Package shoshould contain a content type part [m1.13]

Source: Internet
Author: User

tag: Io for art ar new type AD file

Public static workbook create (inputstream in) throws
Ioexception, invalidformatexception {
If (! In. marksupported ()){
In = new pushbackinputstream (in, 8 );
If (poifsfilesystem. haspoifsheader (in )){
Return new hssfworkbook (in );
If (poixmldocument. hasooxmlheader (in )){
Return new xssfworkbook (opcpackage. Open (in ));
Throw new illegalargumentexception ("your Excel version cannot be resolved by poi currently ");


when reading and writing XLS and XLSX formats, hssfworkbook is for XLS and xssfworkbook is for XLSX

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