[英]XSSF(Apache POI) - Adding multiple column label from single column value in pivot table
我目前正在使用Apache POI 3.12添加数据透视表。 这是我的sample.xlsx文件:
现在,我使用以下代码为上述数据创建数据透视表。
File excel = new File("sample.xlsx");
FileInputStream fis = new FileInputStream(excel);
XSSFWorkbook wb = new XSSFWorkbook(fis);
XSSFSheet sheet = wb.getSheetAt(0);
XSSFPivotTable pivotTable = sheet.createPivotTable(new AreaReference("A3:C7"), new CellReference("E3"));
pivotTable.addRowLabel(0);
pivotTable.addColumnLabel(DataConsolidateFunction.SUM, 1);
pivotTable.addDataColumn(1, true);
pivotTable.addReportFilter(2);
FileOutputStream fileOut = new FileOutputStream("output.xlsx");
wb.write(fileOut);
fileOut.close();
wb.close();
我的output.xlsx文件具有以下数据透视表:
当我要在excel中编辑数据透视表时,会在页面字段而不是列字段中添加year列。 实际上,我需要以下结果:
我无法从单列值添加多列标签。 请你帮助我好吗? 提前致谢
XSSFPivotTable
类处于@Beta状态。 因此,只有使用底层的低层对象才有可能。
XSSFWorkbook wb = new XSSFWorkbook(new FileInputStream("sample.xlsx"));
XSSFSheet sheet = wb.getSheetAt(0);
//the following creates a Pivot Table with 3 PivotFields (0 to 2) (3 Columns A3:C7); all dataField="false" at first
XSSFPivotTable pivotTable = sheet.createPivotTable(new AreaReference(new CellReference("A3"), new CellReference("C7")), new CellReference("E3"));
//the following makes PivotFields(0) an Axis-Field AXIS_ROW with 5 Items (5 Rows A3:C7). Why one Item for each row? I don't know.
//and it adds a new RowField for this
pivotTable.addRowLabel(0);
//the following makes PivotFields(1) a DataField and creates a DataColumn for this
pivotTable.addColumnLabel(DataConsolidateFunction.SUM, 1);
//pivotTable.addDataColumn(2, false); //not neccessary since addColumnLabel already adds a DataColumn
//now PivotFields(2) needs to be an Axis-Field AXIS_COL
pivotTable.getCTPivotTableDefinition().getPivotFields().getPivotFieldArray(2).setAxis(
org.openxmlformats.schemas.spreadsheetml.x2006.main.STAxis.AXIS_COL);
//PivotFields(2) needs to have at least one Item
pivotTable.getCTPivotTableDefinition().getPivotFields().getPivotFieldArray(2).addNewItems();
pivotTable.getCTPivotTableDefinition().getPivotFields().getPivotFieldArray(2).getItems().addNewItem().setT(
org.openxmlformats.schemas.spreadsheetml.x2006.main.STItemType.DEFAULT);
//new ColField needs to be added
pivotTable.getCTPivotTableDefinition().addNewColFields().addNewField().setX(2);
//pivotTable.addReportFilter(2);
FileOutputStream fileOut = new FileOutputStream("output.xlsx");
wb.write(fileOut);
fileOut.close();
wb.close();
pivotTable.addDataColumn(1, true);
不需要,因为addColumnLabel
已经添加了一个DataColumn
。
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