Error starting ApplicationContext. To display the conditions report re-run your application with ‘debug‘ enabled. 2020-10-27 22:05:20.134 ERROR 10600 --- [ main] o.s.b.d.LoggingFailureAnalysisReporter : *************************** APPLICATION FAILED TO START *************************** Description: An attempt was made to call a method that does not exist. The attempt was made from the following location: org.springframework.boot.autoconfigure.thymeleaf.ThymeleafAutoConfiguration$ThymeleafDefaultConfiguration.templateEngine(ThymeleafAutoConfiguration.java:142) The following method did not exist: org.thymeleaf.spring5.SpringTemplateEngine.setRenderHiddenMarkersBeforeCheckboxes(Z)V The method‘s class, org.thymeleaf.spring5.SpringTemplateEngine, is available from the following locations: jar:file:/E:/java/Maven/javaMaven/org/thymeleaf/thymeleaf-spring5/3.0.9.RELEASE/thymeleaf-spring5-3.0.9.RELEASE.jar!/org/thymeleaf/spring5/SpringTemplateEngine.class The class hierarchy was loaded from the following locations: org.thymeleaf.spring5.SpringTemplateEngine: file:/E:/java/Maven/javaMaven/org/thymeleaf/thymeleaf-spring5/3.0.9.RELEASE/thymeleaf-spring5-3.0.9.RELEASE.jar org.thymeleaf.TemplateEngine: file:/E:/java/Maven/javaMaven/org/thymeleaf/thymeleaf/3.0.9.RELEASE/thymeleaf-3.0.9.RELEASE.jar Action: Correct the classpath of your application so that it contains a single, compatible version of org.thymeleaf.spring5.SpringTemplateEngine Process finished with exit code 1
解决办法:
<properties>
<java.version>11</java.version>
<!-- 布局功能的支持程序 thymeleaf3主程序 layout2以上版本 -->
<!-- thymeleaf2 layout1-->
<thymeleaf-spring5.version>3.0.9.RELEASE</thymeleaf-spring5.version>
<thymeleaf-layout-dialect.version>2.2.2</thymeleaf-layout-dialect.version>
</properties>
原文：https://www.cnblogs.com/Courage129/p/13888087.html