功能簡介
Apache POI提供API給Java對Microsoft Office格式檔案讀和寫的功能。
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 |
按照需要導入jar包及相關依賴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，開發不需要)
poi-excelant-version.jar(不需要)
當我們只要使用xls格式時、只要導入poi-version-yyyymmdd.jar就可以了。
當我們還要使用xlsx格式、還要導入poi-ooxml-version-yyyymmdd.jar。
至於poi-ooxml-schemas-version-yyyymmdd.jar這個jar基本不太會用到的。
當我們需要操作word、ppt、viso、outlook等時需要用到poi-scratchpad-version-yyyymmdd.jar。
版本發佈
https://mvnrepository.com/artifact/org.apache.poi/poi
POI 3.17是支持Java 6的最後一個版本。下一個版本將是4.0.0並且支持最小值。 Java 8。