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89 lines
4.1 KiB
89 lines
4.1 KiB
package web.servlet.student;
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import domain.Admin;
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import domain.SelectCourse;
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import domain.Student;
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import domain.Teacher;
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import service.StudentService;
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import service.impl.StudentServiceImpl;
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import javax.servlet.ServletException;
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import javax.servlet.annotation.WebServlet;
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import javax.servlet.http.HttpServlet;
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import javax.servlet.http.HttpServletRequest;
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import javax.servlet.http.HttpServletResponse;
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import javax.servlet.http.HttpSession;
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import java.io.IOException;
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import java.util.List;
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@WebServlet("/studentSelectCourseListServlet")
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public class StudentSelectCourseListServlet extends HttpServlet {
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// 处理POST请求
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protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
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// 设置请求编码为utf-8
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request.setCharacterEncoding("utf-8");
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// 获取当前会话
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HttpSession session = request.getSession();
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// 从会话中获取学生对象
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Student student= (Student)session.getAttribute("student");
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// 从会话中获取管理员对象
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Admin admin =(Admin)session.getAttribute("admin");
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//调用StudentService完成查询-
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StudentService studentService = new StudentServiceImpl();
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if (student != null && admin == null) {
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List<SelectCourse> selectcourses = studentService.findAllSelectCourse(student.getS_id());
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//将list存入request域-
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request.setAttribute("selectcourses",selectcourses);
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//转发到list.jsp-
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// 如果学生不为空，则跳转到学生选课列表页面
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request.getRequestDispatcher("/WEB-INF/student/studentSelectCourseList.jsp").forward(request,response);
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} else if (admin != null && student == null) {
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// 如果管理员不为空，学生为空，则查询所有学生的选课列表，并跳转到管理员查看所有学生选课列表页面
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List<SelectCourse> selectcourses = studentService.findSelectCourseAllStudent();
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request.setAttribute("selectcourses", selectcourses);
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request.getRequestDispatcher("/WEB-INF/admin/allStudentSelectCourseList.jsp").forward(request, response);
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} else {
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// 否则，跳转到错误页面
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request.getRequestDispatcher("error.jsp").forward(request, response);
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}
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}
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protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
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this.doPost(request,response);
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}
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}
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//public class StudentSelectCourseListServlet extends HttpServlet {
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// protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
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//
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// request.setCharacterEncoding("utf-8");
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// HttpSession session = request.getSession();
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// Student student= (Student)session.getAttribute("student");
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// Admin admin =(Admin)session.getAttribute("admin");
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//
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// //调用StudentService完成查询-
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// StudentService studentService = new StudentServiceImpl();
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// if (student != null && admin == null) {
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// List<SelectCourse> selectcourses = studentService.findAllSelectCourse(student.getS_id());
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// //将list存入request域-
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// request.setAttribute("selectcourses",selectcourses);
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// //转发到list.jsp-
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// request.getRequestDispatcher("/WEB-INF/student/studentSelectCourseList.jsp").forward(request,response);
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// } else if (admin != null && student == null) {
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// List<SelectCourse> selectcourses = studentService.findSelectCourseAllStudent();
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// request.setAttribute("selectcourses", selectcourses);
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// request.getRequestDispatcher("/WEB-INF/admin/allStudentSelectCourseList.jsp").forward(request, response);
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// } else {
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// request.getRequestDispatcher("error.jsp").forward(request, response);
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// }
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//
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//
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// }
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//
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// protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
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// this.doPost(request,response);
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// }
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//}
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