71

我正在使用 Apache POI API 从 Excel 文件中获取值。除了包含公式的单元格外，一切都很好。实际上，cell.getStringCellValue()返回的是单元格中使用的公式，而不是单元格的值。

我尝试使用evaluateFormulaCell()方法，但它不起作用，因为我使用的是 GETPIVOTDATA Excel 公式，并且此公式未在 API 中实现：

Exception in thread "main" org.apache.poi.ss.formula.eval.NotImplementedException: Error evaluating cell Landscape!K11
    at org.apache.poi.ss.formula.WorkbookEvaluator.addExceptionInfo(WorkbookEvaluator.java:321)
    at org.apache.poi.ss.formula.WorkbookEvaluator.evaluateAny(WorkbookEvaluator.java:288)
    at org.apache.poi.ss.formula.WorkbookEvaluator.evaluate(WorkbookEvaluator.java:221)
    at org.apache.poi.hssf.usermodel.HSSFFormulaEvaluator.evaluateFormulaCellValue(HSSFFormulaEvaluator.java:320)
    at org.apache.poi.hssf.usermodel.HSSFFormulaEvaluator.evaluateFormulaCell(HSSFFormulaEvaluator.java:213)
    at fromExcelToJava.ExcelSheetReader.unAutreTest(ExcelSheetReader.java:193)
    at fromExcelToJava.ExcelSheetReader.main(ExcelSheetReader.java:224)
Caused by: org.apache.poi.ss.formula.eval.NotImplementedException: GETPIVOTDATA
    at org.apache.poi.hssf.record.formula.functions.NotImplementedFunction.evaluate(NotImplementedFunction.java:42)
4

5 回答 5

146

对于公式单元格，excel 存储两个东西。一个是公式本身，另一个是“缓存”值（论坛被评估为的最后一个值）

如果您想获取最后一个缓存值（这可能不再正确，但只要 Excel 保存了文件并且您没有更改它应该是），您将需要类似：

 for(Cell cell : row) {
     if(cell.getCellType() == Cell.CELL_TYPE_FORMULA) {
        System.out.println("Formula is " + cell.getCellFormula());
        switch(cell.getCachedFormulaResultType()) {
            case Cell.CELL_TYPE_NUMERIC:
                System.out.println("Last evaluated as: " + cell.getNumericCellValue());
                break;
            case Cell.CELL_TYPE_STRING:
                System.out.println("Last evaluated as \"" + cell.getRichStringCellValue() + "\"");
                break;
        }
     }
 }
于 2011-09-30T11:18:24.577 回答
12

以前发布的解决方案对我不起作用。cell.getRawValue()返回与单元格中所述相同的公式。以下功能对我有用：

public void readFormula() throws IOException {
    FileInputStream fis = new FileInputStream("Path of your file");
    Workbook wb = new XSSFWorkbook(fis);
    Sheet sheet = wb.getSheetAt(0);
    FormulaEvaluator evaluator = wb.getCreationHelper().createFormulaEvaluator();

    CellReference cellReference = new CellReference("C2"); // pass the cell which contains the formula
    Row row = sheet.getRow(cellReference.getRow());
    Cell cell = row.getCell(cellReference.getCol());

    CellValue cellValue = evaluator.evaluate(cell);

    switch (cellValue.getCellType()) {
        case Cell.CELL_TYPE_BOOLEAN:
            System.out.println(cellValue.getBooleanValue());
            break;
        case Cell.CELL_TYPE_NUMERIC:
            System.out.println(cellValue.getNumberValue());
            break;
        case Cell.CELL_TYPE_STRING:
            System.out.println(cellValue.getStringValue());
            break;
        case Cell.CELL_TYPE_BLANK:
            break;
        case Cell.CELL_TYPE_ERROR:
            break;

        // CELL_TYPE_FORMULA will never happen
        case Cell.CELL_TYPE_FORMULA:
            break;
    }

}
于 2016-12-02T13:06:59.457 回答
1

有一个替代命令，您可以在其中获取放置公式的单元格的原始值。它的返回类型是字符串。利用：

cell.getRawValue();
于 2015-04-27T15:57:19.513 回答
1

如果要从 HSSF 单元中提取原始值，可以使用类似以下代码片段的内容：

CellBase base = (CellBase) cell;
CellType cellType = cell.getCellType();
base.setCellType(CellType.STRING);
String result = cell.getStringCellValue();
base.setCellType(cellType);

至少对于完全由数字组成的字符串（并由 Excel 自动转换为数字），这将返回原始字符串（例如"12345"）而不是小数值（例如"12345.0"）。请注意，setCellType它在 interface 中可用Cell（从 v. 4.1 开始），但在 v 5.x 中已弃用并宣布将其消除，而此方法在 class 中仍然可用CellBase。getRawValue显然，在Cell界面中或者至少能够getStringCellValue在非 STRING 单元格类型上使用会更好。不幸的是，setCellType描述中提到的所有替换都不会涵盖此用例（也许 POI 开发团队的成员会阅读此答案）。

于 2020-04-14T18:48:36.690 回答
0

SelThroughJava's answer was very helpful I had to modify a bit to my code to be worked . I used https://mvnrepository.com/artifact/org.apache.poi/poi and https://mvnrepository.com/artifact/org.testng/testng as dependencies . Full code is given below with exact imports.

 import java.io.FileInputStream;
    import java.io.FileNotFoundException;
    import java.io.IOException;

    import org.apache.poi.hssf.usermodel.HSSFCell;
    import org.apache.poi.hssf.util.CellReference;
    import org.apache.poi.sl.usermodel.Sheet;
    import org.apache.poi.ss.usermodel.Cell;
    import org.apache.poi.ss.usermodel.CellType;
    import org.apache.poi.ss.usermodel.CellValue;
    import org.apache.poi.ss.usermodel.FormulaEvaluator;
    import org.apache.poi.ss.usermodel.Row;
    import org.apache.poi.ss.usermodel.Workbook;
    import org.apache.poi.ss.usermodel.WorkbookFactory;
    import org.apache.poi.xssf.usermodel.XSSFWorkbook;


    public class ReadExcelFormulaValue {

        private static final CellType NUMERIC = null;
        public static void main(String[] args) {
            try {
                readFormula();
            } catch (IOException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
        }
        public static void readFormula() throws IOException {
            FileInputStream fis = new FileInputStream("C:eclipse-workspace\\sam-webdbriver-diaries\\resources\\tUser_WS.xls");
            org.apache.poi.ss.usermodel.Workbook workbook = WorkbookFactory.create(fis);
            org.apache.poi.ss.usermodel.Sheet sheet = workbook.getSheetAt(0);

            FormulaEvaluator evaluator = workbook.getCreationHelper().createFormulaEvaluator();

            CellReference cellReference = new CellReference("G2"); // pass the cell which contains the formula
            Row row = sheet.getRow(cellReference.getRow());
            Cell cell = row.getCell(cellReference.getCol());

            CellValue cellValue = evaluator.evaluate(cell);
            System.out.println("Cell type month  is "+cellValue.getCellTypeEnum());
            System.out.println("getNumberValue month is  "+cellValue.getNumberValue());     
          //  System.out.println("getStringValue "+cellValue.getStringValue());


            cellReference = new CellReference("H2"); // pass the cell which contains the formula
             row = sheet.getRow(cellReference.getRow());
             cell = row.getCell(cellReference.getCol());

            cellValue = evaluator.evaluate(cell);
            System.out.println("getNumberValue DAY is  "+cellValue.getNumberValue());    


        }

    }
于 2020-05-12T13:59:03.977 回答