Springboot+Spring secuirty 后台菜单权限设计

2021-01-29 17:15

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标签:art   用户信息   real   获取用户信息   html   list   tpm   grant   exception   

背景:菜单和权限在系统中是非常重要的事情,在结合自己研究过的Spring security和项目前后端实践中对进行总结。

介绍:使用基于RBAC权限模型,针对角色分配不同的权限

技术图片

数据库设计:

系统菜单                                                系统角色                                              菜单角色表

 

技术图片      技术图片           技术图片             

  用户对应的角色                               用户信息

 技术图片                技术图片

技术:Spring security+jjwt

Spring security:是Spring 开源的权限管理框架,由一组过滤器链组成,对不同的访问进去拦截和控制,也可以自己实现权限拦截

spring security 的核心功能主要包括:

  • 认证 (你是谁)
  • 授权 (你能干什么)
  • 攻击防护 (防止伪造身份)

jjwt:是一个提供端到端的JWT创建和验证的Java库,可以生成加密的token,并可以从token反推出存放在token的一些信息(如用户账号)——参考官网https://jwt.io/introduction/

 

实现:通过UserDetailsService 和UserDetails 通过数据库获取用户信息如(权限,用户账号)

步骤一:

// 定义jjwt的用户的一些信息,在后面生成token时需要,并且Spring security要获取实现UserDetails 接口用户信息  
@Getter @AllArgsConstructor
public class SystemUser implements UserDetails { @JSONField(serialize = false) private final Long id; private final String username; @JSONField(serialize = false) private final String password; public Long getId() { return id; } private final String salt;
// 权限 @JSONField(serialize
= false) private final Collection authorities; @JSONField(serialize = false) @Override public boolean isAccountNonExpired() { return true; } @JSONField(serialize = false) @Override public boolean isAccountNonLocked() { return true; } @JSONField(serialize = false) @Override public boolean isCredentialsNonExpired() { return true; } @Override public boolean isEnabled() { return false; } @JSONField(serialize = false) @Override public String getPassword() { return password; } public Collection getRoles() { return authorities.stream().map(GrantedAuthority::getAuthority).collect(Collectors.toSet()); } }

 

步骤二:实现 UserDetailsService 接口,这里我使用mybatis查询数据库,通过用户账号获取数据库用户信息

public class SystemUserDetailsService implements UserDetailsService {

    @Autowired
    private ISysUserService userService;

    @Autowired
    private JwtPermissionService permissionService; // 获取用户角色的菜单权限

    @Override
    public UserDetails loadUserByUsername(String username) {
        SysUser user = userService.findByName(username);
        if (user == null) {
            throw new ServiceException("账号不存在");
        } else {
            if (user.getUserStatus().equals(Constants.OrganizationStatus.DISABLE)) {
                throw new ServiceException("账号已被禁用");
            }
            return createJwtUser(user);
        }
    }

    public UserDetails createJwtUser(SysUser user) {
        return new SystemUser(
                user.getId(),
                user.getUsername(),
                user.getPassword(),
                user.getSalt(),
                permissionService.mapToGrantedAuthorities(user),
                user.getCreateTime()
        );
    }
}

  

步骤三:JwtPermissionService 实现,请注意这是实现的虚假逻辑,具体的还要看业务逻辑

@Component
public class JwtPermissionService{

@Autowired
private IUsersRolesService usersRolesService;
@Autowired
private IRolesMenuService rolesMenuService;

public Collection mapToGrantedAuthorities(SysUser user){
// step 1 根据用户账号获取用户的角色
Set menu =usersRolesService.getRole(String userName);
// step 2 根据角色获取用户的菜单
SetmenuList=rolesMenuService.getMenu(Setrole);
 // step 3 获取菜单对应的menu_make 进行转换

return menuVos.stream().filter(x -> !StringUtils.isEmpty(x.getMenuMark())).map(
        result -> {
String permission =result.getMenuMark();

return new SimpleGrantedAuthority(permission);
 }
).collect(Collectors.toList());
}
}

 

 步骤4:定义Spring security  权限配置

@Configuration
@EnableWebSecurity
@EnableGlobalMethodSecurity(prePostEnabled = true)
public class SecurityConfig extends WebSecurityConfigurerAdapter {

@Autowired
private JwtTokenFilter tokenFilter;
@Autowired
public void configureGlobal(AuthenticationManagerBuilder auth) throws Exception {
auth
.userDetailsService(jwtUserDetailsService)
.passwordEncoder(passwordEncoderBean());
}
@Bean
GrantedAuthorityDefaults grantedAuthorityDefaults() {
// 去掉前缀
return new GrantedAuthorityDefaults("");
}

// 加密方式
@Bean
public PasswordEncoder passwordEncoderBean() {
return new BCryptPasswordEncoder();
}
@Bean
@Override
public AuthenticationManager authenticationManagerBean() throws Exception {
return super.authenticationManagerBean();
}// 权限拦截规则,千万不要.login() 这直接走表单验证了,会比较麻烦
@Override
protected void configure(HttpSecurity httpSecurity) throws Exception {

httpSecurity

// 禁用 CSRF
.csrf().disable()
// 不创建会话
.sessionManagement().sessionCreationPolicy(SessionCreationPolicy.STATELESS).and()
// 过滤请求
.authorizeRequests()
.antMatchers(
HttpMethod.GET,
"/*.html",
"/**/*.html",
"/**/*.css",
"/**/*.js"
).anonymous()

.antMatchers( HttpMethod.POST,"/auth/login).permitAll()
.antMatchers("/websocket/**").anonymous()
// 所有请求都需要认证
.anyRequest().authenticated()
// 防止iframe 造成跨域
.and().headers().frameOptions().disable();
// 添加自定义拦截器
httpSecurity
.addFilterBefore(
tokenFilter,UsernamePasswordAuthenticationFilter.class);
    }}

 

 步骤4:自定义拦截器,通过此拦截器, 前端访问时候头部要带"Authorization",通过token获取用户信息

@Component
public class JwtTokenFilter extends OncePerRequestFilter {
@Autowired
private UserDetailsService userDetailsService;
 
protected void doFilterInternal(HttpServletRequest request, HttpServletResponse response, FilterChain chain) throws ServletException, IOException {
String requestHeader = request.getHeader("Authorization");
String authToken=null;
if (requestHeader != null && requestHeader.startsWith("Bearer ")) {
authToken = requestHeader.substring(7);
String userName =Jwts.parser().setSigningKey(secret).parseClaimsJws(authToken ).getBody().getSubject();

}

if (username != null && SecurityContextHolder.getContext().getAuthentication() == null) {
SystemUser userDetails = (SystemUser ) this.userDetailsService.loadUserByUsername(username);
UsernamePasswordAuthenticationToken authentication = new UsernamePasswordAuthenticationToken(userDetails, null, userDetails.getAuthorities());
authentication.setDetails(new WebAuthenticationDetailsSource().buildDetails(request));
SecurityContextHolder.getContext().setAuthentication(authentication);
chain.doFilter(request, response);
}
}
}

 

步骤五:登录返回toekn 给前端

@Getter
@AllArgsConstructor
public class AuthenticationInfo implements Serializable {

private final String token;

private final JwtUser user;
}

// 登录构造器

@RequestMapping("auth") public class SecurityController{
@Autowired
@Qualifier("SystemUserDetailsService")
private UserDetailsService userDetailsService;
@PostMapping(value = "${jwt.auth.path}")
public AuthorizationUser login(@RequestParam("userName")String userName,@RequestParam("password")String password)) {
    final SystemUser jwtUser = (SystemUser ) userDetailsService.loadUserByUsername(userName);
    //获取用户的token,是否存在
Date expirationDate = new Date(createdDate.getTime() +864000);
    String token =Jwts.builder()
.setClaims(claims)
.setSubject()
.setIssuedAt(new Date)
.setExpiration(expirationDate)
.signWith(SignatureAlgorithm.HS512, secret)
.compact();

return new AuthenticationInfo(token, jwtUser));
}

}

 

步骤6 定义具有某个菜单的构造器,前端通过定义菜单标识跟后台@PreAuthorize 对应的权限进行关联起来,这样就可以形成对应的权限

@RequestMapping("/admin")
public class Demo {

@RequestMapping("/pageList")
@PreAuthorize("hasAnyRole(‘menu_mark’)")
public List pageList(){
return new ArrayList();
}
}

 

SystemUser 

Springboot+Spring secuirty 后台菜单权限设计

标签:art   用户信息   real   获取用户信息   html   list   tpm   grant   exception   

原文地址:https://www.cnblogs.com/uqing/p/12831065.html


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