SecurityConfig.java

package com.example.oauth2.config;

import com.example.oauth2.security.CustomOAuth2UserService;
import com.example.oauth2.security.OAuth2AuthenticationSuccessHandler;
import com.example.oauth2.security.OAuth2AuthenticationFailureHandler;
import lombok.RequiredArgsConstructor;
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.annotation.web.configuration.EnableWebSecurity;
import org.springframework.security.config.http.SessionCreationPolicy;
import org.springframework.security.web.SecurityFilterChain;
import org.springframework.web.cors.CorsConfiguration;
import org.springframework.web.cors.CorsConfigurationSource;
import org.springframework.web.cors.UrlBasedCorsConfigurationSource;

import java.util.Arrays;

@Configuration
@EnableWebSecurity
@RequiredArgsConstructor
public class SecurityConfig {
    
    private final CustomOAuth2UserService customOAuth2UserService;
    private final OAuth2AuthenticationSuccessHandler oAuth2AuthenticationSuccessHandler;
    private final OAuth2AuthenticationFailureHandler oAuth2AuthenticationFailureHandler;
    
    @Bean
    public SecurityFilterChain filterChain(HttpSecurity http) throws Exception {
        http
            .cors(cors -> cors.configurationSource(corsConfigurationSource()))
            .csrf(csrf -> csrf.disable())
            .sessionManagement(session -> session.sessionCreationPolicy(SessionCreationPolicy.STATELESS))
            .formLogin(form -> form.disable())
            .httpBasic(basic -> basic.disable())
            .authorizeHttpRequests(auth -> auth
                .requestMatchers("/", "/api/auth/**", "/oauth2/**", "/h2-console/**").permitAll()
                .anyRequest().authenticated()
            )
            .oauth2Login(oauth2 -> oauth2
                .authorizationEndpoint(authorization -> authorization
                    .baseUri("/oauth2/authorize")
                )
                .redirectionEndpoint(redirection -> redirection
                    .baseUri("/login/oauth2/code/*")
                )
                .userInfoEndpoint(userInfo -> userInfo
                    .userService(customOAuth2UserService)
                )
                .successHandler(oAuth2AuthenticationSuccessHandler)
                .failureHandler(oAuth2AuthenticationFailureHandler)
            );
            
        // H2 콘솔 사용을 위한 설정
        http.headers(headers -> headers.frameOptions().disable());
        
        return http.build();
    }
    
    @Bean
    public CorsConfigurationSource corsConfigurationSource() {
        CorsConfiguration configuration = new CorsConfiguration();
        configuration.setAllowedOriginPatterns(Arrays.asList("http://localhost:3000"));
        configuration.setAllowedMethods(Arrays.asList("GET", "POST", "PUT", "DELETE", "OPTIONS"));
        configuration.setAllowedHeaders(Arrays.asList("*"));
        configuration.setAllowCredentials(true);
        
        UrlBasedCorsConfigurationSource source = new UrlBasedCorsConfigurationSource();
        source.registerCorsConfiguration("/**", configuration);
        return source;
    }
}