Fix customizer for windows tests

JettyServerCustomizers beans do not get picked up automatically in 2.1.x

See gh-15553

spring-boot-samples/spring-boot-sample-jetty-jsp/src/test/java/sample/jetty/jsp/SampleWebJspApplicationTests.java

@@ -24,7 +24,8 @@ import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.boot.test.context.SpringBootTest;
 import org.springframework.boot.test.context.SpringBootTest.WebEnvironment;
 import org.springframework.boot.test.web.client.TestRestTemplate;
-import org.springframework.boot.web.embedded.jetty.JettyServerCustomizer;
+import org.springframework.boot.web.embedded.jetty.JettyServletWebServerFactory;
+import org.springframework.boot.web.server.WebServerFactoryCustomizer;
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
 import org.springframework.http.HttpStatus;
@@ -59,10 +60,12 @@ public class SampleWebJspApplicationTests {
 		// To allow aliased resources on Concourse Windows CI (See gh-15553) to be served
 		// as static resources.
 		@Bean
-		public JettyServerCustomizer jettyServerCustomizer() {
-			return (server) -> {
+		public WebServerFactoryCustomizer<JettyServletWebServerFactory> jettyServerCustomizer() {
+			return (factory) -> {
+				factory.addServerCustomizers((server) -> {
 					ContextHandler handler = (ContextHandler) server.getHandler();
 					handler.addAliasCheck(new ContextHandler.ApproveAliases());
+				});
 			};
 		}
 

spring-boot-tests/spring-boot-integration-tests/spring-boot-server-tests/src/test/java/com/example/JettyServerCustomizerConfig.java

@@ -18,12 +18,13 @@ package com.example;
 
 import org.eclipse.jetty.server.handler.ContextHandler;
 
-import org.springframework.boot.web.embedded.jetty.JettyServerCustomizer;
+import org.springframework.boot.web.embedded.jetty.JettyServletWebServerFactory;
+import org.springframework.boot.web.server.WebServerFactoryCustomizer;
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
 
 /**
- * {@link JettyServerCustomizer} that approves all aliases (Used for Windows CI on
+ * {@link WebServerFactoryCustomizer} that approves all aliases (Used for Windows CI on
  * Concourse).
  *
  * @author Madhura Bhave
@@ -32,10 +33,12 @@ import org.springframework.context.annotation.Configuration;
 public class JettyServerCustomizerConfig {
 
 	@Bean
-	public JettyServerCustomizer jettyServerCustomizer() {
-		return (server) -> {
+	public WebServerFactoryCustomizer<JettyServletWebServerFactory> jettyServerCustomizer() {
+		return (factory) -> {
+			factory.addServerCustomizers((server) -> {
 				ContextHandler handler = (ContextHandler) server.getHandler();
 				handler.addAliasCheck(new ContextHandler.ApproveAliases());
+			});
 		};
 	}