update to spring 5

spring-mvc-java/src/test/java/com/baeldung/htmlunit/TestConfig.java

@@ -1,10 +1,14 @@
 package com.baeldung.htmlunit;
 
+import javax.servlet.ServletContext;
+
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.ComponentScan;
 import org.springframework.context.annotation.Configuration;
 import org.springframework.web.servlet.ViewResolver;
 import org.springframework.web.servlet.config.annotation.EnableWebMvc;
+import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
 import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;
 import org.thymeleaf.spring4.SpringTemplateEngine;
 import org.thymeleaf.spring4.view.ThymeleafViewResolver;
@@ -13,8 +17,11 @@ import org.thymeleaf.templateresolver.ServletContextTemplateResolver;
 @Configuration
 @EnableWebMvc
 @ComponentScan(basePackages = { "com.baeldung.web.controller" })
-public class TestConfig extends WebMvcConfigurerAdapter {
+public class TestConfig implements WebMvcConfigurer {
 
+    @Autowired
+    private ServletContext ctx;
+    
     @Bean
     public ViewResolver thymeleafViewResolver() {
         final ThymeleafViewResolver viewResolver = new ThymeleafViewResolver();
@@ -25,7 +32,7 @@ public class TestConfig extends WebMvcConfigurerAdapter {
 
     @Bean
     public ServletContextTemplateResolver templateResolver() {
-        final ServletContextTemplateResolver templateResolver = new ServletContextTemplateResolver();
+        final ServletContextTemplateResolver templateResolver = new ServletContextTemplateResolver(ctx);
         templateResolver.setPrefix("/WEB-INF/templates/");
         templateResolver.setSuffix(".html");
         templateResolver.setTemplateMode("HTML5");