java基于jxl获取excel合并单元格

jxl 通过 sheet.getMergedCells()方法获取excel中合并的单元格

需注意：
Sheet sheet = workbook.getSheet(sheetIndex); √ OK
Sheet sheet = workbook.getSheets()[0]; × 获取不到

    Workbook workbook = Workbook.getWorkbook(in);
    Sheet sheet = workbook.getSheet(sheetIndex);

    /* readSheet */
    private static List readSheet(Sheet sheet) {
        List list = new ArrayList();
        Range[] mergedCells = sheet.getMergedCells();
        String value;
        for (int row = 0, rowLen = sheet.getRows(); row < rowLen; row++) {
            int colLen = sheet.getColumns();
            String[] rowData = new String[colLen];
            for (int col = 0; col < colLen; col++) {
                Range range = getRange(mergedCells, row, col);
                if (range != null) {
                    value = sheet.getCell(range.getTopLeft().getColumn(), range.getTopLeft().getRow()).getContents();
                } else {
                    value = sheet.getCell(col, row).getContents();
                }
                rowData[col] = value != null ? value.trim() : "";
            }
            list.add(rowData);
        }
        return list;
    }
    /* getRange */
    private static Range getRange(Range[] ranges, int row, int col) {
        for (int i = 0; i < ranges.length; i++) {
            Range range = ranges[i];
            if (row >= range.getTopLeft().getRow() && row <= range.getBottomRight().getRow()
                && col >= range.getTopLeft().getColumn() && col <= range.getBottomRight().getColumn()) {
                return range;
            }
        }
        return null;
    }