Cannot import XSSF in Apache POI

java

dependency-management

maven

apache-poi

byNikita Barsukov·Jan 1, 2025

If you're tangled up with XSSF classes in Apache POI, the poi-ooxml artifact is your lifesaver. For Maven projects, add this dependency:

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

Here, replace YOUR_POI_VERSION with the actual version of Apache POI you're hooked up with. Non-Maven folks, fetch the poi-ooxml JAR from the Apache POI website and entrench it in your project classpath.

Resolving dependencies: A battle strategy

Dealing with dependencies is like breaching the castle in a war zone. Ensure the warrior org.apache.poi.xssf.usermodel.XSSFWorkbook is inked properly in your Java papyrus. Encountering torpedoes on your journey? Version conflicts may stand as the devil in disguise. Scrutinize your pom.xml or build.gradle for disguised foes posing possible conflicts, and align your warriors' tactics (versions).

Choosing your sword: Picking Apache POI version

Apache POI versions dating 3.12 and beyond command better forces for XSSF combats. Choosing the right sword is crucial, check out the POI components page for crafting your arsenal with dependencies and modules, including the poi-ooxml-schemas and poi-scratchpad for non-spreadsheet missions.

Maven: The wise old wizard

Maven is your powerful wizard, expert in spells of dependency management. Whisper poi-ooxml in Maven's ear and see the magic unfold, as all related magical scrolls and inscriptions are accounted for. If you're a lone wolf preferring to avoid this wizardly route, procure your charms manually from the POI download page, but don't forget to include both poi and poi-ooxml.

Field notes and common ambushes

Check your armor: Be wary of disguised threats like version mismatches. Look out for multiple POI artifacts in your armory (Dependencies).
Sharpen your swords: Assure that the poi-ooxml jar is indeed etched into the armory list (Build Path) to prevent ambushes (runtime issues) when your forces try to wield the XSSF blade.
Upgrade your arsenal: Keep your armory updated with the newer versions of Apache POI, packed with sharper blades (bug fixes) and lighter armors (performance improvements).
Guidance from the oracle: Official Apache POI documentation - a treasure chest holding the mysteries of the land, is your Oracle for de-coding the Engel’milian Prophecy (troubleshooting).

Wisdom of the ancients: Configuring your project

To sustain harmony in your kingdom (application):

Match your weaponry and spells: Inspect the versions of poi and poi-ooxml listed in your holy scroll (build file) for good fortune.
Take cues from the ancient athletes: Browse through artifacts of historical sports events (code examples) and bazaar talks (community solutions) for various use scenarios on sites like Program Creek.
Magic of your artifact vision (IDE): It can lend you its magical aura to easily add jars and manage your castle (Build Path).