Add default authorizationRequestBaseUri to DefaultOAuth2AuthorizationRequestResolver

Closes gh-16383

Signed-off-by: DingHao <[email protected]>

Author: kse-music

oauth2/oauth2-client/src/main/java/org/springframework/security/oauth2/client/web/DefaultOAuth2AuthorizationRequestResolver.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2022 the original author or authors.
+ * Copyright 2002-2025 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.
@@ -85,6 +85,17 @@ public final class DefaultOAuth2AuthorizationRequestResolver implements OAuth2Au
 	private Consumer<OAuth2AuthorizationRequest.Builder> authorizationRequestCustomizer = (customizer) -> {
 	};
 
+	/**
+	 * Constructs a {@code DefaultOAuth2AuthorizationRequestResolver} using the provided
+	 * parameters.
+	 * @param clientRegistrationRepository the repository of client registrations
+	 * authorization requests
+	 */
+	public DefaultOAuth2AuthorizationRequestResolver(ClientRegistrationRepository clientRegistrationRepository) {
+		this(clientRegistrationRepository,
+				OAuth2AuthorizationRequestRedirectFilter.DEFAULT_AUTHORIZATION_REQUEST_BASE_URI);
+	}
+
 	/**
 	 * Constructs a {@code DefaultOAuth2AuthorizationRequestResolver} using the provided
 	 * parameters.

oauth2/oauth2-client/src/test/java/org/springframework/security/oauth2/client/web/DefaultOAuth2AuthorizationRequestResolverTests.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2022 the original author or authors.
+ * Copyright 2002-2025 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.
@@ -563,6 +563,19 @@ public void resolveWhenAuthorizationRequestCustomizerOverridesParameterThenQuery
 						+ "nonce=([a-zA-Z0-9\\-\\.\\_\\~]){43}&" + "appid=client-id");
 	}
 
+	@Test
+	public void resolveWhenAuthorizationRequestNoProvideAuthorizationRequestBaseUri() {
+		OAuth2AuthorizationRequestResolver resolver = new DefaultOAuth2AuthorizationRequestResolver(
+				this.clientRegistrationRepository);
+		ClientRegistration clientRegistration = this.registration2;
+		String requestUri = this.authorizationRequestBaseUri + "/" + clientRegistration.getRegistrationId();
+		MockHttpServletRequest request = new MockHttpServletRequest("GET", requestUri);
+		request.setServletPath(requestUri);
+		OAuth2AuthorizationRequest authorizationRequest = resolver.resolve(request);
+		assertThat(authorizationRequest.getRedirectUri())
+			.isEqualTo("http://localhost/login/oauth2/code/" + clientRegistration.getRegistrationId());
+	}
+
 	private static ClientRegistration.Builder fineRedirectUriTemplateClientRegistration() {
 		// @formatter:off
 		return ClientRegistration.withRegistrationId("fine-redirect-uri-template-client-registration")