java - 我们可以在spring的xml配置中使用hasPermission保护表达式吗？

Question

我们可以在 spring 配置 xml 文件中使用这样的东西吗:

<http auto-config="true" use-expressions="true" >

        <intercept-url pattern="/hardcopy/*" access="isAuthenticated() and hasPermission('tw')" />
    </http>

查看上面的代码和访问属性中显示 hasPermission 的行。可以这么用吗？

也与此问题相关: How to get hold of user details in custom expression handlers

当我尝试以这种方式使用它时，我收到此错误:

500 Unexpected error

java.lang.IllegalArgumentException: Failed to evaluate expression 'isAuthenticated() and hasPermission('tw')'
java.lang.IllegalArgumentException: Failed to evaluate expression 'isAuthenticated() and hasPermission('tw')' at org.springframework.security.access.expression.ExpressionUtils.evaluateAsBoolean(ExpressionUtils.java:13) at org.springframework.security.web.access.expression.WebExpressionVoter.vote(WebExpressionVoter.java:34) at org.springframework.security.web.access.expression.WebExpressionVoter.vote(WebExpressionVoter.java:18) at org.springframework.security.access.vote.AffirmativeBased.decide(AffirmativeBased.java:62) at org.springframework.security.access.intercept.AbstractSecurityInterceptor.beforeInvocation(AbstractSecurityInterceptor.java:206) at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:115) at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:84) at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) at org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:113) at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) at org.springframework.security.web.session.SessionManagementFilter.doFilter(SessionManagementFilter.java:103) at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) at org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:113) at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) at org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:54) at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) at org.springframework.security.web.savedrequest.RequestCacheAwareFilter.doFilter(RequestCacheAwareFilter.java:45) at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) at org.springframework.security.web.authentication.www.BasicAuthenticationFilter.doFilter(BasicAuthenticationFilter.java:150) at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) at org.springframework.security.web.authentication.AbstractAuthenticationProcessingFilter.doFilter(AbstractAuthenticationProcessingFilter.java:183) at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) at org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.java:105) at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) at org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:87) at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) at org.springframework.security.web.FilterChainProxy.doFilterInternal(FilterChainProxy.java:192) at org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:160) at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:346) at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:259) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.springframework.orm.hibernate3.support.OpenSessionInViewFilter.doFilterInternal(OpenSessionInViewFilter.java:233) at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at no.nhst.escenic.publication.servlet.PublicationResolverFilter.doFilter(PublicationResolverFilter.java:53) at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:346) at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:259) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:88) at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:99) at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:554) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298) at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:859) at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:588) at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489) at java.lang.Thread.run(Thread.java:722) Caused by: org.springframework.expression.spel.SpelEvaluationException: EL1004E:(pos 22): Method call: Method hasPermission(java.lang.String) cannot be found on org.springframework.security.web.access.expression.WebSecurityExpressionRoot type at org.springframework.expression.spel.ast.MethodReference.findAccessorForMethod(MethodReference.java:273) at org.springframework.expression.spel.ast.MethodReference.findAccessorForMethod(MethodReference.java:251) at org.springframework.expression.spel.ast.MethodReference.getValueInternal(MethodReference.java:194) at org.springframework.expression.spel.ast.SpelNodeImpl.getValue(SpelNodeImpl.java:134) at org.springframework.expression.spel.ast.OpAnd.getBooleanValue(OpAnd.java:51) at org.springframework.expression.spel.ast.OpAnd.getValueInternal(OpAnd.java:46) at org.springframework.expression.spel.ast.SpelNodeImpl.getTypedValue(SpelNodeImpl.java:102) at org.springframework.expression.spel.standard.SpelExpression.getValue(SpelExpression.java:98) at org.springframework.security.access.expression.ExpressionUtils.evaluateAsBoolean(ExpressionUtils.java:11) ... 59 more

请对错误提出任何建议？

Answer 1

您不必检查用户是否isAuthenticated()，检查相应的用户角色就足够了。因为未经身份验证，用户在安全上下文中不会拥有任何授予的权限。 而且只列出这样的角色就足够了:

access="ROLE_USER, ROLE_ADMIN"

编辑:

回到这个话题。从技术上讲，你想做的事情并没有错。您可以使用这些方法并将它们链接在一起。此链接提供了 Spring security 为此目的内置的所有表达式:http://static.springsource.org/spring-security/site/docs/3.0.x/reference/el-access.html 如果您使用自己的方法，我不知道它是如何处理的，因为我觉得没有必要研究它。