使用POI导出Exel遇到需要合并相同列

/**
     * 合并列单元格
     * @param xfSheet 工作表对象
     * @param column 需要合并的列
     * @param row 从第row行开始合并　　　* @param begin 跳过空白行开始的行数
     */
    public void mergedColumn(Sheet xfSheet,int column,int row,int begin){
        int regionStart = 1;
        Map<Integer,Integer> map = new LinkedHashMap<>();
        List<Map<Integer,Integer>> list = new ArrayList<>();
        for (int i = begin;i<xfSheet.getPhysicalNumberOfRows();i++){
            if (i<xfSheet.getLastRowNum()){
                String secondIndex = xfSheet.getRow(i).getCell(column).getStringCellValue();
                String secondIndex2 = xfSheet.getRow(i+1).getCell(column).getStringCellValue();
                if (!secondIndex.equals(secondIndex2)){
                    map.put(regionStart,i);
                    regionStart=i+1;
                }
            }else if (i==xfSheet.getLastRowNum()){
                map.put(regionStart,i);
                regionStart=i+1;
            }
        }
        list.add(map);
        for (Map<Integer,Integer> rmap : list){
            for (Integer i : rmap.keySet()){
                if (i >= row) {
                    if (!i.equals(rmap.get(i))) {
                        xfSheet.addMergedRegion(new CellRangeAddress(i, rmap.get(i), column, column));
                    }
                }
            }
        }
    }

标签：rmap,Exel,导出,column,param,int,POI,new,row
来源： https://www.cnblogs.com/myStudyHome/p/16435378.html