The dependencies of some of the

2.3.0.RELEASE 升级为 2.6.5之后出现以下问题：

......
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APPLICATION FAILED TO START
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Description:

The dependencies of some of the beans in the application context form a cycle:

┌──->──┐
|  com.github.pagehelper.autoconfigure.PageHelperAutoConfiguration

错误的配置如下：

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.6.5</version>
        <relativePath /> <!-- lookup parent from repository -->
    </parent>
        <!--如果一定要用2.6.5，这里的分页器可能要用别的版本-->
        <dependency>
            <groupId>com.github.pagehelper</groupId>
            <artifactId>pagehelper-spring-boot-starter</artifactId>
            <version>1.2.12</version>
        </dependency>

正确的配置如下：

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.3.0.RELEASE</version>
        <relativePath /> <!-- lookup parent from repository -->
    </parent>
        <dependency>
            <groupId>com.github.pagehelper</groupId>
            <artifactId>pagehelper-spring-boot-starter</artifactId>
            <version>1.2.12</version>
        </dependency>