org.thymeleaf.exceptions.TemplateProcessingException: Exception evaluating SpringEL expression解决方案

本文探讨了Thymeleaf在处理SpringEL表达式时遇到的问题,具体表现为无法从后台获取bbsUser.bbsUserName的值。通过将BbsUser对象从session中取出并重新设置到request中,成功解决了此问题。

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看看thymeleaf标签是不是没有接收到后台传递过来的值

Caused by: org.thymeleaf.exceptions.TemplateProcessingException: Exception evaluating SpringEL expression: "bbsUser.bbsUserName" (template: "invitation/hobby_invitation_type" - line 74, col 43) at org.thymeleaf.spring5.expression.SPELVariableExpressionEvaluator.evaluate(SPELVariableExpressionEvaluator.java:290) at org.thymeleaf.standard.expression.VariableExpression.executeVariableExpression(VariableExpression.java:166) at org.thymeleaf.standard.expression.SimpleExpression.executeSimple(SimpleExpression.java:66) at org.thymeleaf.standard.expression.Expression.execute(Expression.java:109) at org.thymeleaf.standard.expression.Expression.execute(Expression.java:138) at org.thymeleaf.standard.processor.AbstractStandardExpressionAttributeTagProcessor.doProcess(AbstractStandardExpressionAttributeTagProcessor.java:144) at org.thymeleaf.processor.element.AbstractAttributeTagProcessor.doProcess(AbstractAttributeTagProcessor.java:74) at org.thymeleaf.processor.element.AbstractElementTagProcessor.process(AbstractElementTagProcessor.java:95) at org.thymeleaf.util.ProcessorConfigurationUtils$ElementTagProcessorWrapper.process(ProcessorConfigurationUtils.java:633) at org.thymeleaf.engine.ProcessorTemplateHandler.handleOpenElement(ProcessorTemplateHandler.java:1314) at org.thymeleaf.engine.TemplateHandlerAdapterMarkupHandler.handleOpenElementEnd(TemplateHandlerAdapterMarkupHandler.java:304)

 

BbsUser bbsUser  = (BbsUser) request.getSession().getAttribute("USER");
request.setAttribute("bbsUser",bbsUser);

添加之后即可解决

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