JAVA POI复制单元格的时候 单元格里面的公式为什么没有发生变化呢

这个是我 复制 Excel 行 的代码
poiUtil.copyRows(12, 12, 14, curSheet);

这行的公式是

复制出新的行之后 里面的公式还是

我想要的结果是 =F15/D15

请大神指导一下 用POI操作的时候 怎么 可以让公式跟着改变呢

已经解决了
public void copyRows(int startRow, int endRow, int pPosition, XSSFSheet currentSheet, XSSFWorkbook book) {
int pStartRow = startRow – 1;
int pEndRow = endRow – 1;
int targetRowFrom;
int targetRowTo;
int columnCount;
CellRangeAddress region = null;
int i;
int j;
if (pStartRow == -1 || pEndRow == -1) {
return;
}

	if (pStartRow == pPosition) {
		return;
	}

	for (i = 0; i < currentSheet.getNumMergedRegions(); i++) {
		region = currentSheet.getMergedRegion(i);
		if ((region.getFirstRow() >= pStartRow) && (region.getLastRow() <= pEndRow)) {
			targetRowFrom = region.getFirstRow() - pStartRow + pPosition;
			targetRowTo = region.getLastRow() - pStartRow + pPosition;
			CellRangeAddress newRegion = region.copy();
			newRegion.setFirstRow(targetRowFrom);
			newRegion.setFirstColumn(region.getFirstColumn());
			newRegion.setLastRow(targetRowTo);
			newRegion.setLastColumn(region.getLastColumn());
			currentSheet.addMergedRegion(newRegion);
		}

	}

	for (i = pStartRow; i <= pEndRow; i++) {
		XSSFRow sourceRow = currentSheet.getRow(i);
		columnCount = sourceRow.getLastCellNum();
		if (sourceRow != null) {
			XSSFRow newRow = currentSheet.createRow(pPosition - pStartRow + i);
			newRow.setHeight(sourceRow.getHeight());
			for (j = 0; j < columnCount; j++) {
				XSSFCell templateCell = sourceRow.getCell(j);
				if (templateCell != null) {
					XSSFCell newCell = newRow.createCell(j);
					copyCell(templateCell, newCell);
					if (templateCell.getCellType() == Cell.CELL_TYPE_FORMULA) {
						XSSFCell fromCell = getRow(pStartRow).getCell(j);
						XSSFCell destCell = getRow(pPosition).getCell(j);
						copyFormula(fromCell, destCell, book);
					}
				}
			}
		}
	}
}

public static void copyFormula(Cell srcCell, Cell destCell, XSSFWorkbook book) {
	// 相対参照で数式をコピーする
	// srcCell コピー元 destCell コピー先

	String formula = srcCell.getCellFormula();
	EvaluationWorkbook ew;
	FormulaRenderingWorkbook rw;
	Ptg[] ptgs;

	ew = XSSFEvaluationWorkbook.create((XSSFWorkbook) book);
	ptgs = FormulaParser.parse(formula, (XSSFEvaluationWorkbook) ew, FormulaType.CELL, 0);
	// 詳しいことはわからないが、最後のパラメータはシート番号を０始まりで指定
	rw = (XSSFEvaluationWorkbook) ew;

	for (Ptg ptg : ptgs) {
		// 座標の計算
		int shiftRows = destCell.getRowIndex() - srcCell.getRowIndex();
		int shiftCols = destCell.getColumnIndex() - srcCell.getColumnIndex();

		if (ptg instanceof RefPtgBase) {
			RefPtgBase ref = (RefPtgBase) ptg;

			if (ref.isColRelative()) {
				ref.setColumn(ref.getColumn() + shiftCols);
			}

			if (ref.isRowRelative()) {
				ref.setRow(ref.getRow() + shiftRows);
			}

		} else if (ptg instanceof AreaPtg) {
			AreaPtg ref = (AreaPtg) ptg;

			if (ref.isFirstColRelative()) {
				ref.setFirstColumn(ref.getFirstColumn() + shiftCols);
			}

			if (ref.isLastColRelative()) {
				ref.setLastColumn(ref.getLastColumn() + shiftCols);
			}

			if (ref.isFirstRowRelative()) {
				ref.setFirstRow(ref.getFirstRow() + shiftRows);
			}

			if (ref.isLastRowRelative()) {
				ref.setLastRow(ref.getLastRow() + shiftRows);
			}
		}
	}

	destCell.setCellFormula(FormulaRenderer.toFormulaString(rw, ptgs));
}