功能简介
Apache POI提供API给Java对Microsoft Office格式档案读和写的功能。
POI各jar包的作用
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 |
按照需要导入jar包及相关依赖jar包。
poi-version.jar (excel文件生成需要)
poi-ooxml-version.jar(excel,word,ppt均需要)
poi-scratchpad-version.jar(ppt,vsd,word,viso,outlook等需要)
poi-ooxml-schemas-version.jar(excel需要)
poi-examples-version.jar(官方示例，开发不需要)
poi-excelant-version.jar(不需要)
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。
版本发布
https://mvnrepository.com/artifact/org.apache.poi/poi
POI 3.17是支持Java 6的最后一个版本。下一个版本将是4.0.0并且支持最小值。 Java 8。