Fix casing of ServerProperties.Jetty.Accesslog.FORMAT

Closes gh-45884

Author: snicoll

spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/web/ServerProperties.java

@@ -1261,7 +1261,7 @@ public static class Accesslog {
 			/**
 			 * Log format.
 			 */
-			private FORMAT format = FORMAT.NCSA;
+			private Format format = Format.NCSA;
 
 			/**
 			 * Custom log format, see org.eclipse.jetty.server.CustomRequestLog. If
@@ -1302,11 +1302,11 @@ public void setEnabled(boolean enabled) {
 				this.enabled = enabled;
 			}
 
-			public FORMAT getFormat() {
+			public Format getFormat() {
 				return this.format;
 			}
 
-			public void setFormat(FORMAT format) {
+			public void setFormat(Format format) {
 				this.format = format;
 			}
 
@@ -1361,7 +1361,7 @@ public void setIgnorePaths(List<String> ignorePaths) {
 			/**
 			 * Log format for Jetty access logs.
 			 */
-			public enum FORMAT {
+			public enum Format {
 
 				/**
 				 * NCSA format, as defined in CustomRequestLog#NCSA_FORMAT.

spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/web/embedded/JettyWebServerFactoryCustomizer.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2012-2024 the original author or authors.
+ * Copyright 2012-2025 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.
@@ -33,6 +33,7 @@
 import org.eclipse.jetty.server.RequestLogWriter;
 
 import org.springframework.boot.autoconfigure.web.ServerProperties;
+import org.springframework.boot.autoconfigure.web.ServerProperties.Jetty.Accesslog.Format;
 import org.springframework.boot.cloud.CloudPlatform;
 import org.springframework.boot.context.properties.PropertyMapper;
 import org.springframework.boot.web.embedded.jetty.ConfigurableJettyWebServerFactory;
@@ -201,7 +202,7 @@ private String getLogFormat(ServerProperties.Jetty.Accesslog properties) {
 		if (properties.getCustomFormat() != null) {
 			return properties.getCustomFormat();
 		}
-		if (ServerProperties.Jetty.Accesslog.FORMAT.EXTENDED_NCSA.equals(properties.getFormat())) {
+		if (Format.EXTENDED_NCSA.equals(properties.getFormat())) {
 			return CustomRequestLog.EXTENDED_NCSA_FORMAT;
 		}
 		return CustomRequestLog.NCSA_FORMAT;