When springboot integrates thymeleaf and springsecurity, the instructional video lets us introduce the following dependencies, and then attributes such as sec:authorize do not work
ps.教学视频的springboot版本为1.5.x
<dependency>
<groupId>org.thymeleaf.extras</groupId>
<artifactId>thymeleaf-extras-springsecurity4</artifactId>
<version>3.0.2.RELEASE</version>
</dependency>
springboot2.x后，springsecurity版本升级到5, Therefore, just modify the springsecurity version
<dependency>
<groupId>org.thymeleaf.extras</groupId>
<artifactId>thymeleaf-extras-springsecurity5</artifactId>
<version>3.0.4.RELEASE</version>
</dependency>
Also modify here
<html xmlns:th="http://www.thymeleaf.org"
xmlns:sec="http://www.thymeleaf.org/thymeleaf-extras-springsecurity5">
This article refers to the problem that sec:authorize is invalid after SpringBoot 2.1.4 integrates thymeleaf and springsecurity , and the pro-test is valid