Spring Security可用表达式对象的基类是SecurityExpressionRoot
表达式 | 描述 |
---|---|
hasRole([role] ) |
用户拥有制定的角色时返回true (Spring security 默认会带有ROLE_ 前缀),去除参考Remove the ROLE_ |
hasAnyRole([role1,role2]) |
用户拥有任意一个制定的角色时返回true |
hasAuthority([authority]) |
等同于hasRole ,但不会带有ROLE_ 前缀 |
hasAnyAuthority([auth1,auth2]) |
等同于hasAnyRole |
permitAll |
永远返回true |
denyAll |
永远返回false |
anonymous |
当前用户是anonymous 时返回true |
rememberMe |
当前勇士是rememberMe 用户返回true |
authentication |
当前登录用户的authentication 对象 |
fullAuthenticated |
当前用户既不是anonymous 也不是rememberMe 用户时返回true |
hasIpAddress('192.168.1.0/24')) |
请求发送的IP匹配时返回true |
URL安全表达式
onfig.antMatchers("/person/*").access("hasRole('ADMIN') or hasRole('USER')")
.anyRequest().authenticated();
这里我们定义了应用/person/*
URL的范围,该URL只针对拥有ADMIN
或者USER
权限的用户有效。
在Web安全表达式中引用bean
config.antMatchers("/person/*").access("hasRole('ADMIN') or hasRole('USER')")
.antMatchers("/person/{id}").access("@rbacService.checkUserId(authentication,#id)")
.anyRequest()
.access("@rbacService.hasPermission(request,authentication)");
RbacServiceImpl
@Component("rbacService")
@Slf4j
public class RbacServiceImpl implements RbacService {
/**
* uri匹配工具
*/
private AntPathMatcher antPathMatcher = new AntPathMatcher();
@Override
public boolean hasPermission(HttpServletRequest request, Authentication authentication) {
log.info("【RbacServiceImpl】 --hasPermission={}", authentication.getPrincipal());
Object principal = authentication.getPrincipal();
boolean hasPermission = false;
//有可能是匿名的anonymous
if (principal instanceof org.springframework.security.core.userdetails.UserDetails) {
//admin永远放回true
if (StringUtils.equals("admin", ((SysUser) principal).getUsername())) {
hasPermission = true;
} else {
//读取用户所拥有权限所有的URL 在这里全部返回true
Set urls = new HashSet<>();
for (String url : urls) {
if (antPathMatcher.match(url, request.getRequestURI())) {
hasPermission = true;
break;
}
}
}
}
return hasPermission;
}
public boolean checkUserId(Authentication authentication, int id) {
return true;
}
}
针对方法级别的访问控制比较复杂,Spring Security
提供了四种注解,分别是@PreAuthorize
, @PreFilter
, @PostAuthorize
, @PostFilter
使用method注解
@Configuration
@EnableGlobalMethodSecurity(prePostEnabled = true)
public class MerryyouSecurityConfig extends WebSecurityConfigurerAdapter {
@Bean
@Override
public AuthenticationManager authenticationManagerBean() throws Exception {
return super.authenticationManagerBean();
}
@Override
protected void configure(AuthenticationManagerBuilder auth) throws Exception {
auth.userDetailsService(userDetailsService).passwordEncoder(passwordEncoder());
}
@Bean
@ConditionalOnMissingBean(PasswordEncoder.class)
public PasswordEncoder passwordEncoder(){
return new BCryptPasswordEncoder();
}
/**
* 查询所有人员
*/
@PreAuthorize("hasRole('ADMIN')")
@ApiOperation(value = "获得person列表", notes = "")
@GetMapping(value = "/persons")
public List getPersons() {
return personService.findAll();
}
PreAuthorize
@PreAuthorize 注解适合进入方法前的权限验证
@PreAuthorize("hasRole('ADMIN')")
List findAll();
PostAuthorize
@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。Spring EL
提供 返回对象能够在表达式语言中获取返回的对象returnObject
。
@PostAuthorize("returnObject.name == authentication.name")
Person findOne(Integer id);
PreAuthorize 针对参数进行过滤
//当有多个对象是使用filterTarget进行标注
@PreFilter(filterTarget="ids", value="filterObject%2==0")
public void delete(List ids, List usernames) {
...
}
PostFilter 针对返回结果进行过滤
@PreAuthorize("hasRole('ADMIN')")
@PostFilter("filterObject.name == authentication.name")
List findAll();