67 lines
2.9 KiB
Java
67 lines
2.9 KiB
Java
package com.learn.config;
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import com.learn.security.JwtAuthFilter;
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import org.springframework.context.annotation.Bean;
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import org.springframework.context.annotation.Configuration;
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import org.springframework.http.HttpMethod;
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import org.springframework.security.config.annotation.method.configuration.EnableMethodSecurity;
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import org.springframework.security.config.annotation.web.builders.HttpSecurity;
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import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;
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import org.springframework.security.config.http.SessionCreationPolicy;
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import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
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import org.springframework.security.crypto.password.PasswordEncoder;
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import org.springframework.security.web.SecurityFilterChain;
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import org.springframework.security.web.authentication.UsernamePasswordAuthenticationFilter;
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/**
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* Spring Security 配置（第 1-3 天）
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*
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* 核心设计：
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* 1. 无状态会话（JWT，不依赖 Cookie/Session）
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* 2. 自定义 JWT 过滤器在 UsernamePasswordAuthenticationFilter 之前执行
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* 3. RBAC：ADMIN 可增删改，USER 只能查
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* 4. 公开 /api/auth/** 和 Actuator 端点
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*/
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@Configuration
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@EnableWebSecurity
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@EnableMethodSecurity // 开启方法级安全注解（第 3 天）
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public class SecurityConfig {
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private final JwtAuthFilter jwtAuthFilter;
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public SecurityConfig(JwtAuthFilter jwtAuthFilter) {
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this.jwtAuthFilter = jwtAuthFilter;
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}
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@Bean
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public SecurityFilterChain filterChain(HttpSecurity http) throws Exception {
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http
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.csrf(csrf -> csrf.disable()) // 前后端分离，禁用 CSRF
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.sessionManagement(sm -> sm
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.sessionCreationPolicy(SessionCreationPolicy.STATELESS)) // 无状态
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.authorizeHttpRequests(auth -> auth
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// 公开接口
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.requestMatchers("/api/auth/**").permitAll()
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.requestMatchers("/actuator/**").permitAll()
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.requestMatchers("/", "/index.html", "/css/**", "/js/**").permitAll()
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// 查询：USER 及以上
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.requestMatchers(HttpMethod.GET, "/api/students/**").hasAnyRole("ADMIN", "USER")
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// 增删改：仅 ADMIN（第 3 天 RBAC）
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.requestMatchers(HttpMethod.POST, "/api/students/**").hasRole("ADMIN")
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.requestMatchers(HttpMethod.PUT, "/api/students/**").hasRole("ADMIN")
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.requestMatchers(HttpMethod.DELETE, "/api/students/**").hasRole("ADMIN")
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// 其他请求需认证
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.anyRequest().authenticated()
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)
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// 在用户名密码过滤器之前插入 JWT 过滤器
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.addFilterBefore(jwtAuthFilter, UsernamePasswordAuthenticationFilter.class);
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return http.build();
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}
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@Bean
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public PasswordEncoder passwordEncoder() {
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return new BCryptPasswordEncoder(); // BCrypt 加密，不可逆
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}
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}
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