spring security 入门级全篇代码

CustomAccessDecisionManager 类

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@Component
public class CustomAccessDecisionManager
        implements AccessDecisionManager {
    @Override
    public void decide(Authentication auth,
                       Object object,
                       Collection<ConfigAttribute> ca){
        Collection<? extends GrantedAuthority> auths = auth.getAuthorities();
        for (ConfigAttribute configAttribute : ca) {
            if ("ROLE_LOGIN".equals(configAttribute.getAttribute())
                    && auth instanceof UsernamePasswordAuthenticationToken) {
                return;
            }
            for (GrantedAuthority authority : auths) {
                if (configAttribute.getAttribute().equals(authority.getAuthority())) {
                    return;
                }
            }
        }
        throw new AccessDeniedException("权限不足");
    }

    @Override
    public boolean supports(ConfigAttribute attribute) {
        return true;
    }

    @Override
    public boolean supports(Class<?> clazz) {
        return true;
    }
}

CustomFilterInvocationSecurityMetadataSource 类

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@Component
public class CustomFilterInvocationSecurityMetadataSource
        implements FilterInvocationSecurityMetadataSource {
    AntPathMatcher antPathMatcher = new AntPathMatcher();
    @Autowired
    MenuMapper menuMapper;
    @Override
    public Collection<ConfigAttribute> getAttributes(Object object)
            throws IllegalArgumentException {
        String requestUrl = ((FilterInvocation) object).getRequestUrl();
        List<Menu> allMenus = menuMapper.getAllMenus();
        for (Menu menu : allMenus) {
            if (antPathMatcher.match(menu.getPattern(), requestUrl)) {
                List<Role> roles = menu.getRoles();
                String[] roleArr = new String[roles.size()];
                for (int i = 0; i < roleArr.length; i++) {
                    roleArr[i] = roles.get(i).getName();
                }
                return SecurityConfig.createList(roleArr);
            }
        }
        return SecurityConfig.createList("ROLE_LOGIN");
    }
    @Override
    public Collection<ConfigAttribute> getAllConfigAttributes() {
        return null;
    }
    @Override
    public boolean supports(Class<?> clazz) {
        return FilterInvocation.class.isAssignableFrom(clazz);
    }
}

WebSecurityConfig  类

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@Configuration
public class WebSecurityConfig extends WebSecurityConfigurerAdapter {
    @Autowired
    UserService userService;
    @Bean
    RoleHierarchy roleHierarchy() {
        RoleHierarchyImpl roleHierarchy = new RoleHierarchyImpl();
        String hierarchy = "ROLE_dba > ROLE_admin ROLE_admin > ROLE_user";
        roleHierarchy.setHierarchy(hierarchy);
        return roleHierarchy;
    }
    @Bean
    PasswordEncoder passwordEncoder() {
        return new BCryptPasswordEncoder();
    }
    @Override
    protected void configure(AuthenticationManagerBuilder auth) throws Exception {
        auth.userDetailsService(userService);
    }

    @Override
    protected void configure(HttpSecurity http) throws Exception {
        http.authorizeRequests()
                .withObjectPostProcessor(new ObjectPostProcessor<FilterSecurityInterceptor>() {
                    @Override
                    public <O extends FilterSecurityInterceptor> O postProcess(O object) {
                        object.setSecurityMetadataSource(cfisms());
                        object.setAccessDecisionManager(cadm());
                        return object;
                    }
                })
                .and()
                .formLogin()
                .loginProcessingUrl("/login").permitAll()
                .and()
                .csrf().disable();
    }
    @Bean
    CustomFilterInvocationSecurityMetadataSource cfisms() {
        return new CustomFilterInvocationSecurityMetadataSource();
    }
    @Bean
    CustomAccessDecisionManager cadm() {
        return new CustomAccessDecisionManager();
    }
}

HelloController  类

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@RestController
public class HelloController {
    @GetMapping("/admin/hello")
    public String admin() {
        return "hello admin";
    }
    @GetMapping("/db/hello")
    public String dba() {
        return "hello dba";
    }
    @GetMapping("/user/hello")
    public String user() {
        return "hello user";
    }
}

mapper 接口
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@Mapper
public interface MenuMapper {
    List<Menu> getAllMenus();
}

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper
        PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
        "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="org.sang.security02.mapper.MenuMapper">
    <resultMap id="BaseResultMap" type="org.sang.security02.model.Menu">
        <id property="id" column="id"/>
        <result property="pattern" column="pattern"/>
        <collection property="roles" ofType="org.sang.security02.model.Role">
            <id property="id" column="rid"/>
            <result property="name" column="rname"/>
            <result property="nameZh" column="rnameZh"/>
        </collection>
    </resultMap>
    <select id="getAllMenus" resultMap="BaseResultMap">
        SELECT m.*,r.id AS rid,r.name AS rname,r.nameZh AS rnameZh FROM menu m LEFT JOIN menu_role mr ON m.`id`=mr.`mid` LEFT JOIN role r ON mr.`rid`=r.`id`
    </select>
</mapper>

@Mapper
public interface UserMapper {
    User loadUserByUsername(String username);
    List<Role> getUserRolesByUid(Integer id);
}

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper
        PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
        "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="org.sang.security02.mapper.UserMapper">
    <select id="loadUserByUsername" resultType="org.sang.security02.model.User">
        select * from user where username=#{username}
    </select>
    <select id="getUserRolesByUid" resultType="org.sang.security02.model.Role">
        select * from role r,user_role ur where r.id=ur.rid and ur.uid=#{id}
    </select>
</mapper>

model 层
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public class Menu {
    private Integer id;
    private String pattern;
    private List<Role> roles;

    public List<Role> getRoles() {
        return roles;
    }

    public void setRoles(List<Role> roles) {
        this.roles = roles;
    }

    public Integer getId() {
        return id;
    }

    public void setId(Integer id) {
        this.id = id;
    }

    public String getPattern() {
        return pattern;
    }

    public void setPattern(String pattern) {
        this.pattern = pattern;
    }
}

ublic class Role {
    private Integer id;
    private String name;
    private String nameZh;
    //省略getter/setter

    public Integer getId() {
        return id;
    }

    public void setId(Integer id) {
        this.id = id;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public String getNameZh() {
        return nameZh;
    }

    public void setNameZh(String nameZh) {
        this.nameZh = nameZh;
    }
}

public class User implements UserDetails {
    private Integer id;
    private String username;
    private String password;
    private Boolean enabled;
    private Boolean locked;
    private List<Role> roles;
    @Override
    public Collection<? extends GrantedAuthority> getAuthorities() {
        List<SimpleGrantedAuthority> authorities = new ArrayList<>();
        for (Role role : roles) {
            authorities.add(new SimpleGrantedAuthority(role.getName()));
        }
        return authorities;
    }
    @Override
    public String getPassword() {
        return password;
    }
    @Override
    public String getUsername() {
        return username;
    }
    @Override
    public boolean isAccountNonExpired() {
        return true;
    }
    @Override
    public boolean isAccountNonLocked() {
        return !locked;
    }
    @Override
    public boolean isCredentialsNonExpired() {
        return true;
    }
    @Override
    public boolean isEnabled() {
        return enabled;
    }
    //省略getter/setter

    public Integer getId() {
        return id;
    }

    public void setId(Integer id) {
        this.id = id;
    }

    public void setUsername(String username) {
        this.username = username;
    }

    public void setPassword(String password) {
        this.password = password;
    }

//    public Boolean getEnabled() {
//        return enabled;
//    }

    public void setEnabled(Boolean enabled) {
        this.enabled = enabled;
    }

    public Boolean getLocked() {
        return locked;
    }

    public void setLocked(Boolean locked) {
        this.locked = locked;
    }

    public List<Role> getRoles() {
        return roles;
    }

    public void setRoles(List<Role> roles) {
        this.roles = roles;
    }
}



service 层
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@Service
public class UserService implements UserDetailsService {
    @Autowired
    UserMapper userMapper;
    @Override
    public UserDetails loadUserByUsername(String username) throws UsernameNotFoundException {
        User user = userMapper.loadUserByUsername(username);
        if (user == null) {
            throw new UsernameNotFoundException("账户不存在!");
        }
        user.setRoles(userMapper.getUserRolesByUid(user.getId()));
        return user;
    }
}

Pom 文件

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<dependencies>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-security</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-web</artifactId>
    </dependency>
    <dependency>
        <groupId>org.mybatis.spring.boot</groupId>
        <artifactId>mybatis-spring-boot-starter</artifactId>
        <version>1.3.2</version>
    </dependency>
    <dependency>
        <groupId>mysql</groupId>
        <artifactId>mysql-connector-java</artifactId>
        <scope>runtime</scope>
    </dependency>
    <dependency>
        <groupId>com.alibaba</groupId>
        <artifactId>druid</artifactId>
        <version>1.1.10</version>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-test</artifactId>
        <scope>test</scope>
    </dependency>
    <dependency>
        <groupId>org.springframework.security</groupId>
        <artifactId>spring-security-test</artifactId>
        <scope>test</scope>
    </dependency>
</dependencies>

数据库

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