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思维导图如下:
RBAC 全称为基于角色的权限控制,本段将会从什么是RBAC,模型分类,什么是权限,用户组的使用,实例分析等几个方面阐述RBAC
绘制思维导图如下
RBAC 全称为用户角色权限控制,通过角色关联用户,角色关联权限,这种方式,间阶的赋予用户的权限,如下图所示
对于通常的系统而言,存在多个用户具有相同的权限,在分配的时候,要为指定的用户分配相关的权限,修改的时候也要依次的对这几个用户的权限进行修改,有了角色这个权限,在修改权限的时候,只需要对角色进行修改,就可以实现相关的权限的修改。这样做增加了效率,减少了权限漏洞的发生。
对于RBAC模型来说,分为以下几个模型 分别是RBAC0,RBAC1,RBAC2,RBAC3,这四个模型,这段将会依次介绍这四个模型,其中最常用的模型有RBAC0.
RBAC0是最简单的RBAC模型,这里面包含了两种。
用户和角色是多对一的关系,即一个用户只充当一种角色,一个角色可以有多个角色的担当。用户和角色是多对多的关系,即,一个用户可以同时充当多个角色,一个角色可以有多个用户。
此系统功能单一,人员较少,这里举个栗子,张三既是行政,也负责财务,此时张三就有俩个权限,分别是行政权限,和财务权限两个部分。
相对于RBAC0模型来说,增加了子角色,引入了继承的概念。
这里RBAC2模型,在RBAC0模型的基础上,增加了一些功能,以及限制
即,同一个用户不能拥有两个互斥的角色,举个例子,在财务系统中,一个用户不能拥有会计员和审计这两种角色。
即,用一个角色,所拥有的成员是固定的,例如对于CEO这种角色,同一个角色,也只能有一个用户。
即,对于该角色来说,如果想要获得更高的角色,需要先获取低一级别的角色。举个栗子,对于副总经理和经理这两个权限来说,需要先有副总经理权限,才能拥有经理权限,其中副总经理权限是经理权限的先决条件。
即,一个用户可以拥有两个角色,但是这俩个角色不能同时使用,需要切换角色才能进入另外一个角色。举个栗子,对于总经理和专员这两个角色,系统只能在一段时间,拥有其一个角色,不能同时对这两种角色进行操作。
即,RBAC1,RBAC2,两者模型全部累计,称为统一模型。
权限是资源的集合,这里的资源指的是软件中的所有的内容,即,对页面的操作权限,对页面的访问权限,对数据的增删查改的权限。举个栗子。对于下图中的系统而言,
拥有,计划管理,客户管理,合同管理,出入库通知单管理,粮食安全追溯,粮食统计查询,设备管理这几个页面,对这几个页面的访问,以及是否能够访问到菜单,都属于权限。
对于用户组来说,是把众多的用户划分为一组,进行批量授予角色,即,批量授予权限。举个栗子,对于部门来说,一个部门拥有一万多个员工,这些员工都拥有相同的角色,如果没有用户组,可能需要一个个的授予相关的角色,在拥有了用户组以后,只需要,把这些用户全部划分为一组,然后对该组设置授予角色,就等同于对这些用户授予角色。
优点:减少工作量,便于理解,增加多级管理,等。
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首先添加依赖
- <dependency>
- <groupId>org.springframework.boot</groupId>
- <artifactId>spring-boot-starter-security</artifactId>
- </dependency>
然后添加相关的访问接口
- package com.example.demo.web;
-
- import org.springframework.web.bind.annotation.RequestMapping;
- import org.springframework.web.bind.annotation.RestController;
-
- @RestController
- @RequestMapping("/test")
- public class Test {
- @RequestMapping("/test")
- public String test(){
- return "test";
- }
- }
最后启动项目,在日志中查看相关的密码
访问接口,可以看到相关的登录界面
输入用户名和相关的密码
- 用户名:user
- 密码 984cccf2-ba82-468e-a404-7d32123d0f9c
登录成功
在配置文件中,书写相关的登录和密码
- spring:
- security:
- user:
- name: ming
- password: 123456
- roles: admin
在登录页面,输入用户名和密码,即可正常登录。
需要自定义类继承 WebSecurityConfigurerAdapter 代码如下
- package com.example.demo.config;
-
- import org.springframework.context.annotation.Bean;
- import org.springframework.context.annotation.Configuration;
- import org.springframework.security.config.annotation.authentication.builders.AuthenticationManagerBuilder;
- import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;
- import org.springframework.security.crypto.password.NoOpPasswordEncoder;
- import org.springframework.security.crypto.password.PasswordEncoder;
-
- @Configuration
- public class MyWebSecurityConfig extends WebSecurityConfigurerAdapter {
- @Bean
- PasswordEncoder passwordEncoder(){
- return NoOpPasswordEncoder.getInstance();
- }
-
- @Override
- protected void configure(AuthenticationManagerBuilder auth) throws Exception {
- auth.inMemoryAuthentication()
- .withUser("admin").password("123").roles("admin");
- }
- }
即,配置的用户名为admin,密码为123,角色为admin
- package com.ming.demo.interceptor;
-
- import org.springframework.beans.factory.annotation.Autowired;
- import org.springframework.context.annotation.Bean;
- import org.springframework.context.annotation.Configuration;
- import org.springframework.http.HttpMethod;
- import org.springframework.security.config.annotation.authentication.builders.AuthenticationManagerBuilder;
- import org.springframework.security.config.annotation.method.configuration.EnableGlobalMethodSecurity;
- import org.springframework.security.config.annotation.web.builders.HttpSecurity;
- import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;
- import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;
- import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
- import org.springframework.security.crypto.password.PasswordEncoder;
- import org.springframework.security.web.authentication.rememberme.TokenBasedRememberMeServices;
-
- @Configuration
- @EnableWebSecurity
- public class SecurityConfig extends WebSecurityConfigurerAdapter {
- //基于内存的用户存储
- @Override
- public void configure(AuthenticationManagerBuilder auth) throws Exception {
- auth.inMemoryAuthentication()
- .withUser("itguang").password("123456").roles("USER").and()
- .withUser("admin").password("{noop}" + "123456").roles("ADMIN");
- }
-
- //请求拦截
- @Override
- protected void configure(HttpSecurity http) throws Exception {
- http.authorizeRequests()
- .anyRequest().permitAll()
- .and()
- .formLogin()
- .permitAll()
- .and()
- .logout()
- .permitAll();
- }
-
- }
这是一个小demo,目的,登录以后返回jwt生成的token
添加web依赖
导入JWT和Security依赖
- <!-- https://mvnrepository.com/artifact/io.jsonwebtoken/jjwt -->
- <dependency>
- <groupId>io.jsonwebtoken</groupId>
- <artifactId>jjwt</artifactId>
- <version>0.9.1</version>
- </dependency>
- <!-- https://mvnrepository.com/artifact/org.springframework.boot/spring-boot-starter-security -->
- <dependency>
- <groupId>org.springframework.boot</groupId>
- <artifactId>spring-boot-starter-security</artifactId>
- <version>2.3.1.RELEASE</version>
- </dependency>
创建 一个相关的JavaBean
- package com.example.demo;
-
- import org.springframework.security.core.GrantedAuthority;
- import org.springframework.security.core.userdetails.UserDetails;
-
- import java.util.Collection;
-
- public class JwtUser implements UserDetails {
- private String username;
- private String password;
- private Integer state;
- private Collection<? extends GrantedAuthority> authorities;
- public JwtUser(){
-
- }
-
- public JwtUser(String username, String password, Integer state, Collection<? extends GrantedAuthority> authorities){
- this.username = username;
- this.password = password;
- this.state = state;
- this.authorities = authorities;
- }
-
- @Override
- public Collection<? extends GrantedAuthority> getAuthorities() {
- return authorities;
- }
-
- @Override
- public String getPassword() {
- return this.password;
- }
-
- @Override
- public String getUsername() {
- return this.username;
- }
-
- @Override
- public boolean isAccountNonExpired() {
- return true;
- }
-
- @Override
- public boolean isAccountNonLocked() {
- return true;
- }
-
- @Override
- public boolean isCredentialsNonExpired() {
- return true;
- }
-
- @Override
- public boolean isEnabled() {
- return true;
- }
- }
编写工具类,用来生成token,以及刷新token,以及验证token
- package com.example.demo;
-
- import io.jsonwebtoken.Claims;
- import io.jsonwebtoken.Jwts;
- import io.jsonwebtoken.SignatureAlgorithm;
- import org.springframework.security.core.userdetails.UserDetails;
-
- import java.io.Serializable;
- import java.util.Date;
- import java.util.HashMap;
- import java.util.Map;
-
- public class JwtTokenUtil implements Serializable {
- private String secret;
- private Long expiration;
- private String header;
-
- private String generateToken(Map<String, Object> claims) {
- Date expirationDate = new Date(System.currentTimeMillis() + expiration);
- return Jwts.builder().setClaims(claims).setExpiration(expirationDate).signWith(SignatureAlgorithm.HS512, secret).compact();
- }
-
- private Claims getClaimsFromToken(String token) {
- Claims claims;
- try {
- claims = Jwts.parser().setSigningKey(secret).parseClaimsJws(token).getBody();
-
- } catch (Exception e) {
- claims = null;
- }
- return claims;
- }
-
- public String generateToken(UserDetails userDetails) {
- Map<String, Object> claims = new HashMap<>(2);
- claims.put("sub", userDetails.getUsername());
- claims.put("created", new Date());
- return generateToken(claims);
-
- }
-
- public String getUsernameFromToken(String token) {
- String username;
- try {
- Claims claims = getClaimsFromToken(token);
- username = claims.getSubject();
-
- } catch (Exception e) {
- username = null;
-
- }
- return username;
-
- }
-
- public Boolean isTokenExpired(String token) {
- try {
- Claims claims = getClaimsFromToken(token);
- Date expiration = claims.getExpiration();
- return expiration.before(new Date());
- } catch (Exception e) {
- return false;
- }
- }
-
- public String refreshToken(String token) {
- String refreshedToken;
- try {
- Claims claims = getClaimsFromToken(token);
- claims.put("created", new Date());
- refreshedToken = generateToken(claims);
-
- } catch (Exception e) {
- refreshedToken = null;
-
- }
- return refreshedToken;
- }
-
- public Boolean validateToken(String token, UserDetails userDetails) {
- JwtUser user = (JwtUser) userDetails;
- String username = getUsernameFromToken(token);
- return (username.equals(user.getUsername()) && !isTokenExpired(token));
-
- }
-
- }
编写Filter 用来检测JWT
- package com.example.demo;
-
- import org.apache.commons.lang.StringUtils;
- import org.springframework.beans.factory.annotation.Autowired;
- import org.springframework.security.authentication.UsernamePasswordAuthenticationToken;
- import org.springframework.security.core.context.SecurityContextHolder;
- import org.springframework.security.core.userdetails.UserDetails;
- import org.springframework.security.core.userdetails.UserDetailsService;
- import org.springframework.security.web.authentication.WebAuthenticationDetailsSource;
- import org.springframework.stereotype.Component;
- import org.springframework.web.filter.OncePerRequestFilter;
-
- import javax.servlet.FilterChain;
- import javax.servlet.ServletException;
- import javax.servlet.http.HttpServletRequest;
- import javax.servlet.http.HttpServletResponse;
- import java.io.IOException;
-
- @Component
- public class JwtAuthenticationTokenFilter extends OncePerRequestFilter {
- @Autowired
- private UserDetailsService userDetailsService;
- @Autowired
- private JwtTokenUtil jwtTokenUtil;
-
- @Override
- protected void doFilterInternal(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, FilterChain filterChain) throws ServletException, IOException {
- String authHeader = httpServletRequest.getHeader(jwtTokenUtil.getHeader());
- if (authHeader != null && StringUtils.isNotEmpty(authHeader)) {
- String username = jwtTokenUtil.getUsernameFromToken(authHeader);
- if (username != null && SecurityContextHolder.getContext().getAuthentication() == null) {
- UserDetails userDetails = this.userDetailsService.loadUserByUsername(username);
- if (jwtTokenUtil.validateToken(authHeader, userDetails)) {
- UsernamePasswordAuthenticationToken authentication =
- new UsernamePasswordAuthenticationToken(userDetails,null,userDetails.getAuthorities());
- authentication.setDetails(new WebAuthenticationDetailsSource().buildDetails(httpServletRequest));
- SecurityContextHolder.getContext().setAuthentication(authentication);
-
- }
- }
- }
- filterChain.doFilter(httpServletRequest, httpServletResponse);
-
- }
- }
在上方代码中,编写userDetailsService,类,实现其验证过程
- package com.example.demo;
-
- import org.springframework.beans.factory.annotation.Autowired;
- import org.springframework.security.core.authority.SimpleGrantedAuthority;
- import org.springframework.security.core.userdetails.User;
- import org.springframework.security.core.userdetails.UserDetails;
- import org.springframework.security.core.userdetails.UserDetailsService;
- import org.springframework.security.core.userdetails.UsernameNotFoundException;
- import org.springframework.stereotype.Service;
-
- import javax.management.relation.Role;
- import java.util.List;
-
- @Service
- public class JwtUserDetailsServiceImpl implements UserDetailsService {
- @Autowired
- private UserMapper userMapper;
-
- @Override
- public UserDetails loadUserByUsername(String s) throws UsernameNotFoundException {
- User user = userMapper.selectByUserName(s);
- if (user == null) {
- throw new UsernameNotFoundException(String.format("'%s'.这个用户不存在", s));
-
- }
- List<SimpleGrantedAuthority> collect = user.getRoles().stream().map(Role::getRolename).map(SimpleGrantedAuthority::new).collect(Collectors.toList());
- return new JwtUser(user.getUsername(), user.getPassword(), user.getState(), collect);
-
- }
- }
编写登录业务的实现类 其login方法会返回一个JWTUtils 的token
- @Service
- public class UserServiceImpl implements UserService {
- @Autowired
- private UserMapper userMapper;
-
- @Autowired
- private AuthenticationManager authenticationManager;
-
- @Autowired
- private UserDetailsService userDetailsService;
-
- @Autowired
- private JwtTokenUtil jwtTokenUtil;
-
- public User findByUsername(String username) {
- User user = userMapper.selectByUserName(username);
- return user;
-
- }
-
- public RetResult login(String username, String password) throws AuthenticationException {
- UsernamePasswordAuthenticationToken upToken = new UsernamePasswordAuthenticationToken(username, password);
- final Authentication authentication = authenticationManager.authenticate(upToken);
- SecurityContextHolder.getContext().setAuthentication(authentication);
- UserDetails userDetails = userDetailsService.loadUserByUsername(username);
- return new RetResult(RetCode.SUCCESS.getCode(),jwtTokenUtil.generateToken(userDetails));
-
- }
- }
- @EnableGlobalMethodSecurity(prePostEnabled = true)
- @EnableWebSecurity
- public class WebSecurity extends WebSecurityConfigurerAdapter {
- @Autowired
- private UserDetailsService userDetailsService;
- @Autowired
- private JwtAuthenticationTokenFilter jwtAuthenticationTokenFilter;
-
- @Autowired
- public void configureAuthentication(AuthenticationManagerBuilder authenticationManagerBuilder) throws Exception {
- authenticationManagerBuilder.userDetailsService(this.userDetailsService).passwordEncoder(passwordEncoder());
-
- }
-
- @Bean(name = BeanIds.AUTHENTICATION_MANAGER)
-
- @Override
- public AuthenticationManager authenticationManagerBean() throws Exception {
- return super.authenticationManagerBean();
- }
-
- @Bean
- public PasswordEncoder passwordEncoder() {
- return new BCryptPasswordEncoder();
-
- }
-
- @Override
- protected void configure(HttpSecurity http) throws Exception {
- http.csrf().disable().sessionManagement().sessionCreationPolicy(SessionCreationPolicy.STATELESS)
- .and().authorizeRequests()
- .antMatchers(HttpMethod.OPTIONS, "/**").permitAll()
- .antMatchers("/auth/**").permitAll()
- .anyRequest().authenticated()
- .and().headers().cacheControl();
-
- http.addFilterBefore(jwtAuthenticationTokenFilter, UsernamePasswordAuthenticationFilter.class);
-
- ExpressionUrlAuthorizationConfigurer<HttpSecurity>.ExpressionInterceptUrlRegistry registry = http.authorizeRequests();
-
- registry.requestMatchers(CorsUtils::isPreFlightRequest).permitAll();
-
- }
-
- @Bean
- public CorsFilter corsFilter() {
- final UrlBasedCorsConfigurationSource urlBasedCorsConfigurationSource = new UrlBasedCorsConfigurationSource();
- final CorsConfiguration cors = new CorsConfiguration();
- cors.setAllowCredentials(true);
- cors.addAllowedOrigin("*");
- cors.addAllowedHeader("*");
- cors.addAllowedMethod("*");
- urlBasedCorsConfigurationSource.registerCorsConfiguration("/**", cors);
- return new CorsFilter(urlBasedCorsConfigurationSource);
-
- }
- }
运行,返回结果为token
这里配置SpringSecurity之JSON登录
这里需要重写UsernamePasswordAnthenticationFilter类,以及配置SpringSecurity
- public class CustomAuthenticationFilter extends UsernamePasswordAuthenticationFilter {
-
- @Override
- public Authentication attemptAuthentication(HttpServletRequest request, HttpServletResponse response) throws AuthenticationException {
-
- //attempt Authentication when Content-Type is json
- if(request.getContentType().equals(MediaType.APPLICATION_JSON_UTF8_VALUE)
- ||request.getContentType().equals(MediaType.APPLICATION_JSON_VALUE)){
-
- //use jackson to deserialize json
- ObjectMapper mapper = new ObjectMapper();
- UsernamePasswordAuthenticationToken authRequest = null;
- try (InputStream is = request.getInputStream()){
- AuthenticationBean authenticationBean = mapper.readValue(is,AuthenticationBean.class);
- authRequest = new UsernamePasswordAuthenticationToken(
- authenticationBean.getUsername(), authenticationBean.getPassword());
- }catch (IOException e) {
- e.printStackTrace();
- authRequest = new UsernamePasswordAuthenticationToken(
- "", "");
- }finally {
- setDetails(request, authRequest);
- return this.getAuthenticationManager().authenticate(authRequest);
- }
- }
-
- //transmit it to UsernamePasswordAuthenticationFilter
- else {
- return super.attemptAuthentication(request, response);
- }
- }
- }
- @Override
- protected void configure(HttpSecurity http) throws Exception {
- http
- .cors().and()
- .antMatcher("/**").authorizeRequests()
- .antMatchers("/", "/login**").permitAll()
- .anyRequest().authenticated()
- //这里必须要写formLogin(),不然原有的UsernamePasswordAuthenticationFilter不会出现,也就无法配置我们重新的UsernamePasswordAuthenticationFilter
- .and().formLogin().loginPage("/")
- .and().csrf().disable();
-
- //用重写的Filter替换掉原有的UsernamePasswordAuthenticationFilter
- http.addFilterAt(customAuthenticationFilter(),
- UsernamePasswordAuthenticationFilter.class);
- }
-
- //注册自定义的UsernamePasswordAuthenticationFilter
- @Bean
- CustomAuthenticationFilter customAuthenticationFilter() throws Exception {
- CustomAuthenticationFilter filter = new CustomAuthenticationFilter();
- filter.setAuthenticationSuccessHandler(new SuccessHandler());
- filter.setAuthenticationFailureHandler(new FailureHandler());
- filter.setFilterProcessesUrl("/login/self");
-
- //这句很关键,重用WebSecurityConfigurerAdapter配置的AuthenticationManager,不然要自己组装AuthenticationManager
- filter.setAuthenticationManager(authenticationManagerBean());
- return filter;
- }
这样就完成使用json登录SpringSecurity。
需要在Config 类中配置如下内容
- /**
- * 密码加密
- */
- @Bean
- public BCryptPasswordEncoder passwordEncoder(){
- return new BCryptPasswordEncoder();
- }
即,使用此方法,对密码进行加密, 在业务层的时候,使用此加密的方法
- @Service
- @Transactional
- public class UserServiceImpl implements UserService {
-
- @Resource
- private UserRepository userRepository;
-
- @Resource
- private BCryptPasswordEncoder bCryptPasswordEncoder; //注入bcryct加密
- @Override
- public User add(User user) {
- user.setPassword(bCryptPasswordEncoder.encode(user.getPassword())); //对密码进行加密
- User user2 = userRepository.save(user);
- return user2;
- }
- @Override
- public ResultInfo login(User user) {
- ResultInfo resultInfo=new ResultInfo();
- User user2 = userRepository.findByName(user.getName());
- if (user2==null) {
- resultInfo.setCode("-1");
- resultInfo.setMessage("用户名不存在");
- return resultInfo;
- }
-
- //判断密码是否正确
- if (!bCryptPasswordEncoder.matches(user.getPassword(),user2.getPassword())) {
- resultInfo.setCode("-1");
- resultInfo.setMessage("密码不正确");
- return resultInfo;
- }
- resultInfo.setMessage("登录成功");
- return resultInfo;
- }
- }
即,使用BCryptPasswordEncoder 对密码进行加密,保存数据库
这里使用数据库认证SpringSecurity
这里设计数据表
- @Configurable
- public class WebSecurityConfig extends WebSecurityConfigurerAdapter {
- @Autowired
- private UserService userService; // service 层注入
-
- @Bean
- PasswordEncoder passwordEncoder(){
- return new BCryptPasswordEncoder();
- }
-
- @Override
- protected void configure(AuthenticationManagerBuilder auth) throws Exception {
- // 参数传入Service,进行验证
- auth.userDetailsService(userService);
- }
-
- @Override
- protected void configure(HttpSecurity http) throws Exception {
- http.authorizeRequests()
- .antMatchers("/admin/**").hasRole("admin")
- .anyRequest().authenticated()
- .and()
- .formLogin()
- .loginProcessingUrl("/login").permitAll()
- .and()
- .csrf().disable();
- }
- }
这里着重配置SpringConfig
着重讲解了RBAC的权限配置,以及简单的使用SpringSecurity,以及使用SpringSecurity + JWT 完成前后端的分离,以及配置json登录,和密码加密方式。
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