Spring Boot 4

Spring Boot 4.0 Patterns

Quick Reference

Jakarta EE Migration

Antes (javax)	Ahora (jakarta)
javax.persistence.*	jakarta.persistence.*
javax.validation.*	jakarta.validation.*
javax.servlet.*	jakarta.servlet.*
javax.annotation.*	jakarta.annotation.*

Security Configuration

// ✅ Spring Security 6.4+
@Bean
public SecurityFilterChain filterChain(HttpSecurity http) throws Exception {
    return http
        .csrf(csrf -> csrf.disable())
        .sessionManagement(session -> session
            .sessionCreationPolicy(SessionCreationPolicy.STATELESS))
        .authorizeHttpRequests(auth -> auth
            .requestMatchers("/api/public/**").permitAll()
            .requestMatchers("/api/admin/**").hasRole("ADMIN")
            .anyRequest().authenticated())
        .oauth2ResourceServer(oauth2 -> oauth2.jwt(Customizer.withDefaults()))
        .build();
}