NoClassDefFoundError：org/apache/poi/util/POILogFactory

参考：https://poi.apache.org/components/index.html#components

Word DOC需要加入依赖

  <dependency>
            <groupId>org.apache.poi</groupId>
            <artifactId>poi-scratchpad</artifactId>
            <version>5.2.3</version>
        </dependency>

Excel XLS需要加入依赖

 <dependency>
            <groupId>org.apache.poi</groupId>
            <artifactId>poi</artifactId>
            <version>5.2.2</version>
        </dependency>

Word DOCX，Excel XLSX 需要加入依赖

<dependency>
            <groupId>org.apache.poi</groupId>
            <artifactId>poi-ooxml</artifactId>
        </dependency>