我使用Apache POI 3.11创建了一个数据透视表.像这样：
FileInputStream file = new FileInputStream(new File(path+fname));
XSSFWorkbook workbook = new XSSFWorkbook(file);
XSSFSheet sheet = workbook.getSheetAt(0);
//area of pivot data
AreaReference a=new AreaReference("A1:J4");
CellReference b=new CellReference("N5");
XSSFPivotTable pivotTable = sheet.createPivotTable(a,b);
//insert row
pivotTable.addRowLabel(3);
pivotTable.addRowLabel(6);
//insert column
pivotTable.addColumnLabel(DataConsolidateFunction.COUNT,5);
//export
FileOutputStream output_file =
new FileOutputStream(new File(path+"POI_XLS_Pivot_Example.xlsx"));
workbook.write(output_file);//write excel document to output stream
output_file.close(); //close the file
img http://www.pivot-table.com/wp-content/uploads/2010/12/calculateditem04.png
有谁知道这个问题的解决方案？
谢谢.
解决方法
以下方法(稍微修改过的XSSFPivotTable.addRowLabel版本)添加了“普通”透视列标签：
public static void addColLabel(XSSFPivotTable pivotTable,int columnIndex) {
AreaReference pivotArea = new AreaReference(pivotTable.getPivotCacheDefinition().getCTPivotCacheDefinition()
.getCacheSource().getWorksheetSource().getRef());
int lastRowIndex = pivotArea.getLastCell().getRow() - pivotArea.getFirstCell().getRow();
int lastColIndex = pivotArea.getLastCell().getCol() - pivotArea.getFirstCell().getCol();
if (columnIndex > lastColIndex) {
throw new IndexOutOfBoundsException();
}
CTPivotFields pivotFields = pivotTable.getCTPivotTableDefinition().getPivotFields();
CTPivotField pivotField = CTPivotField.Factory.newInstance();
CTItems items = pivotField.addNewItems();
pivotField.setAxis(STAxis.AXIS_COL);
pivotField.setShowAll(false);
for (int i = 0; i <= lastRowIndex; i++) {
items.addNewItem().setT(STItemType.DEFAULT);
}
items.setCount(items.sizeOfItemArray());
pivotFields.setPivotFieldArray(columnIndex,pivotField);
CTColFields rowFields;
if (pivotTable.getCTPivotTableDefinition().getColFields() != null) {
rowFields = pivotTable.getCTPivotTableDefinition().getColFields();
} else {
rowFields = pivotTable.getCTPivotTableDefinition().addNewColFields();
}
rowFields.addNewField().setX(columnIndex);
rowFields.setCount(rowFields.sizeOfFieldArray());
}
