1、先用正则表达式判断数据是否为数值型,如果为数值型,则设置单元格格式为整数或者小数; 2、然后往单元格中存放数据的时候要设置数据的格式为double类型,如果查看poi的源码HSSFCell.java会发现设置数据的方法如下,所以用setCellValue(double)方法即可。 优化 到了这里,您可能以为万事大吉啊了,其实上面的代码有个陷阱,...
JAVA POI读取Excel中Cell为null的处理 空数据:没有任何编辑过的单元格(非空格) 有时候我们需要对根据每一列的信息进行处理,这里就会出现易错的缺陷。 1.不需要这些空数据 row =sheet.getRow(i);for(Cell c : row) {//处理} 2.需要这些空数据 row =sheet.getRow(i);for(intj=0;j<row.getLastCellNum()...
1 sheet1.GetRow(1).GetCell(1).SetCellValue("新闻");这样第一行就错误报null异常。最后发现模板的问题,因为新建的模板没有什么值所以必须创建一下就搞定了。代码如下修改: 1 2 3 4 5 6 7 8 if (sheet1.GetRow(1) == null) { sheet1.CreateRow(1); } if (sheet1.GetRow(1).GetCell(1) ==...
Signature:df.style.bar( subset: 'Subset | None' = None, axis: 'Axis | None' = 0, color='#d65f5f', width: 'float' = 100, align: 'str' = 'left', vmin: 'float | None' = None, vmax: 'float | None' = None,) -> 'Styler'Docstring:Draw bar chart in the cell backgrounds....
当cell是null的时候，如何让他变成空字符串呢？cell = row.createCell(index);cell.set...
Sub convertToValues() Dim MyRange As Range Dim MyCell As Range Select Case _ MsgBox("You Can't Undo This Action. " _ & "Save Workbook First?", vbYesNoCancel, _ "Alert") Case Is = vbYes ThisWorkbook.Save Case Is = vbCancel Exit Sub End Select Set MyRange = Selection For Each ...
Public FunctionHasNullString( _ ByRef rngToCheck As Range, _ Optional ByVal blnConstantsOnly AsBoolean = False) _ As Boolean Dim rngFirstCell As Range Dim strToCheck As String Dim varToCheck As Variant Set rngFirstCell = rngToCheck.Cells(1) ...
(i,Row.MissingCellPolicy.RETURN_BLANK_AS_NULL);if(cell!=null&&cell.getCellType()!=CellType.BLANK){returnfalse;}}returntrue;}publicstaticvoidmain(String[]args){try(FileInputStreamfile=newFileInputStream("path/to/excel/file.xlsx")){Workbookworkbook=newXSSFWorkbook(file);Sheetsheet=workbook.get...
// Cell calculate this.Application.Calculate(); // Or... this.Application.Calculate(); // Or... this.Application.get_Range("A1","B12").Calculate(); Quit方法:如果要退出Excel,则可以调用Quit方法,如果DisplayAlerts设置为false,则不会弹出提示用户保存的对话框。
=null){CellnewCell=row.createCell(i-1,cell.getCellType());newCell.setCellValue(cell.getStringCellValue());}row.removeCell(cell);}}// Save the modified workbook back to the filetry(FileOutputStreamoutputStream=newFileOutputStream(excelFilePath)){workbook.write(outputStream);}}catch(Exceptione...