src/main/java/controller/StudentServlet.java - dev7 - ihaverak/persons

src/main/java/controller/StudentServlet.java
64 строки3 KB
ihaverak
лаба 6
23 май 2026, 01:07
23 май 2026, 01:07a2ad7fb
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 domain.Student;
import exception.DAOException;
import dao.GroupDbDAO;
import dao.StudentDbDAO;

@WebServlet("/student")
public class StudentServlet extends HttpServlet {
    private static final long serialVersionUID = 1L;

    protected void doGet(HttpServletRequest request, HttpServletResponse response) 
            throws ServletException, IOException {
        try {
            StudentDbDAO dao = new StudentDbDAO();
            GroupDbDAO groupDao = new GroupDbDAO();
            List<Student> students = dao.findAll();
            List<Group> groups = groupDao.findAll();
            request.setAttribute("students", students);
            request.setAttribute("groups", groups);
        } catch (DAOException e) {
            e.printStackTrace();
        }
        request.getRequestDispatcher("/views/student.jsp").forward(request, response);
    }

    protected void doPost(HttpServletRequest request, HttpServletResponse response) 
            throws ServletException, IOException {
        try {
            StudentDbDAO dao = new StudentDbDAO();
            
            // Получаем параметры из формы
            String firstName = request.getParameter("firstname");
            String lastName = request.getParameter("lastname");
            String phone = request.getParameter("phone");
            String email = request.getParameter("email");
            String groupIdStr = request.getParameter("groupId");
            
            // Проверяем, что все поля заполнены
            if (firstName != null && lastName != null && groupIdStr != null) {
                Long groupId = Long.parseLong(groupIdStr);
                
                // Находим группу по ID
                GroupDbDAO groupDao = new GroupDbDAO();
                Group group = groupDao.findById(groupId);
                
                Student newStudent = new Student(firstName, lastName, phone, email, groupId, group);
                Long index = dao.insert(newStudent);
                System.out.println("Студент добавлен, ID: " + index);
            }
        } catch (DAOException | NumberFormatException e) {
            e.printStackTrace();
        }
        doGet(request, response);
    }
}