beginnerSpring Security Architecture: The Filter Chain & Internal Flow
What replaced WebSecurityConfigurerAdapter in Spring Security 6?
WebSecurityConfigurerAdapter was deprecated in Spring Security 5.7 and fully removed in 6.x. It's replaced by defining one or more @Bean methods returning SecurityFilterChain, configured using the HttpSecurity lambda DSL. This component-based approach fits better with Spring Boot's auto-configuration model and allows multiple independent filter chains for different URL patterns.
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