As per the Apache POI Components page, for XWPF
you need the poi-ooxml
maven artifact as a dependency
Your pom will therefore want to look something like this:
<properties>
<poi.version>3.10-FINAL</poi.version>
</properties>
<dependencies>
<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>poi</artifactId>
<version>${poi.version}</version>
</dependency>
<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>poi-ooxml</artifactId>
<version>${poi.version}</version>
</dependency>
</dependencies>