Replace usage of WebMvcConfigurerAdapter

Closes gh-8964

spring-boot-samples/spring-boot-sample-atmosphere/src/main/java/sample/atmosphere/SampleAtmosphereApplication.java

@@ -33,7 +33,7 @@ import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
 import org.springframework.core.Ordered;
 import org.springframework.web.servlet.config.annotation.ViewControllerRegistry;
-import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;
+import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
 
 @SpringBootConfiguration
 @EnableAutoConfiguration
@@ -60,7 +60,7 @@ public class SampleAtmosphereApplication {
 	}
 
 	@Configuration
-	static class MvcConfiguration extends WebMvcConfigurerAdapter {
+	static class MvcConfiguration implements WebMvcConfigurer {
 
 		@Override
 		public void addViewControllers(ViewControllerRegistry registry) {

spring-boot-samples/spring-boot-sample-traditional/src/main/java/sample/traditional/config/WebConfig.java

@@ -23,13 +23,13 @@ import org.springframework.web.servlet.DispatcherServlet;
 import org.springframework.web.servlet.config.annotation.DefaultServletHandlerConfigurer;
 import org.springframework.web.servlet.config.annotation.EnableWebMvc;
 import org.springframework.web.servlet.config.annotation.ViewControllerRegistry;
-import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;
+import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
 import org.springframework.web.servlet.view.InternalResourceViewResolver;
 
 @EnableWebMvc
 @ComponentScan
 @Configuration
-public class WebConfig extends WebMvcConfigurerAdapter {
+public class WebConfig implements WebMvcConfigurer {
 
 	@Override
 	public void addViewControllers(ViewControllerRegistry registry) {

spring-boot-samples/spring-boot-sample-web-method-security/src/main/java/sample/security/method/SampleMethodSecurityApplication.java

@@ -35,11 +35,11 @@ import org.springframework.security.web.util.matcher.AntPathRequestMatcher;
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.GetMapping;
 import org.springframework.web.servlet.config.annotation.ViewControllerRegistry;
-import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;
+import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
 
 @SpringBootApplication
 @EnableGlobalMethodSecurity(securedEnabled = true)
-public class SampleMethodSecurityApplication extends WebMvcConfigurerAdapter {
+public class SampleMethodSecurityApplication implements WebMvcConfigurer {
 
 	@Controller
 	protected static class HomeController {

spring-boot-samples/spring-boot-sample-web-secure-custom/src/main/java/sample/web/secure/custom/SampleWebSecureCustomApplication.java

@@ -31,11 +31,11 @@ import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.GetMapping;
 import org.springframework.web.bind.annotation.RequestMapping;
 import org.springframework.web.servlet.config.annotation.ViewControllerRegistry;
-import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;
+import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
 
 @SpringBootApplication
 @Controller
-public class SampleWebSecureCustomApplication extends WebMvcConfigurerAdapter {
+public class SampleWebSecureCustomApplication implements WebMvcConfigurer {
 
 	@GetMapping("/")
 	public String home(Map<String, Object> model) {

spring-boot-samples/spring-boot-sample-web-secure-github/src/main/java/sample/web/secure/github/SampleGithubSecureApplication.java

@@ -19,11 +19,11 @@ package sample.web.secure.github;
 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
 import org.springframework.boot.autoconfigure.security.oauth2.client.EnableOAuth2Sso;
-import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;
+import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
 
 @SpringBootApplication
 @EnableOAuth2Sso
-public class SampleGithubSecureApplication extends WebMvcConfigurerAdapter {
+public class SampleGithubSecureApplication implements WebMvcConfigurer {
 
 	public static void main(String[] args) throws Exception {
 		SpringApplication.run(SampleGithubSecureApplication.class, args);

spring-boot-samples/spring-boot-sample-web-secure-jdbc/src/main/java/sample/web/secure/jdbc/SampleWebSecureJdbcApplication.java

@@ -34,11 +34,11 @@ import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.GetMapping;
 import org.springframework.web.bind.annotation.RequestMapping;
 import org.springframework.web.servlet.config.annotation.ViewControllerRegistry;
-import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;
+import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
 
 @SpringBootApplication
 @Controller
-public class SampleWebSecureJdbcApplication extends WebMvcConfigurerAdapter {
+public class SampleWebSecureJdbcApplication implements WebMvcConfigurer {
 
 	@GetMapping("/")
 	public String home(Map<String, Object> model) {

spring-boot-samples/spring-boot-sample-web-secure/src/main/java/sample/web/secure/SampleWebSecureApplication.java

@@ -31,11 +31,11 @@ import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.GetMapping;
 import org.springframework.web.bind.annotation.RequestMapping;
 import org.springframework.web.servlet.config.annotation.ViewControllerRegistry;
-import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;
+import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
 
 @SpringBootApplication
 @Controller
-public class SampleWebSecureApplication extends WebMvcConfigurerAdapter {
+public class SampleWebSecureApplication implements WebMvcConfigurer {
 
 	@GetMapping("/")
 	public String home(Map<String, Object> model) {