JAVA-3541: Move spring-5-mvc into spring-web-modules

spring-web-modules/spring-5-mvc/src/main/java/com/baeldung/web/ResponseBodyEmitterController.java

@@ -0,0 +1,35 @@
+package com.baeldung.web;
+
+import com.baeldung.Constants;
+import java.util.Date;
+import java.util.concurrent.ExecutorService;
+import java.util.concurrent.Executors;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.MediaType;
+import org.springframework.http.ResponseEntity;
+import org.springframework.stereotype.Controller;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.servlet.mvc.method.annotation.ResponseBodyEmitter;
+
+@Controller
+public class ResponseBodyEmitterController {
+    private ExecutorService nonBlockingService = Executors.newCachedThreadPool();
+
+    @GetMapping(Constants.API_RBE)
+    public ResponseEntity<ResponseBodyEmitter> handleRbe() {
+        ResponseBodyEmitter emitter = new ResponseBodyEmitter();
+
+            nonBlockingService.execute(() -> {
+                try {
+                    emitter.send(Constants.API_RBE_MSG + " @ " + new Date(), MediaType.TEXT_PLAIN);
+                    emitter.complete();
+                } catch (Exception ex) {
+                      System.out.println(Constants.GENERIC_EXCEPTION);
+                      emitter.completeWithError(ex);
+                }
+            });
+
+            return new ResponseEntity(emitter, HttpStatus.OK);
+        }
+
+}