新版的spring boot切换版本老是报错，前段时间解决了，忘 了，重新搜索了一下，记录一下：
原文地址：https://blog.csdn.net/Mr_Mocha/article/details/97419945
在pom.xml文件中添加以下配置
<properties>
<thymeleaf.version>3.0.9.RELEASE</thymeleaf.version>
<!-- 布局功能的支持程序 thymeleaf3主程序 对应 layout2以上版本 -->
<!-- thymeleaf2 对应 layout1版本 -->
<thymeleaf-layout-dialect.version>2.3.0</thymeleaf-layout-dialect.version>
</properties>
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如何找到这两项的配置呢？[官方文档已经告诉我们了]
找到spring-boot-dependencies这个文件，在里面找对应的配置即可
报错！！！
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APPLICATION FAILED TO START
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Description:
An attempt was made to call the method org.thymeleaf.spring5.SpringTemplateEngine.setRenderHiddenMarkersBeforeCheckboxes(Z)V but it does not exist. Its class, org.thymeleaf.spring5.SpringTemplateEngine, is available from the following locations:
jar:file:/D:/OpenSources/MyRepository/org/thymeleaf/thymeleaf-spring5/3.0.9.RELEASE/thymeleaf-spring5-3.0.9.RELEASE.jar!/org/thymeleaf/spring5/SpringTemplateEngine.class
It was loaded from the following location:
file:/D:/OpenSources/MyRepository/org/thymeleaf/thymeleaf-spring5/3.0.9.RELEASE/thymeleaf-spring5-3.0.9.RELEASE.jar
Action:
Correct the classpath of your application so that it contains a single, compatible version of org.thymeleaf.spring5.SpringTemplateEngine
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解决方案：
<properties>
<springboot-thymeleaf.version>3.0.9.RELEASE</springboot-thymeleaf.version>
<thymeleaf-layout-dialect.version>2.3.0</thymeleaf-layout-dialect.version>
</properties>
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问题分析：
这里用的是org.springframework.boot下的spring-boot-starter-thymeleaf,使用<thymeleaf.version>做标签时可能与org.thymeleaf有冲突，导致包获取不正确
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原文链接：https://blog.csdn.net/Mr_Mocha/article/details/97419945