本篇文章主要介紹了java中自訂Spring Security權限控制管理範例(實戰篇) ,具有一定的參考價值,有興趣的小夥伴們可以參考一下。
背景描述
專案中需要做細粒的權限控制,細微至url + httpmethod (滿足restful,例如: http://www.php.cn /, 某些角色只能查看(HTTP GET), 而無權進行增改刪(POST, PUT, DELETE))。
表設計
為避嫌,只列出要用到的關鍵字段,其餘敬請自行腦補。
1.admin_user 管理員使用者表, 關鍵欄位( id, role_id )。
2.t_role 角色表, 關鍵欄位( id, privilege_id )。
3.t_privilege 權限表, 關鍵字段( id, url, method )
三個表的關聯關係就不用多說了吧,看字段一眼就能看出。
實現前分析
我們可以逆向思考:
#要實現我們的需求,最關鍵的一步就是讓Spring Security的AccessDecisionManager來判斷所請求的url + httpmethod 是否符合我們資料庫中的設定。然而,AccessDecisionManager並沒有來判定類似需求的相關Voter, 因此,我們需要自訂一個Voter的實作(預設註冊的AffirmativeBased的策略是只要有Voter投出ACCESS_GRANTED票,則判定為通過,這也正符合我們的需求)。實作voter後,有一個關鍵參數(Collection
總結一下思路步驟:
#1.自訂voter實作。
2.自訂ConfigAttribute實作。
3.自訂SecurityMetadataSource實作。
專案實戰1.自訂GrantedAuthority實作UrlGrantedAuthority.java
#
public class UrlGrantedAuthority implements GrantedAuthority { private final String httpMethod; private final String url; public UrlGrantedAuthority(String httpMethod, String url) { this.httpMethod = httpMethod; this.url = url; } @Override public String getAuthority() { return url; } public String getHttpMethod() { return httpMethod; } public String getUrl() { return url; } @Override public boolean equals(Object o) { if (this == o) return true; if (o == null || getClass() != o.getClass()) return false; UrlGrantedAuthority target = (UrlGrantedAuthority) o; if (httpMethod.equals(target.getHttpMethod()) && url.equals(target.getUrl())) return true; return false; } @Override public int hashCode() { int result = httpMethod != null ? httpMethod.hashCode() : 0; result = 31 * result + (url != null ? url.hashCode() : 0); return result; } }
2.自訂認證使用者實例
public class SystemUser implements UserDetails { private final Admin admin; private List<MenuOutput> menuOutputList; private final List<GrantedAuthority> grantedAuthorities; public SystemUser(Admin admin, List<AdminPrivilege> grantedPrivileges, List<MenuOutput> menuOutputList) { this.admin = admin; this.grantedAuthorities = grantedPrivileges.stream().map(it -> { String method = it.getMethod() != null ? it.getMethod().getLabel() : null; return new UrlGrantedAuthority(method, it.getUrl()); }).collect(Collectors.toList()); this.menuOutputList = menuOutputList; } @Override public Collection<? extends GrantedAuthority> getAuthorities() { return this.grantedAuthorities; } @Override public String getPassword() { return admin.getPassword(); } @Override public String getUsername() { return null; } @Override public boolean isAccountNonExpired() { return true; } @Override public boolean isAccountNonLocked() { return true; } @Override public boolean isCredentialsNonExpired() { return true; } @Override public boolean isEnabled() { return true; } public Long getId() { return admin.getId(); } public Admin getAdmin() { return admin; } public List<MenuOutput> getMenuOutputList() { return menuOutputList; } public String getSalt() { return admin.getSalt(); } }
3.自訂UrlConfigAttribute實作
#
public class UrlConfigAttribute implements ConfigAttribute { private final HttpServletRequest httpServletRequest; public UrlConfigAttribute(HttpServletRequest httpServletRequest) { this.httpServletRequest = httpServletRequest; } @Override public String getAttribute() { return null; } public HttpServletRequest getHttpServletRequest() { return httpServletRequest; } }
4.自訂SecurityMetadataSource實作
#
public class UrlFilterInvocationSecurityMetadataSource implements FilterInvocationSecurityMetadataSource { @Override public Collection<ConfigAttribute> getAttributes(Object object) throws IllegalArgumentException { final HttpServletRequest request = ((FilterInvocation) object).getRequest(); Set<ConfigAttribute> allAttributes = new HashSet<>(); ConfigAttribute configAttribute = new UrlConfigAttribute(request); allAttributes.add(configAttribute); return allAttributes; } @Override public Collection<ConfigAttribute> getAllConfigAttributes() { return null; } @Override public boolean supports(Class<?> clazz) { return FilterInvocation.class.isAssignableFrom(clazz); } }
5.自訂voter實作
public class UrlMatchVoter implements AccessDecisionVoter<Object> { @Override public boolean supports(ConfigAttribute attribute) { if (attribute instanceof UrlConfigAttribute) return true; return false; } @Override public boolean supports(Class<?> clazz) { return true; } @Override public int vote(Authentication authentication, Object object, Collection<ConfigAttribute> attributes) { if(authentication == null) { return ACCESS_DENIED; } Collection<? extends GrantedAuthority> authorities = authentication.getAuthorities(); for (ConfigAttribute attribute : attributes) { if (!(attribute instanceof UrlConfigAttribute)) continue; UrlConfigAttribute urlConfigAttribute = (UrlConfigAttribute) attribute; for (GrantedAuthority authority : authorities) { if (!(authority instanceof UrlGrantedAuthority)) continue; UrlGrantedAuthority urlGrantedAuthority = (UrlGrantedAuthority) authority; if (StringUtils.isBlank(urlGrantedAuthority.getAuthority())) continue; //如果数据库的method字段为null,则默认为所有方法都支持 String httpMethod = StringUtils.isNotBlank(urlGrantedAuthority.getHttpMethod()) ? urlGrantedAuthority.getHttpMethod() : urlConfigAttribute.getHttpServletRequest().getMethod(); //用Spring已经实现的AntPathRequestMatcher进行匹配,这样我们数据库中的url也就支持ant风格的配置了(例如:/xxx/user/**) AntPathRequestMatcher antPathRequestMatcher = new AntPathRequestMatcher(urlGrantedAuthority.getAuthority(), httpMethod); if (antPathRequestMatcher.matches(urlConfigAttribute.getHttpServletRequest())) return ACCESS_GRANTED; } } return ACCESS_ABSTAIN; } }
6.自訂FilterSecurityInterceptor實作
public class UrlFilterSecurityInterceptor extends FilterSecurityInterceptor { public UrlFilterSecurityInterceptor() { super(); } @Override public void init(FilterConfig arg0) throws ServletException { super.init(arg0); } @Override public void destroy() { super.destroy(); } @Override public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException { super.doFilter(request, response, chain); } @Override public FilterInvocationSecurityMetadataSource getSecurityMetadataSource() { return super.getSecurityMetadataSource(); } @Override public SecurityMetadataSource obtainSecurityMetadataSource() { return super.obtainSecurityMetadataSource(); } @Override public void setSecurityMetadataSource(FilterInvocationSecurityMetadataSource newSource) { super.setSecurityMetadataSource(newSource); } @Override public Class<?> getSecureObjectClass() { return super.getSecureObjectClass(); } @Override public void invoke(FilterInvocation fi) throws IOException, ServletException { super.invoke(fi); } @Override public boolean isObserveOncePerRequest() { return super.isObserveOncePerRequest(); } @Override public void setObserveOncePerRequest(boolean observeOncePerRequest) { super.setObserveOncePerRequest(observeOncePerRequest); } }
設定文件關鍵配置
<security:http> ... <security:custom-filter ref="filterSecurityInterceptor" before="FILTER_SECURITY_INTERCEPTOR" /> </security:http> <security:authentication-manager alias="authenticationManager"> <security:authentication-provider ref="daoAuthenticationProvider"/> </security:authentication-manager> <bean id="accessDecisionManager" class="org.springframework.security.access.vote.AffirmativeBased"> <constructor-arg> <list> <bean id="authenticatedVoter" class="org.springframework.security.access.vote.AuthenticatedVoter" /> <bean id="roleVoter" class="org.springframework.security.access.vote.RoleVoter" /> <bean id="urlMatchVoter" class="com.mobisist.app.security.access.voter.UrlMatchVoter" /> </list> </constructor-arg> </bean> <bean id="securityMetadataSource" class="com.mobisist.app.security.access.UrlFilterInvocationSecurityMetadataSource" /> <bean id="filterSecurityInterceptor" class="com.mobisist.app.security.access.UrlFilterSecurityInterceptor"> <property name="authenticationManager" ref="authenticationManager"/> <property name="accessDecisionManager" ref="accessDecisionManager"/> <property name="securityMetadataSource" ref="securityMetadataSource" /> </bean>
好啦,接下來享受你的Spring Security權限控制之旅吧。自訂Spring Security權限控制管理範例(實戰篇)的內容,更多相關內容請關注PHP中文網(www.php.cn)!