Помощ при програмиране, отговори на въпроси / пружина / Изключение, оценяващо израз на SpringEL - пролет, изключение, разрешение, израз, тилемеа

Изключение, оценяващо израз на SpringEL - пролет, изключение, разрешение, изразяване, тилемеаф

Опитвам се да използвам тилелеаф заедно с пролетта и имам проблем да анализирам следното header.html фрагмент:

<!DOCTYPE html>
<html>
<head>
</head>
<body>
<div class="navbar navbar-inverse navbar-fixed-top" th:fragment="header">
<div class="container">
<div class="navbar-header">
<button type="button" class="navbar-toggle" data-toggle="collapse" data-target=".nav-collapse">
<span class="icon-bar"></span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
</button>
<a class="navbar-brand" href="#">My project</a>
</div>
<div class="navbar-collapse collapse">
<ul class="nav navbar-nav">
<li class="active"><a href="#" th:href="@{/}">Home</a></li>
<li><a href="#" th:href="@{/message}">Messages</a></li>
<li><a href="#" th:href="@{/task}">Tasks</a></li>
</ul>
<ul class="nav navbar-nav navbar-right">
<li th:if="${#authorization.expression("!isAuthenticated()")}">
<a href="/signin" th:href="@{/signin}">Sign in</a>
</li>
<li th:if="${#authorization.expression("isAuthenticated()")}">
<a href="/logout" th:href="@{/logout}">Logout</a>
</li>
</ul>
</div>
</div>
</div>
</body>
</html>

Изключението се връща, когато се опитвате да анализирате фрагмента и израза. Изключението е:

HTTP Status 500 - Request processing failed; nested exception is org.thymeleaf.exceptions.TemplateProcessingException: Exception evaluating SpringEL expression: "#authorization.expression("!isAuthenticated()")" (fragments/header:25)


message Request processing failed; nested exception is org.thymeleaf.exceptions.TemplateProcessingException: Exception evaluating SpringEL expression: "#authorization.expression("!isAuthenticated()")" (fragments/header:25)

description The server encountered an internal error that prevented it from fulfilling this request.

exception

org.springframework.web.util.NestedServletException: Request processing failed; nested exception is org.thymeleaf.exceptions.TemplateProcessingException: Exception evaluating SpringEL expression: "#authorization.expression("!isAuthenticated()")" (fragments/header:25)
org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:978)
org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:857)
javax.servlet.http.HttpServlet.service(HttpServlet.java:622)
org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:842)
javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:316)
org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:126)
org.springframework.security.web.access.intercept.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:90)
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330)
org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:114)
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330)
org.springframework.security.web.session.SessionManagementFilter.doFilter(SessionManagementFilter.java:122)
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330)
org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:111)
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330)
org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:169)
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330)
org.springframework.security.web.savedrequest.RequestCacheAwareFilter.doFilter(RequestCacheAwareFilter.java:48)
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330)
org.springframework.security.web.authentication.AbstractAuthenticationProcessingFilter.doFilter(AbstractAuthenticationProcessingFilter.java:205)
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330)
org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.java:120)
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330)
org.springframework.security.web.csrf.CsrfFilter.doFilterInternal(CsrfFilter.java:96)
org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330)
org.springframework.security.web.header.HeaderWriterFilter.doFilterInternal(HeaderWriterFilter.java:64)
org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330)
org.springframework.security.web.context.request.async.WebAsyncManagerIntegrationFilter.doFilterInternal(WebAsyncManagerIntegrationFilter.java:53)
org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330)
org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:91)
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330)
org.springframework.security.web.FilterChainProxy.doFilterInternal(FilterChainProxy.java:213)
org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:176)
org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:344)
org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:261)
root cause

org.thymeleaf.exceptions.TemplateProcessingException: Exception evaluating SpringEL expression: "#authorization.expression("!isAuthenticated()")" (fragments/header:25)
org.thymeleaf.spring4.expression.SpelVariableExpressionEvaluator.evaluate(SpelVariableExpressionEvaluator.java:161)
org.thymeleaf.standard.expression.VariableExpression.executeVariable(VariableExpression.java:154)
org.thymeleaf.standard.expression.SimpleExpression.executeSimple(SimpleExpression.java:59)
org.thymeleaf.standard.expression.Expression.execute(Expression.java:103)
org.thymeleaf.standard.expression.Expression.execute(Expression.java:133)
org.thymeleaf.standard.expression.Expression.execute(Expression.java:120)
org.thymeleaf.standard.processor.attr.AbstractStandardConditionalVisibilityAttrProcessor.isVisible(AbstractStandardConditionalVisibilityAttrProcessor.java:66)
org.thymeleaf.processor.attr.AbstractConditionalVisibilityAttrProcessor.processAttribute(AbstractConditionalVisibilityAttrProcessor.java:59)
org.thymeleaf.processor.attr.AbstractAttrProcessor.doProcess(AbstractAttrProcessor.java:87)
org.thymeleaf.processor.AbstractProcessor.process(AbstractProcessor.java:212)
org.thymeleaf.dom.Node.applyNextProcessor(Node.java:1017)
org.thymeleaf.dom.Node.processNode(Node.java:972)
org.thymeleaf.dom.NestableNode.computeNextChild(NestableNode.java:695)
org.thymeleaf.dom.NestableNode.doAdditionalProcess(NestableNode.java:668)
org.thymeleaf.dom.Node.processNode(Node.java:990)
org.thymeleaf.dom.NestableNode.computeNextChild(NestableNode.java:695)
org.thymeleaf.dom.NestableNode.doAdditionalProcess(NestableNode.java:668)
org.thymeleaf.dom.Node.processNode(Node.java:990)
org.thymeleaf.dom.NestableNode.computeNextChild(NestableNode.java:695)
org.thymeleaf.dom.NestableNode.doAdditionalProcess(NestableNode.java:668)
org.thymeleaf.dom.Node.processNode(Node.java:990)
org.thymeleaf.dom.NestableNode.computeNextChild(NestableNode.java:695)
org.thymeleaf.dom.NestableNode.doAdditionalProcess(NestableNode.java:668)
org.thymeleaf.dom.Node.processNode(Node.java:990)
org.thymeleaf.dom.NestableNode.computeNextChild(NestableNode.java:695)
org.thymeleaf.dom.NestableNode.doAdditionalProcess(NestableNode.java:668)
org.thymeleaf.dom.Node.processNode(Node.java:990)
org.thymeleaf.dom.NestableNode.computeNextChild(NestableNode.java:695)
org.thymeleaf.dom.NestableNode.doAdditionalProcess(NestableNode.java:668)
org.thymeleaf.dom.Node.processNode(Node.java:990)
org.thymeleaf.dom.NestableNode.computeNextChild(NestableNode.java:695)
org.thymeleaf.dom.NestableNode.doAdditionalProcess(NestableNode.java:668)
org.thymeleaf.dom.Node.processNode(Node.java:990)
org.thymeleaf.dom.Document.process(Document.java:93)
org.thymeleaf.TemplateEngine.process(TemplateEngine.java:1155)
org.thymeleaf.TemplateEngine.process(TemplateEngine.java:1060)
org.thymeleaf.TemplateEngine.process(TemplateEngine.java:1011)
org.thymeleaf.spring4.view.ThymeleafView.renderFragment(ThymeleafView.java:335)
org.thymeleaf.spring4.view.ThymeleafView.render(ThymeleafView.java:190)
org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1244)
org.springframework.web.servlet.DispatcherServlet.processDispatchResult(DispatcherServlet.java:1027)
org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:971)
org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:893)
org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:966)
org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:857)
javax.servlet.http.HttpServlet.service(HttpServlet.java:622)
org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:842)
javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:316)
org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:126)
org.springframework.security.web.access.intercept.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:90)
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330)
org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:114)
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330)
org.springframework.security.web.session.SessionManagementFilter.doFilter(SessionManagementFilter.java:122)
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330)
org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:111)
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330)
org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:169)
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330)
org.springframework.security.web.savedrequest.RequestCacheAwareFilter.doFilter(RequestCacheAwareFilter.java:48)
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330)
org.springframework.security.web.authentication.AbstractAuthenticationProcessingFilter.doFilter(AbstractAuthenticationProcessingFilter.java:205)
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330)
org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.java:120)
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330)
org.springframework.security.web.csrf.CsrfFilter.doFilterInternal(CsrfFilter.java:96)
org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330)
org.springframework.security.web.header.HeaderWriterFilter.doFilterInternal(HeaderWriterFilter.java:64)
org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330)
org.springframework.security.web.context.request.async.WebAsyncManagerIntegrationFilter.doFilterInternal(WebAsyncManagerIntegrationFilter.java:53)
org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330)
org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:91)
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330)
org.springframework.security.web.FilterChainProxy.doFilterInternal(FilterChainProxy.java:213)
org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:176)
org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:344)
org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:261)
root cause

org.springframework.expression.spel.SpelEvaluationException: EL1011E:(pos 15): Method call: Attempted to call method expression(java.lang.String) on null context object
org.springframework.expression.spel.ast.MethodReference.throwIfNotNullSafe(MethodReference.java:144)
org.springframework.expression.spel.ast.MethodReference.getValueRef(MethodReference.java:73)
org.springframework.expression.spel.ast.CompoundExpression.getValueRef(CompoundExpression.java:66)
org.springframework.expression.spel.ast.CompoundExpression.getValueInternal(CompoundExpression.java:87)
org.springframework.expression.spel.ast.SpelNodeImpl.getValue(SpelNodeImpl.java:120)
org.springframework.expression.spel.standard.SpelExpression.getValue(SpelExpression.java:267)
org.thymeleaf.spring4.expression.SpelVariableExpressionEvaluator.evaluate(SpelVariableExpressionEvaluator.java:139)
org.thymeleaf.standard.expression.VariableExpression.executeVariable(VariableExpression.java:154)
org.thymeleaf.standard.expression.SimpleExpression.executeSimple(SimpleExpression.java:59)
org.thymeleaf.standard.expression.Expression.execute(Expression.java:103)
org.thymeleaf.standard.expression.Expression.execute(Expression.java:133)
org.thymeleaf.standard.expression.Expression.execute(Expression.java:120)
org.thymeleaf.standard.processor.attr.AbstractStandardConditionalVisibilityAttrProcessor.isVisible(AbstractStandardConditionalVisibilityAttrProcessor.java:66)
org.thymeleaf.processor.attr.AbstractConditionalVisibilityAttrProcessor.processAttribute(AbstractConditionalVisibilityAttrProcessor.java:59)
org.thymeleaf.processor.attr.AbstractAttrProcessor.doProcess(AbstractAttrProcessor.java:87)
org.thymeleaf.processor.AbstractProcessor.process(AbstractProcessor.java:212)
org.thymeleaf.dom.Node.applyNextProcessor(Node.java:1017)
org.thymeleaf.dom.Node.processNode(Node.java:972)
org.thymeleaf.dom.NestableNode.computeNextChild(NestableNode.java:695)
org.thymeleaf.dom.NestableNode.doAdditionalProcess(NestableNode.java:668)
org.thymeleaf.dom.Node.processNode(Node.java:990)
org.thymeleaf.dom.NestableNode.computeNextChild(NestableNode.java:695)
org.thymeleaf.dom.NestableNode.doAdditionalProcess(NestableNode.java:668)
org.thymeleaf.dom.Node.processNode(Node.java:990)
org.thymeleaf.dom.NestableNode.computeNextChild(NestableNode.java:695)
org.thymeleaf.dom.NestableNode.doAdditionalProcess(NestableNode.java:668)
org.thymeleaf.dom.Node.processNode(Node.java:990)
org.thymeleaf.dom.NestableNode.computeNextChild(NestableNode.java:695)
org.thymeleaf.dom.NestableNode.doAdditionalProcess(NestableNode.java:668)
org.thymeleaf.dom.Node.processNode(Node.java:990)
org.thymeleaf.dom.NestableNode.computeNextChild(NestableNode.java:695)
org.thymeleaf.dom.NestableNode.doAdditionalProcess(NestableNode.java:668)
org.thymeleaf.dom.Node.processNode(Node.java:990)
org.thymeleaf.dom.NestableNode.computeNextChild(NestableNode.java:695)
org.thymeleaf.dom.NestableNode.doAdditionalProcess(NestableNode.java:668)
org.thymeleaf.dom.Node.processNode(Node.java:990)
org.thymeleaf.dom.NestableNode.computeNextChild(NestableNode.java:695)
org.thymeleaf.dom.NestableNode.doAdditionalProcess(NestableNode.java:668)
org.thymeleaf.dom.Node.processNode(Node.java:990)
org.thymeleaf.dom.Document.process(Document.java:93)
org.thymeleaf.TemplateEngine.process(TemplateEngine.java:1155)
org.thymeleaf.TemplateEngine.process(TemplateEngine.java:1060)
org.thymeleaf.TemplateEngine.process(TemplateEngine.java:1011)
org.thymeleaf.spring4.view.ThymeleafView.renderFragment(ThymeleafView.java:335)
org.thymeleaf.spring4.view.ThymeleafView.render(ThymeleafView.java:190)
org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1244)
org.springframework.web.servlet.DispatcherServlet.processDispatchResult(DispatcherServlet.java:1027)
org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:971)
org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:893)
org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:966)
org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:857)
javax.servlet.http.HttpServlet.service(HttpServlet.java:622)
org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:842)
javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:316)
org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:126)
org.springframework.security.web.access.intercept.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:90)
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330)
org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:114)
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330)
org.springframework.security.web.session.SessionManagementFilter.doFilter(SessionManagementFilter.java:122)
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330)
org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:111)
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330)
org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:169)
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330)
org.springframework.security.web.savedrequest.RequestCacheAwareFilter.doFilter(RequestCacheAwareFilter.java:48)
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330)
org.springframework.security.web.authentication.AbstractAuthenticationProcessingFilter.doFilter(AbstractAuthenticationProcessingFilter.java:205)
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330)
org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.java:120)
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330)
org.springframework.security.web.csrf.CsrfFilter.doFilterInternal(CsrfFilter.java:96)
org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330)
org.springframework.security.web.header.HeaderWriterFilter.doFilterInternal(HeaderWriterFilter.java:64)
org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330)
org.springframework.security.web.context.request.async.WebAsyncManagerIntegrationFilter.doFilterInternal(WebAsyncManagerIntegrationFilter.java:53)
org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330)
org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:91)
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330)
org.springframework.security.web.FilterChainProxy.doFilterInternal(FilterChainProxy.java:213)
org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:176)
org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:344)
org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:261)

Какво не е наред? Изпуснах ли нещо в конфигурация на тилелеа?

Отговори:

1 за отговор № 1

Проблемът беше, че не включих диалекта на SpringSecurity в Template Engine:

<bean id="templateEngine" class="org.thymeleaf.spring3.SpringTemplateEngine">
...
<property name="additionalDialects">
<set>
<!-- Note the package would change to "springsecurity3" if you are using that version -->
<bean class="org.thymeleaf.extras.springsecurity4.dialect.SpringSecurityDialect"/>
</set>
</property>
...
</bean>

След като го коригирате, всичко работи.

0 за отговор № 2

Правилният начин да се отрече експресията на тилемията е просто да се добави дума, която не е пред нея:

 th:if="not ${#authorization.expression("isAuthenticated()")}"

или като друг пример:

th:if="${not #lists.isEmpty(pager)}"

Вярвам, че това е това, което търсите.

0 за отговор № 3

Използване на пояснения:

    @Configuration
@EnableWebMvc
public class WebMvcConfig extends WebMvcConfigurerAdapter {
...
@Bean
public SpringTemplateEngine templateEngine() {
SpringTemplateEngine templateEngine = new SpringTemplateEngine();
...
templateEngine.addDialect(new SpringSecurityDialect());
return templateEngine;
}