
+            ps.setInt(1, cursor);    
+            ps.setInt(2, limit);    
 
             try (ResultSet rs = ps.executeQuery()) {
                 while (rs.next()) {

web/WEB-INF/views/book/booklist.jsp

@@ -321,7 +321,7 @@
                                 <i class="fa-solid fa-heart"></i> Favorite 
                             </a> 
                             <a href="${pageContext.request.contextPath}/user/setting" class="dropdown-item">
-                               <i class="fa-solid fa-gear"></i> Setting
+                                <i class="fa-solid fa-gear"></i> Setting
                             </a>    
                             <a href="${pageContext.request.contextPath}/LogOut" class="dropdown-item logout">
                                 <i class="fa-solid fa-right-from-bracket"></i> Logout
@@ -347,6 +347,16 @@
                 </c:forEach>
             </div>
         </div>
+        <!-- Pagination Cursor -->
+        <div class="pagination" style="margin: 30px auto; text-align: center;">
+            <c:if test="${nextCursor > 0}">
+                <a href="${pageContext.request.contextPath}/book/list?cursor=${nextCursor}&limit=${limit}"
+                   style="padding: 12px 20px; background: #4f46e5; color: white;
+                   border-radius: 8px; text-decoration:none; font-weight:600;">
+                    Load More <i class="fa-solid fa-chevron-down"></i>
+                </a>
+            </c:if>
+        </div>
 
         <!-- ======= FOOTER ======= -->
         <footer class="footer">