type Exception report
message Request processing failed; nested exception is org.thymeleaf.exceptions.TemplateProcessingException: Exception evaluating SpringEL expression: "news.title" (/news/news_detail:4)
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: "news.title" (/news/news_detail:4) org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:982) org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:861) javax.servlet.http.HttpServlet.service(HttpServlet.java:622) org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:846) javax.servlet.http.HttpServlet.service(HttpServlet.java:729) org.springframework.orm.jpa.support.OpenEntityManagerInViewFilter.doFilterInternal(OpenEntityManagerInViewFilter.java:177) org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) org.springframework.web.filter.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:77) org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:85) org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
root cause
org.thymeleaf.exceptions.TemplateProcessingException: Exception evaluating SpringEL expression: "news.title" (/news/news_detail:4) 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.AbstractStandardTextChildModifierAttrProcessor.getText(AbstractStandardTextChildModifierAttrProcessor.java:68) org.thymeleaf.processor.attr.AbstractTextChildModifierAttrProcessor.getModifiedChildren(AbstractTextChildModifierAttrProcessor.java:59) org.thymeleaf.processor.attr.AbstractChildrenModifierAttrProcessor.processAttribute(AbstractChildrenModifierAttrProcessor.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.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:970) org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:861) javax.servlet.http.HttpServlet.service(HttpServlet.java:622) org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:846) javax.servlet.http.HttpServlet.service(HttpServlet.java:729) org.springframework.orm.jpa.support.OpenEntityManagerInViewFilter.doFilterInternal(OpenEntityManagerInViewFilter.java:177) org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) org.springframework.web.filter.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:77) org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:85) org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
root cause
org.springframework.expression.spel.SpelEvaluationException: EL1007E:(pos 0): Property or field 'title' cannot be found on null org.springframework.expression.spel.ast.PropertyOrFieldReference.readProperty(PropertyOrFieldReference.java:220) org.springframework.expression.spel.ast.PropertyOrFieldReference.getValueInternal(PropertyOrFieldReference.java:94) org.springframework.expression.spel.ast.PropertyOrFieldReference.access$000(PropertyOrFieldReference.java:46) org.springframework.expression.spel.ast.PropertyOrFieldReference$AccessorLValue.getValue(PropertyOrFieldReference.java:374) org.springframework.expression.spel.ast.CompoundExpression.getValueInternal(CompoundExpression.java:88) 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.AbstractStandardTextChildModifierAttrProcessor.getText(AbstractStandardTextChildModifierAttrProcessor.java:68) org.thymeleaf.processor.attr.AbstractTextChildModifierAttrProcessor.getModifiedChildren(AbstractTextChildModifierAttrProcessor.java:59) org.thymeleaf.processor.attr.AbstractChildrenModifierAttrProcessor.processAttribute(AbstractChildrenModifierAttrProcessor.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.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:970) org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:861) javax.servlet.http.HttpServlet.service(HttpServlet.java:622) org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:846) javax.servlet.http.HttpServlet.service(HttpServlet.java:729) org.springframework.orm.jpa.support.OpenEntityManagerInViewFilter.doFilterInternal(OpenEntityManagerInViewFilter.java:177) org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) org.springframework.web.filter.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:77) org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:85) org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
note The full stack trace of the root cause is available in the Apache Tomcat/8.0.28 logs.