要使 OOXML 工作，您需要与 POI jar 分开打包的 POI-OOXML jar.

For OOXML to work you need the POI-OOXML jar which is separately packaged from the POI jar.

从以下位置下载 POI-OOXML jar -

Download the POI-OOXML jar from the following location -

http://repo1.maven.org/maven2/org/apache/poi/poi-ooxml/3.11/poi-ooxml-3.11.jar

对于 Maven2 添加以下依赖项 -

For Maven2 add the below dependency -

<dependency>
    <groupId>org.apache.poi</groupId>
    <artifactId>poi-ooxml</artifactId>
    <version>3.11</version>
</dependency>