ObjectProvider over custom getBeanOrNull method

config/src/main/java/org/springframework/security/config/annotation/authentication/configuration/AuthenticationConfiguration.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2022 the original author or authors.
+ * Copyright 2002-2024 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.
@@ -28,7 +28,6 @@
 import org.springframework.aop.framework.ProxyFactoryBean;
 import org.springframework.aop.target.LazyInitTargetSource;
 import org.springframework.beans.factory.BeanFactoryUtils;
-import org.springframework.beans.factory.NoSuchBeanDefinitionException;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.context.ApplicationContext;
 import org.springframework.context.ConfigurableApplicationContext;
@@ -57,6 +56,7 @@
  * Exports the authentication {@link Configuration}
  *
  * @author Rob Winch
+ * @author Ngoc Nhan
  * @since 3.2
  *
  */
@@ -197,15 +197,6 @@ private AuthenticationManager getAuthenticationManagerBean() {
 		return lazyBean(AuthenticationManager.class);
 	}
 
-	private static <T> T getBeanOrNull(ApplicationContext applicationContext, Class<T> type) {
-		try {
-			return applicationContext.getBean(type);
-		}
-		catch (NoSuchBeanDefinitionException notFound) {
-			return null;
-		}
-	}
-
 	private static class EnableGlobalAuthenticationAutowiredConfigurer extends GlobalAuthenticationConfigurerAdapter {
 
 		private final ApplicationContext context;
@@ -330,12 +321,9 @@ private PasswordEncoder getPasswordEncoder() {
 			if (this.passwordEncoder != null) {
 				return this.passwordEncoder;
 			}
-			PasswordEncoder passwordEncoder = getBeanOrNull(this.applicationContext, PasswordEncoder.class);
-			if (passwordEncoder == null) {
-				passwordEncoder = PasswordEncoderFactories.createDelegatingPasswordEncoder();
-			}
-			this.passwordEncoder = passwordEncoder;
-			return passwordEncoder;
+			this.passwordEncoder = this.applicationContext.getBeanProvider(PasswordEncoder.class)
+				.getIfUnique(PasswordEncoderFactories::createDelegatingPasswordEncoder);
+			return this.passwordEncoder;
 		}
 
 		@Override

config/src/main/java/org/springframework/security/config/annotation/authentication/configuration/InitializeUserDetailsBeanManagerConfigurer.java

@@ -39,6 +39,7 @@
  * {@link PasswordEncoder} is defined will wire this up too.
  *
  * @author Rob Winch
+ * @author Ngoc Nhan
  * @since 4.1
  */
 @Order(InitializeUserDetailsBeanManagerConfigurer.DEFAULT_ORDER)
@@ -121,11 +122,7 @@ else if (userDetailsServices.size() > 1) {
 		 * component, null otherwise.
 		 */
 		private <T> T getBeanOrNull(Class<T> type) {
-			String[] beanNames = InitializeUserDetailsBeanManagerConfigurer.this.context.getBeanNamesForType(type);
-			if (beanNames.length != 1) {
-				return null;
-			}
-			return InitializeUserDetailsBeanManagerConfigurer.this.context.getBean(beanNames[0], type);
+			return InitializeUserDetailsBeanManagerConfigurer.this.context.getBeanProvider(type).getIfUnique();
 		}
 
 		/**

config/src/main/java/org/springframework/security/config/annotation/method/configuration/GlobalMethodSecurityConfiguration.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2022 the original author or authors.
+ * Copyright 2002-2024 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.
@@ -27,7 +27,6 @@
 import org.springframework.beans.BeansException;
 import org.springframework.beans.factory.BeanFactory;
 import org.springframework.beans.factory.BeanFactoryAware;
-import org.springframework.beans.factory.NoSuchBeanDefinitionException;
 import org.springframework.beans.factory.SmartInitializingSingleton;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.beans.factory.config.BeanDefinition;
@@ -84,6 +83,7 @@
  *
  * @author Rob Winch
  * @author Eddú Meléndez
+ * @author Ngoc Nhan
  * @since 3.2
  * @see EnableGlobalMethodSecurity
  * @deprecated Use {@link PrePostMethodSecurityConfiguration},
@@ -168,33 +168,28 @@ public void afterSingletonsInstantiated() {
 		catch (Exception ex) {
 			throw new RuntimeException(ex);
 		}
-		PermissionEvaluator permissionEvaluator = getSingleBeanOrNull(PermissionEvaluator.class);
+		PermissionEvaluator permissionEvaluator = getBeanOrNull(PermissionEvaluator.class);
 		if (permissionEvaluator != null) {
 			this.defaultMethodExpressionHandler.setPermissionEvaluator(permissionEvaluator);
 		}
-		RoleHierarchy roleHierarchy = getSingleBeanOrNull(RoleHierarchy.class);
+		RoleHierarchy roleHierarchy = getBeanOrNull(RoleHierarchy.class);
 		if (roleHierarchy != null) {
 			this.defaultMethodExpressionHandler.setRoleHierarchy(roleHierarchy);
 		}
-		AuthenticationTrustResolver trustResolver = getSingleBeanOrNull(AuthenticationTrustResolver.class);
+		AuthenticationTrustResolver trustResolver = getBeanOrNull(AuthenticationTrustResolver.class);
 		if (trustResolver != null) {
 			this.defaultMethodExpressionHandler.setTrustResolver(trustResolver);
 		}
-		GrantedAuthorityDefaults grantedAuthorityDefaults = getSingleBeanOrNull(GrantedAuthorityDefaults.class);
+		GrantedAuthorityDefaults grantedAuthorityDefaults = getBeanOrNull(GrantedAuthorityDefaults.class);
 		if (grantedAuthorityDefaults != null) {
 			this.defaultMethodExpressionHandler.setDefaultRolePrefix(grantedAuthorityDefaults.getRolePrefix());
 		}
 
 		this.defaultMethodExpressionHandler = this.objectPostProcessor.postProcess(this.defaultMethodExpressionHandler);
 	}
 
-	private <T> T getSingleBeanOrNull(Class<T> type) {
-		try {
-			return this.context.getBean(type);
-		}
-		catch (NoSuchBeanDefinitionException ex) {
-		}
-		return null;
+	private <T> T getBeanOrNull(Class<T> type) {
+		return this.context.getBeanProvider(type).getIfUnique();
 	}
 
 	private void initializeMethodSecurityInterceptor() throws Exception {
@@ -262,7 +257,7 @@ protected AccessDecisionManager accessDecisionManager() {
 			decisionVoters.add(new Jsr250Voter());
 		}
 		RoleVoter roleVoter = new RoleVoter();
-		GrantedAuthorityDefaults grantedAuthorityDefaults = getSingleBeanOrNull(GrantedAuthorityDefaults.class);
+		GrantedAuthorityDefaults grantedAuthorityDefaults = getBeanOrNull(GrantedAuthorityDefaults.class);
 		if (grantedAuthorityDefaults != null) {
 			roleVoter.setRolePrefix(grantedAuthorityDefaults.getRolePrefix());
 		}
@@ -373,7 +368,7 @@ public MethodSecurityMetadataSource methodSecurityMetadataSource() {
 			sources.add(new SecuredAnnotationSecurityMetadataSource());
 		}
 		if (isJsr250Enabled) {
-			GrantedAuthorityDefaults grantedAuthorityDefaults = getSingleBeanOrNull(GrantedAuthorityDefaults.class);
+			GrantedAuthorityDefaults grantedAuthorityDefaults = getBeanOrNull(GrantedAuthorityDefaults.class);
 			Jsr250MethodSecurityMetadataSource jsr250MethodSecurityMetadataSource = this.context
 				.getBean(Jsr250MethodSecurityMetadataSource.class);
 			if (grantedAuthorityDefaults != null) {

config/src/main/java/org/springframework/security/config/annotation/rsocket/RSocketSecurity.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2019-2021 the original author or authors.
+ * Copyright 2019-2024 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.
@@ -108,6 +108,7 @@
  * @author Luis Felipe Vega
  * @author Manuel Tejeda
  * @author Ebert Toribio
+ * @author Ngoc Nhan
  * @since 5.2
  */
 public class RSocketSecurity {
@@ -238,15 +239,12 @@ private <T> T getBeanOrNull(Class<T> beanClass) {
 		return getBeanOrNull(ResolvableType.forClass(beanClass));
 	}
 
+	@SuppressWarnings("unchecked")
 	private <T> T getBeanOrNull(ResolvableType type) {
 		if (this.context == null) {
 			return null;
 		}
-		String[] names = this.context.getBeanNamesForType(type);
-		if (names.length == 1) {
-			return (T) this.context.getBean(names[0]);
-		}
-		return null;
+		return (T) this.context.getBeanProvider(type).getIfUnique();
 	}
 
 	protected void setApplicationContext(ApplicationContext applicationContext) throws BeansException {

config/src/main/java/org/springframework/security/config/annotation/web/builders/HttpSecurity.java

@@ -139,6 +139,7 @@
  *
  * @author Rob Winch
  * @author Joe Grandja
+ * @author Ngoc Nhan
  * @since 3.2
  * @see EnableWebSecurity
  */
@@ -3719,12 +3720,7 @@ private <C extends SecurityConfigurerAdapter<DefaultSecurityFilterChain, HttpSec
 	}
 
 	private ObservationRegistry getObservationRegistry() {
-		ApplicationContext context = getContext();
-		String[] names = context.getBeanNamesForType(ObservationRegistry.class);
-		if (names.length == 1) {
-			return (ObservationRegistry) context.getBean(names[0]);
-		}
-		return ObservationRegistry.NOOP;
+		return getContext().getBeanProvider(ObservationRegistry.class).getIfUnique(() -> ObservationRegistry.NOOP);
 	}
 
 	/**

config/src/main/java/org/springframework/security/config/annotation/web/configuration/HttpSecurityConfiguration.java

@@ -20,7 +20,6 @@
 import java.util.List;
 import java.util.Map;
 
-import org.springframework.beans.factory.NoSuchBeanDefinitionException;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.context.ApplicationContext;
 import org.springframework.context.annotation.Bean;
@@ -56,6 +55,7 @@
  *
  * @author Eleftheria Stein
  * @author Jinwoo Bae
+ * @author Ngoc Nhan
  * @since 5.4
  */
 @Configuration(proxyBeanMethods = false)
@@ -226,21 +226,9 @@ private PasswordEncoder getPasswordEncoder() {
 			if (this.passwordEncoder != null) {
 				return this.passwordEncoder;
 			}
-			PasswordEncoder passwordEncoder = getBeanOrNull(PasswordEncoder.class);
-			if (passwordEncoder == null) {
-				passwordEncoder = PasswordEncoderFactories.createDelegatingPasswordEncoder();
-			}
-			this.passwordEncoder = passwordEncoder;
-			return passwordEncoder;
-		}
-
-		private <T> T getBeanOrNull(Class<T> type) {
-			try {
-				return this.applicationContext.getBean(type);
-			}
-			catch (NoSuchBeanDefinitionException ex) {
-				return null;
-			}
+			this.passwordEncoder = this.applicationContext.getBeanProvider(PasswordEncoder.class)
+				.getIfUnique(PasswordEncoderFactories::createDelegatingPasswordEncoder);
+			return this.passwordEncoder;
 		}
 
 		@Override

config/src/main/java/org/springframework/security/config/annotation/web/configurers/ExpressionUrlAuthorizationConfigurer.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2022 the original author or authors.
+ * Copyright 2002-2024 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.
@@ -75,6 +75,7 @@
  * @param <H> the type of {@link HttpSecurityBuilder} that is being configured
  * @author Rob Winch
  * @author Yanming Zhou
+ * @author Ngoc Nhan
  * @since 3.2
  * @see org.springframework.security.config.annotation.web.builders.HttpSecurity#authorizeRequests()
  * @deprecated Use {@link AuthorizeHttpRequestsConfigurer} instead
@@ -106,10 +107,9 @@ public final class ExpressionUrlAuthorizationConfigurer<H extends HttpSecurityBu
 	 * @see HttpSecurity#authorizeRequests()
 	 */
 	public ExpressionUrlAuthorizationConfigurer(ApplicationContext context) {
-		String[] grantedAuthorityDefaultsBeanNames = context.getBeanNamesForType(GrantedAuthorityDefaults.class);
-		if (grantedAuthorityDefaultsBeanNames.length == 1) {
-			GrantedAuthorityDefaults grantedAuthorityDefaults = context.getBean(grantedAuthorityDefaultsBeanNames[0],
-					GrantedAuthorityDefaults.class);
+		GrantedAuthorityDefaults grantedAuthorityDefaults = context.getBeanProvider(GrantedAuthorityDefaults.class)
+			.getIfUnique();
+		if (grantedAuthorityDefaults != null) {
 			this.rolePrefix = grantedAuthorityDefaults.getRolePrefix();
 		}
 		else {
@@ -167,22 +167,11 @@ private SecurityExpressionHandler<FilterInvocation> getExpressionHandler(H http)
 		}
 		ApplicationContext context = http.getSharedObject(ApplicationContext.class);
 		if (context != null) {
-			String[] roleHiearchyBeanNames = context.getBeanNamesForType(RoleHierarchy.class);
-			if (roleHiearchyBeanNames.length == 1) {
-				defaultHandler.setRoleHierarchy(context.getBean(roleHiearchyBeanNames[0], RoleHierarchy.class));
-			}
-			String[] grantedAuthorityDefaultsBeanNames = context.getBeanNamesForType(GrantedAuthorityDefaults.class);
-			if (grantedAuthorityDefaultsBeanNames.length == 1) {
-				GrantedAuthorityDefaults grantedAuthorityDefaults = context
-					.getBean(grantedAuthorityDefaultsBeanNames[0], GrantedAuthorityDefaults.class);
-				defaultHandler.setDefaultRolePrefix(grantedAuthorityDefaults.getRolePrefix());
-			}
-			String[] permissionEvaluatorBeanNames = context.getBeanNamesForType(PermissionEvaluator.class);
-			if (permissionEvaluatorBeanNames.length == 1) {
-				PermissionEvaluator permissionEvaluator = context.getBean(permissionEvaluatorBeanNames[0],
-						PermissionEvaluator.class);
-				defaultHandler.setPermissionEvaluator(permissionEvaluator);
-			}
+			context.getBeanProvider(RoleHierarchy.class).ifUnique(defaultHandler::setRoleHierarchy);
+			context.getBeanProvider(GrantedAuthorityDefaults.class)
+				.ifUnique((grantedAuthorityDefaults) -> defaultHandler
+					.setDefaultRolePrefix(grantedAuthorityDefaults.getRolePrefix()));
+			context.getBeanProvider(PermissionEvaluator.class).ifUnique(defaultHandler::setPermissionEvaluator);
 		}
 		this.expressionHandler = postProcess(defaultHandler);
 		return this.expressionHandler;

config/src/main/java/org/springframework/security/config/annotation/web/configurers/RememberMeConfigurer.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2023 the original author or authors.
+ * Copyright 2002-2024 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.
@@ -18,7 +18,6 @@
 
 import java.util.UUID;
 
-import org.springframework.beans.factory.NoSuchBeanDefinitionException;
 import org.springframework.context.ApplicationContext;
 import org.springframework.security.authentication.AuthenticationManager;
 import org.springframework.security.authentication.RememberMeAuthenticationProvider;
@@ -78,6 +77,7 @@
  *
  * @author Rob Winch
  * @author Eddú Meléndez
+ * @author Ngoc Nhan
  * @since 3.2
  */
 public final class RememberMeConfigurer<H extends HttpSecurityBuilder<H>>
@@ -444,20 +444,12 @@ private <C> C getSharedOrBean(H http, Class<C> type) {
 		if (shared != null) {
 			return shared;
 		}
-		return getBeanOrNull(type);
-	}
 
-	private <T> T getBeanOrNull(Class<T> type) {
 		ApplicationContext context = getBuilder().getSharedObject(ApplicationContext.class);
 		if (context == null) {
 			return null;
 		}
-		try {
-			return context.getBean(type);
-		}
-		catch (NoSuchBeanDefinitionException ex) {
-			return null;
-		}
+		return context.getBeanProvider(type).getIfUnique();
 	}
 
 }

config/src/main/java/org/springframework/security/config/annotation/web/configurers/RequestCacheConfigurer.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2013 the original author or authors.
+ * Copyright 2002-2024 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.
@@ -20,7 +20,6 @@
 import java.util.Collections;
 import java.util.List;
 
-import org.springframework.beans.factory.NoSuchBeanDefinitionException;
 import org.springframework.context.ApplicationContext;
 import org.springframework.http.MediaType;
 import org.springframework.security.config.annotation.web.HttpSecurityBuilder;
@@ -67,6 +66,7 @@
  * </ul>
  *
  * @author Rob Winch
+ * @author Ngoc Nhan
  * @since 3.2
  * @see RequestCache
  */
@@ -134,12 +134,8 @@ private <T> T getBeanOrNull(Class<T> type) {
 		if (context == null) {
 			return null;
 		}
-		try {
-			return context.getBean(type);
-		}
-		catch (NoSuchBeanDefinitionException ex) {
-			return null;
-		}
+
+		return context.getBeanProvider(type).getIfUnique();
 	}
 
 	@SuppressWarnings("unchecked")