SecurityConfig.java

package com.example.devSns.config;

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.HttpMethod;
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.crypto.bcrypt.BCryptPasswordEncoder;
import org.springframework.security.crypto.password.PasswordEncoder;
import org.springframework.security.web.SecurityFilterChain;
import org.springframework.security.web.authentication.UsernamePasswordAuthenticationFilter;

@Configuration
@EnableWebSecurity
public class SecurityConfig {

    private final JwtAuthenticationFilter jwtAuthenticationFilter;

    public SecurityConfig(JwtAuthenticationFilter jwtAuthenticationFilter) {
        this.jwtAuthenticationFilter = jwtAuthenticationFilter;
    }

    @Bean
    public SecurityFilterChain filterChain(HttpSecurity http) throws Exception {
        http
                .csrf(csrf -> csrf.disable())
                .httpBasic(basic -> basic.disable())
                .formLogin(form -> form.disable())
                .sessionManagement(sm ->
                        sm.sessionCreationPolicy(SessionCreationPolicy.STATELESS)
                )
                .authorizeHttpRequests(auth -> auth
                        // 로그인/회원가입, H2 콘솔은 누구나 허용
                        .requestMatchers("/auth/**", "/h2-console/**").permitAll()
                        // 읽기(GET)은 일단 공개
                        .requestMatchers(HttpMethod.GET, "/**").permitAll()
                        // 작성/수정/삭제는 인증 필요
                        .requestMatchers(HttpMethod.POST, "/**").authenticated()
                        .requestMatchers(HttpMethod.PUT, "/**").authenticated()
                        .requestMatchers(HttpMethod.DELETE, "/**").authenticated()
                        .anyRequest().authenticated()
                );

        // H2 콘솔용 frame 옵션
        http.headers(headers -> headers.frameOptions(frame -> frame.sameOrigin()));

        // JWT 필터 등록
        http.addFilterBefore(jwtAuthenticationFilter, UsernamePasswordAuthenticationFilter.class);

        return http.build();
    }

    @Bean
    public PasswordEncoder passwordEncoder() {
        return new BCryptPasswordEncoder();
    }
}