合并单元格相关问题

 同一行上合并了多个单元格问题:

应该从后向前合并单元格 因为从前向后合并单元格,合并之后的单元格下标就乱了,我也是刚刚解决这个问题,我是这样做的。

XSSFSheet sheet = newWorkBook.createSheet("报表1");
  for(int i=3;i>-1;i--){
  sheet.addMergedRegion(new CellRangeAddress(0,0, i*7+0, i*7+6));
}

 

合并单元格并添加边框

方法1:

private static void setRegionBorder(int border, CellRangeAddress region, Sheet sheet,Workbook wb){
        CellStyle cs=wb.createCellStyle();
        cs.setBorderBottom((short) border);
        cs.setBorderTop((short) border);
        cs.setBorderLeft((short) border);
        cs.setBorderRight((short) border);
        setRegionStyle( cs, region, sheet);
        }
  
    private static void setRegionStyle(CellStyle cs, CellRangeAddress region, Sheet sheet){
       
        for(int i=region.getFirstRow();i<=region.getLastRow();i++){
            
            Row row=sheet.getRow(i);
            if(row==null) row=sheet.createRow(i);
            for(int j=region.getFirstColumn();j<=region.getLastColumn();j++){
                Cell cell=row.getCell(j);
                if( cell==null){
                    cell=row.createCell(j);
                    cell.setCellValue("");
                }
                 cell.setCellStyle(cs);
            }
        }
    }

注意:如果合并在前,则在后面不能直接用

       Row row=sheet.createRow(0);

         而应该改为

       Row row=sheet.getRow(0);

       if(row==null){
            row2=sheet.createRow(2);
       }

 

          否则直接createRow会覆盖先前合并时定义的边框样式。

 

方法2:可以用poi自带的工具类来处理合并后的边框

private static void setRegionBorder(int border, CellRangeAddress region, Sheet sheet,Workbook wb){
        RegionUtil.setBorderBottom(border,region, sheet, wb);
        RegionUtil.setBorderLeft(border,region, sheet, wb);
        RegionUtil.setBorderRight(border,region, sheet, wb);
        RegionUtil.setBorderTop(border,region, sheet, wb);
    
    }

 

posted @ 2017-11-21 10:42  Dreamice  阅读(296)  评论(0编辑  收藏  举报