困扰无数人的 POI 读取合并单元格内容难题，终于有解了

POI读取合并单元格内容

产品们想到的excel真是千奇百怪，这次又遇到一个读取包含合并单元格的excel文件，一开始直接读取，直接报空了，没办法，只能对于这些列进行判断是否为合并单元格

private boolean isMergedRegion(Sheet sheet, int row, int column) {
    int sheetMergeCount = sheet.getNumMergedRegions();
    for (int i = 0; i < sheetMergeCount; i++) {
        CellRangeAddress range = sheet.getMergedRegion(i);
        int firstColumn = range.getFirstColumn();
        int lastColumn = range.getLastColumn();
        int firstRow = range.getFirstRow();
        int lastRow = range.getLastRow();
        if (row >= firstRow && row <= lastRow) {
            if (column >= firstColumn && column <= lastColumn) {
                return true;
            }
        }
    }
    return false;
}

如果是合并单元格的话，使用单独的方法来进行读取

public String getMergedRegionValue(Sheet sheet, int row, int column) {
    int sheetMergeCount = sheet.getNumMergedRegions();
    for (int i = 0; i < sheetMergeCount; i++) {
        CellRangeAddress ca = sheet.getMergedRegion(i);
        int firstColumn = ca.getFirstColumn();
        int lastColumn = ca.getLastColumn();
        int firstRow = ca.getFirstRow();
        int lastRow = ca.getLastRow();
        if (row >= firstRow && row <= lastRow) {
            if (column >= firstColumn && column <= lastColumn) {
                Row fRow = sheet.getRow(firstRow);
                Cell fCell = fRow.getCell(firstColumn,Row.MissingCellPolicy.CREATE_NULL_AS_BLANK);
                return fCell.toString();
            }
        }
    }

    return null;
}

参考文献

• POI读取合并单元格内容