如何从 SXSSFWorkbook - APACHE POI 创建 PIVOT 表

Question

This is the Case: I am getting SXSSFWorkbook object and i need to create the pivot table by using that object . Is any way we can achieve it.

I have checked the below link: Apache POI - is there a way to create a pivot table where the source table is a SXSSFSheet?

But in this case first we are creating XSSFWorkbook and later we are creating SXSSFworkbook.Is there any way by using SXSSFworkbook we can achieve this or by creating XSSFWorkbook to achieve pivottable and later is it possible to integrate to existing SXSSFWorkbook.

Answer 1

Resolved the above issue ,please find the below code.

     SXSSFWorkbook swb=null;
    XSSFSheet pivotSheet=null;
    AreaReference areaReference=null;
    if(wb instanceof SXSSFWorkbook ) {
        swb =(SXSSFWorkbook)wb;
        pivotSheet= swb.getXSSFWorkbook().createSheet("Pivot Sheet");
        SXSSFSheet sxssfDataSheet = (SXSSFSheet) sheet;
        areaReference = new AreaReference("A1:K"+(sxssfDataSheet.getLastRowNum() + 1), SpreadsheetVersion.EXCEL2007);
    }else {
        wb.createSheet("Pivot Sheet");
        pivotSheet = (XSSFSheet) wb.getSheetAt(1); 
        XSSFSheet  xssfDataSheet = (XSSFSheet) sheet;
        areaReference = new AreaReference("A1:K"+(xssfDataSheet.getLastRowNum() + 1), SpreadsheetVersion.EXCEL2007);
    }

After we get this objects, then we can construct the pivot structure according to our requirement.