POI各Jar包的作用

目前POI的最新发布版本是3.10_FINAL.该版本保护的jar包有:

Maven artifactId Prerequisites JAR
poi commons-logging, commons-codec, log4j poi-version-yyyymmdd.jar
poi-scratchpad poi poi-scratchpad-version-yyyymmdd.jar
poi-ooxml poi, poi-ooxml-schemas poi-ooxml-version-yyyymmdd.jar
poi-ooxml-schemas xmlbeans poi-ooxml-schemas-version-yyyymmdd.jar
poi-examples poi, poi-scratchpad, poi-ooxml poi-examples-version-yyyymmdd.jar
ooxml-schemas xmlbeans ooxml-schemas-1.1.jar


很多人都困惑POI那么多Jar到底应该导入哪一个。

实际上很多时候我们只利用POI来操作Excel。甚至只用xls这一种格式。

那么就没有必要全部都导入了。具体应该使用哪个JAR包请参考以下内容:

Component Map

The Apache POI distribution consists of support for many document file formats. This support is provided in several Jar files. Not all of the Jars are needed for every format. The following tables show the relationships between POI components, Maven repository tags, and the project's Jar files.

Component Application type Maven artifactId Notes
POIFS OLE2 Filesystem poi Required to work with OLE2 / POIFS based files
HPSF OLE2 Property Sets poi  
HSSF Excel XLS poi For HSSF only, if common SS is needed see below
HSLF PowerPoint PPT poi-scratchpad  
HWPF Word DOC poi-scratchpad  
HDGF Visio VSD poi-scratchpad  
HPBF Publisher PUB poi-scratchpad  
HSMF Outlook MSG poi-scratchpad  
OpenXML4J OOXML poi-ooxml plus one of
poi-ooxml-schemas, ooxml-schemas
Only one schemas jar is needed, see below for differences
XSSF Excel XLSX poi-ooxml  
XSLF PowerPoint PPTX poi-ooxml  
XWPF Word DOCX poi-ooxml  
Common SS Excel XLS and XLSX poi-ooxml WorkbookFactory and friends all require poi-ooxml, not just core poi

当我们只要使用xls格式时、只要导入poi-version-yyyymmdd.jar就可以了。
当我们还要使用xlsx格式、还要导入poi-ooxml-version-yyyymmdd.jar。
至于poi-ooxml-schemas-version-yyyymmdd.jar这个jar基本不太会用到的。
当我们需要操作word、ppt、viso、outlook等时需要用到poi-scratchpad-version-yyyymmdd.jar。


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