Polish "Replace @Controller with @RestController"

See gh-1401

initializr-web/src/main/java/io/spring/initializr/web/controller/CommandLineMetadataController.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2012-2019 the original author or authors.
+ * Copyright 2012-2023 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -29,12 +29,12 @@ import org.springframework.http.HttpHeaders;
 import org.springframework.http.MediaType;
 import org.springframework.http.ResponseEntity;
 import org.springframework.http.ResponseEntity.BodyBuilder;
-import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.RequestHeader;
 import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
 
 /**
- * {@link Controller} that handles assistance for CLI support using a
+ * {@link RestController} that handles assistance for CLI support using a
  * {@link CommandLineHelpGenerator}.
  *
  * @author Stephane Nicoll

initializr-web/src/main/java/io/spring/initializr/web/controller/ProjectGenerationController.java

@@ -51,16 +51,16 @@ import org.apache.commons.logging.LogFactory;
 
 import org.springframework.http.HttpStatus;
 import org.springframework.http.ResponseEntity;
-import org.springframework.stereotype.Controller;
 import org.springframework.util.StringUtils;
 import org.springframework.web.bind.annotation.ExceptionHandler;
 import org.springframework.web.bind.annotation.ModelAttribute;
 import org.springframework.web.bind.annotation.RequestHeader;
 import org.springframework.web.bind.annotation.RequestMapping;
 import org.springframework.web.bind.annotation.RequestParam;
+import org.springframework.web.bind.annotation.RestController;
 
 /**
- * Base {@link Controller} that provides endpoints for project generation.
+ * Base {@link RestController} that provides endpoints for project generation.
  *
  * @param <R> the {@link ProjectRequest} type to use to bind request parameters
  * @author Stephane Nicoll

initializr-web/src/main/java/io/spring/initializr/web/controller/ProjectMetadataController.java

@@ -39,14 +39,13 @@ import org.springframework.http.CacheControl;
 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.ExceptionHandler;
 import org.springframework.web.bind.annotation.RequestMapping;
 import org.springframework.web.bind.annotation.RequestParam;
-import org.springframework.web.bind.annotation.ResponseBody;
+import org.springframework.web.bind.annotation.RestController;
 
 /**
- * {@link Controller} that exposes metadata and service configuration.
+ * {@link RestController} that exposes metadata and service configuration.
  *
  * @author Stephane Nicoll
  */

initializr-web/src/main/java/io/spring/initializr/web/controller/SpringCliDistributionController.java

@@ -26,7 +26,7 @@ import org.springframework.web.bind.annotation.RequestMapping;
  *
  * @author Stephane Nicoll
  */
-@RestController
+@Controller
 public class SpringCliDistributionController {
 
 	private final InitializrMetadataProvider metadataProvider;