Spring Security的RBAC数据模型嵌入

1.简介

​基于角色的权限访问控制（Role-Based Access Control）作为传统访问控制（自主访问，强制访问）的有前景的代替受到广泛的关注。在RBAC中，权限与角色相关联，用户通过成为适当角色的成员而得到这些角色的权限。这就极大地简化了权限的管理。在一个组织中，角色是为了完成各种工作而创造，用户则依据它的责任和资格来被指派相应的角色，用户可以很容易地从一个角色被指派到另一个角色。角色可依新的需求和系统的合并而赋予新的权限，而权限也可根据需要而从某角色中回收。角色与角色的关系可以建立起来以囊括更广泛的客观情况。

2.授权前台页面对接流程

3.代码相关

新建工程 authorize:

pom.xml

<?xml version="1.0" encoding="UTF-8"?>

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">

    <modelVersion>4.0.0</modelVersion>

    <parent>

        <groupId>com.city.security</groupId>

        <artifactId>city-security</artifactId>

        <version>1.0.0-SNAPSHOT</version>

    </parent>

    <artifactId>city-security-authorize</artifactId>

    <dependencies>

        <dependency>

            <groupId>javax.servlet</groupId>

            <artifactId>javax.servlet-api</artifactId>

        </dependency>

        <dependency>

            <groupId>org.springframework.security</groupId>

            <artifactId>spring-security-core</artifactId>

        </dependency>

    </dependencies>

</project>

RbacService

public interface RbacService {

    boolean hasPermission(HttpServletRequest request, Authentication authentication);

}

RbacServiceImpl

@Component("rbacService")

public class RbacServiceImpl implements RbacService {

    @Autowired

    private AntPathMatcher antPathMatcher = new AntPathMatcher();

    @Override

    public boolean hasPermission(HttpServletRequest request, Authentication authentication) {

        Object principal = authentication.getPrincipal();

        boolean hasPermission = false;

        if (principal instanceof UserDetails) {

            //说明我从数据库查到信息放到这个principal里面

            String username = ((UserDetails) principal).getUsername();

            //读取用户所拥有的权限

            Set<String> urls = new HashSet<String>();

            for (String url : urls) {

                if(antPathMatcher.match(url,request.getRequestURI())){

                    hasPermission=true;

                    break;

                }

            }

        }

        return hasPermission;

    }

}

修改DemoAuthorizeConifgProvider:

@Component

@Order(Integer.MAX_VALUE)//表示最后读取

public class DemoAuthorizeConifgProvider implements AuthorizeConfigProvider {

    @Override

    public void config(ExpressionUrlAuthorizationConfigurer<HttpSecurity>.ExpressionInterceptUrlRegistry config) {

        System.out.println("---DemoAuthorizeConifgProvider------");

        config.anyRequest().access("@rbacService.hasPermission(request,authentication)");

    }

}

@Order修改顺序:

//配置permitAll的路径

@Component

@Order(Integer.MIN_VALUE)//最先读取

public class CityAuthorizeConfigProvider implements AuthorizeConfigProvider {

    @Autowired

    private SecurityProperties securityProperties;

    @Override

    public void config(ExpressionUrlAuthorizationConfigurer<HttpSecurity>.ExpressionInterceptUrlRegistry config) {

        config.antMatchers(

                "/static/**","/page/login","/page/failure","/page/mobilePage",

                "/code/image","/code/sms","/authentication/mobile",securityProperties.getBrower().getSignUPUrl(),

                "/user/register","/page/registerPage","/page/invalidSession","/page/logoutSuccess",securityProperties.getBrower().getSignOutUrl()

        )

                .permitAll();

    }

}

4.基于方法的控制表达式

1. 开启使用方法注解的配置

@Configuration

@EnableWebSecurity

@EnableGlobalMethodSecurity(prePostEnabled = true)

public class SpringSecurityConfig extends WebSecurityConfigurerAdapter {

2.四种方法注解:@PreAuthorize、@PostAuthorize、@PreFilter和、PostFilter

1. 用法

@PreAuthorize 注解适合进入方法前的权限验证

@PreAuthorize("hasRole('ROLE_ADMIN')")

@GetMapping("/admin")

@ResponseBody

public Object admin(Principal principal) {

    return principal;

}

@PreAuthorize("hasAnyRole('ROLE_ADMIN','ROLE_USER') and principal.username.equals(#username)")

@GetMapping("/test/{username}")

@ResponseBody

public Object test(@PathVariable String username) {

    return "Hello test";

}

@PostAuthorize 在方法执行后再进行权限验证,适合验证带有返回值的权限

// 这里的returnObject就代表返回的对象

@PostAuthorize("returnObject.username.equals(principal.username)")

@GetMapping("/demo2")

public Object demo2() {

    User user = new User("lzc","lzc",AuthorityUtils.commaSeparatedStringToAuthorityList("ROLE_USER"));

    return user;

}

@PreFilter可以对集合类型的参数进行过滤，@PostFilter可以对集合类型返回值进行过滤，用法跟上面两种方式类似。