☕ Cap 09: Stack Corporativa: Spring Boot 3, Spring Security, JPA/PostgreSQL e Angular Standalone - Exemplos Práticos

Código executável completo demonstrando a integração de sistemas Full Stack.

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🗺️ Fluxo de Integração

flowchart LR
    ANGULAR["🅰️ Angular Standalone (Signals + NgRx SignalStore)"]
    ANGULAR -->|REST JSON + JWT Bearer| SPRING["🍃 Spring Boot 3 (Controllers, Services, Repositories)"]
    SPRING --> JPA["Spring Data JPA / Hibernate"]
    JPA --> DB["PostgreSQL Database"]
    
    style ANGULAR fill:#ede7f6,stroke:#673ab7,stroke-width:2px
    style SPRING fill:#e8f5e9,stroke:#4caf50,stroke-width:2px
    style DB fill:#e1f5fe,stroke:#03a9f4,stroke-width:1px

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📄 Código de Demonstração (SecurityConfig.java)

// SecurityConfig.java (Spring Boot 3)
package com.empresa.portal.config;

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.security.config.annotation.web.builders.HttpSecurity;
import org.springframework.security.config.http.SessionCreationPolicy;
import org.springframework.security.web.SecurityFilterChain;

@Configuration
public class SecurityConfig {

    @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/auth/**", "/swagger-ui/**").permitAll()
                .requestMatchers("/api/admin/**").hasRole("ADMIN")
                .anyRequest().authenticated()
            )
            .build();
    }
}

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🚀 Saída Esperada de Execução

2026-08-25T03:55:00.210Z INFO [portal-service] Initializing Spring Security FilterChain
2026-08-25T03:55:00.250Z INFO [portal-service] Stateless session policy configured.
2026-08-25T03:55:00.300Z INFO [portal-service] TomCat started on port 8080 (http) with context path ''

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