Support @name annotation on /actuator/configprops

Update `ConfigurationPropertiesReportEndpoint` so that supports
constructor parameters annotated with `@Name`.

Fixes gh-24713

Author: philwebb

spring-boot-project/spring-boot-actuator/src/main/java/org/springframework/boot/actuate/context/properties/ConfigurationPropertiesReportEndpoint.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2012-2020 the original author or authors.
+ * Copyright 2012-2021 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.
@@ -17,6 +17,7 @@
 package org.springframework.boot.actuate.context.properties;
 
 import java.lang.reflect.Constructor;
+import java.lang.reflect.Parameter;
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Collection;
@@ -58,12 +59,16 @@
 import org.springframework.boot.context.properties.ConfigurationProperties;
 import org.springframework.boot.context.properties.ConfigurationPropertiesBean;
 import org.springframework.boot.context.properties.ConstructorBinding;
+import org.springframework.boot.context.properties.bind.Name;
 import org.springframework.boot.context.properties.source.ConfigurationProperty;
 import org.springframework.boot.context.properties.source.ConfigurationPropertyName;
 import org.springframework.boot.origin.Origin;
 import org.springframework.context.ApplicationContext;
 import org.springframework.context.ApplicationContextAware;
+import org.springframework.core.DefaultParameterNameDiscoverer;
 import org.springframework.core.KotlinDetector;
+import org.springframework.core.ParameterNameDiscoverer;
+import org.springframework.core.annotation.MergedAnnotation;
 import org.springframework.core.annotation.MergedAnnotations;
 import org.springframework.core.annotation.MergedAnnotations.SearchStrategy;
 import org.springframework.util.ClassUtils;
@@ -384,6 +389,8 @@ public void serializeAsField(Object pojo, JsonGenerator jgen, SerializerProvider
 	 */
 	protected static class GenericSerializerModifier extends BeanSerializerModifier {
 
+		private static final ParameterNameDiscoverer PARAMETER_NAME_DISCOVERER = new DefaultParameterNameDiscoverer();
+
 		@Override
 		public List<BeanPropertyWriter> changeProperties(SerializationConfig config, BeanDescription beanDesc,
 				List<BeanPropertyWriter> beanProperties) {
@@ -398,11 +405,21 @@ public List<BeanPropertyWriter> changeProperties(SerializationConfig config, Bea
 			return result;
 		}
 
-		private boolean isCandidate(BeanDescription beanDesc, BeanPropertyWriter writer,
-				Constructor<?> bindConstructor) {
-			if (bindConstructor != null) {
-				return Arrays.stream(bindConstructor.getParameters())
-						.anyMatch((parameter) -> parameter.getName().equals(writer.getName()));
+		private boolean isCandidate(BeanDescription beanDesc, BeanPropertyWriter writer, Constructor<?> constructor) {
+			if (constructor != null) {
+				Parameter[] parameters = constructor.getParameters();
+				String[] names = PARAMETER_NAME_DISCOVERER.getParameterNames(constructor);
+				if (names == null) {
+					names = new String[parameters.length];
+				}
+				for (int i = 0; i < parameters.length; i++) {
+					String name = MergedAnnotations.from(parameters[i]).get(Name.class)
+							.getValue(MergedAnnotation.VALUE, String.class)
+							.orElse((names[i] != null) ? names[i] : parameters[i].getName());
+					if (name.equals(writer.getName())) {
+						return true;
+					}
+				}
 			}
 			return isReadable(beanDesc, writer);
 		}

spring-boot-project/spring-boot-actuator/src/test/java/org/springframework/boot/actuate/context/properties/ConfigurationPropertiesReportEndpointTests.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2012-2020 the original author or authors.
+ * Copyright 2012-2021 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.
@@ -34,6 +34,7 @@
 import org.springframework.boot.context.properties.ConstructorBinding;
 import org.springframework.boot.context.properties.EnableConfigurationProperties;
 import org.springframework.boot.context.properties.bind.DefaultValue;
+import org.springframework.boot.context.properties.bind.Name;
 import org.springframework.boot.origin.Origin;
 import org.springframework.boot.origin.OriginLookup;
 import org.springframework.boot.test.context.assertj.AssertableApplicationContext;
@@ -73,7 +74,7 @@ void descriptorWithJavaBeanBindMethodDetectsRelevantProperties() {
 	void descriptorWithValueObjectBindMethodDetectsRelevantProperties() {
 		this.contextRunner.withUserConfiguration(ImmutablePropertiesConfiguration.class).run(assertProperties(
 				"immutable",
-				(properties) -> assertThat(properties).containsOnlyKeys("dbPassword", "myTestProperty", "duration")));
+				(properties) -> assertThat(properties).containsOnlyKeys("dbPassword", "myTestProperty", "for")));
 	}
 
 	@Test
@@ -451,16 +452,16 @@ public static class ImmutableProperties {
 
 		private final String nullValue;
 
-		private final Duration duration;
+		private final Duration forDuration;
 
 		private final String ignored;
 
 		ImmutableProperties(@DefaultValue("123456") String dbPassword, @DefaultValue("654321") String myTestProperty,
-				String nullValue, @DefaultValue("10s") Duration duration) {
+				String nullValue, @DefaultValue("10s") @Name("for") Duration forDuration) {
 			this.dbPassword = dbPassword;
 			this.myTestProperty = myTestProperty;
 			this.nullValue = nullValue;
-			this.duration = duration;
+			this.forDuration = forDuration;
 			this.ignored = "dummy";
 		}
 
@@ -476,8 +477,8 @@ public String getNullValue() {
 			return this.nullValue;
 		}
 
-		public Duration getDuration() {
-			return this.duration;
+		public Duration getFor() {
+			return this.forDuration;
 		}
 
 		public String getIgnored() {