Apache Open Source Project--apache POI

Apache POI is an open source Java project that reads and writes Microsoft OLE2 component documents such as Excel, Word, and so on. Currently the POI has a ruby version.

Structure:

• HSSF-provides the ability to read and write Microsoft Excel xls format files.

• XSSF-provides the ability to read and write Microsoft Excel OOXML xlsx format files.

• HWPF-provides the ability to read and write Microsoft Word DOC97 format files.

• XWPF-provides the ability to read and write Microsoft Word DOC2003 format files.

• HSLF-provides the ability to read and write files in Microsoft PowerPoint format.

• HDGF-provides the ability to read files in Microsoft Visio format.

• HPBF-provides the ability to read files in Microsoft Publisher format.

• HSMF-provides the ability to read files in Microsoft Outlook format.

Apache Open Source Project--apache POI