Create controller for handling crud request

grails/grails-app/controllers/com/baeldung/grails/StudentController.groovy

@@ -0,0 +1,30 @@
+package com.baeldung.grails
+
+class StudentController {
+
+    StudentService studentService
+
+    static allowedMethods = [save: "POST", update: "PUT", delete: "DELETE"]
+
+    def index() {
+        respond studentService.list()
+    }
+
+    def show(Long id) {
+        respond studentService.get(id)
+    }
+
+    def create() {
+        respond new Student(params)
+    }
+
+    def save(Student student) {
+        studentService.save(student)
+        redirect action:"index", method:"GET"
+    }
+
+    def delete(Long id) {
+        studentService.delete(id)
+        redirect action:"index", method:"GET"
+    }
+}