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dev7
src/main/java/controller/EditGroupServlet.java
50 строк
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ihaverak
лаба 7
23 май 2026, 01:19
23 май 2026, 01:19
e0b7bac
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package controller; import jakarta.servlet.ServletException; import jakarta.servlet.annotation.WebServlet; import jakarta.servlet.http.HttpServlet; import jakarta.servlet.http.HttpServletRequest; import jakarta.servlet.http.HttpServletResponse; import java.io.IOException; import java.util.List; import domain.Group; import exception.DAOException; import dao.GroupDbDAO; @WebServlet("/editgroup") public class EditGroupServlet extends HttpServlet { private static final long serialVersionUID = 1L; protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { try { GroupDbDAO dao = new GroupDbDAO(); List<Group> groups = dao.findAll(); request.setAttribute("groups", groups); String idStr = request.getParameter("id"); if (idStr != null) { Long id = Long.parseLong(idStr); Group group = dao.findById(id); request.setAttribute("groupEdit", group); } } catch (DAOException e) { e.printStackTrace(); } request.getRequestDispatcher("/views/editgroup.jsp").forward(request, response); } protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { try { GroupDbDAO dao = new GroupDbDAO(); Long id = Long.parseLong(request.getParameter("id")); String groupName = request.getParameter("groupName"); Group group = new Group(id, groupName); dao.update(group); } catch (DAOException e) { e.printStackTrace(); } response.sendRedirect(request.getContextPath() + "/group"); } }