// The configuration every Spring Authorization Server tutorial written before // September 2025 tells you to write. It compiled against 1.5.8 and does not compile // against 7.1.1. Kept out of the build on purpose - scripts/compile-legacy.sh runs // javac against it and captures the real compiler output into // docs/output/as-legacy-compile-failure.txt. // // Three separate breakages in nine lines: // 1. the *Configuration class moved out of the SAS jar into spring-security-config // 2. the *Configurer class moved AND changed package shape // 3. applyDefaultSecurity(HttpSecurity) was deleted outright package com.ankurm.authserver.legacy; import org.springframework.security.oauth2.server.authorization.config.annotation.web.configuration.OAuth2AuthorizationServerConfiguration; import org.springframework.security.oauth2.server.authorization.config.annotation.web.configurers.OAuth2AuthorizationServerConfigurer; import org.springframework.context.annotation.Bean; import org.springframework.context.annotation.Configuration; import org.springframework.core.Ordered; import org.springframework.core.annotation.Order; import org.springframework.security.config.Customizer; import org.springframework.security.config.annotation.web.builders.HttpSecurity; import org.springframework.security.web.SecurityFilterChain; @Configuration public class LegacySasConfig { @Bean @Order(Ordered.HIGHEST_PRECEDENCE) public SecurityFilterChain authorizationServerSecurityFilterChain(HttpSecurity http) throws Exception { // The 1.x one-liner. OAuth2AuthorizationServerConfiguration.applyDefaultSecurity(http); http.getConfigurer(OAuth2AuthorizationServerConfigurer.class) .oidc(Customizer.withDefaults()); return http.build(); } }