[英]Get Cell Value from Excel Sheet with Apache Poi
How to get cell value with poi in java ?如何在java中使用poi获取单元格值?
My code is look like this我的代码看起来像这样
String cellformula_total__percentage= "(1-E" + (rowIndex + 2) + "/" + "D" + (rowIndex + 2) + ")*100";
cell.setCellType(HSSFCell.CELL_TYPE_NUMERIC);
cell.setCellStyle(this.valueRightAlignStyleLightBlueBackground);
cell.setCellFormula("abs(" + cellformula_total__percentage + ")");
But if there is in this case how can i check that my cell value contain error value like #DIV/0!但是如果在这种情况下我如何检查我的单元格值是否包含错误值,如#DIV/0! and how can i replace it with N/A
我如何用 N/A 替换它
You have to use the FormulaEvaluator, as shown here .您必须使用FormulaEvaluator,如图所示这里。 This will return a value that is either the value present in the cell or the result of the formula if the cell contains such a formula :
如果单元格包含这样的公式,这将返回一个值,该值要么是单元格中存在的值,要么是公式的结果:
FileInputStream fis = new FileInputStream("/somepath/test.xls");
Workbook wb = new HSSFWorkbook(fis); //or new XSSFWorkbook("/somepath/test.xls")
Sheet sheet = wb.getSheetAt(0);
FormulaEvaluator evaluator = wb.getCreationHelper().createFormulaEvaluator();
// suppose your formula is in B3
CellReference cellReference = new CellReference("B3");
Row row = sheet.getRow(cellReference.getRow());
Cell cell = row.getCell(cellReference.getCol());
if (cell!=null) {
switch (evaluator.evaluateFormulaCell(cell)) {
case Cell.CELL_TYPE_BOOLEAN:
System.out.println(cell.getBooleanCellValue());
break;
case Cell.CELL_TYPE_NUMERIC:
System.out.println(cell.getNumericCellValue());
break;
case Cell.CELL_TYPE_STRING:
System.out.println(cell.getStringCellValue());
break;
case Cell.CELL_TYPE_BLANK:
break;
case Cell.CELL_TYPE_ERROR:
System.out.println(cell.getErrorCellValue());
break;
// CELL_TYPE_FORMULA will never occur
case Cell.CELL_TYPE_FORMULA:
break;
}
}
if you need the exact contant (ie the formla if the cell contains a formula), then this is shownhere .如果您需要确切的内容(即,如果单元格包含公式,则为表格),则此处显示。
Edit : Added a few example to help you.编辑:添加了一些示例来帮助您。
first you get the cell (just an example)首先你得到细胞(只是一个例子)
Row row = sheet.getRow(rowIndex+2);
Cell cell = row.getCell(1);
If you just want to set the value into the cell using the formula (without knowing the result) :如果您只想使用公式将值设置到单元格中(不知道结果):
String formula ="ABS((1-E"+(rowIndex + 2)+"/D"+(rowIndex + 2)+")*100)";
cell.setCellFormula(formula);
cell.setCellStyle(this.valueRightAlignStyleLightBlueBackground);
if you want to change the message if there is an error in the cell, you have to change the formula to do so, something like如果您想在单元格中有错误的情况下更改消息,则必须更改公式才能这样做,例如
IF(ISERR(ABS((1-E3/D3)*100));"N/A"; ABS((1-E3/D3)*100))
(this formula check if the evaluation return an error and then display the string "N/A", or the evaluation if this is not an error). (此公式检查评估是否返回错误,然后显示字符串“N/A”,如果这不是错误则显示评估)。
if you want to get the value corresponding to the formula, then you have to use the evaluator.如果你想得到公式对应的值,那么你必须使用求值器。
Hope this help,希望这有帮助,
Guillaume纪尧姆
May be by:-可能是:-
for(Row row : sheet) {
for(Cell cell : row) {
System.out.print(cell.getStringCellValue());
}
}
For specific type of cell you can try:对于特定类型的单元格,您可以尝试:
switch (cell.getCellType()) {
case Cell.CELL_TYPE_STRING:
cellValue = cell.getStringCellValue();
break;
case Cell.CELL_TYPE_FORMULA:
cellValue = cell.getCellFormula();
break;
case Cell.CELL_TYPE_NUMERIC:
if (DateUtil.isCellDateFormatted(cell)) {
cellValue = cell.getDateCellValue().toString();
} else {
cellValue = Double.toString(cell.getNumericCellValue());
}
break;
case Cell.CELL_TYPE_BLANK:
cellValue = "";
break;
case Cell.CELL_TYPE_BOOLEAN:
cellValue = Boolean.toString(cell.getBooleanCellValue());
break;
}
声明:本站的技术帖子网页,遵循CC BY-SA 4.0协议,如果您需要转载,请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.