Apache-POI操作Excel的一些小技巧

Apache-POI操作Excel将合并后的单元格全部填充为相同数据的一个实例。

	private static void fillMergedRegion(final Sheet sheet) {
		for (int i = 0; i < sheet.getNumMergedRegions(); i++) {
			int startRow = sheet.getMergedRegion(i).getFirstRow();
			int endRow = sheet.getMergedRegion(i).getLastRow();
			int startColumn = sheet.getMergedRegion(i).getFirstColumn();
			int endColumn = sheet.getMergedRegion(i).getLastColumn();
			String value = getStringValue(sheet.getRow(startRow).getCell(startColumn));

			for (int row = startRow; row <= endRow; row++) {
				for (int column = startColumn; column <= endColumn; column++) {
					sheet.getRow(row).getCell(column).setCellValue(value);
				}
			}
		}
	}

Apache-POI操作Excel获得单元格内容

public static String getStringValue(Cell cell) {
		if (cell == null) {
			return StringConst.EMPTY_STRING;
		}

		// get the type of cell, and transform it
		if (Cell.CELL_TYPE_FORMULA == cell.getCellType()) {
			switch (cell.getCachedFormulaResultType()) {
			// if it is mumeric type
			case Cell.CELL_TYPE_NUMERIC:

				return new DataFormatter().createFormat(cell).format(cell.getNumericCellValue());
				// if it is string type
			case Cell.CELL_TYPE_STRING:
				return cell.getRichStringCellValue().toString();

			}
		}
		return new DataFormatter().formatCellValue(cell);
	}