Подключаем Freemarker

src/main/java/kinosearch/kinosearch3/webpp/SpringConfig.java

@@ -8,6 +8,9 @@ import org.springframework.beans.factory.annotation.Value;
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
 import org.springframework.context.annotation.PropertySource;
+import org.springframework.web.servlet.ViewResolver;
+import org.springframework.web.servlet.view.freemarker.FreeMarkerConfigurer;
+import org.springframework.web.servlet.view.freemarker.FreeMarkerViewResolver;
 
 @Configuration
 @PropertySource("classpath:/application.properties")
@@ -16,4 +19,19 @@ public class SpringConfig {
     public WebApp webapp(@Value("${webapp.host}") String host, @Value("${webapp.port}") int port) {
         return new WebApp(host, port);
     }
+
+    @Bean
+    public ViewResolver viewResolver() {
+        FreeMarkerViewResolver viewResolver = new FreeMarkerViewResolver();
+        viewResolver.setCache(true);
+        viewResolver.setSuffix(".ftl");
+        return viewResolver;
+    }
+
+    @Bean
+    public FreeMarkerConfigurer freemarkerConfig() {
+        FreeMarkerConfigurer freeMarkerConfigurer = new FreeMarkerConfigurer();
+        freeMarkerConfigurer.setTemplateLoaderPath("classpath:/kinosearch/kinosearch3/webpp/");
+        return freeMarkerConfigurer;
+    }
 }

src/main/java/kinosearch/kinosearch3/webpp/WebAppController.java

@@ -4,16 +4,30 @@
  */
 package kinosearch.kinosearch3.webpp;
 
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.RequestMapping;
 import org.springframework.web.bind.annotation.RequestMethod;
-import org.springframework.web.bind.annotation.ResponseBody;
+
+import javax.servlet.http.HttpServletResponse;
+import java.io.IOException;
 
 @Controller
 public class WebAppController {
+    private final Logger logger = LoggerFactory.getLogger(WebAppController.class);
+
     @RequestMapping(value = "/", method = RequestMethod.GET)
-    @ResponseBody
     public String hello() {
-        return "hello...?";
+        return "index";
+    }
+
+    @RequestMapping(value = "/favicon.ico")
+    public void favicon(HttpServletResponse response) {
+        try {
+            response.sendError(404);
+        } catch (IOException e) {
+            logger.error("favicon 404", e);
+        }
     }
 }