[redis] The type org.apache.commons.pool2.impl.GenericObjectPoolConfig cannot be resolved.It is indirectly referenced from required .class files 报错解决方法

在导入与redis有关的项目时，经常报下面的错误：

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

经查，原来是缺少包，导入下面的包即可解决：

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