Implement student page

src/main/java/id/ac/ui/cs/advprog/tutorial0/controller/StudentController.java

+package id.ac.ui.cs.advprog.tutorial0.controller;
+
+import id.ac.ui.cs.advprog.tutorial0.exception.DuplicateStudentNameException;
+import id.ac.ui.cs.advprog.tutorial0.model.Student;
+import id.ac.ui.cs.advprog.tutorial0.service.StudentService;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Controller;
+import org.springframework.ui.Model;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.ModelAttribute;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+
+import java.util.List;
+
+@Controller
+@RequestMapping("/student")
+public class StudentController {
+    @Autowired
+    private StudentService service;
+
+    @GetMapping("/list")
+    public String studentListPage(Model model) {
+        List<Student> allStudents = service.findAll();
+        model.addAttribute("students", allStudents);
+        return "studentList";
+    }
+
+    @GetMapping("/create")
+    public String createStudentPage(Model model) {
+        Student student = new Student();
+        model.addAttribute("student", student);
+        return "createStudent";
+    }
+
+    @PostMapping("/create")
+    public String createStudentPost(@ModelAttribute Student student, Model model) {
+        try {
+            service.create(student);
+        } catch (DuplicateStudentNameException e) {
+            model.addAttribute("error", e);
+            model.addAttribute("student", student);
+            return "createStudent";
+        }
+        return "redirect:list";
+    }
+}