Create MessageController.java

spring-mvc-java/src/main/java/com/baeldung/web/controller/MessageController.java

@@ -0,0 +1,24 @@
+package com.baeldung.web.controller;
+
+import org.springframework.stereotype.Controller;
+import org.springframework.ui.Model;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestMethod;
+import org.springframework.web.bind.annotation.RequestParam;
+
+@Controller
+@RequestMapping("/message")
+public class MessageController {
+
+	@RequestMapping(value = "/showForm", method = RequestMethod.GET)
+	public String showForm() {
+		return "message";
+	}
+
+	@RequestMapping(value = "/processForm", method = RequestMethod.POST)
+	public String processForm(@RequestParam("message") final String message, final Model model) {
+		model.addAttribute("message", message);
+		return "message";
+	}
+
+}