[redis] The type org.apache.commons.pool2.impl.GenericObjectPoolConfig cannot be resolved.It is indirectly referenced from required .class files 報錯解決方法

在導入與redis有關的項目時，經常報下面的錯誤：

The type org.apache.commons.pool2.impl.GenericObje1ctPoolConfig cannot be resolved.It is indirectly referenced from required .class files

經查，原來是缺少包，導入下面的包即可解決：

<dependency>
    <groupId>org.apache.commons</groupId>
    <artifactId>commons-pool2</artifactId>
    <version>2.4.2</version>
</dependency>