问题描述
我有一个 xlsm 文件，其中很少有单元格提供 3 个表的累积结果。
但是，有时只有 1 个表有值，其余 2 个为空。
因此，当我在 Apache poi 中对累积结果表运行公式评估时，由于剩余 2 个表中的值为空，我得到了评估异常。
示例
0 1
1 2
2 3
3 foo
dtype: object
如果我这样做了
Cumulative cells D1,E1
D1 = CustomFunction(A1,B1)
E1 = IF(A1+B1+C1=0,do something)
/*
CustomFunction definition is added in a class which implements FreeRefFunction and added to workbook using workbook.addToolPack(udfToolPack).
https://poi.apache.org/components/spreadsheet/user-defined-functions.html
*/
A1= 5
B1 = blank
C1 = blank
我收到了评估异常
evaluator.evaluateFormulaCell(cellD1);
evaluator.evaluateFormulaCell(cellE1);
CustomFunction.java
org.apache.poi.ss.formula.eval.EvaluationException
at org.apache.poi.ss.formula.eval.OperandResolver.getSingleValue(OperandResolver.java:69)
at CustomFunction.evaluate(CustomFunction.java:22)
at org.apache.poi.ss.formula.UserDefinedFunction.evaluate(UserDefinedFunction.java:64)
at org.apache.poi.ss.formula.OperationEvaluatorFactory.evaluate(OperationEvaluatorFactory.java:129)
at org.apache.poi.ss.formula.WorkbookEvaluator.evaluateFormula(WorkbookEvaluator.java:525)
at org.apache.poi.ss.formula.WorkbookEvaluator.evaluateAny(WorkbookEvaluator.java:288)
at org.apache.poi.ss.formula.WorkbookEvaluator.evaluateReference(WorkbookEvaluator.java:702)
at org.apache.poi.ss.formula.SheetRefEvaluator.getEvalForCell(SheetRefEvaluator.java:51)
at org.apache.poi.ss.formula.LazyRefEval.getInnerValueEval(LazyRefEval.java:44)
at org.apache.poi.ss.formula.eval.OperandResolver.getSingleValue(OperandResolver.java:62)
at org.apache.poi.ss.formula.eval.TwoOperandNumericOperation.singleOperandEvaluate(TwoOperandNumericOperation.java:29)
at org.apache.poi.ss.formula.eval.TwoOperandNumericOperation.evaluate(TwoOperandNumericOperation.java:35)
at org.apache.poi.ss.formula.functions.Fixed2ArgFunction.evaluate(Fixed2ArgFunction.java:33)
at org.apache.poi.ss.formula.OperationEvaluatorFactory.evaluate(OperationEvaluatorFactory.java:119)
at org.apache.poi.ss.formula.WorkbookEvaluator.evaluateFormula(WorkbookEvaluator.java:525)
at org.apache.poi.ss.formula.WorkbookEvaluator.evaluateAny(WorkbookEvaluator.java:288)
at org.apache.poi.ss.formula.WorkbookEvaluator.evaluateReference(WorkbookEvaluator.java:702)
at org.apache.poi.ss.formula.SheetRefEvaluator.getEvalForCell(SheetRefEvaluator.java:51)
at org.apache.poi.ss.formula.LazyRefEval.getInnerValueEval(LazyRefEval.java:44)
at org.apache.poi.ss.formula.eval.OperandResolver.getSingleValue(OperandResolver.java:62)
at org.apache.poi.ss.formula.eval.TwoOperandNumericOperation.singleOperandEvaluate(TwoOperandNumericOperation.java:29)
at org.apache.poi.ss.formula.eval.TwoOperandNumericOperation.evaluate(TwoOperandNumericOperation.java:36)
at org.apache.poi.ss.formula.functions.Fixed2ArgFunction.evaluate(Fixed2ArgFunction.java:33)
at org.apache.poi.ss.formula.OperationEvaluatorFactory.evaluate(OperationEvaluatorFactory.java:119)
at org.apache.poi.ss.formula.WorkbookEvaluator.evaluateFormula(WorkbookEvaluator.java:525)
at org.apache.poi.ss.formula.WorkbookEvaluator.evaluateAny(WorkbookEvaluator.java:288)
at org.apache.poi.ss.formula.WorkbookEvaluator.evaluateReference(WorkbookEvaluator.java:702)
at org.apache.poi.ss.formula.SheetRefEvaluator.getEvalForCell(SheetRefEvaluator.java:51)
at org.apache.poi.ss.formula.LazyRefEval.getInnerValueEval(LazyRefEval.java:44)
at org.apache.poi.ss.formula.eval.OperandResolver.getSingleValue(OperandResolver.java:62)
at org.apache.poi.ss.formula.eval.TwoOperandNumericOperation.singleOperandEvaluate(TwoOperandNumericOperation.java:29)
at org.apache.poi.ss.formula.eval.TwoOperandNumericOperation.evaluate(TwoOperandNumericOperation.java:36)
at org.apache.poi.ss.formula.functions.Fixed2ArgFunction.evaluate(Fixed2ArgFunction.java:33)
at org.apache.poi.ss.formula.OperationEvaluatorFactory.evaluate(OperationEvaluatorFactory.java:119)
at org.apache.poi.ss.formula.WorkbookEvaluator.evaluateFormula(WorkbookEvaluator.java:525)
at org.apache.poi.ss.formula.WorkbookEvaluator.evaluateAny(WorkbookEvaluator.java:288)
at org.apache.poi.ss.formula.WorkbookEvaluator.evaluateReference(WorkbookEvaluator.java:702)
at org.apache.poi.ss.formula.SheetRefEvaluator.getEvalForCell(SheetRefEvaluator.java:51)
at org.apache.poi.ss.formula.LazyRefEval.getInnerValueEval(LazyRefEval.java:44)
at org.apache.poi.ss.formula.eval.OperandResolver.getSingleValue(OperandResolver.java:62)
at org.apache.poi.ss.formula.eval.RelationalOperationEval.evaluate(RelationalOperationEval.java:64)
at org.apache.poi.ss.formula.functions.Fixed2ArgFunction.evaluate(Fixed2ArgFunction.java:33)
at org.apache.poi.ss.formula.OperationEvaluatorFactory.evaluate(OperationEvaluatorFactory.java:119)
at org.apache.poi.ss.formula.WorkbookEvaluator.evaluateFormula(WorkbookEvaluator.java:525)
at org.apache.poi.ss.formula.WorkbookEvaluator.evaluateAny(WorkbookEvaluator.java:288)
at org.apache.poi.ss.formula.WorkbookEvaluator.evaluate(WorkbookEvaluator.java:230)
at org.apache.poi.xssf.usermodel.XSSFFormulaEvaluator.evaluateFormulaCellValue(XSSFFormulaEvaluator.java:264)
at org.apache.poi.xssf.usermodel.XSSFFormulaEvaluator.evaluateFormulaCell(XSSFFormulaEvaluator.java:151)
at ExcelProcessor.main(ExcelProcessor.java:314)
那么，在公式评估中，我如何将空白值视为 0？
解决方法
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