在java jxl api中使用excel公式结果
我正在尝试在Excel中使用公式的结果来划分其他单元格。 我的代码如下：
import java.io.File; import jxl.*; import jxl.write.*; public class CreateExcel { public static void main(String[] args) throws Exception { Workbook workbook = Workbook.getWorkbook(new File("USA-IO-2005.xls")); WritableWorkbook copy = Workbook.createWorkbook(new File("output.xls"), workbook); copy.removeSheet(0); copy.removeSheet(2); WritableSheet domesticSheet = copy.getSheet(1); WritableSheet ASheet = copy.getSheet(0); for (int i = 8; i < 68; i++) { Formula f = new Formula(59, i - 1, "SUM(AX" + i + ":BE" + i + ") - BF" + i); domesticSheet.addCell(f); } double x; for (int i = 8; i < 68; i++) { NumberFormulaCell newCell = (NumberFormulaCell) domesticSheet.getCell(59, i); x = newCell.getValue(); ASheet.addCell(new Label(1, i, String.valueOf(Double .valueOf(domesticSheet.getCell(1, i).getContents()) / x))); } copy.write(); copy.close(); } } 不幸的是，这给了我以下例外：
线程“main”中的exceptionjava.lang.ClassCastException：jxl.write.Formula无法转换为CreateExcel.main上的jxl.NumberFormulaCell（CreateExcel.java:31）
有谁知道这应该怎么做？
编辑：
这是我修改后的代码，基本上做了我想要它做更多的事情。 我计算什么公式f的输出将等于并保持，而不是直接访问公式的结果。
import java.io.File; import jxl.*; import jxl.write.*; import jxl.write.Number; import jxl.SheetSettings; public class CreateExcel { public static void main(String[] args) throws Exception { Workbook workbook = Workbook.getWorkbook(new File("USA-IO-2005.xls")); WritableWorkbook copy = Workbook.createWorkbook(new File("output.xls"), workbook); copy.removeSheet(3); WritableSheet domesticSheet = copy.getSheet(2); WritableSheet ASheet = copy.getSheet(1); WritableSheet RDSheet = copy.getSheet(0); ASheet.setName("A Matrix"); double x = 1; double[] xVals = new double[60]; //WritableCellFormat cellFormat = new WritableCellFormat(new NumberFormat("#.########")); WritableCellFormat arial8format = new WritableCellFormat (new WritableFont(WritableFont.ARIAL, 8)); ASheet.addCell(new Label(1, 3, "A Matrix", arial8format)); for (int i = 8; i < 56; i++) { //Workaround: Gets the same result as formula f. Just wont update as numbers in excel are changed in the future for (int j = 49; j < 57; j++) xVals[i - 8] += Double.valueOf(domesticSheet.getCell(j, i - 1).getContents()); xVals[i - 8] -= Double.valueOf(domesticSheet.getCell(57, i - 1).getContents()); Number num = new Number(60, i - 1, xVals[i - 8], arial8format); Formula f = new Formula(59, i - 1, "SUM(AX" + i + ":BE" + i + ") - BF" + i, arial8format); domesticSheet.addCell(f); domesticSheet.addCell(num); for (int j = 1; j < 49; j++) { ASheet.setColumnView(j, 10); if (xVals[i - 8] != 0) x = Double.valueOf(domesticSheet.getCell(j, i - 1).getContents()) / xVals[i - 8]; else x = 0; ASheet.addCell(new Number(j, i - 1, x, arial8format)); } } SheetSettings s = new SheetSettings(ASheet); s.setVerticalFreeze(1); s.setHorizontalFreeze(1); ASheet.removeRow(55); ASheet.removeRow(56); for(int i = 0; i < 6; i ++) ASheet.removeRow(0); domesticSheet.removeRow(55); domesticSheet.removeRow(56); for(int i = 0; i < 6; i ++) domesticSheet.removeRow(0); copy.write(); copy.close(); } }
exception很清楚，你不能将方法getCell()的方法返回给NumberFormulaCell ，它将返回Cell接口。 他们是不同的界面。 我有以下的源代码更改，我没有你的Excel源文件，所以不能真的testing它，但类抛出exception现在不应该是一个问题。 在没有原始excel源文件的情况下，下面的这些更改， Sheet.addCell我的工作站上会出现exception，但这与您所报告的完全不同。 希望它在你的工作。
import java.io.File; import jxl.*; import jxl.write.*; public class CreateExcel { public static void main(String[] args) throws Exception { Workbook workbook = Workbook.getWorkbook(new File("USA-IO-2005.xls")); WritableWorkbook copy = Workbook.createWorkbook(new File("output.xls"), workbook); copy.removeSheet(0); copy.removeSheet(2); WritableSheet domesticSheet = copy.getSheet(1); WritableSheet ASheet = copy.getSheet(0); for (int i = 8; i < 68; i++) { Formula f = new Formula(59, i - 1, "SUM(AX" + i + ":BE" + i + ") - BF" + i); domesticSheet.addCell(f); } double x = 1; for (int i = 8; i < 68; i++) { Cell cell1 = domesticSheet.getCell(3, i); if (cell1.getType() == CellType.ERROR) { System.out.println("this cell is not exist!"); } if (cell1.getType() == CellType.NUMBER) { NumberCell nc = (NumberCell)cell1; x = nc.getValue(); System.out.println(x); ASheet.addCell(new Label(1, i, String.valueOf(Double.valueOf(domesticSheet.getCell(1, i).getContents()) / x))); } } copy.write(); copy.close(); } }